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Part: LF347B
Category:
Analog & Mixed-Signal Processing
-> Amplifiers
-> Operational Amplifiers
-> General Purpose
-> Quad
Description: Quad JFET-input op Amp: Quad
Company: Texas Instruments, Inc.
Datasheet: Download LF347B datasheet File size : 82 kB
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Datasheet text preview:
LF347, LF347B JFET-INPUT QUAD OPERATIONAL AMPLIFIERS
SLOS013B MARCH 1987 REVISED AUGUST 1994
D D D D D D D
Low Input Bias Current . . . 50 pA Typ Low Input Noise Current 0.01 pA/Hz Typ Low Total Harmonic Distortion Low Supply Current . . . 8 mA Typ Gain Bandwidth . . . 3 MHz Typ High Slew Rate . . . 13 V/µs Typ Pin Compatible With the LM348
D OR N PACKAGE (TOP VIEW)
1OUT 1IN 1IN + V CC + 2IN + 2IN 2OUT
1 2 3 4 5 6 7
14 13 12 11 10 9 8
4OUT 4IN 4IN + VCC 3IN + 3IN 3OUT
description
These devices are low-cost, high-speed, JFET-input operational amplifiers. They require low supply current yet maintain a large gain-bandwidth product and a fast slew rate. In addition, their matched high-voltage JFET inputs provide very low input bias and offset current. The LF347 and LF347B can be used in applications such as high-speed integrators, digital-to-analog converters, sample-and-hold circuits, and many other circuits. The LF347 and LF347B are characterized for operation from 0°C to 70°C.
symbol (each amplifier)
IN IN + OUT +
AVAILABLE OPTIONS TA 0°C to 70°C to 70°C VIOmax AT 25°C 10 mV 5 mV PACKAGE SMALL OUTLINE (D) LF347D LF347BD PLASTIC DIP (N) LF347N LF347BN
The D packages are available taped and reeled. Add R suffix to the device type (e.g., LF347DR).
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
Supply voltage, VCC + . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 V Supply voltage, VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 V Differential input voltage, VID . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ± 30 V Input voltage, VI (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ± 15 V Duration of output short circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . unlimited Continuous total power dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . See Dissipation Rating Table Operating temperature range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0°C to 70°C Storage temperature range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65°C to 150°C Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 260°C
NOTE 1: Unless otherwise specified, the absolute maximum negative input voltage is equal to the negative power supply voltage.
PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters.
Copyright © 1994, Texas Instruments Incorporated
POST OFFICE BOX 655303
· DALLAS, TEXAS 75265
1
LF347, LF347B JFET-INPUT QUAD OPERATIONAL AMPLIFIERS
SLOS013B MARCH 1987 REVISED AUGUST 1994
DISSIPATION RATING TABLE PACKAGE D N TA 25°C POWER RATING 608 mW 680 mW DERATING FACTOR 7.6 mW/°C N/A DERATE ABOVE TA 61°C N/A TA = 70°C POWER RATING 608 mW 680 mW
recommended operating conditions
MIN Supply voltage, VCC + Supply voltage, VCC 3.5 3.5 MAX 18 18 UNIT V V
electrical characteristics over operating free-air temperature range, VCC ± = ±15 V (unless otherwise specified)
PARAMETER VIO VIO IIO IIB Input offset voltage offset voltage Average temperature coefficient of input offset voltage Input offset current offset c rrent Input bias current bias c rrent TEST CONDITIONS VIC = 0, , RS = 10 k VIC = 0, RS = 10 k VIC = 0 VIC = 0 25°C 70°C 25°C 70°C ± 11 RL = 10 k VO = ± 10 V, , RL = 2 k TA = 25°C RS 2 k See Note 2 25°C Full range ± 12 25 15 1012 70 70 100 100 80 80 12 to 15 ± 13.5 100 50 TA 25°C Full range 18 25 100 4 200 8 ± 11 ± 12 50 25 1012 100 100 12 to 15 ± 13.5 100 50 LF347 MIN TYP 5 MAX 10 13 18 25 100 4 200 8 MIN LF347B TYP 3 MAX 5 7 UNIT mV µV/°C pA nA pA nA V V V/mV dB dB
VICR VOM AVD ri CMRR kSVR
Common-mode input voltage range Maximum peak output voltage swing Large-signal differential voltage differential voltage Input resistance Common-mode rejection ratio Supply-voltage rejection ratio
ICC Supply current 8 11 8 11 mA Full range is 0°C to 70°C. Input bias currents of a FET-input operational amplifier are normal junction reverse currents, which are temperature sensitive. Pulse techniques must be used that will maintain the junction temperatures as close to the ambient temperature as possible. NOTE 2: Supply-voltage rejection ratio is measured for both supply magnitudes increasing or decreasing simultaneously.
operating characteristics, VCC ± = ±15 V
PARAMETER VO1/VO2 SR B1 Vn In Crosstalk attentuation Slew rate Unity-gain bandwidth Equivalent input noise voltage Equivalent input noise current f = 1 kHz, f = 1 kHz RS = 20 TEST CONDITIONS f = 1 kHz 8 MIN TYP 120 13 3 18 0.01 MAX UNIT dB V/µs MHz nV/Hz pA/Hz
2
POST OFFICE BOX 655303
· DALLAS, TEXAS 75265
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Copyright © 1998, Texas Instruments Incorporated
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