LOW POWER, SINGLE-SUPPLY, RAIL-TO-RAIL
OPERATIONAL AMPLIFIERS
Micro
Amplifier
TM
Series
2000 Burr-Brown Corporation
PDS-1486A
Printed in U.S.A. April, 2000
FEATURES
q
RAIL-TO-RAIL INPUT
q
RAIL-TO-RAIL OUTPUT (within 1mV)
q
LOW QUIESCENT CURRENT: 150
A typ
q
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/
s
OPA345: 2V/
s
q
THD + NOISE: 0.006%
APPLICATIONS
q
PCMCIA CARDS
q
DATA ACQUISITION
q
PROCESS CONTROL
q
AUDIO PROCESSING
q
COMMUNICATIONS
q
ACTIVE FILTERS
q
TEST EQUIPMENT
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
250
A (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 applicaitons 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 40C to 85C. A SPICE macromodel is
available for design analysis.
OPA345
OPA2345
OPA4345
OPA344
OPA2344
OPA4344
1
2
3
5
4
V+
In
Out
V
+In
OPA344, OPA345
SOT23-5
1
2
3
4
8
7
6
5
NC
V+
Out
NC
NC
In
+In
V
OPA344, OPA345
SO-8, 8-Pin DIP (OPA344 Only)
1
2
3
4
8
7
6
5
V+
Out B
In B
+In B
Out A
In A
+In A
V
OPA2344, OPA2345
SO-8, MSOP-8, 8-Pin DIP (OPA2344 Only)
A
B
1
2
3
4
5
6
7
14
13
12
11
10
9
8
Out D
In D
+In D
V
+In C
In C
Out C
Out A
In A
+In A
+V
+In B
In B
Out B
OPA4344, OPA4345
TSSOP-14, SO-14, 14-PIn DIP (OPA4344 Only)
A
D
B
C
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
OPA342
OPA4344
OPA344
OPA345
For most current data sheet and other product
information, visit www.burr-brown.com
2
OPA344, 2344, 4344
OPA345, 2345, 4345
SPECIFICATIONS: V
S
= 2.7V to 5.5V
At T
A
= +25
C, R
L
= 10k
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
CONDITION
MIN
TYP
MAX
UNITS
OFFSET VOLTAGE
Input Offset Voltage
V
OS
V
S
= +5.5V, V
CM
= V
S
/2
0.2
1
mV
Over Temperature
0.8
1.2
mV
vs Temperature
dV
OS
/dT
3
V/
C
vs Power Supply
PSRR
V
S
= 2.7V to 5.5V, V
CM
< (V+) -1.8V
30
200
V/V
Over Temperature
V
S
= 2.7V to 5.5V, V
CM
< (V+) -1.8V
250
V/V
Channel Separation, dc
0.2
V/V
f = 1kHz
130
dB
INPUT BIAS CURRENT
Input Bias Current
I
B
0.2
10
pA
Over Temperature
See Typical Curve
pA
Input Offset Current
I
OS
0.2
10
pA
NOISE
Input Voltage Noise
f = 0.1 to 50kHz
8
Vrms
Input Voltage Noise Density
e
n
f = 10kHz
30
nV/
Hz
Current Noise Density
i
n
f = 10kHz
0.5
fA/
Hz
INPUT VOLTAGE RANGE
Common-Mode Voltage Range
V
CM
0.3
(V+) + 0.3
V
Common-Mode Rejection Ratio
CMRR
V
S
= +5.5V, 0.3V
< V
CM
< (V+)-1.8
76
92
dB
Over Temperature
V
S
= +5.5V, 0.3V
< V
CM
< (V+)-1.8
74
dB
Common-Mode Rejection
CMRR
V
S
= +5.5V, 0.3V
< V
CM
< 5.8V
70
84
dB
Over Temperature
V
S
= +5.5V, 0.3V
< V
CM
< 5.8V
68
dB
Common-Mode Rejection
CMRR
V
S
= +2.7V, 0.3V
< V
CM
< 3V
66
80
dB
Over Temperature
V
S
= +2.7V, 0.3V
< V
CM
< 3V
64
dB
INPUT IMPEDANCE
Differential
