Datasheet

OPA322, OPA322S
OPA2322, OPA2322S
OPA4322, OPA4322S
www.ti.com SBOS538E –JANUARY 2011–REVISED JUNE 2012
ELECTRICAL CHARACTERISTICS: V
S
= +1.8 V to +5.5 V, or ±0.9 V to ±2.75 V
Boldface limits apply over the specified temperature range, T
A
= –40°C to +125°C.
At T
A
= +25°C, R
L
= 10 kΩ connected to V
S
/2, V
CM
= V
S
/2, V
OUT
= V
S
/2, and SHDN_x = V
S
+, unless otherwise noted.
OPA322, OPA322S, OPA2322,
OPA2322S, OPA4322, OPA4322S
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
OFFSET VOLTAGE
Input offset voltage V
OS
0.5 2 mV
vs Temperature dV
OS
/dT V
S
= +5.5 V 1.8 6 μV/°C
vs Power supply PSR V
S
= +1.8 V to +5.5 V 10 50 μV/V
Over temperature V
S
= +1.8 V to +5.5 V 20 65 μV/V
Channel separation At 1 kHz 130 dB
INPUT VOLTAGE
Common-mode voltage range V
CM
(V–) – 0.1 (V+) + 0.1 V
Common-mode rejection ratio CMRR (V–) – 0.1 V < V
CM
< (V+) + 0.1 V 90 100 dB
Over temperature 90 dB
INPUT BIAS CURRENT
Input bias current I
B
±0.2 ±10 pA
T
A
= –40°C to +85°C ±50 pA
OPA322, OPA322S, T
A
= –40°C to +125°C ±800 pA
Over temperature
OPA2322, OPA2322S, T
A
= –40°C to +125°C ±400 pA
OPA4322, OPA4322S, T
A
= –40°C to +125°C ±400 pA
Input offset current I
OS
±0.2 ±10 pA
T
A
= –40°C to +85°C ±50 pA
Over temperature
T
A
= –40°C to +125°C ±400 pA
NOISE
Input voltage noise f = 0.1 Hz to 10 Hz 2.8 μV
PP
f = 1 kHz 8.5 nV/√Hz
Input voltage noise density e
n
f = 10 kHz 7 nV/√Hz
Input current noise density i
n
f = 1 kHz 0.6 fA/√Hz
INPUT CAPACITANCE
Differential 5 pF
Common-mode 4 pF
OPEN-LOOP GAIN
0.1 V < V
O
< (V+) – 0.1 V, R
L
= 10 kΩ 100 130 dB
Open-loop voltage gain A
OL
0.1 V < V
O
< (V+) – 0.1 V, R
L
= 10 kΩ 94 dB
Phase margin PM V
S
= 5 V, C
L
= 50 pF 47 Degrees
FREQUENCY RESPONSE V
S
= 5.0 V, C
L
= 50 pF
Gain bandwidth product GBP Unity gain 20 MHz
Slew rate SR G = +1 10 V/μs
To 0.1%, 2-V step, G = +1 0.25 μs
Settling time t
S
To 0.01%, 2-V step, G = +1 0.32 μs
Overload recovery time V
IN
× G > V
S
100 ns
V
O
= 4 V
PP
, G = +1, f = 10 kHz, R
L
= 10 kΩ 0.0005 %
Total harmonic distortion +
THD+N
noise
(1)
V
O
= 2 V
PP
, G = +1, f = 10 kHz, R
L
= 600 Ω 0.0011 %
(1) Third-order filter; bandwidth = 80 kHz at –3 dB.
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