LT1881(RevA) 查看數據表（PDF） - Linear Technology
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LT1881
(Rev.:RevA)
(Rev.:RevA)
Linear Technology
LT1881 Datasheet PDF : 16 Pages
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LT1881/LT1882
ELECTRICAL CHARACTERISTICS
The ● denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C.
Single supply operation VS = 5V, 0V; VCM = VS/2 unless otherwise noted. (Note 5)
SYMBOL PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
IB
Input Bias Current (LT1881A)
0°C < TA < 70°C
– 40°C < TA < 85°C
Input Bias Current (LT1881/LT1882)
0°C < TA < 70°C
– 40°C < TA < 85°C
Input Noise Voltage
0.1Hz to 10Hz
en
Input Noise Voltage Density
in
Input Noise Current Density
RIN
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
μVP-P
14
nV/√Hz
0.03
pA/√Hz
●
20
MΩ
●
100
GΩ
CIN
Input Capacitance
VCM
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 < VCM < 4V
106
128
dB
1.2V < VCM < 3.8V
●
104
dB
PSRR
Power Supply Rejection Ratio
V– = 0V, VCM = 1.5V
0°C < TA < 85°C, 2.7V < V+ < 32V
●
106
132
dB
TA = –40°C, 3V < V+ < 32V
106
132
dB
Minimum Operating Supply Voltage
●
2.4
2.7
V
AVOL
Large-Signal Voltage Gain
RL = 10k; 1V < VOUT < 4V
500
1600
●
350
V/mV
V/mV
RL = 2k; 1V < VOUT < 4V
300
800
●
250
V/mV
V/mV
RL = 1k; 1V < VOUT < 4V
250
400
●
200
V/mV
V/mV
VOL
Output Voltage Swing Low
VOH
Output Voltage Swing High
(Referred to V+)
IS
Supply Current Per Amplifier
No Load
ISINK = 100μA
ISINK = 1mA
ISINK = 5mA
No Load
ISOURCE = 100μA
ISOURCE = 1mA
ISOURCE = 5mA
VS = 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
VS = 5V, 0V
0.5
0.65
0.9
mA
●
1.4
mA
VS = 12V, 0V
0.5
0.70
1.0
mA
●
1.5
mA
ISC
Short-Circuit Current
GBW
Gain Bandwidth Product
VOUT Short to GND
VOUT Short to V+
f = 20kHz
●
15
30
mA
●
15
30
mA
0.35
1.0
MHz
Channel Separation
f = 1kHz
120
dB
tS
Settling Time
0.01%, VOUT = 1.5V to 3.5V,
AV = –1, RL = 2k
30
μs
18812fa
3
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