Datasheet

ManualsBrandsTEXAS INSTRUMENTS ManualsLinear ICsLinear IC - In-amp, Op-amp InAmp SOIC 14

Dual, Low Power, Single-Supply

DIFFERENCE AMPLIFIER

FEATURES

● DESIGNED FOR LOW COST

● LOW QUIESCENT CURRENT:

160µA per Amplifier

● WIDE POWER SUPPLY RANGE:

Single Supply: 2.7V to 36V

Dual Supplies: ±1.35V to ±18V

● LOW GAIN ERROR: ±0.05% max

● LOW NONLINEARITY: 0.001% max

● HIGH CMRR: 90dB

● HIGHLY VERSATILE CIRCUIT

● EASY TO USE

● SO-14 PACKAGE

INA2132

DESCRIPTION

The INA2132 is a dual low power, unity-gain differ-

ence amplifier offering excellent value at very low

cost. Each channel consists of a precision op amp with

a laser-trimmed precision resistor network, providing

accurate gain and high common-mode rejection. Ex-

cellent TCR tracking of the resistors maintains gain

accuracy and common-mode rejection over tempera-

ture. The internal op amp’s common-mode range

extends to the negative supply—ideal for single-sup-

ply applications.

The difference amplifier is the foundation of many

commonly used circuits. The INA2132 provides this

circuit function without using an expensive precision

resistor network. The INA2132 is available in the

SO-14 surface-mount package and is specified for

operation over the extended industrial temperature

range, –40°C to +85°C.

A single version of this product with similar specifi-

cations is also available. See the INA132 data sheet

for details.

APPLICATIONS

● DIFFERENTIAL INPUT AMPLIFIER

● INSTRUMENTATION AMPLIFIER

BUILDING BLOCK

● UNITY-GAIN INVERTING AMPLIFIER

● G = 1/2 AMPLIFIER

● G = 2 AMPLIFIER

● SUMMING AMPLIFIER

● DIFFERENTIAL CURRENT RECEIVER

● VOLTAGE-CONTROLLED CURRENT SOURCE

● BATTERY-POWERED SYSTEMS

● GROUND LOOP ELIMINATOR

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

Sense A

INA2132

Out A

V+

Ref A

–In A

+In A

V–

40kΩ 40kΩ

Sense B

Out B

Ref B

–In B

+In B

INA2132

SBOS108

Summary of content (17 pages)

