Quad, 36-V, 1-MHz, RRI operational amplifier

OPA137 series FET- input operational amplifiers

are designed for low cost and miniature

applications. In addition to small size (SOT-23-5

and MSOP-8 packages), amplifiers provide low input

bias current (±10pA), low quiescent current

(120µA/ channel), and high open-loop gain

(145dB).

Either single (+4.5V to +36V) or dual (±2.25V to

±18V) supplies can be used. The input common-mode

voltage range includes the positive supply an

excellent choice for many single-supply

applications. Single, dual, and quad versions have

identical specifications for maximum design

flexibility.

OPA137 op amps are easy to use and free from

phase inversion and overload problems found in

some FET- input amplifiers. High performance,

including linearity, is maintained as the

amplifiers swing to the specified limits. In

addition, the combination of high slew rate

(4.5V/µs) and wide bandwidth (1.1MHz) provide fast

settling time verifies good dynamic response. Dual

and quad designs feature completely independent

circuitry for lowest crosstalk and freedom from

interaction.

The single (OPA137) packages are the tiny 5-lead

SOT-23-5 surface mount, SO-8 surface mount, and

8-pin DIP. The dual (OPA2137) comes in the

miniature MSOP-8 surface mount, and the SO-8

surface mount. The quad (OPA4137) packages are the

SO-14 surface mount and the 14-pin DIP. All are

specified from – 40°C to +85°C and operate from –

55°C to +125°C. A SPICE macro-model is available

for design analysis.