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  • 型号: INA145UA
  • 制造商: Texas Instruments
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INA145UA产品简介:

ICGOO电子元器件商城为您提供INA145UA由Texas Instruments设计生产,在icgoo商城现货销售,并且可以通过原厂、代理商等渠道进行代购。 INA145UA价格参考。Texas InstrumentsINA145UA封装/规格:线性 - 放大器 - 仪表,运算放大器,缓冲器放大器, 差分 放大器 1 电路 8-SOIC。您可以下载INA145UA参考资料、Datasheet数据手册功能说明书,资料中有INA145UA 详细功能的应用电路图电压和使用方法及教程。

产品参数 图文手册 常见问题
参数 数值
-3db带宽

500kHz

产品目录

集成电路 (IC)半导体

描述

IC OPAMP DIFF 500KHZ 8SOIC差分放大器 Programmable Gain

产品分类

Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps集成电路 - IC

品牌

Texas Instruments

产品手册

点击此处下载产品Datasheet

产品图片

rohs

符合RoHS无铅 / 符合限制有害物质指令(RoHS)规范要求

产品系列

放大器 IC,差分放大器,Texas Instruments INA145UA-

数据手册

点击此处下载产品Datasheet

产品型号

INA145UA

产品目录页面

点击此处下载产品Datasheet

产品种类

差分放大器

供应商器件封装

8-SOIC

共模抑制比—最小值

76 dB

包装

管件

单位重量

76 mg

单电源电压

2.76 V to 36 V

压摆率

0.45 V/µs

可用增益调整

1 V/V

商标

Texas Instruments

增益带宽积

-

安装类型

表面贴装

安装风格

SMD/SMT

封装

Tube

封装/外壳

8-SOIC(0.154",3.90mm 宽)

封装/箱体

SOIC-8

工作温度

-40°C ~ 85°C

工作电源电压

36 V

工厂包装数量

75

放大器类型

差分

最大工作温度

+ 125 C

最小工作温度

- 55 C

标准包装

75

电压-电源,单/双 (±)

4.5 V ~ 36 V, ±2.25 V ~ 18 V

电压-输入失调

200µV

电流-电源

570µA

电流-输入偏置

50nA

电流-输出/通道

15mA

电源电流

0.7 mA

电路数

1

系列

INA145

输入补偿电压

1 mV

输出类型

-

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PDF Datasheet 数据手册内容提取

® INA145 INA145 For most current data sheet and other product information, visit www.burr-brown.com Programmable Gain DIFFERENCE AMPLIFIER FEATURES DESCRIPTION l DIFFERENTIAL GAIN = 1V/V TO 1000V/V: The INA145 is a precision, unity-gain difference Set with External Resistors amplifier consisting of a precision op amp and on- l LOW QUIESCENT CURRENT: 570m A chip precision resistor network. Two external resistors set the gain from 1V/V to 1000V/V. The input com- l WIDE SUPPLY RANGE: mon-mode voltage range extends beyond the positive Single Supply: 4.5V to 36V – – and negative rails. Dual Supplies: 2.25V to 18V l HIGH COMMON-MODE VOLTAGE: On-chip precision resistors are laser-trimmed to achieve accurate gain and high common-mode rejection. Ex- +8V at V = +5V – S – cellent TCR tracking of these resistors assures contin- 28V at V = 15V S ued high precision over temperature. l LOW GAIN ERROR: 0.01% The INA145 is available in the SO-8 surface-mount l HIGH CMR: 86dB package specified for the extended industrial tempera- l SO-8 PACKAGE ture range, –40(cid:176) C to +85(cid:176) C. APPLICATIONS l CURRENT SHUNT MEASUREMENTS l SENSOR AMPLIFIER l DIFFERENTIAL LINE RECEIVER l BATTERY POWERED SYSTEMS R R G1 G2 V+ 7 RG 5 R R 1 2 40kW 40kW 2 VIN– R5 10kW (1%) A2 V 6 O G = 1 A1 V = (V+ – V–)(1 + R /R ) O IN IN G2 G1 R R 3 4 40kW 40kW 3 V+ IN INA145 4 1 8 V– Ref V 01 International Airport Industrial Park • Mailing Address: PO Box 11400, Tucson, AZ 85734 • Street Address: 6730 S. Tucson Blvd., Tucson, AZ 85706 • Tel: (520) 746-1111 Twx: 910-952-1111 • Internet: http://www.burr-brown.com/ • Cable: BBRCORP • Telex: 066-6491 • FAX: (520) 889-1510 • Immediate Product Info: (800) 548-6132 ® ©1999 Burr-Brown Corporation PDS-11567B PrIiNnteAd in1 U4.S5.A. March, 2000 SBOS120

