LT1127_15 Datasheet, PDF (1/12 Pages) Linear Technology – Dual/Quad Decompensated Low Noise, High Speed Precision Op Amps

LT1126/LT1127
Dual/Quad
Decompensated Low Noise,
High Speed Precision Op Amps
FEATURES
■ _{100% Tested Low Voltage Noise: 2.7nV/√Hz Typ,}
4.2nV/√Hz Max
■ _{Slew Rate: 11V/µs Typ}
■ _{Gain-Bandwidth Product: 65MHz Typ}
■ _{Offset Voltage, Prime Grade: 70µV Max}
Low Grade: 100µV Max
■ _{High Voltage Gain: 5 Million Min}
■ _{Supply Current Per Amplifier: 3.1mA Max}
■ _{Common Mode Rejection: 112dB Min}
■ _{Power Supply Rejection: 116dB Min}
■ _{Available in 8-Lead SOIC, 8-Lead DIP, 16-Lead SO}
and 14-Lead DIP Packages
U
APPLICATIO S
■ _{Two and Three Op Amp Instrumentation Amplifiers}
■ _{Low Noise Signal Processing}
■ _{Active Filters}
■ _{Microvolt Accuracy Threshold Detection}
■ _{Strain Gauge Amplifiers}
■ _{Direct Coupled Audio Gain Stages}
■ _{Tape Head Preamplifiers}
■ _{Microphone Preamplifiers}
■ _{Accelerometer Amplifiers}
■ _{Infrared Detectors}
DESCRIPTIO
The LT^®1126 dual and LT1127 quad are high perfor-
mance, decompensated op amps that offer higher slew
rate and bandwidth than the LT1124 dual and the LT1125
quad operational amplifiers. The enhanced AC perfor-
mance is available without degrading DC specs of the
LT1124/LT1125. Both LT1126/LT1127 are stable in a gain
of 10 or more.
In the design, processing and testing of the device, par-
ticular attention has been paid to the optimization of the
entire distribution of several key parameters. Slew rate,
gain-bandwidth and 1kHz noise are 100% tested for each
individual amplifier. Consequently, the specifications of
even the lowest cost grades (the LT1126C and the LT1127C)
have been enhanced.
Power consumption of the dual LT1126 is less than one
half of two OP-37s. Low power and high performance in an
8-pin SO package makes the LT1126 a first choice for
surface mounted systems and where board space is
restricted.
, LTC and LT are registered trademarks of Linear Technology Corporation. All other
trademarks are the property of their respective owners. Protected by U.S. Patents including
4775884, 4837496.
TYPICAL APPLICATIO
Low Noise, Wide Bandwidth Instrumentation Amplifier
– INPUT
+
1/4
620Ω
10k
LT1127
–
6.2k
+ INPUT
–
1/4
LT1127
+
200Ω
6.2k
620Ω
–
1/4
LT1127
+
10k
GAIN = 1000, BANDWIDTH = 480kHz
INPUT REFERRED NOISE = 4.5nV/√ Hz AT 1kHz, 6µV_RMS OVER BANDWIDTH
OUTPUT
1126-7 TA01
Voltage Noise vs Frequency
100
V_S = ±15V
T_A = 25°C
30
10
3
1
0.1
MAXIMUM
1/f CORNER
2.3Hz
TYPICAL
1.0
10
100
1000
FREQUENCY (Hz)
1126-7 TA01b
11267fa
1