Datasheet

4
LT1490/LT1491
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
Input Offset Voltage Drift 0°C ≤ T
A
≤ 70°C (Note 6) ● 36 µV/°C
I
OS
Input Offset Current ● 0.2 0.8 nA
I
B
Input Bias Current ● 48 nA
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 0.03 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
I
SC
Short-Circuit Current (Note 1) Short to GND ±20 ±25 mA
0°C ≤ T
A
≤ 70°C ● ±15 mA
–40°C ≤ T
A
≤ 85°C ● ±10 mA
PSRR Power Supply Rejection Ratio V
S
= ±1.25V to ±22V ● 88 98 dB
I
S
Supply Current per Amplifier 50 70 µA
● 85 µA
GBW Gain Bandwidth Product f = 1kHz 125 200 kHz
0°C ≤ T
A
≤ 70°C ● 110 kHz
–40°C ≤ T
A
≤ 85°C ● 100 kHz
SR Slew Rate A
V
= –1, R
L
= ∞, V
O
= ±10V, 0.0375 0.07 V/µs
Measure at V
O
= ±5V
0°C ≤ T
A
≤ 70°C ● 0.0330 V/µs
–40°C ≤ T
A
≤ 85°C ● 0.0300 V/µs
V
S
= ± 15V, V
CM
= 0V, V
OUT
= 0V, T
A
= 25 ° C, unless otherwise noted. (Note 2)
ELECTRICAL CHARACTERISTICS
The ● denotes specifications which apply over the full operating
temperature range.
Note 1: A heat sink may be required to keep the junction temperature
below absolute maximum. This depends on the power supply voltage
and how many amplifiers are shorted.
Note 2: The LT1490/LT1491 are designed, characterized and expected
to meet these extended temperature limits, but are not tested at –40°C
and 85°C. Guaranteed I grade parts are available, consult factory.
Note 3: V
S
= 5V limits are guaranteed by correlation to V
S
= 3V and
V
S
= ±15V tests.
Note 4: V
S
= 3V limits are guaranteed by correlation to V
S
= 5V and
V
S
= ±15V tests.
Note 5: Guaranteed by correlation to slew rate at V
S
= ±15V and GBW
at V
S
= 3V and V
S
= ±15V tests.
Note 6: This parameter is not 100% tested.