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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
SPECIFICATIONS: V
S
= 2.7V to 5.5V
At T
A
= +25°C, R
L
= 10kΩ connected to V
S
/2 and V
OUT
= V
S
/2, unless otherwise noted.
Boldface
limits apply over the temperature range, T
A
= –40°C to +85°C.
OPA344NA, UA, PA
OPA2344EA, UA, PA
OPA4344EA, UA, PA
PARAMETER
OFFSET VOLTAGE
Input Offset Voltage
Over Temperature
vs Temperature
vs Power Supply
Over Temperature
Channel Separation, dc
f = 1kHz
INPUT BIAS CURRENT
Input Bias Current
Over Temperature
Input Offset Current
NOISE
Input Voltage Noise
Input Voltage Noise Density
Current Noise Density
INPUT VOLTAGE RANGE
Common-Mode Voltage Range
Common-Mode Rejection Ratio
Over Temperature
Common-Mode Rejection
Over Temperature
Common-Mode Rejection
Over Temperature
INPUT IMPEDANCE
Differential
Common-Mode
OPEN-LOOP GAIN
Open-Loop Voltage Gain
Over Temperature
Over Temperature
FREQUENCY RESPONSE
Gain-Bandwidth Product
Slew Rate
Settling Time, 0.1%
0.01%
Overload Recovery Time
Total Harmonic Distortion + Noise
OUTPUT
Voltage Output Swing from Rail
(1)
Over Temperature
Over Temperature
Short-Circuit Current
Capacitive Load Drive
POWER SUPPLY
Specified Voltage Range
Operating Voltage Range
Quiescent Current (per amplifier)
Over Temperature
TEMPERATURE RANGE
Specified Range
Operating Range
Storage Range
Thermal Resistance
SOT23-5 Surface Mount
MSOP-8 Surface Mount
8-Pin DIP
SO-8 Surface Mount
TSSOP-14 Surface Mount
14-Pin DIP
SO-14 Surface Mount
GBW
SR
V
S
= 5.5V, 2V Step
V
S
= 5.5V, 2V Step
V
IN
• G = V
S
V
S
= 5.5V, V
O
= 3Vp-p, G = 1, f = 1kHz
R
L
= 100kΩ, A
OL
≥
96dB
R
L
= 100kΩ, A
OL
≥
104dB
R
L
= 100kΩ, A
OL
≥
100dB
R
L
= 5kΩ, A
OL
≥
96dB
R
L
= 5kΩ, A
OL
≥
90dB
I
SC
C
LOAD
V
S
I
Q
V
S
= 5.5V, I
O
= 0
2.7
2.5 to 5.5
150
A
OL
R
L
R
L
R
L
R
L
= 100kΩ, 10mV < V
O
< (V+) –10mV
= 100kΩ, 10mV < V
O
< (V+) –10mV
= 5kΩ, 400mV < V
O
< (V+) –400mV
= 5kΩ, 400mV < V
O
< (V+) –400mV
C
L
= 100pF
1
0.8
5
8
2.5
0.006
1
3
40
±15
See Typical Curve
5.5
250
300
85
125
150
200
150
100
150
100
80
100
MHz
V/µs
µs
µs
µs
%
mV
mV
mV
mV
mV
mA
104
100
96
90
V
OS
dV
OS
/dT
PSRR
CONDITION
V
S
= +5.5V, V
CM
= V
S
/2
MIN
TYP
±0.2
±
0.8
±
3
30
0.2
130
I
B
I
OS
f = 0.1 to 50kHz
f = 10kHz
f = 10kHz
–0.3
76
74
70
68
66
64
±0.2
±10
See Typical Curve
±0.2
±10
8
30
0.5
(V+) + 0.3
92
84
80
MAX
±1
UNITS
mV
mV
µV/°C
µV/V
µV/V
µV/V
dB
pA
pA
pA
µVrms
nV/√Hz
fA/√Hz
V
dB
dB
dB
dB
dB
dB
Ω
|| pF
Ω
|| pF
dB
dB
dB
dB
±
1.2
200
250
V
S
= 2.7V to 5.5V, V
CM
< (V+) -1.8V
V
S
= 2.7V to 5.5V, V
CM
< (V+) -1.8V
e
n
i
n
V
CM
CMRR
CMRR
CMRR
V
S
= +5.5V, –0.3V < V
CM
< (V+)-1.8
V
S
= +5.5V, –0.3V < V
CM
< (V+)-1.8
V
S
= +5.5V, –0.3V < V
CM
< 5.8V
V
S
= +5.5V, –0.3V < V
CM
< 5.8V
V
S
= +2.7V, –0.3V < V
CM
< 3V
V
S
= +2.7V, –0.3V < V
CM
< 3V
10
13
|| 3
10
13
|| 6
122
120
THD+N
10
10
400
400
V
V
µA
µA
°C
°C
°C
°C/W
°C/W
°C/W
°C/W
°C/W
°C/W
°C/W
–40
–55
–65
θ
JA
NOTE: (1) Output voltage swings are measured between the output and power-supply rails.
