Datasheet

3
LT1490/LT1491
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
e
n
Input Noise Voltage Density f = 1kHz 50 nV/√Hz
i
n
Input Noise Current Density f = 1kHz 0.03 pA/√Hz
R
IN
Input Resistance Differential 6 17 MΩ
Common Mode, V
CM
= 0V to 44V 4 11 MΩ
C
IN
Input Capacitance 4.6 pF
Input Voltage Range ● 044V
CMRR Common Mode Rejection Ratio V
CM
= 0V to V
CC
– 1V ● 84 98 dB
(Note 4) V
CM
= 0V to 44V ● 80 98 dB
A
VOL
Large-Signal Voltage Gain V
S
= 3V, V
O
= 500mV to 2.5V, R
L
= 10k 200 1500 V/mV
0°C ≤ T
A
≤ 70°C ● 133 V/mV
–40°C ≤ T
A
≤ 85°C ● 100 V/mV
V
S
= 5V, V
O
= 500mV to 4.5V, R
L
= 10k 400 1500 V/mV
0°C ≤ T
A
≤ 70°C ● 250 V/mV
–40°C ≤ T
A
≤ 85°C ● 200 V/mV
V
OL
Output Voltage Swing Low V
S
= 3V, No Load ● 22 50 mV
V
S
= 3V, I
SINK
= 5mA ● 250 450 mV
V
S
= 5V, No Load ● 22 50 mV
V
S
= 5V, I
SINK
= 5mA ● 250 500 mV
V
S
= 5V, I
SINK
= 10mA 330 500 mV
V
OH
Output Voltage Swing High V
S
= 3V, No Load ● 2.95 2.978 V
V
S
= 3V, I
SOURCE
= 5mA ● 2.55 2.6 V
V
S
= 5V, No Load ● 4.95 4.978 V
V
S
= 5V, I
SOURCE
= 10mA ● 4.30 4.6 V
I
SC
Short-Circuit Current (Note 2) V
S
= 3V, Short to GND 10 15 mA
V
S
= 3V, Short to V
CC
10 30 mA
V
S
= 5V, Short to GND 15 25 mA
V
S
= 5V, Short to V
CC
15 30 mA
PSRR Power Supply Rejection Ratio V
S
= 2.5V to 12.5V, V
CM
= V
O
= 1V ● 84 98 dB
Minimum Operating Supply Voltage ● 2 2.5 V
Reverse Supply Voltage I
S
= –100µA per Amplifier ● 18 27 V
I
S
Supply Current per Amplifier 40 50 µA
(Note 5)
● 55 µA
GBW Gain Bandwidth Product f = 1kHz 110 180 kHz
(Note 4) 0°C ≤ T
A
≤ 70°C ● 100 kHz
–40°C ≤ T
A
≤ 85°C ● 90 kHz
SR Slew Rate A
V
= –1, R
L
= ∞ 0.035 0.06 V/µs
(Note 6) 0°C ≤ T
A
≤ 70°C ● 0.031 V/µs
–40°C ≤ T
A
≤ 85°C ● 0.030 V/µs
ELECTRICAL CHARACTERISTICS
The ● denotes specifications which apply over the full operating temperature
range, otherwise specifications are at T
A
= 25°C. V
S
= 3V, 0V; V
S
= 5V, 0V; V
CM
= V
OUT
= half supply, unless otherwise noted. (Note 3)