OPA343
OPA2343
OPA4343
OPA2343
OPA4343
®
OPA4343
www.ti.com
SINGLE-SUPPLY, RAIL-TO-RAIL
OPERATIONAL AMPLIFIERS
™
microAmplifier Series
FEATURES
APPLICATIONS
● RAIL-TO-RAIL INPUT/OUTPUT
● DRIVING A/D CONVERTERS
● MICRO SIZE PACKAGES
● PCMCIA CARDS
● WIDE BANDWIDTH: 5.5MHz
● HIGH SLEW RATE: 6V/µs
● LOW THD+NOISE: 0.0007% (f = 1kHz)
● LOW QUIESCENT CURRENT: 850µA/chan
● SINGLE, DUAL, AND QUAD VERSIONS
● DATA ACQUISITION
● AUDIO PROCESSING
● COMMUNICATIONS
● ACTIVE FILTERS
● TEST EQUIPMENT
The OPA343 series operates on a single supply as low as
2.5V, and input common-mode voltage range extends
500mV beyond the supply rails. Output voltage swings to
within 1mV of the supply rails with a 100kΩ load. They
offer excellent dynamic response (BW = 5.5MHz,
SR = 6V/µs), yet quiescent current is only 850µA. Dual
and quad designs feature completely independent circuitry
for lowest crosstalk and freedom from interaction.
DESCRIPTION
OPA343 series rail-to-rail CMOS operational amplifiers
are designed for low-cost, miniature applications. They
are optimized for low-voltage, single-supply operation.
Rail-to-rail input/output and high-speed operation make
them ideal for driving sampling Analog-to-Digital (A/D)
converters. They are also well suited for general-purpose
and audio applications as well as providing I/V conver-
sion at the output of Digital-to-Analog (D/A) converters.
Single, dual, and quad versions have identical specifica-
tions for design flexibility.
The single (OPA343) packages are the tiny SOT-23-5
surface mount and SO-8 surface mount. The dual
(OPA2343) comes in the miniature MSOP-8 surface
mount and SO-8 surface mount. The quad (OPA4343)
packages are the space-saving SSOP-16 surface mount,
SO-14 surface mount, and TSSOP-14 surface mount. All
are specified from –40°C to +85°C and operate from
–55°C to +125°C. A SPICE macromodel is available for
design analysis.
OPA343
OPA343
NC
NC
–In
+In
V–
1
2
3
4
8
7
6
5
Out
V–
1
2
3
5
4
V+
V+
Output
NC
+In
–In
OPA4343
OPA4343
SOT-23-5
Out A
–In A
+In A
+V
1
2
3
4
5
6
7
8
16 Out D
15 –In D
14 +In D
13 –V
SO-8
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–
A
B
D
C
OPA2343
A
B
D
C
Out A
–In A
+In A
V–
1
8
V+
A
+In B
–In B
Out B
NC
12 +In C
11 –In C
10 Out C
2
3
4
7
6
5
Out B
–In B
+In B
B
+In B
–In B
Out B
10 +In C
9
8
–In C
9
NC
Out C
SO-8, MSOP-8
SSOP-16
TSSOP-14
Copyright © 2000, Texas Instruments Incorporated
SBOS090A
Printed in U.S.A. October, 2000