2
www.ti.com
OPA344, 2344, 4344
OPA345, 2345, 4345
SBOS107A
SPECIFICATIONS: V
S
= 2.7V to 5.5V
At T
A
= +25°C, R
L
= 10kΩ connected to V
S
/2 and V
OUT
= V
S
/2, unless otherwise noted.
Boldface
limits apply over the temperature range, T
A
= –40°C to +85°C.
OPA345NA, UA
OPA2345EA, UA
OPA4345EA, UA
PARAMETER
OFFSET VOLTAGE
Input Offset Voltage
Over Temperature
vs Temperature
vs Power Supply
Over Temperature
Channel Separation, dc
f = 1kHz
INPUT BIAS CURRENT
Input Bias Current
Over Temperature
Input Offset Current
NOISE
Input Voltage Noise
Input Voltage Noise Density
Current Noise Density
INPUT VOLTAGE RANGE
Common-Mode Voltage Range
Common-Mode Rejection Ratio
Over Temperature
Common-Mode Rejection Ratio
Over Temperature
Common-Mode Rejection Ratio
Over Temperature
INPUT IMPEDANCE
Differential
Common-Mode
OPEN-LOOP GAIN
Open-Loop Voltage Gain
Over Temperature
Over Temperature
FREQUENCY RESPONSE
Gain-Bandwidth Product
Slew Rate
Settling Time, 0.1%
0.01%
Overload Recovery Time
Total Harmonic Distortion + Noise
OUTPUT
Voltage Output Swing from Rail
(1)
Over Temperature
Over Temperature
Short-Circuit Current
Capacitive Load Drive
POWER SUPPLY
Specified Voltage Range
Operating Voltage Range
Quiescent Current (per amplifier)
Over Temperature
TEMPERATURE RANGE
Specified Range
Operating Range
Storage Range
Thermal Resistance
SOT23-5 Surface Mount
MSOP-8 Surface Mount
SO-8 Surface Mount
TSSOP-14 Surface Mount
SO-14 Surface Mount
GBW
SR
G = 5, 2V Output Step
G = 5, 2V Output Step
V
IN
• G = V
S
V
S
= 5.5V, V
O
= 2.5Vp-p, G = 5, f = 1kHz
R
L
= 100kΩ, A
OL
≥
96dB
R
L
= 100kΩ, A
OL
≥
104dB
R
L
= 100kΩ, A
OL
≥
100dB
R
L
= 5kΩ, A
OL
≥
96dB
R
L
= 5kΩ, A
OL
≥
90dB
I
SC
C
LOAD
V
S
I
Q
V
S
= 5.5V, I
O
= 0
2.7
2.5 to 5.5
150
A
OL
R
L
R
L
R
L
R
L
= 100kΩ, 10mV < V
O
< (V+) –10mV
= 100kΩ, 10mV < V
O
< (V+) –10mV
= 5kΩ, 400mV < V
O
< (V+) –400mV
= 5kΩ, 400mV < V
O
< (V+) –400mV
C
L
= 100pF
3
2
1.5
1.6
2.5
0.006
1
3
40
±15
See Typical Curve
5.5
250
300
85
125
150
200
150
150
100
100
MHz
V/µs
µs
µs
µs
%
mV
mV
mV
mV
mV
mA
104
100
96
90
V
OS
dV
OS
/dT
PSRR
CONDITION
V
S
= +5.5V, V
CM
= V
S
/2
MIN
TYP
±0.2
±
0.8
±
3
30
0.2
130
I
B
I
OS
f = 0.1 to 50kHz
f = 10kHz
f = 10kHz
–0.3
76
74
70
68
66
64
±0.2
±10
See Typical Curve
±0.2
±10
8
30
0.5
(V+) + 0.3
92
84
80
MAX
±1
UNITS
mV
mV
µV/°C
µV/V
µV/V
µV/V
dB
pA
pA
pA
µVrms
nV/√Hz
fA/√Hz
V
dB
dB
dB
dB
dB
dB
Ω
|| pF
Ω
|| pF
dB
dB
dB
dB
±
1.2
200
250
V
S
= 2.7V to 5.5V, V
CM
< (V+) -1.8V
V
S
= 2.7V to 5.5V, V
CM
< (V+) -1.8V
e
n
i
n
V
CM
CMRR
CMRR
CMRR
V
S
= +5.5V, –0.3V < V
CM
< (V+)-1.8
V
S
= +5.5V, –0.3V < V
CM
< (V+)-1.8
V
S
= +5.5V, –0.3V < V
CM
< 5.8V
V
S
= +5.5V, –0.3V < V
CM
< 5.8V
V
S
= +2.7V, –0.3V < V
CM
< 3V
V
S
= +2.7V, –0.3V < V
CM
< 3V
10
13
|| 3
10
13
|| 6
122
120
THD+N
10
10
400
400
V
V
µA
µA
°C
°C
°C
°C/W
°C/W
°C/W
°C/W
°C/W
–40
–55
–65
θ
JA
NOTE: (1) Output voltage swings are measured between the output and power-supply rails.