10
13
|| 3
|| pF
Common-Mode
10
13
|| 6
|| pF
OPEN-LOOP GAIN
Open-Loop Voltage Gain
A
OL
R
L
= 100k
, 10mV < V
O
< (V+) 10mV
104
122
dB
Over Temperature
R
L
= 100k
, 10mV < V
O
< (V+) 10mV
100
dB
R
L
= 5k
, 400mV < V
O
< (V+) 400mV
96
120
dB
Over Temperature
R
L
= 5k
, 400mV < V
O
< (V+) 400mV
90
dB
FREQUENCY RESPONSE
C
L
= 100pF
Gain-Bandwidth Product
GBW
1
MHz
Slew Rate
SR
0.8
V/
s
Settling Time, 0.1%
V
S
= 5.5V, 2V Step
5
s
0.01%
V
S
= 5.5V, 2V Step
8
s
Overload Recovery Time
V
IN
G = V
S
2.5
s
Total Harmonic Distortion + Noise
THD+N
V
S
= 5.5V, V
O
= 3Vp-p, G = 1, f = 1kHz
0.006
%
OUTPUT
Voltage Output Swing from Rail
(1)
R
L
= 100k
, A
OL
96dB
1
mV
R
L
= 100k
,
A
OL
104dB
3
10
mV
Over Temperature
R
L
= 100k
,
A
OL
100dB
10
mV
R
L
= 5k
, A
OL
96dB
40
400
mV
Over Temperature
R
L
= 5k
,
A
OL
90dB
400
mV
Short-Circuit Current
I
SC
15
mA
Capacitive Load Drive
C
LOAD
See Typical Curve
POWER SUPPLY
Specified Voltage Range
V
S
2.7
5.5
V
Operating Voltage Range
2.5 to 5.5
V
Quiescent Current (per amplifier)
I
Q
V
S
= 5.5V, I
O
= 0
150
250
A
Over Temperature
300
A
TEMPERATURE RANGE
Specified Range
40
85
C
Operating Range
55
125
C
Storage Range
65
150
C
Thermal Resistance
JA
SOT23-5 Surface Mount
200
C/W
MSOP-8 Surface Mount
150
C/W
8-Pin DIP
100
C/W
SO-8 Surface Mount
150
C/W
TSSOP-14 Surface Mount
100
C/W
14-Pin DIP
80
C/W
SO-14 Surface Mount
100
C/W
NOTE: (1) Output voltage swings are measured between the output and power-supply rails.
3
OPA344, 2344, 4344
OPA345, 2345, 4345
SPECIFICATIONS: V
S
= 2.7V to 5.5V
At T
A
= +25
C, R
L
= 10k
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
CONDITION
MIN
TYP
MAX
UNITS
OFFSET VOLTAGE
Input Offset Voltage
V
OS
V
S
= +5.5V, V
CM
= V
S
/2
0.2
1
mV
Over Temperature
0.8
1.2
mV
vs Temperature
dV
OS
/dT
3
V/
C
vs Power Supply
PSRR
V
S
= 2.7V to 5.5V, V
CM
< (V+) -1.8V
30
200
V/V
Over Temperature
V
S
= 2.7V to 5.5V, V
CM
< (V+) -1.8V
250
V/V
Channel Separation, dc
0.2
V/V
f = 1kHz
130
dB
INPUT BIAS CURRENT
Input Bias Current
I
B
0.2
10
pA
Over Temperature
See Typical Curve
pA
Input Offset Current
I
OS
0.2
10
pA
NOISE
Input Voltage Noise
f = 0.1 to 50kHz
8
Vrms
Input Voltage Noise Density
e
n
f = 10kHz
30
nV/
Hz
Current Noise Density
i
n
f = 10kHz
0.5
fA/
Hz
INPUT VOLTAGE RANGE
Common-Mode Voltage Range
V
CM
0.3
(V+) + 0.3
V
Common-Mode Rejection Ratio
CMRR
V
S
= +5.5V, 0.3V
< V
CM
< (V+)-1.8
76
92
dB
Over Temperature
V
S
= +5.5V, 0.3V
< V
CM
< (V+)-1.8
74
dB
Common-Mode Rejection Ratio
CMRR
V
S
= +5.5V, 0.3V
< V
CM
< 5.8V
70
84
dB
Over Temperature
V
S
= +5.5V, 0.3V
< V
CM
< 5.8V
68
dB
Common-Mode Rejection Ratio
CMRR
V
S
= +2.7V, 0.3V
< V
