LT1490A/LT1491A
7
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ELECTRICAL CHARACTERISTICS
The ● denotes specifications which apply over the full operating temperature
range of –40°C ≤ T
A
≤ 125°C. V
S
= ±15V, V
CM
= 0V, V
OUT
= 0V unless otherwise noted. (Note 4)
SYMBOL PARAMETER CONDITIONS
LT1490AH/LT1491AH
UNITSMIN TYP MAX
I
S
Supply Current per Amplifier (Note 7)
l
40 50
70
µA
µA
GBW Gain Bandwidth Product (Note 6) f = 1kHz
l
110
60
180 kHz
kHz
SR Slew Rate (Note 8) A
V
= –1, R
L
= ∞
l
0.035
0.015
0.06 V/µs
V/µs
V
OS
Input Offset Voltage (Note 5) LT1490AHS8
l
150 700
2700
µV
µV
LT1490AHMS8, LT1491AHS
l
250 1200
3200
µV
µV
Input Offset Voltage Drift (Note 9)
l
3 7 µV/°C
I
OS
Input Offset Current
l
2nA
I
B
Input Bias Current
l
20 nA
Input Voltage Range
l
–14.7 29 V
CMRR Common Mode Rejection Ratio V
CM
= –14.7V to 29V
l
72 dB
A
VOL
Large-Signal Voltage Gain V
O
= ±14V, R
L
= 10k
l
100
4
250 V/mV
V/mV
V
O
Output Voltage Swing No Load
I
OUT
= ±2.5mA
l
l
±14.8
±14.3
V
V
PSRR Power Supply Rejection Ratio V
S
= ±1.25V to ±22V
l
84 dB
I
S
Supply Current per Amplifier
l
50 70
95
µA
µA
GBW Gain Bandwidth Product f = 1kHz
l
125
75
200 kHz
kHz
SR Slew Rate A
V
= –1, R
L
= ∞
l
0.0375
0.02
0.07 V/µs
V/µs
Note 1: Stresses beyond those listed under Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to any Absolute
Maximum Rating condition for extended periods may affect device
reliability and lifetime.
Note 2: A heat sink may be required to keep the junction temperature
below absolute maximum. This depends on the power supply voltage and
how many amplifi ers are shorted. The θ
JA
specifi ed for the DD and DHC
package is with minimal PCB heat spreading metal. Using expanded metal
area on all layers of a board reduces this value.
Note 3: The LT1490AC/LT1491AC and LT1490AI/LT1491AI are guaranteed
functional over the operating temperature range of –40°C to 85°C.
The LT1490AH/LT1491AH are guaranteed functional over the operating
temperature range of –40°C to 125°C.
Note 4: The LT1490AC/LT1491AC are guaranteed to meet specifi ed
performance from 0°C to 70°C. The LT1490AC/LT1491AC are designed,
characterized and expected to meet specifi ed performance from
–40°C to 85°C but are not tested or QA sampled at these temperatures.
The LT1490AI/LT1491AI are guaranteed to meet specifi ed performance
from –40°C to 85°C. The LT1490AH/LT1491AH are guaranteed to meet
specifi ed performance from – 40°C to 125°C.
Note 5: ESD (electrostatic discharge) sensitive device. Extensive use
of ESD protection devices are used internal to the LT1490A/LT1491A.
However, high electrostatic discharge can damage or degrade the device.
Use proper ESD handling precautions.
Note 6: V
S
= 5V limits are guaranteed by correlation to V
S
= 3V and
V
S
= ±15V tests.
Note 7: V
S
= 3V limits are guaranteed by correlation to V
S
= 5V and
V
S
= ±15V tests.
Note 8: Guaranteed by correlation to slew rate at V
S
= ±15V and GBW
at V
S
= 3V and V
S
= ±15V tests.
Note 9: This parameter is not 100% tested.
