OPA379
OPA2379
OPA4379
SBOS347A − NOVEMBER 2005 − REVISED DECEMBER 2005
1.8V, 2.9µA, 90kHz, Rail-to-Rail I/O
OPERATIONAL AMPLIFIERS
FEATURES
D
D
D
D
LOW NOISE: 2.8µV
PP
microPower:
5.5µA (max)
LOW OFFSET VOLTAGE: 1.5mV (max)
DC PRECISION:
− CMRR: 100dB
− PSRR: 2µV/V
− A
OL
: 120dB
DESCRIPTION
The OPA379 family of micropower, low-voltage
operational amplifiers is designed for battery-powered
applications. These amplifiers operate on a supply voltage
as low as 1.8V. High-performance, single-supply
operation with rail-to-rail capability makes the OPA379
family useful for a wide range of applications.
In addition to
microSize
packages, the OPA379 family of
op amps features impressive bandwidth (90kHz), low bias
current (25pA), and low noise (80nV/√Hz) relative to the
very low quiescent current (5.5µA max).
The OPA379 (single) is available in SC70-5, SOT23-5,
and SO-8 packages. The OPA2379 (dual) comes in
SOT23-8 and SO-8 packages. The OPA4379 (quad) is
offered in a TSSOP-14 package. All versions are specified
from −40°C to +125°C.
D
WIDE SUPPLY VOLTAGE RANGE: 1.8V to 5.5V
D
microSize
PACKAGES
APPLICATIONS
D
D
D
D
BATTERY-POWERED INSTRUMENTS
PORTABLE DEVICES
MEDICAL INSTRUMENTS
HANDHELD TEST EQUIPMENT
OPAx379 RELATED PRODUCTS
FEATURES
1µA, 70kHz, 2mV V
OS
, 1.8V to 5.5V Supply
1µA, 5.5kHz, 390µV V
OS
, 2.5V to 16V Supply
1µA, 5.5kHz, 0.6mV V
OS
, 2.5V to 12V Supply
7µA, 160kHz, 0.5mV V
OS
, 2.7V to 16V Supply
7µA, 160kHz, 0.5mV V
OS
, 2.7V to 16V Supply
20µA, 350kHz, 2mV V
OS
, 2.3V to 5.5V Supply
20µA, 500kHz, 550µV V
OS
, 1.8V to 3.6V Supply
45µA, 1MHz, 1mV V
OS
, 2.1V to 5.5V Supply
PRODUCT
OPAx349
TLV240x
TLV224x
TLV27Lx
TLV238x
OPAx347
TLV276x
OPAx348
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
2005, Texas Instruments Incorporated
www.ti.com
OPA379
OPA2379
OPA4379
SBOS347A − NOVEMBER 2005 − REVISED DECEMBER 2005
www.ti.com
ABSOLUTE MAXIMUM RATINGS
(1)
Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +7V
Signal Input Terminals, Voltage
(2)
. . . . . . . . . −0.5V to (V+) + 0.5V
Current
(2)
. . . . . . . . . . . . . . . . . . . .
±10mA
Output Short-Circuit
(3)
. . . . . . . . . . . . . . . . . . . . . . . . . . Continuous
Operating Temperature . . . . . . . . . . . . . . . . . . . . . −40°C to +125°C
Storage Temperature . . . . . . . . . . . . . . . . . . . . . . . −65°C to +150°C
Junction Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +150°C
ESD Rating
Human Body Model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2000V
Charged Device Model . . . . . . . . . . . . . . . . . . . . . . . . . . . 1000V
(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, and
functional operation of the device at these or any other conditions
beyond those specified is not supported.
(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.
This integrated circuit can be damaged by ESD. Texas
Instruments 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.
ORDERING INFORMATION
(1)
PRODUCT
OPA379
(2)
OPA379
(2)
OPA379
OPA2379
(2)
OPA2379
PACKAGE-LEAD
SC70−5
SOT23−5
SO−8
SOT23−8
SO−8
PACKAGE
DESIGNATOR
DCK
DBV
D
DCN
D
PACKAGE
MARKING
AYR
AYQ
OPA379
B61
OPA2379
OPA4379
(2)
TSSOP−14
PW
OPA4379
(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) Available Q1, 2006.