CM
< 3V
66
80
dB
Over Temperature
V
S
= +2.7V, 0.3V
< V
CM
< 3V
64
dB
INPUT IMPEDANCE
Differential
10
13
|| 3
|| pF
Common-Mode
10
13
|| 6
|| pF
OPEN-LOOP GAIN
Open-Loop Voltage Gain
A
OL
R
L
= 100k
, 10mV < V
O
< (V+) 10mV
104
122
dB
Over Temperature
R
L
= 100k
, 10mV < V
O
< (V+) 10mV
100
dB
R
L
= 5k
, 400mV < V
O
< (V+) 400mV
96
120
dB
Over Temperature
R
L
= 5k
, 400mV < V
O
< (V+) 400mV
90
dB
FREQUENCY RESPONSE
C
L
= 100pF
Gain-Bandwidth Product
GBW
3
MHz
Slew Rate
SR
2
V/
s
Settling Time, 0.1%
G = 5, 2V Output Step
1.5
s
0.01%
G = 5, 2V Output Step
1.6
s
Overload Recovery Time
V
IN
G = V
S
2.5
s
Total Harmonic Distortion + Noise
THD+N
V
S
= 5.5V, V
O
= 2.5Vp-p, G = 5, f = 1kHz
0.006
%
OUTPUT
Voltage Output Swing from Rail
(1)
R
L
= 100k
, A
OL
96dB
1
mV
R
L
= 100k
,
A
OL
104dB
3
10
mV
Over Temperature
R
L
= 100k
,
A
OL
100dB
10
mV
R
L
= 5k
, A
OL
96dB
40
400
mV
Over Temperature
R
L
= 5k
,
A
OL
90dB
400
mV
Short-Circuit Current
I
SC
15
mA
Capacitive Load Drive
C
LOAD
See Typical Curve
POWER SUPPLY
Specified Voltage Range
V
S
2.7
5.5
V
Operating Voltage Range
2.5 to 5.5
V
Quiescent Current (per amplifier)
I
Q
V
S
= 5.5V, I
O
= 0
150
250
A
Over Temperature
300
A
TEMPERATURE RANGE
Specified Range
40
85
C
Operating Range
55
125
C
Storage Range
65
150
C
Thermal Resistance
JA
SOT23-5 Surface Mount
200
C/W
MSOP-8 Surface Mount
150
C/W
SO-8 Surface Mount
150
C/W
TSSOP-14 Surface Mount
100
C/W
SO-14 Surface Mount
100
C/W
NOTE: (1) Output voltage swings are measured between the output and power-supply rails.
4
OPA344, 2344, 4344
OPA345, 2345, 4345
PACKAGE
SPECIFIED
DRAWING
TEMPERATURE
PACKAGE
ORDERING
TRANSPORT
PRODUCT
PACKAGE
NUMBER
RANGE
MARKING
NUMBER
(1)
MEDIA
OPA344NA
SOT23-5
331
40
C to +85
C
B44
OPA344NA/250
Tape and Reel
"
"
"
"
"
OPA344NA/3K
Tape and Reel
OPA344UA
SO-8
182
40
C to +85
C
OPA344UA
OPA344UA
Rails
"
"
"
"
"
OPA344UA /2K5
Tape and Reel
OPA344PA
8-Pin Dip
006
40
C to +85
C
OPA344PA
OPA344PA
Rails
OPA2344EA
MSOP-8
337
40
C to +85
C
C44
OPA2344EA /250
Tape and Reel
"
"
"
"
"
OPA2344EA /2K5
Tape and Reel
OPA2344UA
SO-8
182
40
C to +85
C
OPA2344UA
OPA2344UA
Rails
"
"
"
"
"
OPA2344UA/2K5
Tape and Reel
OPA2344PA
8-Pin DIP
006
40
C to +85
C
OPA2344PA
OPA2344PA
Rails
OPA4344EA
TSSOP-14
357
40
C to +85
C
OPA4344EA
OPA4344EA /250
Rails
"
"
"
"
"
OPA4344EA /2K5
Tape and Reel
OPA4344UA
SO-14
235
40
C to +85
C
OPA4344UA
OPA4344UA
Rails
"
"
"
"
"
OPA4344UA/2K5
Tape and Reel
OPA4344PA
14-Pin DIP
010
40
C to +85
C
OPA4344PA
OPA4344PA
Rails
OPA345NA
SOT23-5
331
40
C to +85
C
A45
OPA345NA/250
Tape and Reel
"
"
"
"
"
OPA345NA/3K
Tape and Reel
OPA345UA
SO-8
182
40
C to +85
C
OPA345UA
