描述 Description

The OPA337 and OPA338 series rail-to-rail output CMOS operational amplifiers are designed for low cost and miniature applications. Packaged in the SOT23-8, the OPA2337EA and OPA2338EA are Texas Instruments? smallest dual op amps. At 1/4 the size of a conventional SO-8 surface-mount, they are ideal for space-sensitive applications.

Utilizing advanced CMOS technology, the OPA337 and OPA338 op amps provide low bias current, high-speed operation, high open-loop gain, and rail-to-rail output swing. They operate on a single supply with operation as low as 2.5V while drawing only 525μA quiescent current. In addition, the input common-mode voltage range includes ground?ideal for single-supply operation.

The OPA337 series is unity-gain stable. The OPA338 series is optimized for gains greater than or equal to 5. They are easy-to-use and free from phase inversion and overload problems found in some other op amps. Excellent performance is maintained as the amplifiers swing to their specified limits. The dual versions feature completely independent circuitry for lowest crosstalk and freedom from interaction, even when overdriven or overloaded.

特性 Features

? MicroSIZE PACKAGES:
? SOT-23-5, SOT23-8

? SINGLE-SUPPLY OPERATION
? RAIL-TO-RAIL OUTPUT SWING
? FET-INPUT: IB = 10pA max
? HIGH SPEED:
? OPA337: 3MHz, 1.2V/μs (G = 1)
? OPA338: 12.5MHz, 4.6V/μs (G = 5)

? OPERATION FROM 2.5V to 5.5V
? HIGH OPEN-LOOP GAIN: 120dB
? LOW QUIESCENT CURRENT: 525μA/amp
? SINGLE AND DUAL VERSIONS
? APPLICATIONS
? BATTERY-POWERED INSTRUMENTS
? PHOTODIODE PRE-AMPS
? MEDICAL INSTRUMENTS
? TEST EQUIPMENT
? AUDIO SYSTEMS
? DRIVING ADCs
? CONSUMER PRODUCTS

SPICE model available at www.ti.com.