– – SPECIFICATIONS: V = 2.25V to 18V S (cid:176) (cid:176) Boldface limits apply over the specified temperature range, T = –40 C to +85 C A At T = +25(cid:176)C, G = 1, R = 10kW connected to ground and ref pin connected to ground unless otherwise noted. A L INA145UA PARAMETER CONDITION MIN TYP MAX UNITS OFFSET VOLTAGE, V RTI(1, 2) O Input Offset Voltage V V = V = 0V – 0.2 – 1 mV OS CM O vs Temperature D V /D T See Typical Curve OS vs Power Supply PSRR V = – 1.35V to – 18V – 20 – 60 m V/V S vs Time – 0.3 m V/mo Offset Voltage, V RTI(1, 2) – 0.4 mV 01 INPUT VOLTAGE RANGE Common-Mode Voltage Range V (V +) – (V –) = 0V, V = 0V 2(V–) 2(V+) –2 V CM IN IN O Common-Mode Rejection CMRR V = 2(V–) to 2(V+) – 2V, R = 0W 76 86 dB CM S Over Temperature V = – 15V 70 80 dB S INPUT BIAS CURRENT(2) V = V /2 CM S Bias Current I – 50 nA B Offset Current I – 5 nA OS INPUT IMPEDANCE Differential (non-inverting input) 80 kW Differential (inverting input) 27 kW Common-Mode 40 kW NOISE RTI(1, 3) Voltage Noise, f = 0.1Hz to 10Hz 2 m Vp-p Voltage Noise Density, f = 1kHz e 90 nV/(cid:214) Hz n GAIN G = 1 to 1000 Gain Equation G = 1 + R /R V/V G2 G1 Initial(1) 1 V/V Gain Error R = 100kW , V = (V–)+0.15 to (V+)–1, G = 1 – 0.01 – 0.1 % L O vs Temperature R = 100kW , V = (V–)+0.25 to (V+)–1, G = 1 – 2 – 10 ppm/(cid:176)C L O R = 10kW , V = (V–)+0.3 to (V+)–1.25, G = 1 – 0.01 – 0.1 % L O vs Temperature R = 10kW , V = (V–)+0.5 to (V+)–1.25, G = 1 – 2 – 10 ppm/(cid:176)C L O Nonlinearity R = 10kW , V = (V–)+0.3 to (V+)–1.25, G = 1 – 0.0002 – 0.005 % of FS L O FREQUENCY RESPONSE Small Signal Bandwidth G = 1 500 kHz G = 10 50 kHz Slew Rate 0.45 V/m s Settling Time, 0.1% G = 1, 10V Step 40 m s 0.01% G = 1, 10V Step 90 m s Overload Recovery 50% Input Overload 40 m s OUTPUT, V O Voltage Output R = 100kW , G = 1 (V–) + 0.15 (V+) – 1 V L Over Temperature R = 100kW , G = 1 (V–) + 0.25 (V+) – 1 V L R = 10kW , G = 1 (V–) + 0.3 (V+) – 1.25 V L Over Temperature R = 10kW , G = 1 (V–) + 0.5 (V+) – 1.25 V L Short-Circuit Current Continuous to Common – 15 mA Capacitive Load Stable Operation 1000 pF POWER SUPPLY Specified Voltage Range, Dual Supplies – 2.25 – 18 V Operating Voltage Range – 1.35 – 18 V Quiescent Current V = 0, I = 0 – 570 – 700 m A IN O Over Temperature – 800 m A TEMPERATURE RANGE Specified Range –40 +85 (cid:176)C Operating Range –55 +125 (cid:176)C Storage Range –55 +125 (cid:176)C Thermal Resistance q 150 (cid:176)C/W JA NOTES: (1) Referred to input pins (V + and V –), Gain = 1V/V. Specified with 10kW in feedback of A2. (2) Input offset voltage specification includes effects of amplifier’s IN IN input bias and offset currents. (3) Includes effects of input bias current noise and thermal noise contribution of resistor network. The information provided herein is believed to be reliable; however, BURR-BROWN assumes no responsibility for inaccuracies or omissions. BURR-BROWN assumes no responsibility for the use of this information, and all use of such information shall be entirely at the user’s own risk. Prices and specifications are subject to change without notice. No patent rights or licenses to any of the circuits described herein are implied or granted to any third party. BURR-BROWN does not authorize or warrant any BURR-BROWN product for use in life support devices and/or systems. ® INA145 2

