®
OPA
227
OPA
422
7
OPA
22 2
OPA227
7
OPA
422
7
OPA
2
OPA2227
OPA4227
27
OPA
222
7
OPA228
OPA2228
OPA4228
For most current data sheet and other product
information, visit www.burr-brown.com
High Precision, Low Noise
OPERATIONAL AMPLIFIERS
FEATURES
q
LOW NOISE: 3nV/√Hz
q
WIDE BANDWIDTH:
OPA227: 8MHz, 2.3V/
µ
s
OPA228: 33MHz, 10V/
µ
s
q
SETTLING TIME: 5
µ
s
(significant improvement over OP-27)
q
q
q
q
q
q
HIGH CMRR: 138dB
HIGH OPEN-LOOP GAIN: 160dB
LOW INPUT BIAS CURRENT: 10nA max
LOW OFFSET VOLTAGE: 75
µ
V max
WIDE SUPPLY RANGE:
±
2.5V to
±
18V
OPA227 REPLACES OP-27, LT1007, MAX427
DESCRIPTION
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 precision dc performance.
The OPA227 is unity gain stable and features high
slew rate (2.3V/µs) and wide bandwidth (8MHz). The
OPA228 is optimized 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 applications 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 configura-
tions. Operation is specified from –40°C to +85°C.
OPA4227, OPA4228
Out A
–In A
+In A
1
2
A
3
4
5
B
–In B
Out B
6
7
DIP-14, SO-14
C
9
8
–In C
Out C
D
12
11
10
+In D
V–
+In C
14
13
Out D
–In D
q
OPA228 REPLACES OP-37, LT1037, MAX437
q
SINGLE, DUAL, AND QUAD VERSIONS
APPLICATIONS
q
q
q
q
q
q
q
DATA ACQUISITION
TELECOM EQUIPMENT
GEOPHYSICAL ANALYSIS
VIBRATION ANALYSIS
SPECTRAL ANALYSIS
PROFESSIONAL AUDIO EQUIPMENT
ACTIVE FILTERS
q
POWER SUPPLY CONTROL
SPICE Model available for OPA227 at www.burr-brown.com
OPA227, OPA228
Trim
–In
+In
V–
1
2
3
4
DIP-8, SO-8
8
7
6
5
Trim
V+
Output
NC
Out A
–In A
+In A
V–
1
2
3
4
DIP-8, SO-8
A
B
8
7
6
5
V+
Out B
–In B
+In B
OPA2227, OPA2228
V+
+In B
International Airport Industrial Park • Mailing Address: PO Box 11400, Tucson, AZ 85734 • Street Address: 6730 S. Tucson Blvd., Tucson, AZ 85706 • Tel: (520) 746-1111
Twx: 910-952-1111 • Internet: http://www.burr-brown.com/ • Cable: BBRCORP • Telex: 066-6491 • FAX: (520) 889-1510 • Immediate Product Info: (800) 548-6132
© 1998 Burr-Brown Corporation
PDS-1494B
Printed in U.S.A. May, 1999
BURR-BROWN [ BURR-BROWN CORPORATION ]
