1
A, Rail-to-Rail, CMOS
OPERATIONAL AMPLIFIERS
FEATURES
q
LOW SUPPLY CURRENT: 1
A
q
GAIN-BANDWIDTH: 70kHz
q
UNITY GAIN STABLE
q
LOW INPUT BIAS CURRENT: 10pA
q
WIDE SUPPLY RANGE: 1.8V to 5.5V
q
INPUT RANGE 200mV BEYOND RAILS
q
OUTPUT SWINGS TO 150mV OF RAILS
q
OUTPUT DRIVE CURRENT: 20mA
q
OPEN-LOOP GAIN: 90dB
q
SOT23
Micro
PACKAGES
APPLICATIONS
q
BATTERY PACKS AND POWER SUPPLIES
q
PORTABLE PHONES/PAGERS/CAMERAS
q
SOLAR-POWERED SYSTEMS
q
SMOKE/GAS/FIRE DETECTION SYSTEMS
q
REMOTE SENSORS
q
PCMCIA CARDS
q
DRIVING A/D CONVERTERS
q
Micro
POWER FILTERS
DESCRIPTION
The OPA349 and OPA2349 are ultra-low power op-
erational amplifiers that provide 70kHz bandwidth
with only 1
A 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.
OPA349
OPA2349
2000 Burr-Brown Corporation
PDS-1568A
Printed in U.S.A. June, 2000
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
For most current data sheet and other product
information, visit www.burr-brown.com
1
2
3
5
4
V+
In
Out
V
+In
OPA349
SOT23-5
1
2
3
4
8
7
6
5
NC
V+
Out
NC
NC
In
+In
V
OPA349
SO-8, PDIP-8
(1)
NOTE: (1) Available Q4 2000.
1
2
3
4
8
7
6
5
V+
Out B
In B
+In B
Out A
In A
+In A
V
OPA2349
SOT23-8, SO-8
OPA349
OPA349
OPA2349
2
OPA349
PARAMETER
CONDITION
MIN
TYP
MAX
UNITS
OFFSET VOLTAGE
Input Offset Voltage
V
OS
V
S
= 5V, V
CM
= 2.5V
2
10
mV
Drift
dV
OS
/dT
10
V/
C
vs Power Supply
PSRR
V
S
= 1.8V to 5.5V, V
CM
= (V) + 0.3V
350
1000
V/V
Channel Separation, dc (Dual version)
R
L
= 100k
10
V/V
INPUT VOLTAGE RANGE
Common-Mode Voltage Range
V
CM
(V) 0.2
(V+) + 0.2
V
Common-Mode Rejection Ratio
CMRR
V
S
= +5V, 0.2V < V
CM
< 3.5V
52
72
dB
V
S
= +5V, 0.2V < V
CM
< 5.2V
48
60
dB
INPUT BIAS CURRENT
Input Bias Current
I
B
1
10
pA
Input Offset Current
I
OS
1
10
pA
INPUT IMPEDANCE
Differential
10
13
|| 2
|| pF
Common-Mode
10
13
|| 4
|| pF
NOISE
Input Voltage Noise, f = 0.1Hz to 10Hz
8
Vp-p
Input Voltage Noise Density, f = 1kHz
e
n
300
nV/
Hz
Current Noise Density, f = 1kHz
i
n
4
fA/
Hz
OPEN-LOOP GAIN
Open-Loop Voltage Gain
R
L
= 1M
, V
S
= +5.5V, +0.3V < V
O
< +5.2V
74
90
dB
Open-Loop Voltage Gain
A
OL
R
L
= 10k
, V
S
= +5.5V, +0.35V < V
O
< +5.15V
74
90
dB
OUTPUT
Voltage Output Swing from Rail
R
L
= 1M
, V
S
= +5.5V, A
OL
> 74dB
150
300
mV
R
L
= 10k
, V
S
= +5.5V, A
OL
> 74dB
200
350
mV
Output Current
8
mA
Short-Circuit Current
I
SC
25
mA
FREQUENCY RESPONSE
C
L
= 10pF
Gain-Bandwidth Product
GBW
G = +1
70
kHz
Slew Rate
SR
V
S
= +5V, G = +1
0.02
V/
s
Settling Time, 0.1%
t
S
V
S
= 5V, 1V Step
65
s
0.01%
V
S
= 5V, 1V Step
80
s
Overload Recovery Time
V
IN
Gain = V
S
5
s
POWER SUPPLY
Specified Voltage Range
V
S
1.8
5.5
V
Operating Voltage Range
1.8
5.5
V
Quiescent Current (per amplifier)
I
Q
I
O
= 0
1
2
A
TEMPERATURE RANGE
Specified Range
0
+70
C
Storage Range
65
+150
C
Thermal Resistance
JA
C/W
SOT23-5 Surface Mount
200
C/W
SOT23-8 Surface Mount
200
C/W
SO-8 Surface Mount
150
C/W
PDIP-8
100
C/W
OPA349NA, UA, PA
OPA2349EA, UA
SPECIFICATIONS: V
S
= +1.8V to +5.5V
Boldface limits apply over the specified temperature range, T
A
= 0
C to +70
C
At T
A
= +25
C, R
L
= 1M
connected to V
S
/2, unless otherwise noted.
