Texas Instruments OPA227 OPA228 Series Data Handbook

OPA227

OPA4227 OPA2227 OPA227 OPA2227 OPA4227 OPA4227 OPA227 OPA2227 OPA228

OPA2228 OPA4228

SBOS110A – MAY 1998 – REVISED JANUARY 2005

High Precision, Low Noise OPERATIONAL AMPLIFIERS

FEATURES DESCRIPTION ● LOW NOISE: 3n V/√Hz The OPA227 and OPA228 series op amps combine low ● WIDE BANDWIDTH: noise and wide bandwidth with high precision to make them

OPA227: 8MHz, 2.3V/µs the ideal choice for applications requiring both ac and preci-

OPA228: 33MHz, 10V/µs sion dc performance. SETTLING TIME: 5µs The OPA227 is unity-gain stable and features high slew rate (significant improvement over OP-27)

(2.3V/µs) and wide bandwidth (8MHz). The OPA228 is opti-

● HIGH CMRR: 138d B mized for closed-loop gains of 5 or greater, and offers higher

● HIGH OPEN-LOOP GAIN: 160d B speed with a slew rate of 10V/µs and a bandwidth of 33MHz.

● LOW INPUT BIAS CURRENT: 10n A max The OPA227 and OPA228 series op amps are ideal for ● LOW OFFSET VOLTAGE: 75µV max professional audio equipment. In addition, low quiescent

● WIDE SUPPLY RANGE: ±2.5V to ±18V current and low cost make them ideal for portable applica- ● OPA227 REPLACES OP-27, LT1007, MAX427 tions requiring high precision. ● OPA228 REPLACES OP-37, LT1037, MAX437 The OPA227 and OPA228 series op amps are pin-for-pin replacements for the industry standard OP-27 and OP-37

● SINGLE, DUAL, AND QUAD VERSIONS

with substantial improvements across the board. The dual and quad versions are available for space savings and per-

APPLICATIONS

channel cost reduction.

DATA ACQUISITION

The OPA227, OPA228, OPA2227, and OPA2228 are

TELECOM EQUIPMENT available in DIP-8 and SO-8 packages. The OPA4227 and GEOPHYSICAL ANALYSIS OPA4228 are available in DIP-14 and SO-14 packages

VIBRATION ANALYSIS with standard pin configurations. Operation is specified SPECTRAL ANALYSIS from –40°C to +85°C.

PROFESSIONAL AUDIO EQUIPMENT

OPA4227, OPA4228

ACTIVE FILTERS POWER SUPPLY CONTROL

Out A Out D

SPICE model available for OPA227 at www.ti.com –In A –In D

OPA2227, OPA2228 +In A +In D

OPA227, OPA228 V+ V–

Out A V+

+In B +In C

Trim Trim –In A Out B

–In B –In C

–In V+ +In A –In B

Out B Out C

+In Output V– +In B

V– NC DIP-14, SO-14

DIP-8, SO-8

DIP-8, SO-8 NC = Not Connected

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

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PRODUCTION DATA information is current as of publication date. Copyright © 1998-2005, Texas Instruments Incorporated Products conform to specifications per the terms of Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters.

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