Datasheet

ManualsBrandsTEXAS INSTRUMENTS ManualsLinear ICsLinear IC - In-amp, Op-amp InAmp SOIC 16

FEATURES

● LOW OFFSET VOLTAGE: 50µV max

● LOW DRIFT: 0.5

µV/°C max

● EXCELLENT GAIN ACCURACY:

±0.05% max at G = 10

● LOW INPUT BIAS CURRENT: 5nA max

● HIGH CMR: 117dB min (G = 100)

● INPUTS PROTECTED TO

±40V

● WIDE SUPPLY RANGE:

±2.25V to ±18V

● LOW QUIESCENT CURRENT: 750

µA/IA

● 16-PIN PLASTIC DIP, SOL-16

DESCRIPTION

The INA2141 is a low power, dual instrumentation

amplifier offering excellent accuracy. Its versatile

3-op amp design and small size make it ideal for a

wide range of applications. Current-feedback input

circuitry provides wide bandwidth even at high gain

(200kHz at G = 100).

Simple pin connections set an accurate gain of 10 or

100V/V without external resistors. Internal input pro-

tection can withstand up to ±40V without damage.

The INA2141 is laser trimmed for very low offset

voltage (50µV), drift (0.5µV/°C) and high common-

mode rejection (117dB at G = 100). It operates with

power supplies as low as ±2.25V, and quiescent cur-

rent is only 750µA per amplifier—ideal for battery

operated systems.

Packages are 16-pin plastic DIP, and SOL-16

surface-mount, specified for the –40°C to +85°C

temperature range.

Dual, Low Power, G = 10, 100

INSTRUMENTATION AMPLIFIER

APPLICATIONS

● SENSOR AMPLIFIER

THERMOCOUPLE, RTD, BRIDGE

● MEDICAL INSTRUMENTATION

● MULTIPLE CHANNEL SYSTEMS

INA2141

40kΩ40kΩ

INA

G = 10

100

V+

V–

INA2141

Ref

–

Over-Voltage

Protection

25kΩ

Over-Voltage

Protection

40kΩ40kΩ

INB

Ref

–

Over-Voltage

Protection

25kΩ

Over-Voltage

Protection

G = 10

100

5050Ω

252Ω

5050Ω

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/ • FAXLine: (800) 548-6133 (US/Canada Only) • Cable: BBRCORP • Telex: 066-6491 • FAX: (520) 889-1510 • Immediate Product Info: (800) 548-6132

INA2141

SBOS036

Summary of content (15 pages)

