OPA335AIDR Electronic IC Chips SINGLE-SUPPLY CMOS OPERATIONAL AMPLIFIERS

OPA334 OPA2334 OPA335 OPA2335

0.05µV/°C max, SINGLE-SUPPLY CMOS OPERATIONAL AMPLIFIERS Zerø-Drift Series

FEATURES

● LOW OFFSET VOLTAGE: 5µV (max)

● ZERO DRIFT: 0.05µV/°C (max)

● QUIESCENT CURRENT: 285µA

● SINGLE-SUPPLY OPERATION

● SINGLE AND DUAL VERSIONS

● SHUTDOWN

● MicroSIZE PACKAGES

APPLICATIONS

● TRANSDUCER APPLICATIONS

● TEMPERATURE MEASUREMENT

● ELECTRONIC SCALES

● MEDICAL INSTRUMENTATION

● BATTERY-POWERED INSTRUMENTS

● HANDHELD TEST EQUIPMENT

DESCRIPTION

The OPA334 and OPA335 series of CMOS operational amplifiers use auto-zeroing techniques to simultaneously provide very 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. Single or dual supplies as low as +2.7V (±1.35V) and up to +5.5V (±2.75V) may be used. These op amps are optimized for low-voltage, single-supply operation.

The OPA334 family includes a shutdown mode. Under logic control, the amplifiers can be switched from normal operation to a standby current of 2µA. When the Enable pin is connected high, the amplifier is active. Connecting Enable low disables the amplifier, and places the output in a highimpedance state.

The OPA334 (single version with shutdown) comes in MicroSIZE SOT23-6. The OPA335 (single version without shutdown) is available in SOT23-5, and SO-8. The OPA2334 (dual version with shutdown) comes in MicroSIZE MSOP-10. The OPA2335 (dual version without shutdown) is offered in the MSOP-8 and SO-8 packages. All versions are specified for operation from –40°C to +125°C.

ABSOLUTE MAXIMUM RATINGS⁽¹⁾

Supply Voltage .................................................................................... +7V

Signal Input Terminals, Voltage⁽²⁾ ........................... –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 .................................................................... +150°C

Lead Temperature (soldering, 10s) ............................................... +300°C

NOTES:

(1) Stresses above these ratings may cause permanent damage. Exposure to absolute maximum conditions for extended periods may degrade device reliability. These are stress ratings only, and functional operation of the device at these, or any other conditions beyond those specified, is not implied.

(2) Input terminals are diode-clamped to the power-supply rails. Input signals that can swing more than 0.5V beyond the supply rails should be current-limited to 10mA or less.

(3) Short-circuit to ground, one amplifier per package.

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