Datasheet

LT1678/LT1679
3
sn16789 16789fs
SYMBOL PARAMETER CONDITIONS (Note 6) MIN TYP MAX UNITS
I
OS
Input Offset Current (Note 11) 4 25 nA
0°C ≤ T
A
≤ 70°C ● 535 nA
–40°C ≤ T
A
≤ 85°C ● 855 nA
V
S
= 5V, V
CM
= V
S
+ 0.1V 6 30 nA
V
S
= 5V, V
CM
= V
S
– 0.3V, 0°C ≤ T
A
≤ 70°C ● 10 40 nA
V
S
= 5V, V
CM
= V
S
– 0.3V, –40°C ≤ T
A
≤ 85°C ● 15 65 nA
V
S
= 5V, V
CM
= –0.1V 0.1 1.6 µA
V
S
= 5V, V
CM
= 0V, 0°C ≤ T
A
≤ 70°C ● 0.1 2.0 µA
V
S
= 5V, V
CM
= 0V, –40°C ≤ T
A
≤ 85°C ● 0.15 2.4 µA
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 1600 nV
P-P
Input Noise Voltage Density (Note 8) f
O
= 10Hz 4.4 nV/√Hz
V
CM
= V
S
, f
O
= 10Hz 6.6 nV/√Hz
V
CM
= 0V, f
O
= 10Hz 19 nV/√Hz
f
O
= 1kHz 3.9 5.5 nV/√Hz
V
CM
= V
S
, f
O
= 1kHz 5.3 nV/√Hz
V
CM
= 0V, f
O
= 1kHz 9 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
● 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 V
S
= 5V, V
CM
= 1.9V to 3.9V 98 120 dB
V
S
= 5V, V
CM
= 1.9V to 3.9V ● 92 120 dB
PSRR Power Supply Rejection Ratio V
S
= 2.7V to 36V, V
CM
= V
O
= 1.7V 100 125 dB
V
S
= 3.1V to 36V, V
CM
= V
O
= 1.7V ● 98 120 dB
A
VOL
Large-Signal Voltage Gain V
S
= 3V, R
L
= 10k, V
O
= 2.5V to 0.7V 0.6 3 V/µV
● 0.3 2 V/µV
V
S
= 3V, R
L
= 2k, V
O
= 2.2V to 0.7V 0.5 3 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 1 3.8 V/µV
O°C < T
A
< 70°C ● 0.6 2 V/µV
–40 < T
A
< 85°C ● 0.3 2 V/µV
V
S
= 5V, R
L
= 2k, V
O
= 4.2V to 0.7V 0.7 3.5 V/µV
0°C ≤ T
A
≤ 70°C ● 0.6 3.2 V/µV
–40°C ≤ T
A
≤ 85°C ● 0.5 3.0 V/µV
V
S
= 5V, R
L
= 600Ω, V
O
= 4.2V to 0.7V 0.6 3.0 V/µV
0°C ≤ T
A
≤ 70°C ● 0.5 2.8 V/µV
–40°C ≤ T
A
≤ 85°C ● 0.4 2.5 V/µV
V
OL
Output Voltage Swing Low (Note 11) Above GND
I
SINK
= 0.1mA 80 170 mV
0°C ≤ T
A
≤ 70°C ● 125 200 mV
– 40°C ≤ T
A
≤ 85°C ● 130 250 mV
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