OPA345UA
Rails
"
"
"
"
"
OPA345UA/2K5
Tape and Reel
OPA2345EA
MSOP-8
337
40
C to +85
C
B45
OPA2345EA/250
Tape and Reel
"
"
"
"
"
OPA2345EA /2K5
Tape and Reel
OPA2345UA
SO-8
182
40
C to +85
C
OPA2345UA
OPA2345UA
Rails
"
"
"
"
"
OPA2345UA/2K5
Tape and Reel
OPA4345EA
TSSOP-14
357
40
C to +85
C
OPA4345EA
OPA4345EA/250
Tape and Reel
"
"
"
"
"
OPA4345EA /2K5
Tape and Reel
OPA4345UA
SO-14
235
40
C to +85
C
OPA4345UA
OPA4345UA
Rails
"
"
"
"
"
OPA4345UA/2K5
Tape and Reel
NOTE: (1) 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.
PACKAGE/ORDERING INFORMATION
Supply Voltage, V+ to V- ................................................................... 7.5V
Signal Input Terminals, Voltage
(2)
..................... (V) 0.5V to (V+) +0.5V
Current
(2)
.................................................... 10mA
Output Short-Circuit
(3)
.............................................................. Continuous
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.
ABSOLUTE MAXIMUM RATINGS
(1)
ELECTROSTATIC
DISCHARGE SENSITIVITY
This integrated circuit can be damaged by ESD. Burr-Brown
recommends that all integrated circuits be handled with
appropriate precautions. Failure to observe proper handling
and installation procedures can cause damage. ESD damage
can range from subtle performance degradation 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.
5
OPA344, 2344, 4344
OPA345, 2345, 4345
TYPICAL PERFORMANCE CURVES
At T
A
= +25
C, V
S
= +5V, and R
L
= 10k
connected to V
S
/2, unless otherwise noted.
POWER SUPPLY AND COMMON-MODE
REJECTION RATIO vs FREQUENCY
10
Rejection Ratio (dB)
Frequency (Hz)
100
1k
10k
100k
100
80
60
40
20
10
+PSRR
CMRR
PSRR
MAXIMUM OUTPUT VOLTAGE vs FREQUENCY
100k
Maximum Output Voltage (Vp-p)
Frequency (Hz)
1M
10M
6
5
4
3
2
1
0
OPA344
V
S
= +2.7V
V
S
= +5.5V
V
S
=
+5V
OPA345
CHANNEL SEPARATION vs FREQUENCY
100
Channel Separation (dB)
Frequency (Hz)
1k
10k
100k
1M
140
120
100
80
60
Dual and quad devices.
G = 1, all channels.
Quad measured channel
A to D or B to C--other
combinations yield improved
rejection.
VOLTAGE AND CURRENT NOISE
SPECTRAL DENSITY vs FREQUENCY
1
Voltage Noise (nV/
Hz)
Frequency (Hz)
10
100
1k
10k
100k
1M
10M
10000
1000
100
10
Current Noise (fA/
Hz)
100
10
1
0.1
V
N
I
N
OPEN-LOOP GAIN/PHASE vs FREQUENCY
0.1
1
Gain (dB)
0
30
60
90
120
150
180
Phase (
)
Frequency (Hz)
10
100
1k
10k
100k
1M
10M
120
100
80
60
40
20
0
Gain
Phase
OPA345
OPEN-LOOP GAIN/PHASE vs FREQUENCY
0.1
1
Gain (dB)
0
30
60
90
120
150
180
Phase (
)
Frequency (Hz)
10
100
1k
10k
100k
1M
10M
120
100
80
60
40
20
0
Gain
Phase
OPA344
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