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LT1793CN8

Description
Low Noise, Picoampere Bias Current, JFET Input Op Amp
CategoryAnalog mixed-signal IC    Amplifier circuit   
File Size167KB,12 Pages
ManufacturerLinear ( ADI )
Websitehttp://www.analog.com/cn/index.html
Download Datasheet Parametric Compare View All

LT1793CN8 Overview

Low Noise, Picoampere Bias Current, JFET Input Op Amp

LT1793CN8 Parametric

Parameter NameAttribute value
Brand NameLinear Technology
Is it Rohs certified?incompatible
Parts packaging codeDIP
package instructionDIP, DIP8,.3
Contacts8
Manufacturer packaging codeN
Reach Compliance Code_compli
ECCN codeEAR99
Amplifier typeOPERATIONAL AMPLIFIER
ArchitectureVOLTAGE-FEEDBACK
Maximum average bias current (IIB)0.0005 µA
Maximum bias current (IIB) at 25C0.00002 µA
Nominal Common Mode Rejection Ratio95 dB
frequency compensationYES
Maximum input offset current (IIO)0.0013 µA
Maximum input offset voltage3500 µV
JESD-30 codeR-PDIP-T8
JESD-609 codee0
low-biasYES
low-dissonanceNO
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 codeDIP
Encapsulate equivalent codeDIP8,.3
Package shapeRECTANGULAR
Package formIN-LINE
Peak Reflow Temperature (Celsius)NOT SPECIFIED
power supply+-15 V
Certification statusNot Qualified
Maximum seat height3.937 mm
minimum slew rate2.2 V/us
Nominal slew rate3.3 V/us
Maximum slew rate5.3 mA
Supply voltage upper limit20 V
Nominal supply voltage (Vsup)15 V
surface mountNO
Temperature levelCOMMERCIAL
Terminal surfaceTin/Lead (Sn/Pb)
Terminal formTHROUGH-HOLE
Terminal pitch2.54 mm
Terminal locationDUAL
Maximum time at peak reflow temperatureNOT SPECIFIED
Nominal Uniform Gain Bandwidth3300 kHz
Minimum voltage gain400000
width7.62 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
1793 TA01
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
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

