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Table Of Contents

OUT

V+

V–

+IN

–IN

REF

D PACKAGE

(TOP VIEW)

NC – No internal connection

INA148-Q1

www.ti.com

SBOS472A –MARCH 2009–REVISED OCTOBER 2011

200-V COMMON-MODE VOLTAGE DIFFERENCE AMPLIFIER

Check for Samples: INA148-Q1

FEATURES

APPLICATIONS

• Qualified for Automotive Applications • Current-Shunt Measurements

• High Common-Mode Voltage • Differential Sensor Amplifiers

– 75 V at V

= 5 V • Line Receivers

– ±200 V at V

= ±15 V • Battery-Powered Systems

• Fixed Differential Gain = 1 V/V • Automotive Instrumentation

• Low Quiescent Current: 260 µA • Stacked-Cell Monitors

• Wide Supply Range

– Single Supply: 2.7 V to 36 V

– Dual Supplies: ±1.35 V to ±18 V

• Low Gain Error: 0.075% Max

• Low Nonlinearity: 0.002% Max

• High CMR: 86 dB

• Surface-Mount SO-8 (D) Package

DESCRIPTION

The INA148 is a precision low-power unity-gain difference amplifier with a high common-mode input voltage

range. It consists of a monolithic precision bipolar operational amplifier with a thin-film resistor network.

The on-chip resistors are laser trimmed for an accurate 1-V/V differential gain and high common-mode rejection.

Excellent temperature tracking of the resistor network maintains high gain accuracy and common- mode rejection

over temperature. The INA148 operates on single or dual supplies.

The INA148 is available in a small SO-8 surface-mount package, and it is specified for operation over the

temperature range of –40°C to 125°C.

ORDERING INFORMATION

(1)

PACKAGE

(2)

ORDERABLE PART NUMBER TOP-SIDE MARKING

–40°C to 125°C SOIC – D Reel of 2500 INA148QDRQ1 148Q1

(1) For the most current package and ordering information, see the Package Option Addendum at the end of this document, or see the TI

web site at www.ti.com.

(2) Package drawings, thermal data, and symbolization are available at www.ti.com/packaging.

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas

Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.

Summary of content (21 pages)

