®
OPA
349
OPA
349
OPA349
OPA2349
OPA
234
9
For most current data sheet and other product
information, visit www.burr-brown.com
1
µ
A, Rail-to-Rail, CMOS
OPERATIONAL AMPLIFIERS
FEATURES
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LOW SUPPLY CURRENT: 1µA
GAIN-BANDWIDTH: 70kHz
UNITY GAIN STABLE
LOW INPUT BIAS CURRENT: 10pA
WIDE SUPPLY RANGE: 1.8V to 5.5V
INPUT RANGE 200mV BEYOND RAILS
OUTPUT SWINGS TO 150mV OF RAILS
OUTPUT DRIVE CURRENT: 20mA
OPEN-LOOP GAIN: 90dB
SOT23
Micro
PACKAGES
DESCRIPTION
The OPA349 and OPA2349 are ultra-low power op-
erational amplifiers that provide 70kHz bandwidth
with only 1µA quiescent current. These rail-to-rail
input and output amplifiers are specifically designed
for battery powered applications. Unlike some
micropower op amps, these parts are unity-gain stable
and require no external compensation. The OPA349’s
low input bias current allows the use of large source
and feedback resistors. The input common-mode volt-
age range extends 200mV beyond the power supply
rails and the output swings to within 150mV of the
rails, maintaining wide dynamic range.
OPA349 can be operated with power supplies from
1.8V to 5.5V with little change in performance, guar-
anteeing continuing superior performance even in low
battery situations.
OPA349 comes in the miniature SOT23-5, SO-8 sur-
face mount and PDIP-8
(1)
packages. OPA2349 dual is
also available in the SOT23 (8-lead SOT23-8), as well
as the SO-8 surface mount packages. These tiny pack-
ages are ideal for use in high-density applications,
such as PCMCIA cards, battery packs and portable
instruments.
All models are specified for the commercial tempera-
ture range, 0°C to +70°C.
APPLICATIONS
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BATTERY PACKS AND POWER SUPPLIES
PORTABLE PHONES/PAGERS/CAMERAS
SOLAR-POWERED SYSTEMS
SMOKE/GAS/FIRE DETECTION SYSTEMS
REMOTE SENSORS
PCMCIA CARDS
DRIVING A/D CONVERTERS
Micro
POWER FILTERS
OPA349
Out
V–
+In
1
2
3
SOT23-5
4
–In
5
V+
NC
–In
+In
V–
1
2
3
4
OPA349
8
7
6
5
SO-8, PDIP-8
(1)
NOTE: (1) Available Q4 2000.
NC
V+
Out
NC
OPA2349
Out A
–In A
+In A
V–
1
2
3
4
SOT23-8, SO-8
8
7
6
5
V+
Out B
–In B
+In B
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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
© 2000 Burr-Brown Corporation
PDS-1568A
Printed in U.S.A. June, 2000
BURR-BROWN [ BURR-BROWN CORPORATION ]