PAGE 1
® INA2132 INA 213 2 Dual, Low Power, Single-Supply DIFFERENCE AMPLIFIER FEATURES APPLICATIONS ● DESIGNED FOR LOW COST ● LOW QUIESCENT CURRENT: 160µA per Amplifier ● WIDE POWER SUPPLY RANGE: Single Supply: 2.7V to 36V Dual Supplies: ±1.35V to ±18V ● LOW GAIN ERROR: ±0.05% max ● LOW NONLINEARITY: 0.
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SPECIFICATIONS: VS = ±15V At TA = +25°C, RL = 10kΩ connected to ground, and reference pins connected to ground unless otherwise noted. INA2132U PARAMETER CONDITIONS VOLTAGE(1) OFFSET Initial vs Temperature vs Power Supply vs Time Channel Separation(2) MIN INA2132UA TYP MAX ±75 ±1 ±5 0.3 0.04 ±250 ±5 ±30 MIN TYP MAX UNITS ✻ ✻ ✻ ✻ ±500 ±10 ✻ µV µV/°C µV/V µV/mo µV/V RTO VOS dVOS /dT PSRR VS = ±1.
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SPECIFICATIONS: VS = +5V Single Supply At TA = +25°C, RL = 10kΩ connected to VS /2, and reference pin connected to VS /2, unless otherwise noted.
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TYPICAL PERFORMANCE CURVES At TA = +25°C and VS = ±15V, unless otherwise noted.
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TYPICAL PERFORMANCE CURVES (CONT) At TA = +25°C and VS = ±15V, unless otherwise noted. SMALL-SIGNAL STEP RESPONSE CL = 200pF SLEW RATE vs TEMPERATURE 0.18 0.14 50mV/div Slew Rate (V/µs) 0.16 0.12 0.10 0.08 0.
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TYPICAL PERFORMANCE CURVES (CONT) At TA = +25°C and VS = ±15V, unless otherwise noted. 0.1Hz to 10Hz PEAK-TO-PEAK VOLTAGE NOISE OFFSET VOLTAGE PRODUCTION DISTRIBUTION 25 0.5µV/div Percent of Amplifiers (%) VS = ±15V 20 15 10 5 500 400 300 200 100 0 –100 –200 –300 –500 –400 0 500ms/div Offset Voltage (µV) OFFSET VOLTAGE PRODUCTION DISTRIBUTION OFFSET VOLTAGE DRIFT PRODUCTION DISTRIBUTION 18 VS = ±15V 35 Percent of Amplifiers (%) 14 12 10 8 6 4 30 25 20 15 10 0.5 1 1.5 2 2.
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APPLICATIONS INFORMATION In the case where VREF is grounded, the equation simplifies to: Figure 1 shows the basic connections required for operation of the INA2132. Power supply bypass capacitors should be connected close to the device pins. 2 • (V–) < VCM < 2 • ((V+) – 1) For more information, see the typical performance curve titled “Input Common-Mode Voltage Range vs Output Voltage.” The differential input signal is connected to pins 2 and 3 (or pins 6 and 5) as shown.
PAGE 8
CAPACITIVE LOAD DRIVE CAPABILITY directly adjacent on the top and bottom sides of a circuit board. Stray coupling then produces a common-mode signal which is rejected by the INA2132’s input. The INA2132 can drive large capacitive loads, even at low supplies. It is stable with a 10nF load. Refer to the “SmallSignal Step Response” and “Settling Time vs Load Capacitance” typical performance curves.
PAGE 9
INA2132 INA2132 2 12 13 A V1 13 A V01 14 3 12 2 V2 14 3 V3 V01 V2 6 6 10 10 9 B 8 5 9 B V02 8 5 VLS Level-Shift Voltage Reference V01 – V02 = 2 (V2 – V1) V01 = (V3 – V2) + FIGURE 8. Differential Output Difference Amplifier. VLS 2 FIGURE 9. Precision Level Shifter. V1 INA2132 –In The INA2132 can be combined with op amps to form a complete instrumentation amplifier with specialized performance characteristics. Burr-Brown offers many complete high performance IAs.
PAGE 10
INA2132 2 (6) INA2132 2 (6) 12 (10) V2 13 (9) 12 (10) 13 (9) V0 V0 3 (5) V1 14 (8) V0 = V1 3 (5) 14 (8) FIGURE 14. Precision Unity-Gain Buffer. V0 = – V2 FIGURE 11. Precision Inverting Unity-Gain Amplifier. INA2132 12 (10) 2 (6) INA2132 2 (6) 13 (9) 12 (10) 3 (5) V0 V1 13 (9) V3 3 (5) 14 (8) V0 = 1/2 V3 V0 = 2 • V1 14 (8) V0 = V3 /2 FIGURE 15. Precision Gain = 2 Amplifier. FIGURE 12. Precision Gain = 1/2 Amplifier.
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PACKAGE OPTION ADDENDUM www.ti.
PAGE 12
PACKAGE OPTION ADDENDUM www.ti.com (3) 11-Apr-2013 MSL, Peak Temp. -- The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder temperature. (4) Multiple Top-Side Markings will be inside parentheses. Only one Top-Side 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 Top-Side Marking for that device.
PAGE 13
PACKAGE MATERIALS INFORMATION www.ti.com 26-Jan-2013 TAPE AND REEL INFORMATION *All dimensions are nominal Device Package Package Pins Type Drawing SPQ Reel Reel A0 Diameter Width (mm) (mm) W1 (mm) B0 (mm) K0 (mm) P1 (mm) W Pin1 (mm) Quadrant INA2132U/2K5 SOIC D 14 2500 330.0 16.4 6.5 9.0 2.1 8.0 16.0 Q1 INA2132UA/2K5 SOIC D 14 2500 330.0 16.4 6.5 9.0 2.1 8.0 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) INA2132U/2K5 SOIC D 14 2500 367.0 367.0 38.0 INA2132UA/2K5 SOIC D 14 2500 367.0 367.0 38.
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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.