Datasheet

ManualsBrandsTEXAS INSTRUMENTS ManualsLinear ICsLinear IC - Op-amp, differential amplifier Differential VSSOP 8

FEATURES

● SWING: to Within 200mV of Either Output Rail

● LOW OFFSET DRIFT: ±3µV/°C

● LOW OFFSET VOLTAGE: ±250µV

● HIGH CMR: 94dB

● LOW GAIN ERROR: 0.01%

● LOW GAIN ERROR DRIFT: 1ppm/°C

● WIDE SUPPLY RANGE:

Single: 2.7V to 20V

Dual: ±1.35V to ±10V

● MSOP-8 PACKAGE

Single-Supply

DIFFERENCE AMPLIFIER

DESCRIPTION

The INA152 is a small (MSOP-8), low-power, unity-

gain difference amplifier consisting of a CMOS op

amp and a precision resistor network. The on-chip

resistors are laser trimmed for accurate gain and high

common-mode rejection. Excellent TCR tracking of

the resistor maintains gain accuracy and common-

mode rejection over temperature. The input common-

mode voltage range extends to above the positive and

APPLICATIONS

● DIFFERENCE INPUT AMPLIFIER

BUILDING BLOCK

● UNITY-GAIN INVERTING AMPLIFIER

● GAIN = 1/2

● AMPLIFIER GAIN = 2 AMPLIFIER

● SUMMING AMPLIFIER

● SYNCHRONOUS DEMODULATOR

● CURRENT AND DIFFERENTIAL LINE

RECEIVER

● VOLTAGE-CONTROLLED CURRENT

SOURCE

● BATTERY-POWERED SYSTEMS

● LOW-COST AUTOMOTIVE INSTRUMEN-

TATION

negative rails and the output swings to within 50mV of

either rail.

The difference amplifier is the foundation of many

commonly used circuits. The INA152 provides preci-

sion circuit function without using an expensive pre-

cision network.

The INA152 is specified for operation over the ex-

tended industrial temperature range, –40°C to +85°C.

INA152

www.ti.com

IN+

V+ V– Ref

40kΩ

IN–

Sense

INA152

74 1

Summary of content (18 pages)