SPECIFICATIONS: V = +5V Single Supply S (cid:176) (cid:176) Boldface limits apply over the specified temperature range, T = –40 C to +85 C A At T = +25(cid:176)C, G = 1, R = 10kW connected to ground and ref pin connected to 2.5V unless otherwise noted. A L INA145UA PARAMETER CONDITION MIN TYP MAX UNITS OFFSET VOLTAGE, V RTI(1, 2) O Input Offset Voltage V V = V = 2.5V – 0.35 – 1 mV OS CM O vs Temperature D V /D T See Typical Curve OS vs Power Supply Rejection Ratio PSRR V = – 1.35V to – 18V – 20 – 60 m V/(cid:176)C S vs Time – 0.3 m V/mo Offset Voltage, V RTI(1, 2) – 0.55 mV 01 INPUT VOLTAGE RANGE Common-Mode Voltage Range(3) V V + – V – = 0V, V = 2.5V –2.5 5.5 V CM IN IN O Common-Mode Rejection Ratio CMRR V = –2.5V to +5.5V, R = 0W 76 86 dB CM S Over Temperature 80 dB INPUT BIAS CURRENT(2) Bias Current I – 50 nA B Offset Current I – 5 nA OS INPUT IMPEDANCE Differential (non-inverting input) 80 kW Differential (inverting input) 27 kW Common-Mode 40 kW NOISE RTI(1, 4) Voltage Noise, f = 0.1Hz to 10Hz 2 m Vp-p Voltage Noise Density, f = 1kHz e 90 nV/(cid:214) Hz n GAIN G = 1 to 1000 V/V Gain Equation G = 1 + R /R V/V G2 G1 Initial(1) 1 V/V Gain Error R = 100kW , V = 0.15V to 4V, G = 1 – 0.01 – 0.1 % L O vs Temperature R = 100kW , V = 0.25V to 4V, G = 1 – 2 – 10 ppm/(cid:176)C L O R = 10kW , V = 0.3V to 3.75V, G = 1 – 0.01 – 0.1 % L O vs Temperature R = 10kW , V = 0.5V to 3.75V, G = 1 – 2 – 10 ppm/(cid:176)C L O Nonlinearity R = 10kW , V = +0.3 to +3.75, G = 1 – 0.001 – 0.005 % of FS L O FREQUENCY RESPONSE Small Signal Bandwidth G = 0.1 500 kHz G = 1 50 kHz Slew Rate 0.45 V/m s Settling Time, 0.1% G = 1, 10V Step 40 m s 0.01% G = 1, 10V Step 90 m s Overload Recovery 50% Input Overload 40 m s OUTPUT, V O Voltage Output R = 100kW , G = 1 0.15 4 V L Over Temperature R = 100kW , G = 1 0.25 4 V L R = 10kW , G = 1 0.3 3.75 V L Over Temperature R = 10kW , G = 1 0.5 3.75 V L Short-Circuit Current Continuous to Common – 15 mA Capacitive Load Stable Operation 1000 pF POWER SUPPLY Specified Voltage Range, Single Supply +4.5 +36 V Operating Voltage Range +2.7 +36 V Quiescent Current V = 0, I = 0 550 700 m A IN O Over Temperature 800 m A TEMPERATURE RANGE Specified Range –40 +85 (cid:176)C Operating Range –55 +125 (cid:176)C Storage Range –55 +125 (cid:176)C Thermal Resistance q 150 (cid:176)C/W JA NOTES: (1) Referred to input pins (V + and V –), Gain = 1V/V. Specified with 10kW in feedback of A2. (2) Input offset voltage specification includes effects of IN IN amplifier’s input bias and offset currents. (3) Common-mode voltage range with single supply is 2(V+) – 2V – V to –V . (4) Includes effects of input current REF REF noise and thermal noise contribution of resistor network. ® 3 INA145