The information provided herein is believed to be reliable; however, BURR-BROWN assumes no responsibility for inaccuracies or omissions. BURR-BROWN assumes no responsibility
for the use of this information, and all use of such information shall be entirely at the user's own risk. Prices and specifications are subject to change without notice. No patent rights or
licenses to any of the circuits described herein are implied or granted to any third party. BURR-BROWN does not authorize or warrant any BURR-BROWN product for use in life support
devices and/or systems.
3
OPA349
Supply Voltage, V+ to V ................................................................... 5.5V
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, 3s) ................................................... 300
C
NOTES: (1) Stresses above these ratings may cause permanent damage.
Exposure to absolute maximum conditions for extended periods may de-
grade device reliability. These are stress ratings only, and functional opera-
tion of the device at these, or any other conditions beyond those specified,
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 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
PACKAGE
SPECIFIED
DRAWING
TEMPERATURE
PACKAGE
ORDERING
TRANSPORT
PRODUCT
PACKAGE
NUMBER
RANGE
MARKING
NUMBER
(1)
MEDIA
Single
OPA349NA
SOT23-5
331
0
C to +70
C
A49
OPA349NA/250
Tape and Reel
"
"
"
"
"
OPA349NA/3K
Tape and Reel
OPA349UA
SO-8
182
0
C to +70
C
OPA349UA
OPA349UA
Rails
"
"
"
"
"
OPA349UA/2K5
Tape and Reel
OPA349PA
(2)
PDIP-8
006
0
C to +70
C
OPA349PA
OPA349PA
Rails
Dual
OPA2349EA
SOT23-8
348
0
C to +70
C
C49
OPA2349EA/250
Tape and Reel
"
"
"
"
"
OPA2349EA/3K
Tape and Reel
OPA2349UA
SO-8
182
0
C to +70
C
OPA2349UA
OPA2349UA
Rails
"
"
"
"
"
OPA2349UA/2K5
Tape and Reel
NOTE: (1) Models with a slash (/) are available only in Tape and Reel in the quantities indicated (e.g., /3K indicates 3000 devices per reel). Ordering 3000 pieces of
"OPA2349EA/3K" will get a single 3000-piece Tape and Reel. (2) OPA349PA (DIP) available Q4 2000.
4
OPA349
TYPICAL PERFORMANCE CURVES
At T
A
= +25
C, V
S
= 5V, unless otherwise noted.
COMMON-MODE REJECTION RATIO vs FREQUENCY
Frequency (Hz)
CMRR (dB)
70
60
50
40
30
20
10
0
10
100
1k
10k
100k
CHANNEL SEPARATION vs FREQUENCY
Frequency (Hz)
Channel Separation (dB)
100
90
80
70
60
50
40
30
20
10
0
10
100
1k
10k
100k
INPUT VOLTAGE NOISE DENSITY
Frequency (Hz)
Voltage Noise (nV/
Hz)
1000
400
100
10
100
1k
10k
OFFSET VOLTAGE DRIFT
PRODUCTION DISTRIBUTION
Population
Offset Voltage Drift
30 25 20 15 10 5
0
5
10 15 20 25 30
35 40
POWER SUPPLY REJECTION RATIO vs FREQUENCY
Frequency (Hz)
PSRR (dB)
100
90
80
70
60
50
40
30
20
10
0
10
100
1k
10k
100k
+PSRR
PSRR
OPEN-LOOP GAIN AND PHASE vs FREQUENCY
Frequency (Hz)
Gain (dB)
Phase (
)
100
90
80
70
60
50
40
30
20
10
0
0
45
90
135
180
1
10
100
1k
10k
100k
1M
0.1
5
OPA349
TYPICAL PERFORMANCE CURVES
(Cont.)
At T
A
= +25
C, unless otherwise noted.
OUTPUT VOLTAGE vs OUTPUT CURRENT
Output Current (mA)
Output Voltage (V)
V+
(V+)1
(V+)2
(V+)+2
(V)+1
V
0
1
2
3
4
5
6
7
8
Sourcing Current
Sinking Current
0
C to +70
C
0
C to +70
C
MAXIMUM OUTPUT VOLTAGE vs FREQUENCY
Frequency (Hz)
Output Voltage (Vp-p)
6
5
4
3
2
1
0
100
1k
10k
100k
V
S
= +5.5V
V
S
= +5V
V
S
= +2.5V
V
S
= +1.8V
100
s/div
LARGE-SIGNAL STEP RESPONSE
G = 1, R
L
= 1M
1V/div
40
s/div
SMALL-SIGNAL STEP RESPONSE
G = 1, R
L
= 1M
, C
L
= 20pF
50mV/div
100
s/div
SMALL-SIGNAL STEP RESPONSE
G = 1, R
L
= 1M
, C
L
= 500pF
50mV/div
QUIESCENT CURRENT vs TEMPERATURE
Temperature (
C)
Quiescent Current (
A)
16
14
12
10
8
6
4
2
0
75
50
25
0
25
50
75
100
125
OPA2349
(per channel)
OPA349
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