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LF347N

hot LF347N

LF347N

For Reference Only

Part Number LF347N
Manufacturer STMicroelectronics
Description IC OPAMP JFET 4MHZ 14DIP
Datasheet LF347N Datasheet
Package 14-DIP (0.300", 7.62mm)
In Stock 63518 piece(s)
Unit Price Request a Quote
Lead Time Can Ship Immediately
Estimated Delivery Time Dec 13 - Dec 18 (Choose Expedited Shipping)
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LF347N

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LF347N Specifications

ManufacturerSTMicroelectronics
CategoryIntegrated Circuits (ICs) - Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps
Datasheet LF347N Datasheet
Package14-DIP (0.300", 7.62mm)
Series-
Amplifier TypeJ-FET
Number of Circuits4
Slew Rate16 V/µs
Gain Bandwidth Product4MHz
Current - Input Bias20pA
Voltage - Input Offset3mV
Current - Supply1.4mA
Current - Output / Channel40mA
Voltage - Supply, Single/Dual (��)8 V ~ 36 V, ��4 V ~ 18 V
Operating Temperature0°C ~ 70°C
Mounting TypeThrough Hole
Package / Case14-DIP (0.300", 7.62mm)
Supplier Device Package14-DIP

LF347N Datasheet

Page 1

Page 2

1/10 ■ LOW POWER CONSUMPTION ■ WIDE COMMON-MODE (UP TO VCC +) AND DIFFERENTIAL VOLTAGE RANGE ■ LOW INPUT BIAS AND OFFSET CURRENT ■ OUTPUT SHORT-CIRCUIT PROTECTION ■ HIGH INPUT IMPEDANCE J–FET INPUT STAGE ■ INTERNAL FREQUENCY COMPENSATION ■ LATCH UP FREE OPERATION ■ HIGH SLEW RATE : 16V/µs (typ) DESCRIPTION These circuits are high speed J–FET input quad operational amplifiers incorporating well matched, high voltage J–FET and bipolar transistors in a monolithic integrated circuit. The devices feature high slew rates, low input bias and offset currents, and low offset voltage tem- perature coefficient. ORDER CODE N = Dual in Line Package (DIP) D = Small Outline Package (SO) - also available in Tape & Reel (DT) PIN CONNECTIONS (top view) Part Number Temperature Range Package N D LF147 -55°C, +125°C • • LF247 -40°C, +105°C • • LF347 0°C, +70°C • • Example : LF347IN N DIP14 (Plastic Package) D SO14 (Plastic Micropackage) Inverting Input 2 Non-inverting Input 2 Non-inverting Input 1 CCV -CCV 1 2 3 4 8 5 6 7 9 10 11 12 13 14 + Output 3 Output 4 Non-inverting Input 4 Inverting Input 4 Non-inverting Input 3 Inverting Input 3 - + - + - + - + Output 1 Inverting Input 1 Output 2 LF147 - LF247 LF347 WIDE BANDWIDTH QUAD J-FET OPERATIONAL AMPLIFIERS March 2001

Page 3

LF147 - LF247 - LF347 2/10 SCHEMATIC DIAGRAM (each amplifier) ABSOLUTE MAXIMUM RATINGS Symbol Parameter LF147 LF247 LF347 Unit VCC Supply voltage - note 1) 1. 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 -. ±18 V Vi Input Voltage - note 2) 2. The magnitude of the input voltage must never exceed the magnitude of the supply voltage or 15 volts, whichever is less. ±15 V Vid Differential Input Voltage - note 3) 3. Differential voltages are the non-inverting input terminal with respect to the inverting input terminal. ±30 V Ptot Power Dissipation 680 mW Output Short-circuit Duration - note 4) 4. The 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 Infinite Toper Operating Free-air Temperature Range -55 to +125 -40 to +105 0 to +70 °C Tstg Storage Temperature Range -65 to +150 °C Output Non-inverting input Inverting input VCC VCC 200W W100 W100 1.3k 30k 35k 35k W1001.3k 8.2k