PAGE 1
INA ® INA2141 214 INA 1 214 1 Dual, Low Power, G = 10, 100 INSTRUMENTATION AMPLIFIER FEATURES DESCRIPTION ● LOW OFFSET VOLTAGE: 50µV max ● LOW DRIFT: 0.5µV/°C max The INA2141 is a low power, dual instrumentation amplifier offering excellent accuracy. Its versatile 3-op amp design and small size make it ideal for a wide range of applications. Current-feedback input circuitry provides wide bandwidth even at high gain (200kHz at G = 100). ● EXCELLENT GAIN ACCURACY: ±0.
PAGE 2
SPECIFICATIONS At TA = +25°C, VS = ±15V, and RL = 10kΩ, unless otherwise noted. INA2141P, U PARAMETER CONDITIONS INPUT Offset Voltage, RTI vs Temperature vs Power Supply Long-Term Stability Safe Input Voltage Common-Mode Rejection TYP MAX ±50 ±100 ±0.5 ±2 ±2 ±10 (V+) – 2 (V–) + 2 ±20 ±50 ±0.2 ±0.5 ±1 ±2 0.2 0.5 1010 || 2 1010 || 9 (V+) – 1.4 (V–) + 1.7 117 97 125 106 G = 100 G = 10 G = 100 G = 10(2) VS = ±2.
PAGE 3
PIN CONFIGURATION Top View ELECTROSTATIC DISCHARGE SENSITIVITY DIP SOL-16 – VINA 1 – 16 VINB + VINA 2 + 15 VINB JA 3 14 JB JA 4 13 JB RefA 5 12 RefB VOA 6 11 VOB SenseA 7 10 SenseB V– 8 9 This integrated circuit can be damaged by ESD. Burr-Brown recommends that all integrated circuits be handled with appropriate precautions. Failure to observe proper handling and installation procedures can cause damage.
PAGE 4
TYPICAL PERFORMANCE CURVES At TA = +25°C, and VS = ±15V, unless otherwise noted.
PAGE 5
TYPICAL PERFORMANCE CURVES (CONT) At TA = +25°C, and VS = ±15V, unless otherwise noted. CROSSTALK vs FREQUENCY INPUT- REFERRED NOISE vs FREQUENCY G = 100V/V 120 G = 10V/V Crosstalk (dB) 100 80 60 40 20 0 100 1k 10 100 G = 10V/V 1 10 G = 100 Current Noise 0.
PAGE 6
TYPICAL PERFORMANCE CURVES (CONT) At TA = +25°C, and VS = ±15V, unless otherwise noted. OUTPUT VOLTAGE SWING vs POWER SUPPLY VOLTAGE V+ (V+)–0.4 (V+)–0.4 Output Voltage Swing (V) (V+) (V+)–0.8 (V+)–1.2 (V+)+1.2 (V–)+0.8 +25°C +85°C (V+)–0.8 –40°C (V+)–1.2 RL = 10kΩ (V–)+1.2 +25°C –40°C (V–)+0.8 (V–)+0.4 (V–)+0.
PAGE 7
TYPICAL PERFORMANCE CURVES (CONT) At TA = +25°C, and VS = ±15V unless otherwise noted.
PAGE 8
APPLICATION INFORMATION Internal resistor ratios are laser trimmed to assure excellent gain accuracy. Actual resistor values can vary by approximately ±25% from the nominal values shown. Figure 1 shows the basic connections required for operation of the INA2141. Applications with noisy or high impedance power supplies may require decoupling capacitors close to the device pins as shown. Gains between 10 and 100 can be achieved by connecting an external resistor to the jumper pins.
PAGE 9
OFFSET TRIMMING The INA2141 is laser trimmed for low offset voltage and offset voltage drift. Most applications require no external offset adjustment. Figure 2 shows an optional circuit for trimming the output offset voltage. The voltage applied to Ref terminal is summed with the output. The op amp buffer provides low impedance at the Ref terminal to preserve good common-mode rejection. – VIN VO 1/2 INA2141 47kΩ V+ 1/2 INA2141 V+ Microphone, Hydrophone etc.
PAGE 10
INPUT PROTECTION The inputs of the INA2141 are individually protected for voltages up to ±40V. For example, a condition of –40V on one input and +40V on the other input will not cause damage. Internal circuitry on each input provides low series impedance under normal signal conditions. To provide equivalent protection, series input resistors would contribute excessive noise. If the input is overloaded, the protection circuitry limits the input current to a safe value of approximately 1.5 to 5mA.
PAGE 11
PACKAGE OPTION ADDENDUM www.ti.
PAGE 12
PACKAGE OPTION ADDENDUM www.ti.com 11-Jul-2013 (5) Multiple Device Markings will be inside parentheses. Only one Device Marking contained in parentheses and separated by a "~" will appear on a device. If a line is indented then it is a continuation of the previous line and the two combined represent the entire Device Marking for that device. Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is provided.
PAGE 13
PACKAGE MATERIALS INFORMATION www.ti.com 26-Jan-2013 TAPE AND REEL INFORMATION *All dimensions are nominal Device INA2141UA/1K Package Package Pins Type Drawing SOIC DW 16 SPQ Reel Reel A0 Diameter Width (mm) (mm) W1 (mm) 1000 330.0 16.4 Pack Materials-Page 1 10.75 B0 (mm) K0 (mm) P1 (mm) W Pin1 (mm) Quadrant 10.7 2.7 12.0 16.
PAGE 14
PACKAGE MATERIALS INFORMATION www.ti.com 26-Jan-2013 *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) INA2141UA/1K SOIC DW 16 1000 367.0 367.0 38.
PAGE 15
IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, enhancements, improvements and other changes to its semiconductor products and services per JESD46, latest issue, and to discontinue any product or service per JESD48, latest issue. Buyers should obtain the latest relevant information before placing orders and should verify that such information is current and complete.