Datasheet

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SBOS279E − SEPTEMBER 2003 − REVISED MAY 2008
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3
ELECTRICAL CHARACTERISTICS: V
S
= +2.7V to +5.5V
Boldface limits apply over the specified temperature range, T
A
= −40°C to +125°C.
At T
A
= +25°C, R
L
= 10kΩ connected to V
S
/2, and V
OUT
= V
S
/2, unless otherwise noted.
OPA373, OPA2373, OPA374,
OPA2374, OPA4374
PARAMETER CONDITIONS
MIN TYP MAX
UNIT
OFFSET VOLTAGE
Input Offset Voltage V
OS
V
S
= 5V 1 5 mV
over Temperature 6.5 mV
Drift dV
OS
/dT 3 µV/°C
vs Power Supply PSRR V
S
= 2.7V to 5.5V, V
CM
< (V+) − 2V 25 100 µV/V
over Temperature V
S
= 2.7V to 5.5V, V
CM
< (V+) − 2V 150 µV/V
Channel Separation, DC 0.4 µV/V
f = 1kHz 128 dB
INPUT VOLTAGE RANGE
Common-Mode Voltage Range V
CM
(V−) − 0.2 (V+) + 0.2 V
Common-Mode Rejection Ratio CMRR (V−) − 0.2V < V
CM
< (V+) − 2V 80 90 dB
over Temperature (V−) − 0.2V < V
CM
< (V+) − 2V 70 dB
V
S
= 5.5V, (V−) − 0.2V < V
CM
< (V+) + 0.2V 66 dB
over Temperature V
S
= 5.5V, (V−) − 0.2V < V
CM
< (V+) + 0.2V 60 dB
INPUT BIAS CURRENT
Input Bias Current I
B
±0.5 ±10 pA
Input Offset Current I
OS
±0.5 ±10 pA
INPUT IMPEDANCE
Differential 10
13
 3 Ω pF
Common-Mode 10
13
 6 Ω pF
NOISE V
CM
< (V+) − 2V
Input Voltage Noise, f = 0.1Hz to 10Hz 10 µV
PP
Input Voltage Noise Density, f = 10kHz e
n
15 nV/√Hz
Input Current Noise Density, f = 10kHz i
n
4 fA/√Hz
OPEN-LOOP GAIN
Open-Loop Voltage Gain A
OL
V
S
= 5V, R
L
= 100kΩ, 0.025V < V
O
< 4.975V 94 110 dB
over Temperature V
S
= 5V, R
L
= 100kΩ, 0.025V < V
O
< 4.975V 80 dB
V
S
= 5V, R
L
= 5kΩ, 0.125V < V
O
< 4.875V 94 106 dB
over Temperature V
S
= 5V, R
L
= 5kΩ, 0.125V < V
O
< 4.875V 80 dB
OUTPUT
Voltage Output Swing from Rail R
L
= 100kΩ 18 25 mV
over Temperature R
L
= 100kΩ 25 mV
R
L
= 5kΩ 100 125 mV
over Temperature R
L
= 5kΩ 125 mV
Short-Circuit Current I
SC
See Typical Characteristics
Capacitive Load Drive C
LOAD
See Typical Characteristics
Open-Loop Output Impedance f = 1MHz, I
O
= 0 220 Ω
FREQUENCY RESPONSE C
L
= 100pF
Gain-Bandwidth Product GBW 6.5 MHz
Slew Rate SR G = +1 5 V/µs
Settling Time, 0.1% t
S
V
S
= 5V, 2V Step, G = +1 1 µs
0.01% V
S
= 5V, 2V Step, G = +1 1.5 µs
Overload Recovery Time V
IN
• Gain > V
S
0.3 µs
Total Harmonic Distortion + Noise THD+N V
S
= 5V, V
O
= 3V
PP
, G = +1, f = 1kHz 0.0013 %
ENABLE/SHUTDOWN
t
OFF
3 µs
t
ON
12 µs
V
L
(shutdown) V− (V−) + 0.8 V
V
H
(amplifier is active) (V−) + 2 V+ V
Input Bias Current of Enable Pin 0.2 µA
I
QSD
(per amplifier) < 0.5 1 µA