OPA2320-Q1_15 Datasheet, PDF (5/31 Pages) Texas Instruments – Precision, 20-MHz, 0.9-pA, Low-Noise, RRIO,CMOS Operational Amplifier

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OPA2320-Q1
SLOS884 – SEPTEMBER 2014
6.5 Electrical Characteristics:
V_S = 1.8 to 5.5 V or ±0.9 V to ±2.75 V. At T_A = 25°C, R_(L) = 10 kΩ connected to V_S / 2, V_(CM) = V_S / 2, V_O = V_S / 2, unless
otherwise noted.
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX UNIT
OFFSET VOLTAGE
V_IO
Input offset voltage
Input offset voltage versus
temperature
V_S = 5.5 V, T_A = –40°C to 125°C
40
150 µV
1.5
5 µV/°C
Input offset voltage versus power
supply
Input offset-voltage channel
separation
V_S = 1.8 to 5.5 V
V_S = 1.8 to 5.5 V, T_A = –40°C to 125°C
At 1 kHz
5
20 µV/V
15
130
dB
INPUT VOLTAGE
V_(CM)
Common-mode voltage range
V_(V–) – 0.1
V_(V+) +
0.1
V
CMRR
Common-mode rejection ratio
V_S = 5.5 V, V_(V–) – 0.1 V < V_(CM) < V_(V+) + 0.1 V
100
114
dB
Common-mode rejection ratio,
over temperature
V_S = 5.5 V, V_(V–) – 0.1 V < V_(CM) < V_(V+) + 0.1 V, T_A = –40°C to
125°C
96
dB
INPUT BIAS CURRENT
I_IB
I_IO
NOISE
Input bias current
Input bias current, over
temperature
Input offset current
Input offset current, over
temperature
T_A = –40°C to 85°C
T_A = –40°C to 125°C
T_A = –40°C to 85°C
T_A = –40°C to 125°C
±0.2
±0.9 pA
±50 pA
±400 pA
±0.2
±0.9 pA
±50 pA
±400 pA
V_I(n)
Input voltage noise
ƒ = 0.1 to 10 Hz
Input voltage noise density
ƒ = 1 kHz
ƒ = 10 kHz
2.8
µV_PP
8.5
nV/vHz
7
nV/vHz
Input current noise density
ƒ = 1 kHz
0.6
fA/vHz
INPUT CAPACITANCE
Differential
5
pF
Common-mode
4
pF
OPEN-LOOP GAIN
0.1 V < V_O < V_(V+) – 0.1 V, R_(L) = 10 kΩ
A_(OL)
Open-loop voltage gain
0.1 V < V_O < V_(V+) – 0.1 V, R_(L) = 10 kΩ, T_A = –40°C to 125°C
0.2 V < V_O < V_(V+) – 0.2 V, R_(L) = 2 kΩ
0.2 V < V_O < V_(V+) – 0.2 V, R_(L) = 2 kΩ, T_A = –40°C to 125°C
PM
Phase margin
V_S = 5 V, C_(L) = 50 pF
FREQUENCY RESPONSE, V_S = 5 V, C_(L) = 50 pF
GBP
Gain bandwidth product
Unity gain
114
132
100
130
108
123
96
130
47
20
dB
dB
dB
dB
°
MHz
SR
Slew rate
G=1
10
V/µs
To 0.1%, 2-V step, G = 1
0.25
t_s
Settling time
To 0.01%, 2-V step, G = 1
To 0.0015%, 2-V step, G = 1⁽¹⁾
0.32
µs
0.5
THD+N
Overload recovery time
Total harmonic distortion +
noise ⁽²⁾
V_I × G > V_S
V_O = 4 V_PP, G = 1, ƒ = 10 kHz, R_(L) = 10 kΩ
V_O = 4 V_PP, G = 1, ƒ = 10 kHz, R_(L) = 600 kΩ
100
ns
0.0005%
0.0011%
(1) Based on simulation.
(2) Third-order filter; bandwidth = 80 kHz at –3 dB.
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