OPA344, 2344, 4344
OPA345, 2345, 4345
SBOS107A
3
www.ti.com
ABSOLUTE MAXIMUM RATINGS
(1)
Supply Voltage, V+ to V- ................................................................... 7.5V
Signal Input Terminals, Voltage
(2)
..................... (V–) –0.5V to (V+) +0.5V
Current
(2)
.................................................... 10mA
(3)
.............................................................. Continuous
Output Short-Circuit
Operating Temperature .................................................. –55°C to +125°C
Storage Temperature ..................................................... –65°C to +150°C
Junction Temperature ...................................................................... 150°C
Lead Temperature (soldering, 10s) ................................................. 300°C
ESD Tolerance (Human Body Model) ............................................ 4000V
NOTES: (1) Stresses above these ratings may cause permanent damage.
Exposure to absolute maximum conditions for extended periods may
degrade device reliability. These are stress ratings only. Functional opera-
tion of the device at these conditions, or beyond the specified operating
conditions, is not implied. (2) Input terminals are diode-clamped to the power
supply rails. Input signals that can swing more than 0.5V beyond the supply
rails should be current-limited to 10mA or less. (3) Short-circuit to ground,
one amplifier per package.
ELECTROSTATIC
DISCHARGE SENSITIVITY
This integrated circuit can be damaged by ESD. Texas
Instruments recommends that all integrated circuits be handled
with appropriate precautions. Failure to observe proper han-
dling and installation procedures can cause damage.
ESD damage can range from subtle performance degrada-
tion to complete device failure. Precision integrated circuits
may be more susceptible to damage because very small
parametric changes could cause the device not to meet its
published specifications.
PACKAGE/ORDERING INFORMATION
(1)
PACKAGE
DESIGNATOR
DBV
SPECIFIED
TEMPERATURE
RANGE
–40°C to +85°C
PACKAGE
MARKING
B44
ORDERING
NUMBER
(2)
OPA344NA/250
OPA344NA /3K
OPA344UA
OPA344UA /2K5
OPA344PA
OPA2344EA /250
OPA2344EA /2K5
OPA2344UA
OPA2344UA /2K5
OPA2344PA
OPA4344EA /250
OPA4344EA /2K5
OPA4344UA
OPA4344UA /2K5
OPA4344PA
OPA345NA/250
OPA345NA/3K
OPA345UA
OPA345UA/2K5
OPA2345EA/250
OPA2345EA /2K5
OPA2345UA
OPA2345UA /2K5
OPA4345EA/250
OPA4345EA /2K5
OPA4345UA
OPA4345UA /2K5
TRANSPORT
MEDIA
Tape and Reel
Tape and Reel
Rails
Tape and Reel
Rails
Tape and Reel
Tape and Reel
Rails
Tape and Reel
Rails
Rails
Tape and Reel
Rails
Tape and Reel
Rails
Tape and Reel
Tape and Reel
Rails
Tape and Reel
Tape and Reel
Tape and Reel
Rails
Tape and Reel
Tape and Reel
Tape and Reel
Rails
Tape and Reel
PRODUCT
OPA344NA
PACKAGE
SOT23-5
"
OPA344UA
"
SO-8
"
D
"
–40°C to +85°C
"
OPA344UA
"
OPA344PA
OPA2344EA
"
8-Pin Dip
MSOP-8
"
P
DGK
"
–40° C to +85°C
–40°C to +85°C
"
OPA344PA
C44
"
OPA2344UA
"
SO-8
"
D
"
–40°C to +85°C
"
OPA2344UA
"
OPA2344PA
OPA4344EA
"
8-Pin DIP
TSSOP-14
"
P
PW
"
–40°C to +85°C
–40°C to +85°C
"
OPA2344PA
OPA4344EA
"
OPA4344UA
"
SO-14
"
D
"
–40°C to +85°C
"
OPA4344UA
"
OPA4344PA
OPA345NA
"
OPA345UA
"
OPA2345EA
"
14-Pin DIP
SOT23-5
"
SO-8
"
MSOP-8
"
N
DBV
"
D
"
DGK
"
–40°C to +85°C
–40°C to +85°C
"
–40°C to +85°C
"
–40°C to +85°C
"
OPA4344PA
A45
"
OPA345UA
"
B45
"
OPA2345UA
"
SO-8
"
D
"
–40°C to +85°C
"
OPA2345UA
"
OPA4345EA
"
TSSOP-14
"
PW
"
–40°C to +85°C
"
OPA4345EA
"
OPA4345UA
"
SO-14
"
D
"
–40°C to +85°C
"
OPA4345UA
"
"
"
"
"
NOTES: (1) For the most current package and ordering information, see the Package Option Addendum at the end of this document, or see the TI web site
at www.ti.com.
(2) Models with a slash (/) are available only in Tape and Reel in the quantities indicated (e.g., /2K5 indicates 2500 devices per reel). Ordering 2500
pieces of “OPA344UA/2K5” will get a single 2500-piece Tape and Reel.
4
www.ti.com
OPA344, 2344, 4344
OPA345, 2345, 4345
SBOS107A
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