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LT1792: DescriptionLow Noise, Precision, JFET Input Op Amp; File Size174KB，12 Pages; ManufacturerLinear ( ADI ); Websitehttp://www.analog.com/cn/index.html

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LT1792 Overview

Low Noise, Precision, JFET Input Op Amp

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LT1792

Low Noise, Precision,

JFET Input Op Amp

FEATURES

DESCRIPTIO

100% Tested Low Voltage Noise: 6nV/√Hz Max

A Grade 100% Temperature Tested

Voltage Gain: 1.2 Million Min

Offset Voltage Over Temp: 800µV Max

Gain-Bandwidth Product: 5.6MHz Typ

Guaranteed Specifications with

±5V

Supplies

The LT

1792 achieves a new standard of excellence in

noise performance for a JFET op amp. The 4.2nV/√Hz

voltage noise combined with low current noise and

picoampere bias currents make the LT1792 an ideal choice

for amplifying low level signals from high impedance

capacitive transducers.

The LT1792 is unconditionally stable for gains of 1 or more,

even with load capacitances up to 1000pF. Other key

features are 600µV V

and a voltage gain of over 4 million.

Each individual amplifier is 100% tested for voltage noise,

slew rate and gain bandwidth.

The design of the LT1792 has been optimized to achieve

true precision performance with an industry standard

pinout in the SO-8 package. Specifications are also pro-

vided for

±5V

supplies.

, LTC and LT are registered trademarks of Linear Technology Corporation.

APPLICATIO 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

TYPICAL APPLICATIO

Low Noise Hydrophone Amplifier with DC Servo

5V TO 15V

1kHz Input Noise Voltage Distribution

±15V

= 25°C

270 OP AMPS TESTED

LT1792

R2 C1*

200Ω

0.47µF

OUTPUT

PERCENT OF UNITS (%)

–5V TO –15V

HYDRO-

PHONE

100k

LT1097

DC OUTPUT

≤

2.5mV FOR T

< 70°C

OUTPUT VOLTAGE NOISE = 128nV/√Hz AT 1kHz (GAIN = 20)

≈

100pF TO 5000pF; R4C2 > R8C

; *OPTIONAL

–

100M

–

R1*

100M

3.9k

3.6 3.8 4.0 4.2 4.4 4.6 4.8 5.0 5.2 5.4 5.6

INPUT VOLTAGE NOISE (nV/√Hz)

1792 TA02

1792 TA01

LT1792 Related Products

	LT1792	LT1792IN8	LT1792IS8	LT1792AIN8	LT1792CS8	LT1792ACS8	LT1792CN8	LT1792AIS8	LT1792ACN8
Description	Low Noise, Precision, JFET Input Op Amp	Low Noise, Precision, JFET Input Op Amp	Low Noise, Precision, JFET Input Op Amp	Low Noise, Precision, JFET Input Op Amp	Low Noise, Precision, JFET Input Op Amp	Low Noise, Precision, JFET Input Op Amp	Low Noise, Precision, JFET Input Op Amp	Low Noise, Precision, JFET Input Op Amp	Low Noise, Precision, 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	DIP	SOIC	DIP
package instruction	-	DIP, DIP8,.3	SOP, SOP8,.25	DIP, DIP8,.3	0.150 INCH, PLASTIC, SO-8	SOP, SOP8,.25	DIP, DIP8,.3	SOP, SOP8,.25	DIP, DIP8,.3
Contacts	-	8	8	8	8	8	8	8	8
Manufacturer packaging code	-	N	S8	N	S8	S8	N	S8	N
Reach Compliance Code	-	_compli	_compli	_compli	_compli	_compli	_compli	_compli	_compli
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)	-	0.004 µA	0.004 µA	0.004 µA	0.0018 µA	0.0018 µA	0.0018 µA	0.004 µA	0.0018 µA
Maximum bias current (IIB) at 25C	-	0.0008 µA	0.0008 µA	0.0008 µA	0.0008 µA	0.0008 µA	0.0008 µA	0.0008 µA	0.0008 µA
Nominal Common Mode Rejection Ratio	-	98 dB	98 dB	103 dB	99 dB	104 dB	99 dB	103 dB	104 dB
frequency compensation	-	YES	YES	YES	YES	YES	YES	YES	YES
Maximum input offset current (IIO)	-	0.008 µA	0.008 µA	0.003 µA	0.005 µA	0.005 µA	0.005 µA	0.003 µA	0.005 µA
Maximum input offset voltage	-	3700 µV	3700 µV	1000 µV	2700 µV	800 µV	2700 µV	1000 µV	800 µV
JESD-30 code	-	R-PDIP-T8	R-PDSO-G8	R-PDIP-T8	R-PDSO-G8	R-PDSO-G8	R-PDIP-T8	R-PDSO-G8	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	-	85 °C	85 °C	85 °C	70 °C	70 °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	DIP	SOP	DIP
Encapsulate equivalent code	-	DIP8,.3	SOP8,.25	DIP8,.3	SOP8,.25	SOP8,.25	DIP8,.3	SOP8,.25	DIP8,.3
Package shape	-	RECTANGULAR	RECTANGULAR	RECTANGULAR	RECTANGULAR	RECTANGULAR	RECTANGULAR	RECTANGULAR	RECTANGULAR
Package form	-	IN-LINE	SMALL OUTLINE	IN-LINE	SMALL OUTLINE	SMALL OUTLINE	IN-LINE	SMALL OUTLINE	IN-LINE
Peak Reflow Temperature (Celsius)	-	NOT SPECIFIED	235	NOT SPECIFIED	235	235	NOT SPECIFIED	235	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	1.75 mm	3.937 mm	1.75 mm	1.75 mm	3.937 mm	1.75 mm	3.937 mm
minimum slew rate	-	2 V/us	2 V/us	2 V/us	2.1 V/us	2.1 V/us	2.1 V/us	2 V/us	2.1 V/us
Nominal slew rate	-	3 V/us	3 V/us	3 V/us	3.1 V/us	3.1 V/us	3.1 V/us	3 V/us	3.1 V/us
Maximum slew rate	-	5.4 mA	5.4 mA	5.4 mA	5.3 mA	5.3 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	NO	YES	NO
Temperature level	-	INDUSTRIAL	INDUSTRIAL	INDUSTRIAL	COMMERCIAL	COMMERCIAL	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	THROUGH-HOLE	GULL WING	THROUGH-HOLE
Terminal pitch	-	2.54 mm	1.27 mm	2.54 mm	1.27 mm	1.27 mm	2.54 mm	1.27 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	NOT SPECIFIED	20	NOT SPECIFIED
Nominal Uniform Gain Bandwidth	-	4300 kHz	4300 kHz	4300 kHz	4500 kHz	4500 kHz	4500 kHz	4300 kHz	4500 kHz
Minimum voltage gain	-	300000	300000	400000	400000	500000	400000	400000	500000
width	-	7.62 mm	3.9 mm	7.62 mm	3.9 mm	3.9 mm	7.62 mm	3.9 mm	7.62 mm
Base Number Matches	-	-	1	-	1	1	1	-	1

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