AMPLIFIER A1, A2 PERFORMANCE (cid:176) (cid:176) Boldface limits apply over the specified temperature range, T = –40 C to +85 C A At T = +25(cid:176)C, G = 1, R = 10kW connected to ground and ref pin connected to ground unless otherwise noted. A L INA145UA PARAMETER CONDITION MIN TYP MAX UNITS OFFSET VOLTAGE, V RTI(1, 2) O Input Offset Voltage V V = – 15V, V = V = 0V – 0.5 mV OS S CM O vs Temperature D V /D T – 1 m V/(cid:176)C OS INPUT VOLTAGE RANGE Common-Mode Voltage Range V V + – V – = 0V, V = 0V (V–) to (V+) –1 V CM IN IN O Common-Mode Rejection Ratio CMRR V = (V–) to (V+) –1 90 dB CM OPEN-LOOP GAIN Open Loop Gain A 110 dB OL INPUT BIAS CURRENT(2) Bias Current I – 50 nA B Offset Current I – 5 nA OS RESISTOR AT A1 OUTPUT, V O1 Initial 10 kW Error – 0.2 % Temperature Drift Coefficient – 50 ppm/(cid:176)C PIN CONFIGURATION ELECTROSTATIC Top View SO-8 DISCHARGE SENSITIVITY This integrated circuit can be damaged by ESD. Burr-Brown Ref 1 8 V recommends that all integrated circuits be handled with O1 V– 2 7 V+ appropriate precautions. Failure to observe proper handling IN and installation procedures can cause damage. V+ 3 6 V IN O ESD damage can range from subtle performance degradation V– 4 5 R G to complete device failure. Precision integrated circuits may be more susceptible to damage because very small parametric changes could cause the device not to meet its published specifications. ABSOLUTE MAXIMUM RATINGS(1) Supply Voltage, V+ to V–....................................................................36V Signal Input Terminals, Voltage........................................................– 80V Current.......................................................– 1mA Output Short Circuit (to ground)..............................................Continuous Operating Temperature..................................................–55(cid:176)C to +125(cid:176)C Storage Temperature.....................................................–55(cid:176)C to +150(cid:176)C Junction Temperature....................................................................+150(cid:176)C Lead Temperature (soldering, 10s)...............................................+240(cid:176)C NOTE: (1) Stresses above these ratings may cause permanent damage. Exposure to absolute maximum conditions for extended periods may degrade device reliability. PACKAGE/ORDERING INFORMATION PACKAGE SPECIFIED DRAWING TEMPERATURE PACKAGE ORDERING TRANSPORT PRODUCT PACKAGE NUMBER RANGE MARKING NUMBER(1) MEDIA INA145UA SO-8 182 –40(cid:176)C to +85(cid:176)C INA145UA INA145UA Rails " " " " " INA145UA/2K5 Tape and Reel NOTE: (1) Models with a slash (/) are available only in Tape and Reel in the quantities indicated (e.g., /2K5 indicates 2500 devices per reel). Ordering 2500 pieces of “INA145UA/2K5” will get a single 2500-piece Tape and Reel. ® INA145 4

