(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 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 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.
PACKAGE/ORDERING INFORMATION
(1)
PRODUCT
PACKAGE-LEAD
PACKAGE
DESIGNATOR
DGK
DRB
DGK
DRB
SPECIFIED
TEMPERATURE
RANGE
−40°C to +125°C
−40°C to +125°C
−40°C to +125°C
−40°C to +125°C
PACKAGE
MARKING
A64
A65
A62
A63
ORDERING
NUMBER
OPA381AIDGKT
OPA381AIDGKR
OPA381AIDRBT
OPA381AIDRBR
OPA2381AIDGKT
OPA2381AIDGKR
OPA2381AIDRBT
OPA2381AIDRBR
TRANSPORT
MEDIA, QUANTITY
Tape and Reel, 250
Tape and Reel, 2500
Tape and Reel, 250
Tape and Reel, 3000
Tape and Reel, 250
Tape and Reel, 2500
Tape and Reel, 250
Tape and Reel, 3000
OPA381
OPA381
OPA2381
OPA2381
MSOP-8
DFN-8
MSOP-8
DFN-8
(1) For the most current package and ordering information, see the Package Option Addendum located at the end of this data sheet.
PIN ASSIGNMENTS
Top View
OPA381
NC
(1 )
−
In
+In
V
−
OPA381
8
7
6
5
NC
(1 )
V+
Out
NC
(1 )
NC
(1 )
−In
+In
V
−
1
2
3
4
MSOP−8
1
2
3
4
Exposed
Thermal
Die Pad
on
Underside
8
NC
(1 )
7
V+
6
Out
5
NC
(1 )
DFN−8
NOTE: (1) NC indicates no internal connection.
OPA2381
Out A
−
In A
OPA2381
8
7
6
5
V+
Out B
−
In B
Out A
−In
A
+In A
V
−
1
2
3
4
MSOP−8
1
2
3
4
+In A
V
−
+In B
Exposed
Thermal
Die Pad
on
Underside
8
V+
7
Out B
6
−
In B
5
+In B
DFN−8
2
www.ti.com
OPA381
OPA2381
SBOS313B − AUGUST 2004 − REVISED NOVEMBER 2004
ELECTRICAL CHARACTERISTICS: V
S
= +2.7V to +5.5V
Boldface
limits apply over the temperature range,
T
A
= −40°C to +125°C.
All specifications at TA = +25°C, RL = 10kΩ connected to VS/2, and VOUT = VS/2, unless otherwise noted.
OPA381
PARAMETER
OFFSET VOLTAGE
Input Offset Voltage
Drift
vs Power Supply
Over Temperature
Long-Term Stability(1)
Channel Separation, dc
INPUT BIAS CURRENT
Input Bias Current
Over Temperature
Input Offset Current
NOISE
Input Voltage Noise, f = 0.1Hz to 10Hz
Input Voltage Noise Density, f = 10kHz
Input Voltage Noise Density, f > 1MHz
Input Current Noise Density, f = 10kHz
INPUT VOLTAGE RANGE
Common-Mode Voltage Range
Common-Mode Rejection Ratio
INPUT IMPEDANCE
Differential Capacitance
Common-Mode Resistance and Capacitance
OPEN-LOOP GAIN
Open-Loop Voltage Gain
FREQUENCY RESPONSE
Gain-Bandwidth Product
Slew Rate
Settling Time, 0.0015%(3)
Settling Time, 0.003%(3)
Overload Recovery Time(4), (5)
OUTPUT
Voltage Output Swing from Positive Rail
Voltage Output Swing from Negative Rail
Voltage Output Swing from Positive Rail
Voltage Output Swing from Negative Rail
Output Current
Short-Circuit Current
Capacitive Load Drive
Open-Loop Output Impedance
POWER SUPPLY
Specified Voltage Range
Quiescent Current (per amplifier)
Over Temperature
TEMPERATURE RANGE
Specified and Operating Range
Storage Range
Thermal Resistance
MSOP-8
DFN-8
AOL
0.05V < VO < (V+) − 0.6V, VCM = VS/2, VS = 5V
0V < V
O
< (V+) − 0.6V, V
CM
= 0V, R
P
= 10kΩ to −5V
(2)
, V
S
= 5V
CONDITION
VOS
dVOS/dT
PSRR
VS = +5V, VCM = 0V
VS = +2.7V to +5.5V, VCM = 0V
