OPA2188 Datasheet, PDF (5/26 Pages) Texas Instruments – 0.03-μV/°C Drift, Low-Noise, Rail-to-Rail Output

OPA2188
www.ti.com
SBOS525B – AUGUST 2011 – REVISED SEPTEMBER 2012
ELECTRICAL CHARACTERISTICS:
Low-Voltage Operation, V_S = ±2 V to < ±4 V (V_S = +4 V to < +8 V)
At T_A = +25°C, R_L = 10 kΩ connected to V_S / 2, and V_COM = V_OUT = V_S / 2, unless otherwise noted.
OPA2188
PARAMETER
CONDITIONS
MIN
TYP
OFFSET VOLTAGE
V_OS
PSRR
Input offset voltage
Power-supply rejection ratio
Long-term stability
T_A = –40°C to +105°C
V_S = 4 V to 36 V, V_CM = V_S / 2
V_S = 4 V to 36 V, V_CM = V_S / 2,
T_A = –40°C to +105°C
6
0.03
0.075
4 ⁽¹⁾
Channel separation, dc
1
INPUT BIAS CURRENT
I_B
I_OS
NOISE
Input bias current
Input offset current
V_CM = V_S / 2
T_A = –40°C to +105°C
T_A = –40°C to +105°C
±160
±320
Input voltage noise
f = 0.1 Hz to 10 Hz
0.25
e_n
Input voltage noise density
f = 1 kHz
8.8
i_n
Input current noise density
f = 1 kHz
7
INPUT VOLTAGE RANGE
V_CM
Common-mode voltage range
CMRR
Common-mode rejection ratio
INPUT IMPEDANCE
T_A = –40°C to +105°C
(V–) < V_CM < (V+) – 1.5 V
(V–) + 0.5 V < V_CM < (V+) – 1.5 V,
V_S = ±2 V
(V–) + 0.5 V < V_CM < (V+) – 1.5 V,
V_S = ±2 V, T_A = –40°C to +105°C
V–
106
114
114
120
110
120
Differential
100 || 6
Common-mode
6 || 95
OPEN-LOOP GAIN
A_OL
Open-loop voltage gain
FREQUENCY RESPONSE
(V–) + 500 mV < V_O < (V+) – 500 mV,
R_L = 5 kΩ, V_S = 5 V
(V–) + 500 mV < V_O < (V+) – 500 mV,
R_L = 10 kΩ
(V–) + 500 mV < V_O < (V+) – 500 mV,
R_L = 10 kΩ, T_A = –40°C to +105°C
110
120
120
130
114
120
GBW
Gain-bandwidth product
2
SR
Slew rate
G = +1
0.8
THD+N
Overload recovery time
Total harmonic distortion + noise
V_IN × G = V_S
1 kHz, G = 1, V_OUT = 1 V_RMS
1
0.0001
MAX
UNIT
25
0.085
0.3
0.3
μV
μV/°C
μV/V
μV/V
μV
μV/V
±850
pA
±4
nA
±1700
pA
±2
nA
μV_PP
nV/Hz
fA/Hz
(V+) – 1.5
V
dB
dB
dB
MΩ || pF
10¹² Ω || pF
dB
dB
dB
MHz
V/μs
μs
%
(1) 1000-hour life test at +125°C demonstrated randomly distributed variation in the range of measurement limits—approximately 4 μV.
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