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Part: LF347B
Category:
Analog & Mixed-Signal Processing
-> Amplifiers
-> Operational Amplifiers
-> General Purpose
Description: Wide Bandwidth Quad J-FET Operational Amplifiers
Company: ST Microelectronics, Inc.
Datasheet: Download LF347B datasheet File size : 82 kB
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Datasheet text preview:
LF147 - LF247 LF347
WIDE BANDWIDTH QUAD J-FET OPERATIONAL AMPLIFIERS
s LOW POWER CONSUMPTION s WIDE COMMON-MODE (UP TO VCC+) AND
DIFFERENTIAL VOLTAGE RANGE
s LOW INPUT BIAS AND OFFSET CURRENT s OUTPUT SHORT-CIRCUIT PROTECTION s HIGH INPUT IMPEDANCE JFET INPUT
STAGE
N DIP14 (Plastic Package)
s INTERNAL FREQUENCY COMPENSATION s LATCH UP FREE OPERATION s HIGH SLEW RATE : 16V/µs (typ)
D SO14 (Plastic Micropackage)
DESCRIPTION These circuits are high speed JFET input quad operational amplifiers incorporating well matched, high voltage JFET and bipolar transistors in a monolithic integrated circuit. The devices feature high slew rates, low input bias and offset currents, and low offset voltage temperature coefficient. PIN CONNECTIONS (top view)
ORDER CODE
Package Part Number Temperature Range N LF147 LF247 LF347 Example : LF347IN -55°C, +125°C -40°C, +105°C 0°C, +70°C · · · D · · ·
N = Dual in Line Package (DIP) D = Small Outline Package (SO) - also available in Tape & Reel (DT)
Output 1 1 Inverting Input 1 2 Non-inverting Input 1 3 VCC + 4 Non-inverting Input 2 5 Inverting Input 2 6 Output 2 7 + + + +
14 Output 4 13 Inverting Input 4 12 Non-inverting Input 4 11 VCC 10 Non-inverting Input 3 9 8 Inverting Input 3 Output 3
March 2001
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LF147 - LF247 - LF347
SCHEMATIC DIAGRAM (each amplifier)
VCC
Non-inverting input
Inverting input 100W 100 W
200 W Output
30k
8.2k
1.3k VCC
35k
1.3k
35k
100 W
ABSOLUTE MAXIMUM RATINGS
Symbol VCC Vi Vid Ptot Toper Tstg
1. 2. 3. 4.
Parameter Supply voltage - note 1) Input Voltage - note Power Dissipation Output Short-circuit Duration - note 4) Operating Free-air Temperature Range Storage Temperature Range
2) 3)
LF147
LF247
LF347
Unit V V V mW
±18 ±15 ±30 680 Infinite -55 to +125 -40 to +105 -65 to +150 0 to +70
Differential Input Voltage - note
°C °C
All voltage values, except differential voltage, are with respect to the zero reference level (ground) of the supply voltages where the zero reference level is the midpoint between VCC + and VCC -. T he magnitude of the input voltage must never exceed the magnitude of the supply voltage or 15 volts, whichever is less. Differential voltages are the non-inverting input terminal with respect to the inverting input terminal. T he output may be shorted to ground or to either supply. Temperature and/or supply voltages must be limited to ensure that the dissipation rating is not exceeded
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LF147 - LF247 - LF347
ELECTRICAL CHARACTERISTICS VCC = ±15V, Tamb = +25°C (unless otherwise specified)
Symbol Vio DVio Iio Parameter Input Offset Voltage (Rs = 10k) Tamb = 25°C Tmin Tamb Tmax Input Offset Voltage Drift Input Offset Current - note Tamb = 25°C Tmin Tamb Tmax
1)
Min.
Typ. 3 10 5
Max. 10 13
Unit mV
µV/°C 100 4 200 20 pA nA pA nA V/mV
Iib
Input Bias Current - note 1 Tamb = 25°C Tmin Tamb Tmax Large Signal Voltage Gain (RL = 2k, Vo = ±10V) , Tamb = 25°C Tmin Tamb Tmax Supply Voltage Rejection Ratio (RS = 10k) Tamb = 25°C Tmin Tamb Tmax Supply Current, Per Amp, no Load Tamb = 25°C Tmin Tamb Tmax Input Common Mode Voltage Range Common Mode Rejection Ratio (RS = 10k) Tamb = 25°C Tmin Tamb Tmax Output Short-Circuit Current Tamb = 25°C Tmin Tamb Tmax Output Voltage Swing Tamb = 25°C RL = 2k RL = 10k RL = 2k RL = 10k ±11 50 25 80 80
20
Avd
200 dB 86 mA 1.4 +15 -12 86 mA 2.7 2 .7 V dB
SVR
IC C Vicm CMR
70 70 10 10 10 12 10 12 12
IO S
40
60 60 V
±Vopp
Tmin Tamb Tmax
12 13.5
SR tr Kov GBP Ri
Slew Rate Vi = 10V, RL = 2k, CL = 100pF, Tamb = 25°C, unity gain Rise Time Vi = 20mV, RL = 2k,CL = 100pF, Tamb = 25°C, unity gain Overshoot Vi = 20mV, RL = 2k, CL = 100pF, Tamb = 25°C, unity gain Gain Bandwidth Product f =100kHz, Tamb = 25°C, Vin = 10mV, RL =2k, CL = 100pF Input Resistance
V/µs 16 µs 0.1 % 10 MHz 2.5 4 1012
%
THD
Total Harmonic Distortion f =1kHz, Av = 20dB, RL = 2k, CL = 100pF Tamb = 25°C, VO = 2Vpp
Equivalent Input Noise Voltage (RS = 100, f = 1KHz)
0.01 15 45 120 nV ----------Hz Degrees dB
en
m Phase Margin Vo1/Vo2 Channel Separation ( Av = 100)
1.
T he input bias currents are junction leakage currents which approximately double for every 10°C increase in the junction temperature.
3/10
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