TYPICAL PERFORMANCE CURVES At T = +25(cid:176)C, V = – 15V, G = 1, R = 10kW connected to ground and Ref pin connected to ground, unless otherwise noted. A S L GAIN vs FREQUENCY GAIN vs FREQUENCY 60 60 V = – 15V V = – 15V S S C = 1000pF C = 200pFœœ 10kW G = 100 L G = 100 L 40 40 B) B) G = 10 Gain (d 20 Gain (d 20 Voltage 0 G = 10 Voltage 0 G = 1 G = 1 –20 –20 100 1K 10K 100K 1M 10M 100 1K 10K 100K 1M 10M Frequency (Hz) Frequency (Hz) COMMON-MODE REJECTION vs FREQUENCY POWER SUPPLY REJECTION vs FREQUENCY 100 100 PSR+ (V = – 15V) Rejection (dB) 8600 Rejection (dB) 8600 S (VSP S= R++5V) ode 40 ply 40 M p n- Su mo er m 20 w 20 Co Po PSR– (V = – 15V) S 0 0 10 100 1k 10k 100k 1M 10M 1 10 100 1k 10k 100k Frequency (Hz) Frequency (Hz) 0.1Hz to 10Hz VOLTAGE NOISE (RTI) INPUT VOLTAGE NOISE DENSITY 1k z H (cid:214)V/ G = 1 n se ( div Noi 100 nV/ age 500 olt G = 100 V put G = 10 n I 10 0.1 1 10 100 1k 10k 100k 500ms/div Frequency (Hz) ® 5 INA145

TYPICAL PERFORMANCE CURVES (Cont.) At T = +25(cid:176)C, V = – 15V, G = 1, R = 10kW connected to ground and Ref pin connected to ground, unless otherwise noted. A S L QUIESCENT CURRENT AND SHORT-CIRCUIT CURRENT vs TEMPERATURE SLEW RATE vs TEMPERATURE 670 20 0.6 G = 1 G = 1 650 18 I 0.55 SC 630 16 0.5 610 14 590 12 µs) 0.45 µI (A)Q 557500 IQ 180 I (mA)SC w Rate (V/ 00.3.45 530 6 Se 0.3 510 4 0.25 490 2 470 0 0.2 –60 –40 –20 0 20 40 60 80 100 120 140 –60 –40 –20 0 20 40 60 80 100 120 140 Temperature (°C) Temperature (°C) GAIN AND PHASE vs FREQUENCY Op Amp A1 and A2 SETTLING TIME vs LOAD CAPACITANCE 110 160 100 G 140 90 R = 10kW || 200pF G = 1 G = 10 L 80 120 0.01% 0.01% B) F Open-Loop Gain (d 765432000000 RL = 1nF ––91035 °Phase () µSettling Time (s) 108640000 G0. 1=% 1 G0 .=1 %10 10 20 0 –10 –180 0 1 10 100 1k 10k 100k 1M 1 10 100 Frequency (Hz) Load Capacitance (nF) MAXIMUM OUTPUT VOLTAGE SWING OFFSET VOLTAGE vs OUTPUT CURRENT PRODUCTION DISTRIBUTION 15 V = – 2.25V Typical Production S Distribution of 10 V) –25°C Packaged Units. g ( +125°C +85°C +25°C y win 5 enc Output Voltage S –05 +–12255°°CC –5–55°5C°C +85°C +25°C Relative Frequ –10 –15 0 2 4 6 8 10 12 14 16 1 8 6 4 2 0 2 4 6 8 1 Output Current (mA) – 0. 0. 0. 0. 0. 0. 0. 0. – – – – Offset Voltage, RTI (mV) ® INA145 6

