Datasheet

3
LT1457
GBW Gain-Bandwidth Product (Note 5) 1.0 1.7 1.0 1.7 MHz
I
S
Supply Current Per Amplifier 1.8 3.0 1.8 3.0 mA
Channel Separation DC to 5kHz, V
IN
= ±10V 132 130 dB
LT1457AC LT1457C/LT1457S8
SYMBOL PARAMETER CONDITIONS MIN TYP MAX MIN TYP MAX UNITS
V
S
= ±15V, T
A
= 25°C,V
CM
= 0V unless otherwise noted. (Note 1)
ELECTRICAL CHARACTERISTICS
V
S
= ±15V, V
CM
= 0V, 0°C ≤ T
A
≤ 70°C, unless otherwise noted.
ELECTRICAL CHARACTERISTICS
LT1457AC LT1457C/LT1457S8
SYMBOL PARAMETER CONDITIONS MIN TYP MAX MIN TYP MAX UNITS
V
OS
Input Offset Voltage LT1457AC/C ● 350 1100 400 1800 µV
LT1457S8 ● 500 2300 µV
Average Temperature Coefficient of ● 310 416 µV/°C
Input Offset Voltage
I
OS
Input Offset Current Warmed Up, T
A
= 85°C 0.1 0.5 0.1 0.6 nA
I
B
Input Bias Current Warmed Up, T
A
= 85°C ±0.2 ±0.7 ±0.2 ±0.9 nA
A
VOL
Large-Signal Voltage Gain V
O
= ±10V, R
L
= 2k ● 40 120 30 110 V/mV
CMRR Common-Mode Rejection Ratio V
CM
= ±10.4V ● 84 97 80 95 dB
PSRR Power Supply Rejection Ratio V
S
= ±5V to ±17V ● 86 100 83 98 dB
V
OUT
Output Voltage Swing R
L
= 2k ● ±12 ±12.7 ±12 ±12.6 V
I
S
Supply Current Per Amplifier T
A
= – 40°C 3.8 3.8 mA
T
A
= 85°C 1.7 1.7 mA
V
S
= ±15V, V
CM
= 0V, –40°C ≤ T
A
≤ 85°C, unless otherwise noted. (Note 6)
ELECTRICAL CHARACTERISTICS
The ● denotes the specifications which apply over the full operating
temperature range.
Note 1: Typical parameters are defined as the 60% yield of distributions of
individual amplifiers; i.e., out of 100 LT1457s (200 op amps) typically 120
will be better than the indicated specification.
Note 2: This parameter is tested on a sample basis only.
Note 3: Current noise is calculated from the formula: i
n
= (2qI
b
)
1/2
, where
q = 1.6 x 10
–19
coulomb. The noise of source resistors up to 1GΩ
swamps the contribution of current noise.
Note 4: This parameter is not 100% tested.
Note 5: Gain-Bandwidth product is not tested. It is guaranteed by design
and by inference from the slew rate measurement.
Note 6: The LT1457 is not tested and not quality-assurance-sampled at
–40°C and at 85°C. These specifications are guaranteed by design,
correlation, and/or inference from 0°C, 25°C, and 70°C tests.
LT1457AC LT1457C/LT1457S8
SYMBOL PARAMETER CONDITIONS MIN TYP MAX MIN TYP MAX UNITS
V
OS
Input Offset Voltage LT1457AC/C ● 250 900 330 1500 µV
LT1457S8 ● 400 1900 µV
Average Temperature Coefficient of ● 310 416 µV/°C
Input Offset Voltage (Note 4)
I
OS
Input Offset Current Warmed Up, T
A
= 70°C 18 150 20 250 pA
I
B
Input Bias Current Warmed Up, T
A
= 70°C ±50 ±250 ±60 ±350 pA
A
VOL
Large-Signal Voltage Gain V
O
= ±10V, R
L
= 2k ● 70 220 50 200 V/mV
CMRR Common-Mode Rejection Ratio V
CM
= ±10.4V ● 85 98 80 96 dB
PSRR Power Supply Rejection Ratio V
S
= ±4.5V to ±18V ● 87 102 84 100 dB
V
OUT
Output Voltage Swing R
L
= 2k ● ±12 ±12.8 ±12 ±12.8 V
I
S
Supply Current Per Amplifier ● 3.2 3.2 mA
T
A
= 70°C 1.7 1.7 mA