®
OPA4227
OPA227
OPA2227
OPA4227
OPA227
OPA2227
O
P
A4227
O
P
A
2
O
P
A
2
2
7
2
2
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
DESCRIPTION
● LOW NOISE: 3nV/√Hz
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.
● WIDE BANDWIDTH:
OPA227: 8MHz, 2.3V/µs
OPA228: 33MHz, 10V/µs
● SETTLING TIME: 5µs
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.
(significant improvement over OP-27)
● HIGH CMRR: 138dB
● HIGH OPEN-LOOP GAIN: 160dB
● LOW INPUT BIAS CURRENT: 10nA max
● LOW OFFSET VOLTAGE: 75µV max
● WIDE SUPPLY RANGE: ±2.5V to ±18V
● OPA227 REPLACES OP-27, LT1007, MAX427
● OPA228 REPLACES OP-37, LT1037, MAX437
● SINGLE, DUAL, AND QUAD VERSIONS
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.
APPLICATIONS
● DATA ACQUISITION
● TELECOM EQUIPMENT
● GEOPHYSICAL ANALYSIS
● VIBRATION ANALYSIS
● SPECTRAL ANALYSIS
● PROFESSIONAL AUDIO EQUIPMENT
● ACTIVE FILTERS
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
● POWER SUPPLY CONTROL
Out A
–In A
+In A
V+
1
2
3
4
5
6
7
14 Out D
13 –In D
12 +In D
11 V–
SPICE Model available for OPA227 at www.burr-brown.com
OPA227, OPA228
A
D
C
Trim
–In
+In
V–
1
2
3
4
8
7
6
5
Trim
V+
OPA2227, OPA2228
+In B
–In B
Out B
10 +In C
Out A
–In A
+In A
V–
1
2
3
4
8
7
6
5
V+
B
Output
NC
9
8
–In C
Out C
A
Out B
–In B
+In B
B
DIP-8, SO-8
DIP-14, SO-14
DIP-8, SO-8
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