PAGE 1
INA148-Q1 SBOS472A – MARCH 2009 – REVISED OCTOBER 2011 www.ti.com ±200-V COMMON-MODE VOLTAGE DIFFERENCE AMPLIFIER Check for Samples: INA148-Q1 FEATURES APPLICATIONS • • • • • • • • 1 • • • • • • • Qualified for Automotive Applications High Common-Mode Voltage – 75 V at VS = 5 V – ±200 V at VS = ±15 V Fixed Differential Gain = 1 V/V Low Quiescent Current: 260 µA Wide Supply Range – Single Supply: 2.7 V to 36 V – Dual Supplies: ±1.35 V to ±18 V Low Gain Error: 0.075% Max Low Nonlinearity: 0.
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INA148-Q1 SBOS472A – MARCH 2009 – REVISED OCTOBER 2011 www.ti.com This integrated circuit can be damaged by ESD. Texas Instruments recommends that all integrated circuits be handled with appropriate precautions. Failure to observe proper handling and installation procedures can cause damage. ESD damage can range from subtle performance degradation to complete device failure.
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INA148-Q1 SBOS472A – MARCH 2009 – REVISED OCTOBER 2011 www.ti.com ELECTRICAL CHARACTERISTICS VS = ±5 V to ±15 V (dual supply), RL = 10 kΩ to ground, VREF = 0 V, TA = 25°C (unless otherwise noted) PARAMETER TEST CONDITIONS TYP MAX VS = ±15 V ±1 ±5 VS = ±5 V ±1 ±5 VOS Input offset voltage (1) ΔVOS/ΔT Input offset voltage drift (1) TA = –40°C to 125°C ±10 PSRR Power supply ripple rejection (1) VS = ±1.
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INA148-Q1 SBOS472A – MARCH 2009 – REVISED OCTOBER 2011 www.ti.com ELECTRICAL CHARACTERISTICS VS = 5 V (single supply), RL = 10 kΩ to VS/2, VREF = VS/2, TA = 25°C (unless otherwise noted) PARAMETER TEST CONDITIONS (1) (2) VOS Input offset voltage ΔVOS/ΔT Input offset voltage drift (1) TA = –40°C to 125°C PSRR Power supply ripple rejection (1) VS = 2.7 V to 36 V, VCM = VS/2 MIN VCM = VS/2 V+IN – V–IN = 0 CMRR Common-mode rejection ratio VCM = –47.5 V to 32.5 V, RS = 0 Ω VREF = VS/2 32.
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INA148-Q1 SBOS472A – MARCH 2009 – REVISED OCTOBER 2011 www.ti.com TYPICAL CHARACTERISTICS VS = ±15 V, RL = 10 kΩ to common, VREF = 0 V, TA = 25°C (unless otherwise noted) COMMON-MODE REJECTION vs FREQUENCY GAIN vs FREQUENCY 5 100 = V S = ±15 V VS= ±1.35 V 0 = V S = ±1.
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INA148-Q1 SBOS472A – MARCH 2009 – REVISED OCTOBER 2011 www.ti.
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INA148-Q1 SBOS472A – MARCH 2009 – REVISED OCTOBER 2011 www.ti.com TYPICAL CHARACTERISTICS (continued) VS = ±15 V, RL = 10 kΩ to common, VREF = 0 V, TA = 25°C (unless otherwise noted) OFFSET VOLTAGE PRODUCTION DISTRIBUTION OFFSET VOLTAGE PRODUCTION DISTRIBUTION 24 24 VS = ±2.5 V Percent of Amplifiers (%) Percent of Amplifiers (%) VS = ±15 V 18 12 6 20 16 12 8 4 OFFSET VOLTAGE DRIFT PRODUCTION DISTRIBUTION OFFSET VOLTAGE DRIFT PRODUCTION DISTRIBUTION 20 20 VS = ±15 V VS = ±2.
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INA148-Q1 SBOS472A – MARCH 2009 – REVISED OCTOBER 2011 www.ti.
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INA148-Q1 SBOS472A – MARCH 2009 – REVISED OCTOBER 2011 www.ti.com APPLICATION INFORMATION The INA148 is a unity-gain difference amplifier with a high common-mode input voltage range. A basic diagram of the circuit and pin connections is shown in Figure 1. +VS 0.1 µF 7 V–IN 2 1 MW 50 kW 50 kW VO = (V+IN – V–IN) 2.7778 kW 6 A1 V+IN 3 1 MW VO 52.6316 kW INA148 4 0.1 µF 1 –VS Figure 1.
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INA148-Q1 SBOS472A – MARCH 2009 – REVISED OCTOBER 2011 www.ti.com Common-Mode Range The 20:1 input resistor ratio of the INA148 provides an input common-mode range that extends well beyond its power supply rails. The exact input voltage range depends on the amplifier's power-supply voltage and the voltage applied to the REF terminal (pin 1). Typical input voltage ranges at different power supply voltages can be found in the applications circuits section.
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INA148-Q1 SBOS472A – MARCH 2009 – REVISED OCTOBER 2011 www.ti.com +15 V 7 2 V–IN 1 MW 50 kW 50 kW VO = (V+IN – V–IN) 2.7778 kW 6 A1 3 V+IN VO 52.6316 kW 1 MW INA148 4 VREF 1 +15 V –15 V OPA237 100 kW 100 kW ±15-mV Offset Trim Range, RTI 100 W –15 V Figure 3. Preferred Offset Trim Circuit Input Impedance The input resistor network determines the impedance of each of the INA148 inputs. It is approximately 1 MΩ.
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INA148-Q1 SBOS472A – MARCH 2009 – REVISED OCTOBER 2011 www.ti.com Source impedances (or shunts) greater than 5 kΩ are not recommended, even if they are "perfectly" compensated. This is because the internal resistor network is laser-trimmed for accurate voltage divider ratios, but not necessarily to absolute values. Input resistors are shown as 1 MΩ, however, this is only their nominal value. In practice, the input resistors' absolute values may vary by as much as 30%.
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INA148-Q1 SBOS472A – MARCH 2009 – REVISED OCTOBER 2011 www.ti.com +5 V 0.1 µF 7 2 V–IN 1 MW 50 kW 50 kW VO = (V+IN – V –IN) + 1.235V 2.7778 kW 6 VCM = –23 V to +56 V 3 V+IN VO A1 52.6316 kW 1 MW INA148 4 1 34 kW 5W +5 V 10 µF + REF1004-1.2 Figure 7. Single-Supply Differential Amplifier IC RS 0.01 W + 0.1 µF – 28-V Supply 7 2 1 MW 50 kW 50 kW 2.7778 kW VO = 1.235 V + (IC × RS) 6 A1 3 VO 52.6316 kW 1 MW 271 kW INA148 4 1 10 µF 5W + REF1004-1.2 Figure 8.
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INA148-Q1 SBOS472A – MARCH 2009 – REVISED OCTOBER 2011 www.ti.com 0.47 µF ceramic (all) RS 50 mV shunt I 6 +15 +VISO +VS IN5245 VCM = –200V max 5 1 kW 200 kW 0.1 µF +VISO 2 3 O 7 –VISO 2 –15 DCP011515D 7 OPA277 C IN5245 +15 V +15 V 1 6 4 7 2 1 MW 50 kW 50k W –VISO 2.7778 kW 6 VO A1 –50-mV Input = –10-V Output 3 52.6316 kW 1 MW INA148 4 0.1 µF 1 –15 V Figure 9.
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PACKAGE OPTION ADDENDUM www.ti.com 27-Jul-2013 PACKAGING INFORMATION Orderable Device Status (1) INA148QDRQ1 Package Type Package Pins Package Drawing Qty ACTIVE SOIC D 8 2500 Eco Plan Lead/Ball Finish (2) Green (RoHS & no Sb/Br) MSL Peak Temp Op Temp (°C) Device Marking (3) CU NIPDAU Level-3-260C-168 HR (4/5) -40 to 125 148Q1 (1) The marketing status values are defined as follows: ACTIVE: Product device recommended for new designs.
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PACKAGE OPTION ADDENDUM www.ti.
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PACKAGE MATERIALS INFORMATION www.ti.com 26-Jan-2013 TAPE AND REEL INFORMATION *All dimensions are nominal Device INA148QDRQ1 Package Package Pins Type Drawing SOIC D 8 SPQ Reel Reel A0 Diameter Width (mm) (mm) W1 (mm) 2500 330.0 12.4 Pack Materials-Page 1 6.4 B0 (mm) K0 (mm) P1 (mm) 5.2 2.1 8.0 W Pin1 (mm) Quadrant 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) INA148QDRQ1 SOIC D 8 2500 367.0 367.0 35.
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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.