LT1491A View Datasheet(PDF) - Linear Technology
Part Name
Description
MFG CO.
'LT1491A' PDF : 16 Pages View PDF
LT1490A/LT1491A
ELECTRICAL CHARACTERISTICS The ● denotes specifications which apply over the full operating temperature
range of – 40°C ≤ TA ≤ 125°C. VS = ±15V, VCM = 0V, VOUT = 0V unless otherwise noted. (Note 4)
SYMBOL PARAMETER
CONDITIONS
LT1490AH/LT1491AH
MIN
TYP
MAX
UNITS
IS
Supply Current per Amplifier (Note 7)
40
50
μA
l
70
μA
GBW
Gain Bandwidth Product (Note 6)
f = 1kHz
110
180
kHz
l 60
kHz
SR
Slew Rate (Note 8)
AV = –1, RL = ∞
0.035 0.06
V/μs
l 0.015
V/μs
VOS
Input Offset Voltage (Note 5)
LT1490AHS8
150
700
μV
l
2700
μV
LT1490AHMS8, LT1491AHS
250
1200
μV
l
3200
μV
Input Offset Voltage Drift (Note 9)
l
3
7
μV/°C
IOS
Input Offset Current
IB
Input Bias Current
Input Voltage Range
l
l
l –14.7
2
nA
20
nA
29
V
CMRR
AVOL
Common Mode Rejection Ratio
Large-Signal Voltage Gain
VCM = –14.7V to 29V
VO = ±14V, RL = 10k
l 72
100
250
l
4
dB
V/mV
V/mV
VO
PSRR
IS
Output Voltage Swing
Power Supply Rejection Ratio
Supply Current per Amplifier
No Load
IOUT = ±2.5mA
VS = ±1.25V to ±22V
l ±14.8
V
l ±14.3
V
l 84
dB
50
70
μA
l
95
μA
GBW
Gain Bandwidth Product
f = 1kHz
125
200
kHz
l 75
kHz
SR
Slew Rate
AV = –1, RL = ∞
0.0375 0.07
V/μs
l 0.02
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 amplifiers are shorted. The θJA specified 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 specified
performance from 0°C to 70°C. The LT1490AC/LT1491AC are designed,
characterized and expected to meet specified performance from
–40°C to 85°C but are not tested or QA sampled at these temperatures.
The LT1490AI/LT1491AI are guaranteed to meet specified performance
from –40°C to 85°C. The LT1490AH/LT1491AH are guaranteed to meet
specified 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: VS = 5V limits are guaranteed by correlation to VS = 3V and
VS = ±15V tests.
Note 7: VS = 3V limits are guaranteed by correlation to VS = 5V and
VS = ±15V tests.
Note 8: Guaranteed by correlation to slew rate at VS = ±15V and GBW
at VS = 3V and VS = ±15V tests.
Note 9: This parameter is not 100% tested.
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