Datasheet

4
LT1490A/LT1491A
sn1490, 14901afbs
LT1490AC/LT1491AC
LT1490AI/LT1491AI
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
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 7)
● 55 µA
GBW Gain Bandwidth Product f = 1kHz 110 180 kHz
(Note 6) 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 8) 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 of –40°C ≤ T
A
≤ 85°C, 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 4)
LT1490AC/LT1491AC
LT1490AI/LT1491AI
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
V
OS
Input Offset Voltage (Note 5) LT1490A N, S Packages 150 700 µV
0°C ≤ T
A
≤ 70°C ● 950 µV
–40°C ≤ T
A
≤ 85°C ● 1100 µV
LT1490A MS8 Package, LT1491A N, S Packages 250 1200 µV
0°C ≤ T
A
≤ 70°C ● 1350 µV
–40°C ≤ T
A
≤ 85°C ● 1500 µV
LT1490A DD, LT1491A DHC 285 1400 µV
0°C ≤ T
A
≤ 70°C ● 1550 µV
–40°C ≤ T
A
≤ 85°C ● 1700 µV
Input Offset Voltage Drift (Note 9) – 40°C ≤ T
A
≤ 85°C ● 26 µV/°C
LT1490A DD, LT1491A DHC, –40°C ≤ T
A
≤ 85°C ● 27 µV/°C
I
OS
Input Offset Current ● 0.2 0.8 nA
I
B
Input Bias Current ● 18 nA
Input Bias Current Drift – 40°C ≤ T
A
≤ 85°C ● 5 pA/°C
Input Noise Voltage 0.1Hz to 10Hz 1 µV
P-P
e
n
Input Noise Voltage Density f = 1kHz 50 nV/√Hz
i
n
Input Noise Current Density f = 1kHz 0.015 pA/√Hz
R
IN
Input Resistance Differential 6 17 MΩ
Common Mode, V
CM
= –15V to 14V 15000 MΩ
C
IN
Input Capacitance 4.6 pF
Input Voltage Range ● –15 29 V
CMRR Common Mode Rejection Ratio V
CM
= – 15V to 29V ● 80 98 dB
A
VOL
Large-Signal Voltage Gain V
O
= ±14V, R
L
= 10k 100 250 V/mV
0°C ≤ T
A
≤ 70°C ● 75 V/mV
–40°C ≤ T
A
≤ 85°C ● 50 V/mV
V
O
Output Voltage Swing No Load ● ±14.9 ±14.978 V
I
OUT
= ±5mA ● ±14.5 ±14.750 V
I
OUT
= ±10mA ±14.5 ± 14.670 V
The ● denotes specifications which apply over the full operating temperature range of –40°C ≤ T
A
≤ 85°C, otherwise specifications are
at T
A
= 25°C. V
S
= ±15V; V
CM
= 0V, V
OUT
= 0V unless otherwise noted. (Note 4)