LT1677 Datasheet, PDF (1/16 Pages) Linear Technology – Low Noise, Rail-to-Rail Precision Op Amp

FEATURES
s _{Rail-to-Rail Input and Output}
s _{100% Tested Low Voltage Noise:}
3.2nV/√Hz Typ at 1kHz
4.5nV/√Hz Max at 1kHz
s _{Offset Voltage: 60µV Max}
s _{Low VOS Drift: 0.2µV/°C Typ}
s _{Low Input Bias Current: 20nA Max}
s _{Wide Supply Range: 3V to ±15V}
s _{High AVOL: 4V/µV Min, RL = 1k}
s _{High CMRR: 109dB Min}
s _{High PSRR: 108dB Min}
s _{Gain Bandwidth Product: 7.2MHz}
s _{Slew Rate: 2.5V/µs}
s _{Operating Temperature Range: – 40°C to 85°C}
U
APPLICATIO S
s _{Low Noise Signal Processing}
s _{Microvolt Accuracy Threshold Detection}
s _{Strain Gauge Amplifiers}
s _{Tape Head Preamplifiers}
s _{Direct Coupled Audio Gain Stages}
s _{Infrared Detectors}
Final Electrical Specifications
LT1677
Low Noise, Rail-to-Rail
Precision Op Amp
February 2000
DESCRIPTIO
The LT^®1677 features the lowest noise performance avail-
able for a rail-to-rail operational amplifier: 3.2nV/√Hz
wideband noise, 1/f corner frequency of 13Hz and 70nV
peak-to-peak 0.1Hz to 10Hz noise. Low noise is combined
with outstanding precision: 20µV offset voltage and
0.2µV/°C drift, 130dB common mode and power supply
rejection and 7.2MHz gain bandwidth product. The com-
mon mode range exceeds the power supply by 100mV.
The voltage gain of the LT1677 is extremely high, especially
with a single supply: 20 million driving a 1k load.
In the design, processing and testing of the device, particular
attention has been paid to the optimization of the entire
distribution of several key parameters. Consequently, the
specifications of even the lowest cost grade have been
spectacularly improved compared to competing rail-to-rail
amplifiers.
, LTC and LT are registered trademarks of Linear Technology Corporation.
TYPICAL APPLICATIO
Precision High Side Current Sense
SOURCE
R_IN
1k
R_LINE
0.1Ω
LOAD
2– ₇
LT1677
3+
6
ZETEX
BC856B
4
V_OUT
R_OUT
20k
V_OUT
I_LOAD
=
R_LINE
R_OUT
R_IN
1677 TA01
= 2V/AMP
Information furnished by Linear Technology Corporation is believed to be accurate and reliable.
However, no responsibility is assumed for its use. Linear Technology Corporation makes no represen-
tation that the interconnection of its circuits as described herein will not infringe on existing patent rights.
1