PIN CONFIGURATIONS
OPA379
+IN
V−
−
IN
1
2
3
SC70−5
(3)
4
OUT
5
V+
OUT 1
V− 2
+IN 3
OPA379
5
V+
NC
(1)
1
−IN
2
4
SOT23−5
(3)
−IN
+IN 3
V− 4
OPA379
8
7
6
5
SO−8
NC
(1)
V+
OUT
NC
(1)
OPA2379
OUT A
−IN
+IN
V
−
1
2
3
4
B61
8
7
6
5
SOT23−8
(2)(3)
V+
OUT B
−IN
B
+IN B
OUT A 1
−IN
A 2
+IN A 3
V− 4
OPA2379
8
7
6
5
SO−8
−IN
B
6
V+
OUT B
−IN
B
+IN B
OUT A
−IN
A
+IN A
V+
+IN B
1
2
3
4
5
OPA4379
14
13
12
11
10
9
8
TSSOP−14
(3)
OUT D
−IN
D
+IN D
V−
+IN C
−IN
C
OUT C
NOTES:
OUT B 7
(1) NC denotes no internal connection.
(2) Pin 1 of the SOT23−8 package is determined by orienting the package marking as shown.
(3) Available Q1, 2006.
2
www.ti.com
OPA379
OPA2379
OPA4379
SBOS347A − NOVEMBER 2005 − REVISED DECEMBER 2005
ELECTRICAL CHARACTERISTICS: V
S
= +1.8V TO +5.5V
Boldface
limits apply over the specified temperature range indicated.
At T
A
= +25°C, R
L
= 25kΩ connected to V
S
/2, and V
CM
< (V+) − 1V, unless otherwise noted.
OPA379, OPA2379, OPA4379
PARAMETER
OFFSET VOLTAGE
Initial Offset Voltage
Over −40°C to +125°C
Drift, −40°C to +85°C
−40°C to +125°C
vs Power Supply
Over −40°C to +125°C
INPUT VOLTAGE RANGE
Common-Mode Voltage Range
Common-Mode Rejection Ratio(1)
Over −40°C to +85°C
Over −40°C to +125°C
INPUT BIAS CURRENT
Input Bias Current
Input Offset Current
INPUT IMPEDANCE
Differential
Common-Mode
NOISE
Input Voltage Noise, f = 0.1Hz to 10Hz
Input Voltage Noise Density, f = 1kHz
Input Current Noise Density, f = 1kHz
OPEN-LOOP GAIN
Open-Loop Voltage Gain
Over −40°C to +125°C
Over −40°C to +125°C
OUTPUT
Voltage Output Swing from Rail
Over −40°C to +125°C
Over −40°C to +125°C
Short-Circuit Current
Capacitive Load Drive
Closed-Loop Output Impedance
Open-Loop Output Impedance
FREQUENCY RESPONSE
Gain Bandwidth Product
Slew Rate
Overload Recovery Time
Turn-On Time
POWER SUPPLY
Specified/Operating Voltage Range
Quiescent Current per Amplifier
Over −40°C to +125°C
TEMPERATURE
Specified/Operating Range
Storage Range
Thermal Resistance
SC70−5
SOT23−5
SOT23−8, TSSOP−14, SO−8
I
B
I
OS
V
OS
dV
OS
/dT
PSRR
CONDITIONS
V
S
= 5V
MIN
TYP
0.4
1.5
2.7
2
MAX
1.5
2
UNIT
mV
mV
µV/°C
µV/°C
µV/V
µV/V
V
dB
dB
dB
±5
±5
1013 || 3
1013 || 6
2.8
80
1
V
S
= 5V, R
L
= 25kΩ, 100mV < V
O
< (V+) − 100mV
V
S
= 5V, R
L
= 25kΩ, 100mV < V
O
< (V+) − 100mV
V
S
= 5V, R
L
= 5kΩ, 500mV < V
O
< (V+) − 500mV
V
S
= 5V, R
L
= 5kΩ, 500mV < V
O
< (V+) − 500mV
R
L
= 25kΩ
R
L
= 25kΩ
R
L
= 5kΩ
R
L
= 5kΩ
I
SC
C
LOAD
R
OUT
R
O
GBW
SR
t
ON
V
S
I
Q
1.8
V
S
= 5.5V, I
O
= 0
2.9
100
92
100
92
120
120
±50
±50
pA
pA
Ω
|| pF
Ω
|| pF
µV
PP
nV/√Hz
fA/√Hz
dB
dB
dB
dB
10
15
50
75
mV
mV
mV
mV
mA
Ω
kΩ
kHz
V/µs
µs
ms
5.5
5.5
10
+125
+150
250
200
150
V
µA
µA
°C
°C
°C/W
°C/W
°C/W
10
20
V
CM
CMRR
(V−) < V
CM
< (V+) − 1V
(V−) < V
CM
< (V+) − 1V
(V−) < V
CM
< (V+) − 1V
V
S
= 5V, V
CM
< = VS/2
V
S
= 5V
90
80
62
(V−) − 0.1 to (V+) + 0.1
100
e
n
i
n
A
OL
5
25
G = 1, f = 1kHz, I
O
= 0
f = 100kHz, I
O
= 0
C
LOAD
= 30pF
G = +1
V
IN
S
GAIN > V
S
±5
See Typical Characteristics Curve
10
28
90
0.03
25
1
−40
−65
q
JA
(1) See Typical Characteristic,
Common-Mode Rejection Ratio vs Frequency.
