LT1881_1 Datasheet, PDF (3/16 Pages) Linear Technology – Dual and Quad Rail-to-Rail Output, Picoamp Input Precision Op Amps

LT1881/LT1882
ELECTRICAL CHARACTERISTICS
The ● denotes the specifications which apply over the full operating temperature range, otherwise specifications are at T_A = 25°C.
Single supply operation V_S = 5V, 0V; V_CM = V_S/2 unless otherwise noted. (Note 5)
SYMBOL PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
I_B
Input Bias Current (LT1881A)
0°C < T_A < 70°C
– 40°C < T_A < 85°C
Input Bias Current (LT1881/LT1882)
0°C < T_A < 70°C
– 40°C < T_A < 85°C
Input Noise Voltage
0.1Hz to 10Hz
e_n
Input Noise Voltage Density
i_n
Input Noise Current Density
R_IN
Input Resistance
f = 1kHz
f = 1kHz
Differential Mode
Common Mode
100
200
pA
●
250
pA
●
300
pA
150
500
pA
●
600
pA
●
700
pA
0.5
μV_P-P
14
nV/√Hz
0.03
pA/√Hz
●
20
MΩ
●
100
GΩ
C_IN
Input Capacitance
V_CM
Input Voltage Range
●
2
pF
V^– + 1.0
● V^– + 1.2
V⁺ – 1.0
V
V⁺ – 1.2
V
CMRR
Common Mode Rejection Ratio
1V < V_CM < 4V
106
128
dB
1.2V < V_CM < 3.8V
●
104
dB
PSRR
Power Supply Rejection Ratio
V^– = 0V, V_CM = 1.5V
0°C < T_A < 85°C, 2.7V < V⁺ < 32V
●
106
132
dB
T_A = –40°C, 3V < V⁺ < 32V
106
132
dB
Minimum Operating Supply Voltage
●
2.4
2.7
V
A_VOL
Large-Signal Voltage Gain
R_L = 10k; 1V < V_OUT < 4V
500
1600
●
350
V/mV
V/mV
R_L = 2k; 1V < V_OUT < 4V
300
800
●
250
V/mV
V/mV
R_L = 1k; 1V < V_OUT < 4V
250
400
●
200
V/mV
V/mV
V_OL
Output Voltage Swing Low
V_OH
Output Voltage Swing High
(Referred to V⁺)
I_S
Supply Current Per Amplifier
No Load
I_SINK = 100μA
I_SINK = 1mA
I_SINK = 5mA
No Load
I_SOURCE = 100μA
I_SOURCE = 1mA
I_SOURCE = 5mA
V_S = 3V, 0V
●
20
40
mV
●
25
50
mV
●
70
150
mV
●
270
600
mV
●
120
220
mV
●
130
230
mV
●
180
300
mV
●
360
600
mV
0.45
0.65
0.85
mA
●
1.2
mA
V_S = 5V, 0V
0.5
0.65
0.9
mA
●
1.4
mA
V_S = 12V, 0V
0.5
0.70
1.0
mA
●
1.5
mA
I_SC
Short-Circuit Current
GBW
Gain Bandwidth Product
V_OUT Short to GND
V_OUT Short to V⁺
f = 20kHz
●
15
30
mA
●
15
30
mA
0.35
1.0
MHz
Channel Separation
f = 1kHz
120
dB
t_S
Settling Time
0.01%, V_OUT = 1.5V to 3.5V,
A_V = –1, R_L = 2k
30
μs
18812fa
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