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INA152 www.ti.
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SPECIFICATIONS: VS = ±10V TA = +25°C, VS = ±10V, RL = 10kΩ connected to ground, and reference pin connected to ground, unless otherwise noted. INA152EA PARAMETER OFFSET VOLTAGE Input Offset Voltage vs Temperature vs Power Supply vs Time CONDITIONS MIN RTO(1) (2) VCM = 0V TA = –40°C to +85°C VS = ±1.35V to ±10V TYP MAX UNITS ±250 ±3 5 0.5 ±1500 ±15 30 µV µV/°C µV/V µV/mo 2(V+) – 2 94 V dB 80 80 kΩ kΩ 97 87 2.
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SPECIFICATIONS: VS = +5V TA = +25°C, VS = +5V, Ref connected to VS/2, RL = 10kΩ connected to VS/2, unless otherwise noted. INA152EA PARAMETER CONDITIONS MIN RTO(1) (2) VCM = VOUT = 0V TA = –40°C ≤ TA ≤ 85°C OFFSET VOLTAGE Input Offset Voltage vs Temperature INPUT VOLTAGE RANGE(3) Voltage Range, Common-Mode Common-Mode Rejection VIN+ – VIN– = 0V 0V < VCM < +5V, RSRC = 0Ω OUTPUT Voltage –2.5 80 TYP MAX UNITS ±250 ±3 ±1500 ±15 µV µV/°C +5.5 94 V dB (V–) + 0.05 V V V (V+) – 0.2 (V–) + 0.
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TYPICAL PERFORMANCE CURVES At TA = +25°C, VS = ±10V, RL = 10kΩ connected to GND, and Ref = GND, unless otherwise noted. GAIN vs FREQUENCY COMMON-MODE REJECTION vs FREQUENCY 100 Commom-Mode Rejection (dB) 20 Closed-Loop Gain (dB) CL = 500pF 0 –20 –40 –60 100k 1M 60 40 VS = ±10V or ±2.
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TYPICAL PERFORMANCE CURVES (Cont.) At TA = +25°C, VS = ±10V, RL = 10kΩ connected to GND, and Ref = GND, unless otherwise noted. OUTPUT VOLTAGE SWING vs OUTPUT CURRENT SLEW RATE vs TEMPERATURE 10 0.5 6 Output Voltage Swing (V) Slew Rate (V/µs) 0.45 0.4 0.35 0.3 VS = ±10V +25°C 8 –40°C +85°C 4 2 0 –2 –40°C +85°C –4 +25°C –6 –8 0.25 –10 –60 –40 –20 0 20 40 60 80 100 0 120 2.5 5 2 –40°C Output Voltage Swing (V) Output Voltage Swing (V) +85°C +25°C 0.5 +25°C –0.
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TYPICAL PERFORMANCE CURVES (Cont.) At TA = +25°C, VS = ±10V, RL = 10kΩ connected to GND, and Ref = GND, unless otherwise noted. CL = 470pF LARGE-SIGNAL STEP RESPONSE 2V/div 50mV/div CL = 25 50mV/div SMALL-SIGNAL STEP RESPONSE 50ms/div 25µs/div SETTLING TIME vs LOAD CAPACITANCE INPUT COMMON-MODE VOLTAGE vs OUTPUT VOLTAGE 25 45 VS = ±10V 20 Common-Mode Voltage (V) Settling Time (µs) 40 0.01% 35 30 0.1% 25 15 10 VS = +5V 5 0 –5 VS = ±2.5V –10 –15 –20 20 –25 100 –10 1000 –7.
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TYPICAL PERFORMANCE CURVES (Cont.) At TA = +25°C, VS = ±10V, RL = 10kΩ connected to GND, and Ref = GND, unless otherwise noted. OFFSET VOLTAGE DRIFT OFFSET VOLTAGE DRIFT 40 40 VS = ±10V Percentage of Units (%) Percentage of Units (%) 30 25 20 15 10 25 20 15 10 0 0 1 2 3 4 5 6 7 Offset Voltage Drift (µV/°C) SBOS184 30 5 5 INA152 VS = ±2.
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APPLICATIONS INFORMATION The INA152 is a low-power difference amplifier suitable for a wide range of general-purpose applications. Figure 1 shows the basic connections required for operation of the INA152. Decoupling capacitors are strongly recommended in applications with noisy or high-impedance power supplies. The capacitors should be placed close to the device pins, as shown in Figure 1. As shown in Figure 1, the differential input signal is connected to pins 2 and 3.
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TYPICAL APPLICATIONS V1 –In INA152 A1 2 5 R2 V+ V+ 3 6 R1 INA152 VO 2 R2 5 1 3 7 A2 V2 +In 6 VO = (1 + 2R2/R1) (V2 – V1) The INA152 can be combined with op amps to form a complete Instrumentation Amplifier (IA) with specialized performance characteristics. Texas Instruments offers many complete high performance IAs. Products with related performances are shown at the right in the table below.
PAGE 10
INA152 INA152 5 2 2 6 6 VO = 2 • V1 1 5 VO = V1 + V 3 1 V1 V1 V3 3 FIGURE 7. Precision Gain = 2 Amplifier. 3 FIGURE 10. Precision Summing Amplifier. INA152 +10V 2 2 5 6 +5V Out REF02 6 VO = 3 V3 INA152 2 V3 5 2 4 –5V Out 6 1 3 1 FIGURE 11. ±5V Precision Voltage Reference. FIGURE 8. Precision Gain = 1/2 Amplifier. R1 R2 INA152 2 2 5 INA152 5 6 V1 V3 1 VO = 3 (V1 + V3) 2 6 V1 V3 1 3 ( VO = 1 + FIGURE 9. Precision Average Value Amplifier.
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1 Noise (60Hz hum) INA115 4 A1 2 Transducer or Analog Signal 25kΩ 3 Feedback 12 25kΩ 25kΩ A3 RG Output 11 14 25kΩ 25kΩ G=1+ 50kΩ RG 15 Noise (60Hz hum) 25kΩ A2 5 100kΩ Shield 13 7 V+ 8 10 Ref V– 3 INA152 2 5 6 1 FIGURE 13. Instrumentation Amplifier Guard Drive Generator. INA152 2 INA152 V1 3 A V2 B VO = V3 + V4 – V1 – V2 V3 V4 FIGURE 14. Precision Summing Instrumentation Amplifier.
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INA152 INA152 5 2 V2 R 5 2 6 R V1 A V1 1 3 6 V01 1 3 IO = (V1 – V2) (1/40k + 1/R) Load IO V2 INA152 FIGURE 15. Precision Voltage-to-Current Converter with Differential Inputs. 2 5 INA152 V2 6 V02 B 5 2 1 3 6 R V3 3 V01 – V02 = 2 (V2 – V1) OPA130 1 FIGURE 18. Differential Output Difference Amplifier. IO = (V3 – V2)/R IO Load FIGURE 16. Differential Input Voltage-to-Current Converter for Low IOUT.
PAGE 13
+5V 7 VS INA152 2 5 Transducer or Analog Signal 6 0V-4V Input 1 3 12 Bits Out ADS7806 4 –5V Eliminates errors due to different grounds. FIGURE 20. Differential Input Data Acquisition. INA152 2 5 V1 DG188 6 3 VO 1 Logic In VO 0 –V1 1 +V1 1 Logic In FIGURE 21. Digitally Controlled Gain of ±1 Amplifier. INA152 2 D1 D2 V1 Input R2 –In 1 R3 SBOS184 2 5 6 6 V0 = |V1| BUF634 VO R4 R5 2kΩ FIGURE 22. Precision Absolute Value Buffer.
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PACKAGE OPTION ADDENDUM www.ti.
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PACKAGE OPTION ADDENDUM www.ti.com 18-Oct-2013 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.
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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 INA152EA/250 VSSOP DGK 8 250 180.0 12.4 5.3 3.4 1.4 8.0 12.0 Q1 INA152EA/2K5 VSSOP DGK 8 2500 330.0 12.4 5.3 3.4 1.4 8.0 12.
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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) INA152EA/250 VSSOP DGK INA152EA/2K5 VSSOP DGK 8 250 210.0 185.0 35.0 8 2500 367.0 367.0 35.
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