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INA156

FEATURES

● RAIL-TO-RAIL OUTPUT SWING: Within 20mV

● LOW OFFSET DRIFT: ±5µV/°C

● INTERNAL FIXED GAIN = 10V/V OR 50V/V

● SPECIFIED TEMPERATURE RANGE:

–55°C to +125°C

● LOW INPUT BIAS CURRENT: 1pA

● WIDE BANDWIDTH: 550kHz in G = 10

● HIGH SLEW RATE: 6.5V/µs

● LOW COST

● TINY MSOP-8 PACKAGES

Single-Supply, Rail-to-Rail Output, CMOS

INSTRUMENTATION AMPLIFIER

DESCRIPTION

The INA156 is a low-cost CMOS instrumentation

amplifier with rail-to-rail output swing optimized for

low-voltage, single-supply operation.

Wide bandwidth (550kHz in G = 10) and high slew

rate (6.5V/µs) make the INA156 suitable for driving

sampling A/D converters as well as general purpose

and audio applications. Fast settling time allows use

with higher speed sensors and transducers, and rapid

scanning data acquisition systems.

APPLICATIONS

● INDUSTRIAL SENSOR AMPLIFIERS:

Bridge, RTD, Thermocouple, Flow, Position

● MEDICAL EQUIPMENT:

ECG, EEG, EMG Amplifiers

● DRIVING A/D CONVERTERS

● PCMCIA CARDS

● AUDIO PROCESSING

● COMMUNICATIONS

● TEST EQUIPMENT

●

LOW COST AUTOMOTIVE INSTRUMENTATION

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

For most current data sheet and other product

information, visit www.burr-brown.com

Gain can be set to 10V/V or 50V/V by pin strapping.

Gains between these two values can be obtained with

the addition of a single resistor. The INA156 is fully

specified over the supply range of +2.7V to +5.5V.

The INA156 is available in an MSOP-8 surface-mount

package specified for operation over the temperature

range –55°C to 125°C.

22.2kΩ

200kΩ

–

Ref

INA156

22.2kΩ

5kΩ5kΩ

200kΩ

V+

V–

G = 10 pins open

G = 50 pins connected

= (V

– V

) • G + V

REF

+–

INA156

SBOS119

Summary of content (15 pages)

PAGE 1
® INA156 INA 156 For most current data sheet and other product information, visit www.burr-brown.
PAGE 2
SPECIFICATIONS: VS = +2.7V to +5.5V Boldface limits apply over the specified temperature range, TA = –55°C to +125°C At TA = +25°C, RL = 10kΩ connected to VS/2. RG pins open (G = 10), and Ref = VS /2, unless otherwise noted. INA156E, A PARAMETER CONDITION INPUT Offset Voltage, RTI Over Temperature Drift vs Power Supply Over Temperature vs Time VOS dVOS/dT PSRR MIN TYP VS = +5.0V, VCM = VS/2 ±2.5 VS = +2.7V to +6V, VCM = 0.2 • VS ±5 ±50 ±0.
PAGE 3
ELECTROSTATIC DISCHARGE SENSITIVITY PIN CONFIGURATION Top View MSOP RG 1 8 RG – VIN 2 V+ 7 V+ IN 3 6 VOUT V– 4 5 Ref 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. INA156 ESD damage can range from subtle performance degradation to complete device failure.
PAGE 4
TYPICAL PERFORMANCE CURVES At TA = +25°C, VS = 5.5V, RL = 10kΩ connected to VS/2. RG pins open (G = 10), and Ref = VS /2, unless otherwise noted. GAIN vs FREQUENCY COMMON-MODE REJECTION RATIO vs FREQUENCY 40 100 35 90 30 G = 50 80 G = 50 G = 10 70 20 G =10 15 60 CMRR (dB) Gain (dB) 25 50 40 30 10 20 5 10 0 0 1 10 100 1k 10k 100k 1M 10M 0.1 1 10 100 Frequency (Hz) 100k 6 Maximum Output Voltage (Vp-p) 90 80 70 60 50 40 30 20 10 5 4 3 2 1 VS = 5.
PAGE 5
TYPICAL PERFORMANCE CURVES (Cont.) At TA = +25°C, VS = 5.5V, RL = 10kΩ connected to VS/2. RG pins open (G = 10), and Ref = VS /2, unless otherwise noted. TOTAL HARMONIC DISTORTION + NOISE vs FREQUENCY INPUT VOLTAGE AND CURRENT NOISE DENSITY vs FREQUENCY 10k 1 100 10 in 100 1 RL = 2kΩ 0.1 THD+N (%) 1k Current Noise (fA/√Hz) Voltage Noise (nV/√Hz) RL = 600Ω en G = 50 RL = 600Ω RL = 10kΩ 0.01 G = 10 RL = 2kΩ 10 0.1 10 1 100 1k 10k RL =10kΩ 0.001 0.
PAGE 6
TYPICAL PERFORMANCE CURVES (Cont.) At TA = +25°C, VS = 5.5V, RL = 10kΩ connected to VS/2. RG pins open (G = 10), and Ref = VS /2, unless otherwise noted.
PAGE 7
TYPICAL PERFORMANCE CURVES (Cont.) At TA = +25°C, VS = 5.5V, RL = 10kΩ connected to VS/2. RG pins open (G = 10), and Ref = VS /2, unless otherwise noted.
PAGE 8
APPLICATIONS INFORMATION OPERATING VOLTAGE Figure 1 shows the basic connections required for operation of the INA156. Applications with noisy or high impedance power supplies may require decoupling capacitors close to the device pins, as shown. The INA156 is fully specified and guaranteed over the supply range +2.7V to +5.5V, with key parameters guaranteed over the temperature range of –55°C to +125°C.
PAGE 9
SETTING THE GAIN INPUT BIAS CURRENT RETURN Gain of 10 is achieved simply by leaving the two gain pins (1 and 8) open. Gain of 50 is achieved by connecting the gain pins together directly. In the G = 10 configuration, the gain error is less than 0.4%. In the G = 50 configuration, the gain error is less than 0.8%. The input impedance of the INA156 is extremely high— approximately 1013Ω, making it ideal for use with high-impedance sources.
PAGE 10
INPUT COMMON-MODE RANGE 5 The input common-mode range of the INA156 for various operating conditions is shown in the Typical Performance Curves. The common-mode input range is limited by the output voltage swing of A1, an internal circuit node.
PAGE 11
PACKAGE OPTION ADDENDUM www.ti.
PAGE 12
PACKAGE OPTION ADDENDUM www.ti.com 11-Jul-2013 continues to take reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on incoming materials and chemicals. TI and TI suppliers consider certain information to be proprietary, and thus CAS numbers and other limited information may not be available for release.
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 INA156EA/250 VSSOP DGK 8 250 180.0 12.4 5.3 3.4 1.4 8.0 12.0 Q1 INA156EA/2K5 VSSOP DGK 8 2500 330.0 12.4 5.3 3.4 1.4 8.0 12.
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) INA156EA/250 VSSOP DGK INA156EA/2K5 VSSOP DGK 8 250 210.0 185.0 35.0 8 2500 367.0 367.0 35.
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.