Page 4

LF147 - LF247 - LF347 3/10 ELECTRICAL CHARACTERISTICS VCC = ±15V, Tamb = +25°C (unless otherwise specified) Symbol Parameter Min. Typ. Max. Unit Vio Input Offset Voltage (Rs = 10kΩ) Tamb = 25°C Tmin ≤ Tamb ≤ Tmax 3 10 13 mV DVio Input Offset Voltage Drift 10 µV/°C Iio Input Offset Current - note 1) Tamb = 25°C Tmin ≤ Tamb ≤ Tmax 1. The input bias currents are junction leakage currents which approximately double for every 10°C increase in the junction temperature. 5 100 4 pA nA Iib Input Bias Current - note 1 Tamb = 25°C Tmin ≤ Tamb ≤ Tmax 20 200 20 pA nA Avd Large Signal Voltage Gain (RL = 2kΩ, Vo = ±10V) , Tamb = 25°C Tmin ≤ Tamb ≤ Tmax 50 25 200 V/mV SVR Supply Voltage Rejection Ratio (RS = 10kΩ) Tamb = 25°C Tmin ≤ Tamb ≤ Tmax 80 80 86 dB ICC Supply Current, Per Amp, no Load Tamb = 25°C Tmin ≤ Tamb ≤ Tmax 1.4 2.7 2.7 mA Vicm Input Common Mode Voltage Range ±11 +15 -12 V CMR Common Mode Rejection Ratio (RS = 10kΩ) Tamb = 25°C Tmin ≤ Tamb ≤ Tmax 70 70 86 dB IOS Output Short-Circuit Current Tamb = 25°C Tmin ≤ Tamb ≤ Tmax 10 10 40 60 60 mA ±Vopp Output Voltage Swing Tamb = 25°C RL = 2kΩ RL = 10kΩ Tmin ≤ Tamb ≤ Tmax RL = 2kΩ RL = 10kΩ 10 12 10 12 12 13.5 V SR Slew Rate Vi = 10V, RL = 2kΩ, CL = 100pF, Tamb = 25°C, unity gain 12 16 V/µs tr Rise Time Vi = 20mV, RL = 2kΩ,CL = 100pF, Tamb = 25°C, unity gain 0.1 µs Kov Overshoot Vi = 20mV, RL = 2kΩ, CL = 100pF, Tamb = 25°C, unity gain 10 % GBP Gain Bandwidth Product f =100kHz, Tamb = 25°C, Vin = 10mV, RL =2kΩ, CL = 100pF 2.5 4 MHz Ri Input Resistance 1012 Ω THD Total Harmonic Distortion f =1kHz, Av = 20dB, RL = 2kΩ, CL = 100pF Tamb = 25°C, VO = 2Vpp 0.01 % en Equivalent Input Noise Voltage (RS = 100Ω, f = 1KHz) 15 ∅m Phase Margin 45 Degrees Vo1/Vo2 Channel Separation ( Av = 100) 120 dB nV Hz -----------

Page 5

LF147 - LF247 - LF347 4/10 MAXIMUM PEAK-TO-PEAK OUTPUT VOLTAGE versus FREQUENCY MAXIMUM PEAK-TO-PEAK OUTPUT VOLTAGE versus FREQUENCY MAXIMUM PEAK-TO-PEAK OUTPUT VOLTAGE versus LOAD RESISTANCE MAXIMUM PEAK-TO-PEAK OUTPUT VOLTAGE versus FREQUENCY MAXIMUM PEAK-TO-PEAK OUTPUT VOLTAGE versus FREE AIR TEMP. MAXIMUM PEAK-TO-PEAK OUTPUT VOLTAGE versus SUPPLY VOLTAGE 30 25 20 15 10 5 0 2 4 6 8 10 12 14 16 M A X IM U M P E A K -T O -P E A K O U T P U T V O L T A G E ( V ) RL = 10 kΩ Tamb = +25˚C SUPPLY VOLTAGE ( V)

Page 6

LF147 - LF247 - LF347 5/10 INPUT BIAS CURRENT versus FREE AIR TEMPERATURE LARGE SIGNAL DIFFERENTIAL VOLTAGE AMPLIFICATION AND PHASE SHIFT versus FREQUENCY SUPPLY CURRENT PER AMPLIFIER versus FREE AIR TEMPERATURE LARGE SIGNAL DIFFERENTIAL VOLTAGE AMPLIFICATION AND PHASE SHIFT versus FREQUENCY TOTAL POWER DISSIPATION versus FREE AIR TEMPERATURE COMMON MODE REJECTION RATIO versus FREE AIR TEMPERATURE 100 10 1 0.1 0.01 IN P U T B IA S C U R R E N T ( n A ) -50 -25 0 25 50 75 100 125 TEMPERATURE (˚C) V CC = 15V FREQUENCY (Hz) D IF F E R E N T IA L V O L T A G E A M P L IF IC A T IO N ( V /V ) 100 10 100 1K 10K 100K 10M1M 1 DIFFERENTIAL VOLTAGE AMPLIFICATION (left scale) 180 90 0 R = 2kW C = 100pF V = 15V T = +125°C L L CC amb PHASE SHIFT (right scale) 2.0 1.8 1.6 1.4 1.2 1.0 0.8 0.6 0.4 0.2 0 S U P P L Y C U R R E N T (m A ) -75 -50 -25 0 25 50 75 100 125 TEMPERATURE (˚C) V CC = 15V No signal No load 1000 400 200 100 20 40 10 4 2 1 D IF F E R E N T IA L V O L T A G E A M P LI F IC A T IO N ( V /V ) -75 -50 -25 0 25 50 75 100 125 TEMPERATURE (˚C) R L = 2k Ω V O = 10V V CC = 15V 250 225 200 175 150 125 100 75 50 25 0 T O T A L P O W E R D IS S IP A T IO N (m W ) -75 -50 -25 0 25 50 75 100 125 TEMPERATURE (˚C) V CC = 15V No signal No load 2.0 1.8 1.6 1.4 1.2 1.0 0.8 0.6 0.4 0.2 0 S U P P L Y C U R R E N T ( m A ) 0 2 4 6 8 10 12 14 16 SUPPLY VOLTAGE (V) T amb = +25°C No signal No load