TYPICAL PERFORMANCE CURVES (Cont.) At T = +25(cid:176)C, V = – 15V, G = 1, R = 10kW connected to ground and Ref pin connected to ground, unless otherwise noted. A S L OFFSET VOLTAGE OFFSET VOLTAGE DRIFT PRODUCTION DISTRIBUTION PRODUCTION DISTRIBUTION 20 V = – 15V Typical Production V = – 15V S S Distribution of Packaged Devices 15 e Frequency ve Frequency 10 Relativ Relati 5 0 098765432101234567890 –1 0.8 0.6 0.4 0.2 0 0.2 0.4 0.6 0.8 1 –1––––––––– 1 – – – – Offset Voltage Drift, RTI (µV/°C) Offset Voltage, RTI (mV) SMALL-SIGNAL STEP RESPONSE SMALL-SIGNAL STEP RESPONSE (G = 1, RL = 10kW , CL = 200pF) (G = 1, CL = 1000pF) div div V/ V/ m m 0 0 5 5 5m s/div 5m s/div SMALL-SIGNAL STEP RESPONSE LARGE-SIGNAL STEP RESPONSE (G = 10, C = 1000pF) (G = 10, R = 10kW , C = 200pF) L L L v mV/di V/div 0 5 5 5m s/div 50m s/div ® 7 INA145

APPLICATION INFORMATION SETTING THE GAIN The gain of the INA145 is set by using two external The INA145 is a programmable gain difference amplifier resistors, R and R , according to the equation: consisting of a gain of 1 difference amplifier and a program- G1 G2 mable-gain output buffer stage. Basic circuit connections are G = 1 + R /R G2 G1 shown in Figure 1. Power supply bypass capacitors should be connected close to pins 4 and 7, as shown. The amplifier For a total gain of 1, A2 is connected as a buffer amplifier is programmable in the range of G = 1 to G = 1000 with two with no R . A feedback resistor, R = 10kW , should be G1 G2 external resistors. used in the buffer connection. This provides bias current cancellation (in combination with internal R ) to assure The output of A1 is connected to the noninverting input of 5 A2 through a 10kW resistor which is trimmed to – 1% specified offset voltage performance. Commonly used val- ues are shown in the table of Figure 1. Resistor values for absolute accuracy. The A2 input is available for applications other gains should be chosen to provide a 10kW parallel such as a filter or a precision current source. See application resistance. figures for examples. COMMON-MODE RANGE OPERATING VOLTAGE The input resistors of the INA145 provides an input com- The INA145 is fully specified for supply voltages from mon-mode range that extends well beyond the power supply – 2.25V to – 18V, with key parameters guaranteed over the rails. Exact range depends on the power supply voltage and temperature range –40(cid:176) C to +85(cid:176) C. The INA145 can be the voltage applied to the Ref terminal (pin 1). To assure operated with single or dual supplies, with excellent perfor- proper operation, the voltage at the non-inverting input of mance. Parameters that vary significantly with operating A1 (an internal node) must be within its linear operating voltage, load conditions, or temperature are shown in the range. Its voltage is determined by the simple 1:1 voltage typical performance curves. divider between pin 3 and pin 1. This voltage must be between V– and (V+) – 1V. +VS RG1 RG2 0.1µF R B 7 5 R R 1 2 40kW 40kW VIN– 2 R5 VO = (VI+N – VI–N)(1 + RG2/RG1) 10kW (1%) A2 V O 6 A1 STANDARD 1% RESISTORS 40Rk3W 40Rk4W TOT(AVL/V G)AIN A2(V G/VA)IN R(WG1) R(WG2) (RWB) VI+N 3 INA145 1 1 (None) 10k — 2 2 20k 20k — 4 1 8 0.1µF 5 5 12.4k 49.9k — 10 10 11.0k 100k — V 01 20 20 10.5k 200k — 50 50 10.2k 499k — –V 100 100 10.2k 1M — S 200 200 499 100k 9.53k 500 500 100 49.9k 10k 1000 1000 100 100k 10k FIGURE 1. Basic Circuit Connections. ® INA145 8