3
OPA379
OPA2379
OPA4379
SBOS347A − NOVEMBER 2005 − REVISED DECEMBER 2005
www.ti.com
TYPICAL CHARACTERISTICS
At T
A
= +25°C, V
S
= 5V, R
L
= 25kΩ connected to V
S
/2, unless otherwise noted.
OPEN−
LOOP GAIN AND PHASE
vs FREQUENCY
120
100
80
Gain (dB)
60
40
20
0
0.1
1
10
100
Frequency (Hz)
1k
10k
0
−30
CMRR and PSRR (dB)
−60
Phase (_)
−90
−120
−150
−180
100k
120
100
COMMON−MODE AND
POWER SUPPLY REJECTION RATIO
vs FREQUENCY
−PSRR
80
+PSRR
60
40
CMRR
20
0
0.1
1
10
100
1k
Frequency (Hz)
10k
100k
MAXIMUM OUTPUT VOLTAGE
vs FREQUENCY
5.0
4.5
Quiescent Current (µA)
4.0
Output Voltage (V
PP
)
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
1k
10k
Frequency (Hz)
100k
1.5
1.5
2.0
2.5
3.0
3.5
QUIESCENT CURRENT
vs SUPPLY VOLTAGE
2.5
2.0
3.0
3.5
4.0
4.5
5.0
5.5
Supply Voltage (V)
OUTPUT VOLTAGE
vs OUTPUT CURRENT
2.5
2.0
1.5
1.0
V
OUT
(V)
0.5
0
−
0.5
−1.0
−
1.5
−2.0
−
2.5
0
1
2
3
4
5
I
OUT
(mA)
6
7
8
9
10
5
1.5
2.0
+125_ C
+85_C
+25_ C
V
S
=
±2.5V
−40_
C
Short−Circuit Current (mA)
20
25
SHORT−CIRCUIT CURRENT
vs SUPPLY VOLTAGE
+I
SC
−I
SC
15
10
2.5
3.0
3.5
4.0
4.5
5.0
5.5
Supply Voltage (V)
4
www.ti.com
OPA379
OPA2379
OPA4379
SBOS347A − NOVEMBER 2005 − REVISED DECEMBER 2005
TYPICAL CHARACTERISTICS (continued)
At T
A
= +25°C, V
S
= 5V, R
L
= 25kΩ connected to V
S
/2, unless otherwise noted.
OFFSET VOLTAGE vs COMMON−MODE VOLTAGE
vs TEMPERATURE
15000
12500
10000
Offset Voltage (µV)
7500
5000
2500
0
−2500
−5000
−7500
−
10000
−12500
−0.1
OFFSET VOLTAGE
PRODUCTION DISTRIBUTION
Unit 1
CMRR Specified Range
5.1
0
1
2
3
4
5
Common−Mode Voltage (V)
OFFSET VOLTAGE DRIFT DISTRIBUTION
(−40_C to +85_ C)
Population
≤1
≤2
≤3
≤4
≤5
Population
>5
Offset Voltage Drift (µV/_C)
QUIESCENT CURRENT
vs TEMPERATURE
5.0
4.5
4.0
Population
3.5
I
Q
(
µ
A)
3.0
2.5
2.0
1.5
1.0
0
25
50
75
100
125
Temperature (_C)
1.00
1.20
1.40
1.60
1.80
2.00
2.20
2.40
2.60
2.80
3.00
3.20
3.40
3.60
3.80
4.00
4.20
4.40
4.60
4.80
5.00
Quiescent Current (µA)
−50
−25
−1500
−1350
−1200
−1050
−900
−750
−600
−450
−300
−150
0
150
300
450
600
750
900
1050
1200
1350
1500
Offset Voltage (µV)
OFFSET VOLTAGE DRIFT DISTRIBUTION
(−40_C to +125_ C)
≤1
≤2
≤3
≤4
≤5
>5
Offset Voltage Drift (µV/_C)
QUIESCENT CURRENT
PRODUCTION DISTRIBUTION
−15000
−40_C
+85_ C
+125_C
Unit 2
Population
5
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