Page 7

LF147 - LF247 - LF347 6/10 COMMON MODE REJECTION RATIO versus FREE AIR TEMPERATURE OUTPUT VOLTAGE versus ELAPSED TIME VOLTAGE FOLLOWER LARGE SIGNAL PULSE RESPONSE EQUIVALENT INPUT NOISE VOLTAGE versus FREQUENCY TOTAL HARMONIC DISTORTION versus FREQUENCY 89 88 87 86 85 84 -50 -25 0 25 50 75 100 125 C O M M O N M O D E M O D E R E JE C T IO N R A T IO ( dB ) TEMPERATURE (˚C) 83 -75 R L = 10 kΩ = 15VVC C t r 28 24 20 16 12 8 4 0 -4 O U T P U T V O L T A G E ( m V ) 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 TIME ( µs) 10% 90% OVERSHOOT R L = 2k Ω Tamb = +25˚C V CC = 15V 6 4 2 0 -2 -4 0 0.5 1 1.5 2 2.5 3 3.5IN P U T A N D O U T P U T V O L T A G E S (V ) TIME (m s) -6 = 15VVCC RL = 2 kW = 100pFCL T amb = +25°C OUTPUT INPUT 70 60 50 40 30 20 10 0 E Q U IV A L E N T I N P U T N O IS E V O L T A G E ( n V /V H z) 10 40 100 400 1k 4k 10k 40k 100k FREQUENCY (Hz) A V = 10 R S = 100 Ω Tamb = +25˚C VCC = 15V 1 0.4 0.1 0.04 0.01 0.004 0.001T O T A L H A R M O N IC D IS T O R T IO N (% ) 100 400 1k 4k 10k 40k 100k FREQUENCY (Hz) A V = 1 Tamb = +25˚C V CC = 15V = 6VV O (rms) A V = 1 Tamb = +25˚C = 6VV O (rms) V CC = 15V

Page 8

LF147 - LF247 - LF347 7/10 PARAMETER MEASUREMENT INFORMATION Figure 1 : Voltage Follower Figure 2 : Gain-of-10 Inverting Amplifier TYPICAL APPLICATIONS AUDIO DISTRIBUTOR AMPLIFIER -e I LF347 RL 1/4 CL= 100pF 1k W 10k W eo - 1/4 - - - 1/4 1/4 LF347 1/4 1M W 1m F Output A Output B Output C Input 100k W 100k W 100k W 100k W 100m F VCC+ f = 100kHzO LF347 LF347 LF347

Page 9

LF147 - LF247 - LF347 8/10 TYPICAL APPLICATIONS (continued) POSITIVE FEEDBACK BANDPASS FILTER OUTPUT A OUTPUT B - - 1/4220pF 43k W Input 1.5k W 43k W 220pF 43k W 16k W 1/4 30k W Output A - 1/4 1.5k W 220pF 43k W 220pF 43k W - 1/4 43k W 16k W 30k W Output B Ground LF347 LF347 LF347 LF347 SECOND ORDER BANDPASS FILTER fo = 100kHz; Q = 30; Gain = 16 CASCADED BANDPASS FILTER fo = 100kHz; Q = 69; Gain = 16

Page 10

LF147 - LF247 - LF347 9/10 PACKAGE MECHANICAL DATA 14 PINS - PLASTIC DIP Dim. Millimeters Inches Min. Typ. Max. Min. Typ. Max. a1 0.51 0.020 B 1.39 1.65 0.055 0.065 b 0.5 0.020 b1 0.25 0.010 D 20 0.787 E 8.5 0.335 e 2.54 0.100 e3 15.24 0.600 F 7.1 0.280 i 5.1 0.201 L 3.3 0.130 Z 1.27 2.54 0.050 0.100

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We provide 90 days warranty.

If the items you received were not in perfect quality, we would be responsible for your refund or replacement, but the items must be returned in their original condition.

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