LT1793CN8 Related Products

LT1793CN8 LT1793IS8 LT1793IN8 LT1793CS8 LT1793AIS8 LT1793ACS8 LT1793AIN8 LT1793ACN8 LT1793
Description Low Noise, Picoampere Bias Current, JFET Input Op Amp Low Noise, Picoampere Bias Current, JFET Input Op Amp Low Noise, Picoampere Bias Current, JFET Input Op Amp Low Noise, Picoampere Bias Current, JFET Input Op Amp Low Noise, Picoampere Bias Current, JFET Input Op Amp Low Noise, Picoampere Bias Current, JFET Input Op Amp Low Noise, Picoampere Bias Current, JFET Input Op Amp Low Noise, Picoampere Bias Current, JFET Input Op Amp Low Noise, Picoampere Bias Current, JFET Input Op Amp
Brand Name Linear Technology Linear Technology Linear Technology Linear Technology Linear Technology Linear Technology Linear Technology Linear Technology -
Is it Rohs certified? incompatible incompatible incompatible incompatible incompatible incompatible incompatible incompatible -
Parts packaging code DIP SOIC DIP SOIC SOIC SOIC DIP DIP -
package instruction DIP, DIP8,.3 SOP, SOP8,.25 DIP, DIP8,.3 SOP, SOP8,.25 0.150 INCH, PLASTIC, SOP-8 SOP, SOP8,.25 DIP, DIP8,.3 DIP, DIP8,.3 -
Contacts 8 8 8 8 8 8 8 8 -
Manufacturer packaging code N S8 N S8 S8 S8 N N -
Reach Compliance Code _compli _compli _compli _compli not_compliant _compli not_compliant not_compliant -
ECCN code EAR99 EAR99 EAR99 EAR99 EAR99 EAR99 EAR99 EAR99 -
Amplifier type OPERATIONAL AMPLIFIER OPERATIONAL AMPLIFIER OPERATIONAL AMPLIFIER OPERATIONAL AMPLIFIER OPERATIONAL AMPLIFIER OPERATIONAL AMPLIFIER OPERATIONAL AMPLIFIER OPERATIONAL AMPLIFIER -
Architecture VOLTAGE-FEEDBACK VOLTAGE-FEEDBACK VOLTAGE-FEEDBACK VOLTAGE-FEEDBACK VOLTAGE-FEEDBACK VOLTAGE-FEEDBACK VOLTAGE-FEEDBACK VOLTAGE-FEEDBACK -
Maximum average bias current (IIB) 0.0005 µA 0.003 µA 0.003 µA 0.0005 µA 0.0024 µA 0.0004 µA 0.0024 µA 0.0004 µA -
Maximum bias current (IIB) at 25C 0.00002 µA 0.00002 µA 0.00002 µA 0.00002 µA 0.00001 µA 0.00001 µA 0.00001 µA 0.00001 µA -
Nominal Common Mode Rejection Ratio 95 dB 94 dB 94 dB 95 dB 99 dB 100 dB 99 dB 100 dB -
frequency compensation YES YES YES YES YES YES YES YES -
Maximum input offset current (IIO) 0.0013 µA 0.004 µA 0.004 µA 0.0013 µA 0.003 µA 0.001 µA 0.003 µA 0.001 µA -
Maximum input offset voltage 3500 µV 4800 µV 4800 µV 3500 µV 1300 µV 1000 µV 1300 µV 1000 µV -
JESD-30 code R-PDIP-T8 R-PDSO-G8 R-PDIP-T8 R-PDSO-G8 R-PDSO-G8 R-PDSO-G8 R-PDIP-T8 R-PDIP-T8 -
JESD-609 code e0 e0 e0 e0 e0 e0 e0 e0 -
low-bias YES YES YES YES YES YES YES YES -
low-dissonance NO NO NO NO NO NO NO NO -
Humidity sensitivity level 1 1 1 1 1 1 1 1 -
Negative supply voltage upper limit -20 V -20 V -20 V -20 V -20 V -20 V -20 V -20 V -
Nominal Negative Supply Voltage (Vsup) -15 V -15 V -15 V -15 V -15 V -15 V -15 V -15 V -
Number of functions 1 1 1 1 1 1 1 1 -
Number of terminals 8 8 8 8 8 8 8 8 -
Maximum operating temperature 70 °C 85 °C 85 °C 70 °C 85 °C 70 °C 85 °C 70 °C -
Package body material PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY -
encapsulated code DIP SOP DIP SOP SOP SOP DIP DIP -
Encapsulate equivalent code DIP8,.3 SOP8,.25 DIP8,.3 SOP8,.25 SOP8,.25 SOP8,.25 DIP8,.3 DIP8,.3 -
Package shape RECTANGULAR RECTANGULAR RECTANGULAR RECTANGULAR RECTANGULAR RECTANGULAR RECTANGULAR RECTANGULAR -
Package form IN-LINE SMALL OUTLINE IN-LINE SMALL OUTLINE SMALL OUTLINE SMALL OUTLINE IN-LINE IN-LINE -
Peak Reflow Temperature (Celsius) NOT SPECIFIED 235 NOT SPECIFIED 235 235 235 NOT SPECIFIED NOT SPECIFIED -
power supply +-15 V +-15 V +-15 V +-15 V +-15 V +-15 V +-15 V +-15 V -
Certification status Not Qualified Not Qualified Not Qualified Not Qualified Not Qualified Not Qualified Not Qualified Not Qualified -
Maximum seat height 3.937 mm 1.752 mm 3.937 mm 1.752 mm 1.752 mm 1.752 mm 3.937 mm 3.937 mm -
minimum slew rate 2.2 V/us 2.1 V/us 2.1 V/us 2.2 V/us 2.1 V/us 2.2 V/us 2.1 V/us 2.2 V/us -
Nominal slew rate 3.3 V/us 3.2 V/us 3.2 V/us 3.3 V/us 3.2 V/us 3.3 V/us 3.2 V/us 3.3 V/us -
Maximum slew rate 5.3 mA 5.4 mA 5.4 mA 5.3 mA 5.4 mA 5.3 mA 5.4 mA 5.3 mA -
Supply voltage upper limit 20 V 20 V 20 V 20 V 20 V 20 V 20 V 20 V -
Nominal supply voltage (Vsup) 15 V 15 V 15 V 15 V 15 V 15 V 15 V 15 V -
surface mount NO YES NO YES YES YES NO NO -
Temperature level COMMERCIAL INDUSTRIAL INDUSTRIAL COMMERCIAL INDUSTRIAL COMMERCIAL INDUSTRIAL COMMERCIAL -
Terminal surface Tin/Lead (Sn/Pb) Tin/Lead (Sn/Pb) Tin/Lead (Sn/Pb) Tin/Lead (Sn/Pb) Tin/Lead (Sn/Pb) Tin/Lead (Sn/Pb) Tin/Lead (Sn/Pb) Tin/Lead (Sn/Pb) -
Terminal form THROUGH-HOLE GULL WING THROUGH-HOLE GULL WING GULL WING GULL WING THROUGH-HOLE THROUGH-HOLE -
Terminal pitch 2.54 mm 1.27 mm 2.54 mm 1.27 mm 1.27 mm 1.27 mm 2.54 mm 2.54 mm -
Terminal location DUAL DUAL DUAL DUAL DUAL DUAL DUAL DUAL -
Maximum time at peak reflow temperature NOT SPECIFIED 20 NOT SPECIFIED 20 20 20 NOT SPECIFIED NOT SPECIFIED -
Nominal Uniform Gain Bandwidth 3300 kHz 3100 kHz 3100 kHz 3300 kHz 3100 kHz 3300 kHz 3100 kHz 3300 kHz -
Minimum voltage gain 400000 400000 400000 400000 400000 500000 400000 500000 -
width 7.62 mm 3.899 mm 7.62 mm 3.899 mm 3.899 mm 3.899 mm 7.62 mm 7.62 mm -
Base Number Matches 1 - - 1 1 1 1 1 -
Maker - Linear ( ADI ) Linear ( ADI ) - Linear ( ADI ) - Linear ( ADI ) Linear ( ADI ) -
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