OPA227 Datasheet, PDF (1/25 Pages) Burr-Brown (TI) – High Precision, Low Noise OPERATIONAL AMPLIFIERS

OPA4227
OPA227
OPA4227
OPA2227
OPA227
OPA2227
OPA227
OPA2227
OPA4227
OPA228
OPA2228
OPA4228
SBOS110A – MAY 1998 – REVISED JANUARY 2005
High Precision, Low Noise
OPERATIONAL AMPLIFIERS
FEATURES
DESCRIPTION
q LOW NOISE: 3nV/√Hz
q WIDE BANDWIDTH:
OPA227: 8MHz, 2.3V/µs
OPA228: 33MHz, 10V/µs
q SETTLING TIME: 5µs
(significant improvement over OP-27)
q HIGH CMRR: 138dB
q HIGH OPEN-LOOP GAIN: 160dB
q LOW INPUT BIAS CURRENT: 10nA max
q LOW OFFSET VOLTAGE: 75µV max
q WIDE SUPPLY RANGE: ±2.5V to ±18V
q OPA227 REPLACES OP-27, LT1007, MAX427
q OPA228 REPLACES OP-37, LT1037, MAX437
q SINGLE, DUAL, AND QUAD VERSIONS
APPLICATIONS
q DATA ACQUISITION
q TELECOM EQUIPMENT
q GEOPHYSICAL ANALYSIS
q VIBRATION ANALYSIS
q SPECTRAL ANALYSIS
q PROFESSIONAL AUDIO EQUIPMENT
q ACTIVE FILTERS
q POWER SUPPLY CONTROL
The OPA227 and OPA228 series op amps combine low
noise and wide bandwidth with high precision to make them
the ideal choice for applications requiring both ac and preci-
sion dc performance.
The OPA227 is unity-gain stable and features high slew rate
(2.3V/µs) and wide bandwidth (8MHz). The OPA228 is opti-
mized for closed-loop gains of 5 or greater, and offers higher
speed with a slew rate of 10V/µs and a bandwidth of 33MHz.
The OPA227 and OPA228 series op amps are ideal for
professional audio equipment. In addition, low quiescent
current and low cost make them ideal for portable applica-
tions requiring high precision.
The OPA227 and OPA228 series op amps are pin-for-pin
replacements for the industry standard OP-27 and OP-37
with substantial improvements across the board. The dual
and quad versions are available for space savings and per-
channel cost reduction.
The OPA227, OPA228, OPA2227, and OPA2228 are
available in DIP-8 and SO-8 packages. The OPA4227 and
OPA4228 are available in DIP-14 and SO-14 packages
with standard pin configurations. Operation is specified
from –40°C to +85°C.
Out A 1
OPA4227, OPA4228
14 Out D
SPICE model available for OPA227 at www.ti.com
OPA227, OPA228
Trim 1
–In 2
+In 3
V– 4
8 Trim
7 V+
6 Output
5 NC
DIP-8, SO-8
NC = Not Connected
OPA2227, OPA2228
Out A 1
–In A 2
+In A 3
V– 4
A
B
8 V+
7 Out B
6 –In B
5 +In B
DIP-8, SO-8
–In A 2
+In A 3
V+ 4
+In B 5
–In B 6
Out B 7
A
D
B
C
DIP-14, SO-14
13 –In D
12 +In D
11 V–
10 +In C
9 –In C
8 Out C
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.
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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