OPA322 Datasheet, PDF (3/36 Pages) Texas Instruments – 20-MHz, Low-Noise, 1.8-V, RRI/O, CMOS Operational Amplifier with Shutdown

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OPA322, OPA322S
OPA2322, OPA2322S
OPA4322, OPA4322S
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
vs Temperature
vs Power supply
Over temperature
Channel separation
V_OS
dV_OS/dT
PSR
V_S = +5.5 V
V_S = +1.8 V to +5.5 V
V_S = +1.8 V to +5.5 V
At 1 kHz
0.5
2
mV
1.8
6
μV/°C
10
50
μV/V
20
65
μV/V
130
dB
INPUT VOLTAGE
Common-mode voltage range
Common-mode rejection ratio
Over temperature
V_CM
CMRR
(V–) – 0.1 V < V_CM < (V+) + 0.1 V
(V–) – 0.1
(V+) + 0.1
V
90
100
dB
90
dB
INPUT BIAS CURRENT
Input bias current
Over temperature
Input offset current
Over temperature
NOISE
I_B
T_A = –40°C to +85°C
OPA322, OPA322S, T_A = –40°C to +125°C
OPA2322, OPA2322S, T_A = –40°C to +125°C
OPA4322, OPA4322S, T_A = –40°C to +125°C
I_OS
T_A = –40°C to +85°C
T_A = –40°C to +125°C
±0.2
±10
pA
±50
pA
±800
pA
±400
pA
±400
pA
±0.2
±10
pA
±50
pA
±400
pA
Input voltage noise
Input voltage noise density
f = 0.1 Hz to 10 Hz
f = 1 kHz
e_n
f = 10 kHz
2.8
μV_PP
8.5
nV/√Hz
7
nV/√Hz
Input current noise density
i_n
INPUT CAPACITANCE
f = 1 kHz
0.6
fA/√Hz
Differential
5
pF
Common-mode
4
pF
OPEN-LOOP GAIN
Open-loop voltage gain
Phase margin
FREQUENCY RESPONSE
Gain bandwidth product
A_OL
PM
GBP
0.1 V < V_O < (V+) – 0.1 V, R_L = 10 kΩ
0.1 V < V_O < (V+) – 0.1 V, R_L = 10 kΩ
V_S = 5 V, C_L = 50 pF
V_S = 5.0 V, C_L = 50 pF
Unity gain
100
130
94
47
20
dB
dB
Degrees
MHz
Slew rate
SR
G = +1
10
V/μs
Settling time
To 0.1%, 2-V step, G = +1
t_S
To 0.01%, 2-V step, G = +1
0.25
μs
0.32
μs
Overload recovery time
V_IN × G > V_S
100
ns
Total harmonic distortion +
noise ⁽¹⁾
THD+N
V_O = 4 V_PP, G = +1, f = 10 kHz, R_L = 10 kΩ
V_O = 2 V_PP, G = +1, f = 10 kHz, R_L = 600 Ω
0.0005
0.0011
%
%
(1) Third-order filter; bandwidth = 80 kHz at –3 dB.
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