OPA344
OPA
434
4
OPA
344
OPA
345
OPA2344
OPA4344
OPA345
OPA
342
®
OPA2345
OPA4345
SBOS107A – APRIL 2000 – REVISED AUGUST 2008
www.ti.com
LOW POWER, SINGLE-SUPPLY, RAIL-TO-RAIL
OPERATIONAL AMPLIFIERS
Micro
Amplifier
™
Series
FEATURES
q
q
q
q
RAIL-TO-RAIL INPUT
RAIL-TO-RAIL OUTPUT (within 1mV)
LOW QUIESCENT CURRENT: 150
µ
A typ
Micro
SIZE PACKAGES
SOT23-5
MSOP-8
TSSOP-14
q
GAIN-BANDWIDTH
OPA344: 1MHz, G
≥
1
OPA345: 3MHz, G
≥
5
q
SLEW RATE
OPA344: 0.8V/
µ
s
OPA345: 2V/
µ
s
q
THD + NOISE: 0.006%
DESCRIPTION
The OPA344 and OPA345 series rail-to-rail CMOS
operational amplifiers are designed for precision, low-power,
miniature applications. The OPA344 is unity gain stable,
while the OPA345 is optimized for gains greater than or equal
to five, and has a gain-bandwidth product of 3MHz.
The OPA344 and OPA345 are optimized to operate on a
single supply from 2.5V and up to 5.5V with an input
common-mode voltage range that extends 300mV
beyond the supplies. Quiescent current is only
250µA (max).
Rail-to-rail input and output make them ideal for driving
sampling analog-to-digital converters. They are also well suited
for general purpose and audio applications and providing I/V
conversion at the output of D/A converters. Single, dual and
quad versions have identical specs for design flexibility.
A variety of packages are available. All are specified for
operation from –40ºC to 85ºC. A SPICE macromodel for
design analysis is available for download from www.ti.com.
OPA344, OPA345
Out
V–
+In
1
2
3
SOT23-5
4
–In
5
V+
APPLICATIONS
q
q
q
q
q
q
q
PCMCIA CARDS
DATA ACQUISITION
PROCESS CONTROL
AUDIO PROCESSING
COMMUNICATIONS
ACTIVE FILTERS
TEST EQUIPMENT
OPA2344, OPA2345
Out A
–In A
+In A
V–
1
2
3
4
A
B
8
7
6
5
V+
Out B
–In B
+In B
NC
–In
+In
V–
1
2
3
4
OPA4344, OPA4345
Out A
–In A
1
2
A
+In A
3
4
5
B
C
9
8
–In C
Out C
6
7
D
12
11
10
+In D
–V
+In C
14
13
Out D
–In D
OPA344, OPA345
8
7
6
5
NC
V+
Out
NC
+V
+In B
–In B
Out B
SO-8, MSOP-8, 8-Pin DIP (OPA2344 Only)
SO-8, 8-Pin DIP (OPA344 Only)
TSSOP-14, SO-14, 14-PIn DIP (OPA4344 Only)
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.
All trademarks are the property of their respective owners.
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.
Copyright © 2000-2008, Texas Instruments Incorporated
www.ti.com
TI [ TEXAS INSTRUMENTS ]
