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OPA734, OPA2734 OPA735, OPA2735
SBOS282B − DECEMBER 2003 − REVISED FEBRUARY 2005
0.05µV/°C max, SINGLE-SUPPLY CMOS OPERATIONAL AMPLIFIERS Zer∅-Drift Series
FEATURES
D D D D D D D D
LOW OFFSET VOLTAGE: 5µV (max) ZERO DRIFT: 0.05µV/°C max QUIESCENT CURRENT: 750µA (max) SINGLE-SUPPLY OPERATION LOW BIAS CURRENT: 200pA (max) SHUTDOWN MicroSIZE PACKAGES WIDE SUPPLY RANGE: 2.7V to 12V
DESCRIPTION
The OPA734 and OPA735 series of CMOS operational amplifiers use auto-zeroing techniques to simultaneously provide low offset voltage (5µV max) and near-zero drift over time and temperature. These miniature, high-precision, low quiescent current amplifiers offer high input impedance and rail-to-rail output swing within 50mV of the rails. Either single or bipolar supplies can be used in the range of +2.7V to +12V (±1.35V to ±6V). They are optimized for low-voltage, single-supply operation. The OPA734 family includes a shutdown mode. Under logic control, the amplifiers can be switched from normal operation to a standby current that is 9µA (max) and the output placed in a high-impedance state. The single version is available in the MicroSIZE SOT23-5 (SOT23-6 for shutdown version) and the SO-8 packages. The dual version is available in the MSOP-8 and SO-8 packages (MSOP-10 only for the shutdown version). All versions are specified for operation from −40°C to +85°C.
R3 RG C1 1nF
1/2 OP A2735
APPLICATIONS
D D D D D D
TRANSDUCER APPLICATIONS TEMPERATURE MEASUREMENTS ELECTRONIC SCALES MEDICAL INSTRUMENTATION BATTERY-POWERED INSTRUMENTS HANDHELD TEST EQUIPMENT
VREF = 15V REF102 10V R1 1kΩ
G=1+2
R3 10kΩ C4 1nF C2 10nF C4 1nF R3 10kΩ
RG
R2 1kΩ C3 1nF
1/2 OP A2735
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PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters.
Copyright 2003-2005, Texas Instruments Incorporated
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OPA734, OPA2734 OPA735, OPA2735
www.ti.com SBOS282B − DECEMBER 2003 − REVISED FEBRUARY 2005
ABSOLUTE MAXIMUM RATINGS(1)
Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +13.2V Signal Input Terminals, Voltage(2) . . . . . . . . . . . (V−) − 0.5V to (V+) + 0.5V Current(2) . . . . . . . . . . . . . . . . . . . . . . . . . . . ±10mA Output Short Circuit(3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Continuous Operating Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . −40°C to +150°C Storage Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −65°C to +150°C Junction Temperature . . . . . . . . . . . . . .
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