INA157| Datasheet

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INA 157

INA157

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High-Speed, Precision DIFFERENCE AMPLIFIER
FEATURES
q DESIGNED FOR LOW COST q LOW OFFSET VOLTAGE: 500uV max q LOW OFFSET DRIFT: 2uV/ C q LOW GAIN ERROR: 0.05% max q WIDE BANDWIDTH: 3MHz q HIGH SLEW RATE: 14V/us q FAST SETTLING TIME: 3us to 0.01% q WIDE SUPPLY RANGE: 4V to 18V q LOW QUIESCENT CURRENT: 2.4mA q SO-8 SURFACE-MOUNT PACKAGE

APPLICATIONS
q DIFFERENTIAL INPUT AMPLIFIER q INSTRUMENTATION AMPLIFIER BUILDING BLOCK q G = 1/2 AMPLIFIER q G = 2 AMPLIFIER q DIFFERENTIAL CURRENT RECEIVER q VOLTAGE-CONTROLLED CURRENT SOURCE q GROUND LOOP ELIMINATOR q CURRENT SHUNT MONITOR

DESCRIPTION
V+

The INA157 is a high slew rate, G = 1/2 or G = 2 difference amplifier consisting of a precision op amp with a precision resistor network. The on-chip resistors are laser trimmed for accurate gain and high common-mode rejection. Excellent TCR tracking of the resistors maintains gain accuracy and commonmode rejection over temperature. The input commonmode voltage range extends beyond the positive and negative supply rails. It operates on 4V to 18V supplies. The difference amplifier is the foundation of many commonly used circuits. The INA157 provides this circuit function without using an expensive precision resistor network. The INA157 is available in a SO-8 surface-mount package and is specified for operation over the extended industrial temperature range, 40 C to +85 C.

7 12k 6k

Sense

Output

+In

12k

Ref

4 V

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

1999 Burr-Brown Corporation

PDS-1483B

Printed in U.S.A. March, 1999

SBOS105