OPA2320 Datasheet, PDF (3/32 Pages) Texas Instruments – Precision, 20MHz, 0.9pA, Low-Noise, RRIO, CMOS Operational Amplifier with Shutdown

OPA320, OPA2320
OPA320S, OPA2320S
www.ti.com
SBOS513D – AUGUST 2010 – REVISED NOVEMBER 2011
ELECTRICAL CHARACTERISTICS: V_S = +1.8V to +5.5V or ±0.9V to ±2.75V
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, V_CM = V_S/2, V_OUT = V_S/2, and SHDN x = V_S+, unless otherwise noted.
OPA320, OPA320S, OPA2320, OPA2320S
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
OFFSET VOLTAGE
Input offset voltage
vs Temperature
vs Power supply
Over temperature
Channel separation
V_OS
dV_OS/dT
PSR
V_S = +5.5V
V_S = +1.8V to +5.5V
V_S = +1.8V to +5.5V
At 1kHz
40
150
1.5
5
5
20
15
130
INPUT VOLTAGE
Common-mode voltage range
Common-mode rejection ratio
Over temperature
V_CM
(V–) – 0.1
(V+) + 0.1
CMRR V_S = 5.5V, (V–) – 0.1V < V_CM < (V+) + 0.1V
100
114
96
INPUT BIAS CURRENT
Input bias current
Over temperature
Input offset current
Over temperature
NOISE
I_B
T_A = –40°C to +85°C
OPA2320, OPA2320S, T_A = –40°C to +125°C
OPA320, OPA320S, 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
±0.9
±50
±400
±600
±0.2
±0.9
±50
±400
Input voltage noise
f = 0.1Hz to 10Hz
2.8
f = 1kHz
8.5
Input voltage noise density
e_n
f = 10kHz
7
Input current noise density
i_n
f = 1kHz
0.6
INPUT CAPACITANCE
Differential
5
Common-mode
4
OPEN-LOOP GAIN
Open-loop voltage gain
Phase margin
FREQUENCY RESPONSE
Gain bandwidth product
A_OL
PM
GBP
0.1V < V_O < (V+) – 0.1V, R_L = 10kΩ
0.1V < V_O < (V+) – 0.1V, R_L = 10kΩ
0.2V < V_O < (V+) – 0.2V, R_L = 2kΩ
0.2V < V_O < (V+) – 0.2V, R_L = 2kΩ
V_S = 5V, C_L = 50pF
V_S = 5.0V, C_L = 50pF
Unity gain
114
132
100
130
108
123
96
130
47
20
Slew rate
SR
G = +1
10
To 0.1%, 2V step, G = +1
0.25
Settling time
t_S
To 0.01%, 2V step, G = +1
To 0.0015%, 2V step, G = +1⁽¹⁾
0.32
0.5
Overload recovery time
Total harmonic distortion +
noise ⁽²⁾
THD+N
V_IN × G > V_S
V_O = 4V_PP, G = +1, f = 10kHz, R_L = 10kΩ
V_O = 2V_PP, G = +1, f = 10kHz, R_L = 600Ω
100
0.0005
0.0011
(1) Based on simulation.
(2) Third-order filter; bandwidth = 80kHz at –3dB.
UNIT
μV
μV/°C
μV/V
μV/V
dB
V
dB
dB
pA
pA
pA
pA
pA
pA
pA
μV_PP
nV/√Hz
nV/√Hz
fA/√Hz
pF
pF
dB
dB
dB
dB
Degrees
MHz
V/μs
μs
μs
μs
ns
%
%
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