Datasheet

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

FEATURES

DESCRIPTION

APPLICATIONS

SUPPORTS DEFENSE, AEROSPACE,

INA159-EP

www.ti.com

.......................................................................................................................................................................................... SBOS443 – NOVEMBER 2008

PRECISION, GAIN OF 0.2 LEVEL

TRANSLATION DIFFERENCE AMPLIFIER

• Gain of 0.2 to Interface ± 10-V Signals to

Single-Supply ADCs

The INA159 is a high slew rate, G = 1/5 difference

amplifier consisting of a precision op amp with a

• Gain Accuracy: ± 0.024% (max)

precision resistor network. The gain of 1/5 makes the

• Wide Bandwidth: 1.5 MHz

INA159 useful to couple ± 10-V signals to

• High Slew Rate: 15 V/ µ s

single-supply analog-to-digital converters (ADCs),

• Low Offset Voltage: ± 100 µ V particularly those operating on a single +5-V supply.

The on-chip resistors are laser-trimmed for accurate

• Low Offset Drift: ± 1.5 µ V/ ° C

gain and high common-mode rejection. Excellent

• Single-Supply Operation Down to 1.8 V

temperature coefficient of resistance (TCR) tracking

of the resistors maintains gain accuracy and

common-mode rejection over temperature. The input

common-mode voltage range extends beyond the

• Industrial Process Controls

positive and negative supply rails. It operates on a

• Instrumentation

total of 1.8-V to 5.5-V single or split supplies. The

• Differential to Single-Ended Conversion

INA159 reference input uses two resistors for easy

• Audio Line Receivers

mid-supply or reference biasing.

The difference amplifier is the foundation of many

commonly-used circuits. The INA159 provides this

AND MEDICAL APPLICATIONS

circuit function without using an expensive external

• Controlled Baseline

precision resistor network. The INA159 is available in

• One Assembly/Test Site

an MSOP-8 surface-mount package and is specified

for operation over the extended industrial temperature

• One Fabrication Site

range, – 55 ° C to 125 ° C.

• Available in Military ( – 55 ° C/125 ° C)

Temperature Range

(1)

• Extended Product Life Cycle

• Extended Product-Change Notification

• Product Traceability

(1) Additional temperature ranges are available - contact factory

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.

2 All trademarks are the property of their respective owners.

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 (18 pages)

