LT1102_07 Datasheet, PDF (1/12 Pages) Linear Technology – High Speed, Precision, JFET Input Instrumentation Amplifier (Fixed Gain = 10 or 100)

LT1102
High Speed, Precision,
JFET Input Instrumentation Amplifier
(Fixed Gain = 10 or 100)
FEATURES
■ _{Slew Rate: 30V/μs}
■ _{Gain-Bandwidth Product: 35MHz}
■ _{Settling Time (0.01%): 3μs}
■ _{Overdrive Recovery: 0.4μs}
■ _{Gain Error: 0.05% Max}
■ _{Gain Drift: 5ppm/°C}
■ _{Gain Nonlinearity: 16ppm Max}
■ _{Offset Voltage (Input + Output): 600μV Max}
– Drift with Temperature: 2μV/°C
■ _{Input Bias Current: 40pA Max}
■ _{Input Offset Current: 40pA Max}
– Drift with Temperature (to 70°C): 0.5pA/°C
U
APPLICATIO S
■ _{Fast Settling Analog Signal Processing}
■ _{Multiplexed Input Data Acquisition Systems}
■ _{High Source Impedance Signal Amplification from}
High Resistance Bridges, Capacitance Sensors,
Photodetector Sensors
■ _{Bridge Amplifier with < 1Hz Lowpass Filtering}
DESCRIPTIO
The LT^®1102 is the first fast FET input instrumentation
amplifier offered in the low cost, space saving 8-pin
packages. Fixed gains of 10 and 100 are provided with
excellent gain accuracy (0.01%) and non-linearity (3ppm).
No external gain setting resistor is required.
Slew rate, settling time, gain-bandwidth product,
overdrive recovery time are all improved compared to
competitive high speed instrumentation amplifiers.
Industry best speed performance is combined with
impressive precision specifications: less than 10pA input
bias and offset currents, 180μV offset voltage. Unlike
other FET input instrumentation amplifiers, on the LT1102
there is no output offset voltage contribution to total error,
and input bias currents do not double with every 10°C rise
in temperature. Indeed, at 70°C ambient temperature the
input bias current is only 40pA.
, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.
TYPICAL APPLICATIO
Wideband Instrumentation Amplifier
with ±150mA Output Current
V⁺ = 15V
5
6₊
7
8
LT1102
3_–
4
2
1
R
BIAS
LT1010
OUT
V ^– = – 15V
OUTPUT = ± 10V INTO 75Ω TO 330kHz (R = 50Ω)
± 10V INTO 200Ω TO 330kHz (R = 200Ω)
DRIVES 2.2nF CAP LOAD
GAIN = 10, DEGRADED 0.01% DUE TO LT1010
LT1102 • TA01
Slew Rate
FPO
G = 10
0.5μs/DIV
FPOLT1102 • TA02
1102fb
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