OFFSET TRIM INPUT IMPEDANCE The INA145 is laser-trimmed for low offset voltage and The input impedance of the INA145 is determined by the drift. Most applications require no external offset adjust- input resistor network and is approximately 40kW . The ment. Figure 2 shows an optional circuit for trimming the source impedance at the two input terminals must be nearly offset voltage. A voltage applied to the Ref terminal will equal to maintain good common-mode rejection. A 5W be summed with the output signal. This can be used to null mismatch in impedance between the two inputs will cause offset voltage. To maintain good common-mode rejection, the typical common-mode rejection to be degraded to ap- the source impedance of a signal applied to the Ref proximately 72dB. Figure 7 shows a common application terminal should be less than 10W and a resistor added to measuring power supply current through a shunt resistor. the positive input terminal should be 10 times that, or The source impedance of the shunt resistor, R , is balanced 100W . Alternatively, the trim voltage can be buffered with by an equal compensation resistor, R . S C an op amp such as the OPA277. Source impedances greater than 300W are not recommended, even if they are perfectly matched. Internal resistors are laser trimmed for accurate ratios, not to absolute values. Adding equal resistors greater than 300W can cause a mismatch in the total resistor ratios, degrading CMR. 10kW 5 40kW 40kW V– IN 10kW A2 V O 10W 40kW A1 6 V+ IN 40kW INA145 1 Offset Adjus(–tm1.e5nmt VR aant gpein = 1 –)15mV, RTI VO1 10R0TkW +15V 100kW 10W NOTE: Increasing the trim resistor R will decrease the trim range –15V T FIGURE 2. Optional Offset Trim Circuit. R R V+ 10.2Gk1W 1MGW2 +5V 5 7 R S 1Ω 2 G = 100 VB IL 10kW V = 100 IR O L S 6 Load 3 INA145 V+ Max V B 4 1 8 +5V 8V +7V 12V +10V 18V +15V 28V FIGURE 3. Measuring Current with Shunt Resistor. ® 9 INA145

10kW Pole at 106Hz G = 1 1500pF 5 R R 10GkW1 1MGW2 VI–N 2 5 6 V O 2 V– IN 10kW V V+ 3 6 O IN INA145 1 8 V+ 3 R4 R3 IN R INA145 G = 3 R + R 3 4 1 8 22nF G ≤ 1 Pole at 720Hz FIGURE 4. Noise Filtering. FIGURE 5. Creating Gains Less Than Unity. R G2 10kW 5 R R V– 2 1 2 IN 0V £ V £ 5V O Alternate 10kW VO Soft Clamp 6 To Pin 8 R R 3 4 V+ 3 IN INA145 1 8 1N914 1N4684 (3.3V) 1N914 Voltage 5.0V (1) Reference or Analog-to-Digital V S 1N914 (1) NOTE: (1) 1/2 OPA2342 with V connected to +5V and GND. S FIGURE 6. Clamp Circuits. ® INA145 10

R R G1 G2 11kW 100kW Power Supply 5 2 For sense resistors (R ) S greater than 5W , use G = 10 series compensation RC resistor (RC) for good 10W VO common-mode rejection. 6 Sense resistors greater than 200W are not RS recommended. 10W 3 INA145 Load 1 8 V O1 FIGURE 7. Current Monitor, G = 1. +5V 24V Feedback 8.4kW 7 5 2 8kW 1V V 6 O 10kW SHUNT R-I Lamp/10 1V – 50mV e.g., 0.1W for 1A 3 2kW INA145 4 1 8 10MW Lamp FIGURE 8. Comparator Output with Optional Hysteresis Application to Sense Lamp Burn-Out. RG1 RG2 11kW 100kW R G2 10kW 5 V– 2 5 IN V– 2 IN 6 V O 6 10kW V O VI+N 3 INA145 1RM1W 1 8 0.C1µ1F VI+N 3 INA145 1 8 Pole at f = 2 p R 1 R = 1.6Hz OPA277 IOUT = (VI+N – VI–N)/10kW 1 C FIGURE 9. AC Coupling (DC Restoration). FIGURE 10. Precision Current Source. ® 11 INA145