PAGE 1
INA159-EP www.ti.com .......................................................................................................................................................................................... SBOS443 – NOVEMBER 2008 PRECISION, GAIN OF 0.2 LEVEL TRANSLATION DIFFERENCE AMPLIFIER FEATURES 1 • Gain of 0.2 to Interface ±10-V Signals to Single-Supply ADCs • Gain Accuracy: ±0.024% (max) • Wide Bandwidth: 1.5 MHz • High Slew Rate: 15 V/µs • Low Offset Voltage: ±100 µV • Low Offset Drift: ±1.
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INA159-EP SBOS443 – NOVEMBER 2008 .......................................................................................................................................................................................... www.ti.com VREF 5V V+ −IN 100kΩ 20kΩ SENSE REF R1 100Ω DOUT +IN C1 1000pF VIN +IN 100kΩ 40kΩ V+ ADS8325 ADC −IN CS REF 2 40kΩ DCLOCK GND REF 1 INA159 Figure 1. Typical Application This integrated circuit can be damaged by ESD.
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INA159-EP www.ti.com .......................................................................................................................................................................................... SBOS443 – NOVEMBER 2008 ABSOLUTE MAXIMUM RATINGS (1) over operating free-air temperature range (unless otherwise noted) MIN Supply voltage Signal input terminals (−IN and +IN), voltage Reference (REF 1 and REF2) and sense pins Current Voltage (V–) – 0.5 Output short circuit UNIT +5.
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INA159-EP SBOS443 – NOVEMBER 2008 .......................................................................................................................................................................................... www.ti.com ELECTRICAL CHARACTERISTICS Boldface limits apply over the specified temperature range, TA = –55°C to +125°C. At TA = +25°C, RL = 10 kΩ connected to VS/2, REF pin 1 connected to ground, and REF pin 2 connected to VREF = 5 V, unless otherwise noted.
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INA159-EP www.ti.com .......................................................................................................................................................................................... SBOS443 – NOVEMBER 2008 ELECTRICAL CHARACTERISTICS (continued) Boldface limits apply over the specified temperature range, TA = –55°C to +125°C. At TA = +25°C, RL = 10 kΩ connected to VS/2, REF pin 1 connected to ground, and REF pin 2 connected to VREF = 5 V, unless otherwise noted.
PAGE 6
INA159-EP SBOS443 – NOVEMBER 2008 .......................................................................................................................................................................................... www.ti.com TYPICAL CHARACTERISTICS At TA = +25°C, RL = 10 kΩ connected to VS/2, REF pin 1 connected to ground, and REF pin 2 connected to VREF = 5 V, unless otherwise noted.
PAGE 7
INA159-EP www.ti.com .......................................................................................................................................................................................... SBOS443 – NOVEMBER 2008 TYPICAL CHARACTERISTICS (continued) At TA = +25°C, RL = 10 kΩ connected to VS/2, REF pin 1 connected to ground, and REF pin 2 connected to VREF = 5 V, unless otherwise noted. SHORT−CIRCUIT CURRENT vs TEMPERATURE 120 OUTPUT VOLTAGE SWING vs OUTPUT CURRENT 3.0 VS = ±2.
PAGE 8
INA159-EP SBOS443 – NOVEMBER 2008 .......................................................................................................................................................................................... www.ti.com TYPICAL CHARACTERISTICS (continued) At TA = +25°C, RL = 10 kΩ connected to VS/2, REF pin 1 connected to ground, and REF pin 2 connected to VREF = 5 V, unless otherwise noted.
PAGE 9
INA159-EP www.ti.com .......................................................................................................................................................................................... SBOS443 – NOVEMBER 2008 APPLICATION INFORMATION The internal op amp of the INA159 has a rail-to-rail common-mode voltage capability at its inputs. A rail-to-rail op amp allows the use of ±10-V inputs into a circuit biased to 1/2 of a 5-V reference (2.5-V quiescent output).
PAGE 10
INA159-EP SBOS443 – NOVEMBER 2008 .......................................................................................................................................................................................... www.ti.com Input and Output Relationships for Various Reference and Connection Combinations VREF (V) REF CONNECTION VOUT for VIN = 0 (V) LINEAR VIN RANGE (V) USEFUL VOUT SWING (V) 2.5 +10 0 –10 4.5 (±2V swing) 0.5 2.048 10 0 –10 4.048 (±2V swing) 0.048 1.65 +10 0 –7.885 3.
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INA159-EP www.ti.com .......................................................................................................................................................................................... SBOS443 – NOVEMBER 2008 VREF 5V V+ −IN 100kΩ 20kΩ SENSE REF R1 100Ω DOUT +IN C1 1000pF VIN +IN 100kΩ 40kΩ 40kΩ V+ −IN ADS8325 ADC DCLOCK CS REF 2 GND REF 1 INA159 Figure 3.
PAGE 12
INA159-EP SBOS443 – NOVEMBER 2008 .......................................................................................................................................................................................... www.ti.com VREF 5V V+ −IN 100kΩ 20kΩ SENSE VIN +IN V+ REF R1 100Ω 100kΩ 40kΩ 40kΩ +IN C1 1000pF ADC −IN REF 2 GND REF 1 INA159 a) Unipolar, Noninverting, G = 0.
PAGE 13
INA159-EP www.ti.com .......................................................................................................................................................................................... SBOS443 – NOVEMBER 2008 5V V+ VIN− −IN A 100kΩ 20kΩ SENSE A OUT A 100Ω 1000pF VIN+ +IN A 100kΩ 40kΩ 40kΩ REF 2A REF 1A INA159 VREF V+ −IN B 100kΩ 20kΩ REF SENSE B OUT B V+ +IN 100Ω −IN 5V ADC 1000pF GND +IN B 100kΩ 40kΩ 40kΩ REF 2B REF 1B INA159 Figure 6.
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PACKAGE OPTION ADDENDUM www.ti.
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PACKAGE OPTION ADDENDUM www.ti.
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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.