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LT1793ACS8#PBF

Description
Op Amp Single Low Noise Amplifier ±20V 8-Pin SOIC N Tube
CategoryAnalog mixed-signal IC    Amplifier circuit   
File Size164KB,12 Pages
ManufacturerADI
Websitehttps://www.analog.com
Environmental Compliance
Download Datasheet Parametric View All

LT1793ACS8#PBF Overview

Op Amp Single Low Noise Amplifier ±20V 8-Pin SOIC N Tube

LT1793ACS8#PBF Parametric

Parameter NameAttribute value
Brand NameAnalog Devices Inc
Is it lead-free?Contains lead
Is it Rohs certified?conform to
MakerADI
package instruction0.150 INCH, PLASTIC, SO-8
Contacts8
Manufacturer packaging code05-08-1610 (S8)
Reach Compliance Codecompliant
Is SamacsysN
Amplifier typeOPERATIONAL AMPLIFIER
Maximum average bias current (IIB)0.0004 µA
Nominal Common Mode Rejection Ratio100 dB
Maximum input offset voltage1000 µV
JESD-30 codeR-PDSO-G8
JESD-609 codee3
length4.9 mm
micropowerNO
Humidity sensitivity level1
Negative supply voltage upper limit-20 V
Nominal Negative Supply Voltage (Vsup)-15 V
Number of functions1
Number of terminals8
Maximum operating temperature70 °C
Minimum operating temperature
Package body materialPLASTIC/EPOXY
encapsulated codeSOP
Package shapeRECTANGULAR
Package formSMALL OUTLINE
Peak Reflow Temperature (Celsius)260
Certification statusNot Qualified
Maximum seat height1.75 mm
Nominal slew rate3.3 V/us
Supply voltage upper limit20 V
Nominal supply voltage (Vsup)15 V
surface mountYES
Temperature levelCOMMERCIAL
Terminal surfaceMatte Tin (Sn)
Terminal formGULL WING
Terminal pitch1.27 mm
Terminal locationDUAL
Maximum time at peak reflow temperature30
Nominal Uniform Gain Bandwidth3300 kHz
width3.9 mm
Base Number Matches1
LT1793
Low Noise,
Picoampere Bias Current,
JFET Input Op Amp
FEATURES
s
s
s
s
s
s
s
s
s
DESCRIPTIO
Input Bias Current, Warmed Up: 10pA Max
100% Tested Low Voltage Noise: 8nV/√Hz Max
A Grade 100% Temperature Tested
Offset Voltage Over Temp: 1mV Max
Input Resistance: 10
13
Very Low Input Capacitance: 1.5pF
Voltage Gain: 1 Million Min
Gain-Bandwidth Product: 4.2MHz Typ
Guaranteed Specifications with
±5V
Supplies
APPLICATIO S
s
s
s
s
s
s
Photocurrent Amplifiers
Hydrophone Amplifiers
High Sensitivity Piezoelectric Accelerometers
Low Voltage and Current Noise Instrumentation
Amplifier Front Ends
Two and Three Op Amp Instrumentation Amplifiers
Active Filters
, LTC and LT are registered trademarks of Linear Technology Corporation.
The LT
®
1793 achieves a new standard of excellence in
noise performance for a JFET op amp. For the first time low
voltage noise (6nV/√Hz) is simultaneously offered with
extremely low current noise (0.8fA/√Hz), providing the
lowest total noise for high impedance transducer applica-
tions. Unlike most JFET op amps, the very low input bias
current (3pA typ) is maintained over the entire common
mode range which results in an extremely high input resis-
tance (10
13
Ω).
When combined with a very low input ca-
pacitance (1.5pF) an extremely high input impedance
results, making the LT1793 the first choice for amplifying
low level signals from high impedance transducers. The
low input capacitance also assures high gain linearity when
buffering AC signals from high impedance transducers.
The LT1793 is unconditionally stable for gains of 1 or more,
even with 1000pF capacitive loads. Other key features are
250µV V
OS
and a voltage gain over 4 million. Each indi-
vidual amplifier is 100% tested for voltage noise, slew rate
(3.4V/µs) and gain-bandwidth product (4.2MHz).
Specifications at
±5V
supply operation are also provided.
For an even lower voltage noise please see the LT1792 data
sheet.
TYPICAL APPLICATIO
Low Noise Light Sensor with DC Servo
C1
2pF
TOTAL 1kHz VOLTAGE NOISE DENSITY (nV/√Hz)
10k
V
+
R3
1k
LT1097
2N3904
HAMAMATSU
S1336-5BK
(908) 231-0960
V
R5
10k
R4
1k
V
R2C2 > C1R1
C
D
= PARASITIC PHOTODIODE CAPACITANCE
V
OUT
= 100mV/µWATT FOR 200nm WAVE LENGTH
330mV/µWATT FOR 633nm WAVE LENGTH
C
D
D1
1N914
+
+
D2
1N914
3
2
7
LT1793
4
V
R1
1M
6
C2 0.022µF
V
+
V
OUT
1k
100
R2
100k
10
1793 TA01
1
100
U
1kHz Output Voltage Noise
Density vs Source Resistance
+
R
SOURCE
V
N
U
U
V
N
SOURCE
RESISTANCE
ONLY
1k
T
A
= 25°C
V
S
=
±15V
10k 100k 1M 10M 100M 1G
SOURCE RESISTANCE (Ω)
V
N
=
(V
OP AMP
)
2
+ 4kTR
S
+ 2qI
B
R
S2
1793 TA02
1
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