VS = +2.7V to +5.5V, VCM = 0V
MIN
TYP
7
0.03
3.5
See Note (1)
1
MAX
25
0.1
20
20
UNITS
µV
µV/°C
µV/V
µV/V
µV/V
pA
pA
µV
PP
nV/√Hz
nV/√Hz
fA/√Hz
IB
IOS
en
en
en
in
VCM
CMRR
VCM = VS/2
VCM = VS/2
VS = +5V, VCM = 0V
VS = +5V, VCM = 0V
VS = +5V, VCM = 0V
VS = +5V, VCM = 0V
3
±50
See Typical Characteristics
6
±100
3
70
10
20
V−
95
(V+) − 1.8V
110
1
13|| 2.5
10
110
106
135
135
18
12
7
7
200
400
600
30
50
400
600
−20
0
10
20
See Typical Characteristics
250
2.7
5.5
1
1.1
+125
+150
150
65
VS = +5V, (V−) < VCM < (V+) − 1.8V
V
dB
pF
Ω
|| pF
dB
dB
MHz
V/µs
µs
µs
ns
mV
mV
mV
mV
mA
mA
Ω
V
mA
mA
°C
°C
°C/W
°C/W
GBW
SR
G = +1
VS = +5V, 4V Step, G = +1, OPA381
VS = +5V, 4V Step, G = +1, OPA2381
VIN
•
G = > VS
RL = 10kΩ
RL = 10kΩ
RP = 10kΩ to −5V(2)
RP = 10kΩ to −5V(2)
IOUT
ISC
CLOAD
RO
VS
IQ
F = 1MHz, IO = 0
IO = 0A
0.8
−40
−65
q
JA
(1) High temperature operating life characterization of zero-drift op amps applying the techniques used in the OPA381 have repeatedly demonstrated randomly
distributed variation approximately equal to measurement repeatability of 1µV. This consistency gives confidence in the stability and repeatability of these zero-
drift techniques.
(2) Tested with output connected only to R , a pulldown resistor connected between V
P
OUT and −5V, as shown in Figure 3. See also
Applications
section,
Achieving
Output Swing to Negative Rail.
(3) Transimpedance frequency of 250kHz.
(4) Time required to return to linear operation.
(5) From positive rail.
3
OPA381
OPA2381
SBOS313B − AUGUST 2004 − REVISED NOVEMBER 2004
www.ti.com
TYPICAL CHARACTERISTICS: V
S
= +2.7V to +5.5V
All specifications at TA = +25°C, RL = 10kΩ connected to VS/2, and VOUT = VS/2, unless otherwise noted.
OPEN−LOOP GAIN AND PHASE vs FREQUENCY
140
120
Open−Loop Gain (dB)
100
80
60
40
20
0
−20
10
100
1k
10k
100k
1M
10M
Frequency (Hz)
Gain
Phase
200
150
PSRR, CMRR (dB)
100
Phase (
_
)
50
0
−50
140
120
100
80
60
40
20
0
−
20
−40
−60
10
POWER−SUPPLY REJECTION RATIO AND
COMMON−MODE REJECTION vs FREQUENCY
PSRR
−
100
−150
−200
100M
CMRR
100
1k
10k
100k
1M
10M
100M
Frequency (Hz)
PHASE MARGIN vs LOAD CAPACITANCE
90
80
Phase Margin (
_
)
70
60
50
R
S
= 50Ω
40
30
R
S
= 0Ω
20
10
0
100
200 300 400 500 600 700
C
L
Load Capacitance (pF)
800 900 1000
R
S
= 100
Ω
Quiescent Current (mA)
1.00
0.90
0.85
0.80
0.75
0.70
0.65
0.60
0.55
0.50
2.7V
5.5V
QUIESCENT CURRENT vs TEMPERATURE
100pF
50kΩ
R
S
C
L
−40 −25
0
25
50
75
100
125
Temperature (_ C)
QUIESCENT CURRENT vs SUPPLY VOLTAGE
1.00
0.90
Quiescent Current (mA)
Input Bias Current (pA)
0.85
0.80
0.75
0.70
0.65
0.60
0.55
0.50
2.7
3.1
3.5
3.9
4.3
4.7
5.1
5.5
Supply Voltage (V)
1
1000
INPUT BIAS CURRENT vs TEMPERATURE
100
10
−40 −25
0
25
50
75
100
125
Temperature (_ C)
4
www.ti.com
OPA381
OPA2381
SBOS313B − AUGUST 2004 − REVISED NOVEMBER 2004
TYPICAL CHARACTERISTICS: V
S
= +2.7V to +5.5V (continued)
All specifications at TA = +25°C, RL = 10kΩ connected to VS/2, and VOUT = VS/2, unless otherwise noted.
模拟与混合信号