PACKAGE OPTION ADDENDUM www.ti.com 16-Feb-2009 PACKAGING INFORMATION OrderableDevice Status(1) Package Package Pins Package EcoPlan(2) Lead/BallFinish MSLPeakTemp(3) Type Drawing Qty INA145UA ACTIVE SOIC D 8 75 Green(RoHS& CUNIPDAU Level-3-260C-168HR noSb/Br) INA145UA/2K5 ACTIVE SOIC D 8 2500 Green(RoHS& CUNIPDAU Level-3-260C-168HR noSb/Br) INA145UA/2K5E4 ACTIVE SOIC D 8 2500 Green(RoHS& CUNIPDAU Level-3-260C-168HR noSb/Br) INA145UAE4 ACTIVE SOIC D 8 75 Green(RoHS& CUNIPDAU Level-3-260C-168HR noSb/Br) (1)Themarketingstatusvaluesaredefinedasfollows: ACTIVE:Productdevicerecommendedfornewdesigns. LIFEBUY:TIhasannouncedthatthedevicewillbediscontinued,andalifetime-buyperiodisineffect. NRND:Notrecommendedfornewdesigns.Deviceisinproductiontosupportexistingcustomers,butTIdoesnotrecommendusingthispartin anewdesign. PREVIEW:Devicehasbeenannouncedbutisnotinproduction.Samplesmayormaynotbeavailable. OBSOLETE:TIhasdiscontinuedtheproductionofthedevice. (2)EcoPlan-Theplannedeco-friendlyclassification:Pb-Free(RoHS),Pb-Free(RoHSExempt),orGreen(RoHS&noSb/Br)-pleasecheck http://www.ti.com/productcontentforthelatestavailabilityinformationandadditionalproductcontentdetails. TBD:ThePb-Free/Greenconversionplanhasnotbeendefined. Pb-Free(RoHS):TI'sterms"Lead-Free"or"Pb-Free"meansemiconductorproductsthatarecompatiblewiththecurrentRoHSrequirements forall6substances,includingtherequirementthatleadnotexceed0.1%byweightinhomogeneousmaterials.Wheredesignedtobesoldered athightemperatures,TIPb-Freeproductsaresuitableforuseinspecifiedlead-freeprocesses. Pb-Free(RoHSExempt):ThiscomponenthasaRoHSexemptionforeither1)lead-basedflip-chipsolderbumpsusedbetweenthedieand package, or 2) lead-based die adhesive used between the die and leadframe. The component is otherwise considered Pb-Free (RoHS compatible)asdefinedabove. Green(RoHS&noSb/Br):TIdefines"Green"tomeanPb-Free(RoHScompatible),andfreeofBromine(Br)andAntimony(Sb)basedflame retardants(BrorSbdonotexceed0.1%byweightinhomogeneousmaterial) (3) MSL, Peak Temp. -- The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder temperature. Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is provided. TI bases its knowledge and belief on information provided by third parties, and makes no representation or warranty as to the accuracy of such information. Efforts are underway to better integrate information from third parties. TI has taken and continues to take reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on incomingmaterialsandchemicals.TIandTIsuppliersconsidercertaininformationtobeproprietary,andthusCASnumbersandotherlimited informationmaynotbeavailableforrelease. InnoeventshallTI'sliabilityarisingoutofsuchinformationexceedthetotalpurchasepriceoftheTIpart(s)atissueinthisdocumentsoldbyTI toCustomeronanannualbasis. Addendum-Page1

PACKAGE MATERIALS INFORMATION www.ti.com 11-Mar-2008 TAPE AND REEL INFORMATION *Alldimensionsarenominal Device Package Package Pins SPQ Reel Reel A0(mm) B0(mm) K0(mm) P1 W Pin1 Type Drawing Diameter Width (mm) (mm) Quadrant (mm) W1(mm) INA145UA/2K5 SOIC D 8 2500 330.0 12.4 6.4 5.2 2.1 8.0 12.0 Q1 PackMaterials-Page1

PACKAGE MATERIALS INFORMATION www.ti.com 11-Mar-2008 *Alldimensionsarenominal Device PackageType PackageDrawing Pins SPQ Length(mm) Width(mm) Height(mm) INA145UA/2K5 SOIC D 8 2500 346.0 346.0 29.0 PackMaterials-Page2

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