Datasheet

3
LT1677
1677fa
SYMBOL PARAMETER CONDITIONS (Note 6) MIN TYP MAX UNITS
e
n
Input Noise Voltage 0.1Hz to 10Hz (Note 7) 90 nV
P-P
V
CM
= V
S
180 nV
P-P
V
CM
= 0V 600 nV
P-P
Input Noise Voltage Density (Note 8) f
O
= 10Hz 5.2 nV/√Hz
V
CM
= V
S
, f
O
= 10Hz 7 nV/√Hz
V
CM
= 0V, f
O
= 10Hz 25 nV/√Hz
f
O
= 1kHz 3.2 4.5 nV/√Hz
V
CM
= V
S
, f
O
= 1kHz 5.3 nV/√Hz
V
CM
= 0V, f
O
= 1kHz 17 nV/√Hz
i
n
Input Noise Current Density f
O
= 10Hz 1.2 pA/√Hz
f
O
= 1kHz 0.3 pA/√Hz
V
CM
Input Voltage Range –0.1 V
S
+ 0.1V V
0°C ≤ T
A
≤ 70°C ● 0V
S
– 0.2V V
–40°C ≤ T
A
≤ 85°C ● 0V
S
– 0.3V V
R
IN
Input Resistance Common Mode 2 GΩ
C
IN
Input Capacitance 4.2 pF
CMRR Common Mode Rejection Ratio (Note 11) V
S
= 3V
V
CM
= –0.1V to 3.1V 55 68 dB
V
CM
= 0V to 2.7V ● 53 67 dB
V
S
= 5V
V
CM
= –0.1V to 5.1V 60 73 dB
V
CM
= 0V to 4.7V ● 58 72 dB
PSRR Power Supply Rejection Ratio V
S
= 2.7V to 40V, V
CM
= V
O
= 1.7V 108 125 dB
V
S
= 3.1V to 40V, V
CM
= V
O
= 1.7V ● 105 120 dB
A
VOL
Large-Signal Voltage Gain V
S
= 3V, R
L
≥ 10k, V
O
= 2.5V to 0.7V 0.6 4 V/µV
0°C ≤ T
A
≤ 70°C ● 0.4 3 V/µV
–40°C ≤ T
A
≤ 85°C ● 0.4 3 V/µV
V
S
= 3V, R
L
≥ 2k, V
O
= 2.2V to 0.7V 0.5 1 V/µV
0°C ≤ T
A
≤ 70°C ● 0.4 0.9 V/µV
–40°C ≤ T
A
≤ 85°C ● 0.4 0.8 V/µV
V
S
= 3V, R
L
≥ 600Ω, V
O
= 2.2V to 0.7V 0.20 0.43 V/µV
0°C ≤ T
A
≤ 70°C ● 0.15 0.40 V/µV
–40°C ≤ T
A
≤ 85°C ● 0.10 0.35 V/µV
V
S
= 5V, R
L
≥ 10k, V
O
= 4.5V to 0.7V 0.8 5 V/µV
0°C ≤ T
A
≤ 70°C ● 0.7 4 V/µV
–40°C ≤ T
A
≤ 85°C ● 0.7 4 V/µV
V
S
= 5V, R
L
≥ 2k, V
O
= 4.2V to 0.7V 0.40 0.9 V/µV
0°C ≤ T
A
≤ 70°C ● 0.35 0.8 V/µV
–40°C ≤ T
A
≤ 85°C ● 0.25 0.6 V/µV
V
S
= 5V, R
L
≥ 600Ω, V
O
= 4.2V to 0.7V 0.35 0.67 V/µV
0°C ≤ T
A
≤ 70°C ● 0.30 0.60 V/µV
–40°C ≤ T
A
≤ 85°C ● 0.20 0.45 V/µV
The ● denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. V
S
= 3V, V
CM
= V
O
= 1.7V; V
S
= 5V, V
CM
= V
O
= 2.5V unless
otherwise noted.
ELECTRICAL CHARACTERISTICS
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