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Part: LF347DT
Category:
Description: Wide Bandwidth Quad J-FET Operational Amplifiers
Company: ST Microelectronics, Inc.
Datasheet: Download LF347DT datasheet File size : 82 kB
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Datasheet text preview:
LF147 - LF247 LF347
WIDE BA NDWIDTH QUAD J-FET OPE RATIONAL AMPLIFIERS
s LOW POWER CONSUMPTION s WIDE COMMON-MODE (UP TO VC C+) AND
DIFFERENTIAL VOLTAGE RANGE
s LOW INPUT BIAS AND OFFSET CURRENT s OUTPUT SHORT-CIRCUIT PROTECTION s HIGH INPUT IMPEDANCE JFET INPUT
STAGE
N DIP 14 (Pla stic P ackage)
s INTERNAL FREQUENCY COMPENSATION s LATCH UP FREE OPERATION s HIGH SLEW RATE : 16V/µs (typ)
D SO14 ( Plastic Mic ropackag e)
DESCRIPTION These circuits are high speed JFET input quad operational amplifiers incorporating well matched, high v oltage JFET and bipolar t ransistors in a monolithic integrated circuit. The devices feature high slew rates, low input bias and offset currents, and low of fset voltage temperature coefficient. PIN CONNECTIONS (top view)
ORDER CODE
Package Part N umbe r Temperature Rang e N LF 147 LF 247 LF 347 Ex ampl e : LF347IN -55°C, +125°C -40°C, +105°C 0°C, +70° C · · · D · · ·
N = D ual in L ine P ackage (DIP) D = Small Outline Package ( SO) - also available i n Tape & Reel (DT)
Output 1 1 Inverting Input 1 2 Non-inverting Input 1 3 VC C + 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
1/10
LF147 - L F2 47 - L F34 7
SCHEMATIC D IAGRAM (each amplifier)
VC C
No n -inve rting inp u t
Inve rting inpu t
100 100
30k
200
O u tp u t
8 .2 k
1 . 3k
VC C
35k
1. 3k
35k
100
ABSOLUTE MAXIMUM RATINGS
S ymbol VCC Vi Vid Ptot Toper Tstg
1. 2. 3. 4.
Parameter Su pply voltage - note Inp ut Voltage - note Po wer D issipation Ou tput S hort- circuit Duration - note Sto rage Temperature Range
4) 2) 1)
LF1 47
LF2 47
L F347
Unit V V V mW
± 18 ± 15 ± 30 680 Infinite -55 to +125 -40 to +1 05 -65 to +1 50 0 to +7 0
Differential I nput Voltage - n ote 3)
Op erating Free-air Temperature Range
°C °C
All voltage values, except differential voltage, a re with r espect to the zero reference level (ground) o f the s upply voltages where the zero reference level is the midpoint between VCC + a nd VCC -. T he magnitude of the input voltage must never exceed the magnitude of the s upply voltage or 15 v olts, w hichever is less. Differential voltages are the non-inverting input terminal with r espect to the inverting input terminal. T he output may b e shorted to g round o r to either supply. T emperature a nd/or supply voltages must be li mited to ensure that the dissipation rating is n ot exceeded
2/10
LF147 - LF 24 7 - LF3 47
ELECTRICAL CHARACTERISTICS VCC = ±15V, Tamb = +25°C (unless otherwise specified)
Symbol Vio DV io Iio P arameter I nput Offs et Voltage (Rs = 10k ) Tamb = 25°C Tm in Tamb Tmax I nput Offs et Voltage Drift I nput Offs et Current - note Ta mb = 25°C Tmin T amb T max
1)
Min .
Typ. 3 10 5
Max. 10 13
U nit mV
µV/° C 1 00 4 200 20 pA nA pA nA V /mV
Iib
I nput Bias C urrent - note 1 Tamb = 25°C Tmin Tamb Tm ax Large Signal Voltage G ain (RL = 2k, Vo = ± 10V) , Tamb = 25°C Tmin Tamb Tm ax S upply Voltage R ejection Ratio (RS = 10k ) Tamb = 25°C Tmin T amb Tmax S upply Current, P er A mp, no Load Ta mb = 25°C Tmin T amb T max I nput Common M ode Voltage Range C ommon M ode R ejection Ratio (RS = 10k ) Tamb = 25°C T min Tam b Tm ax O utput Short-Circuit Current Tamb = 25°C Tmin Tamb Tm ax O utput Voltage Swing Tamb = 25°C RL RL RL RL = 2 k = 10k = 2 k = 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
ICC V icm CM R
70 70 10 10 10 12 10 12 12
IOS
40
60 60 V
± Vopp
Tmin Tamb Tm ax
12 13. 5
SR tr Kov GB P Ri THD
S lew R ate Vi = 10V, R L = 2k , CL = 100pF, Tamb = 25°C , unity gain R ise Time Vi = 20mV, RL = 2k,CL = 100pF, Tamb = 25°C , unity gain O vershoot Vi = 20mV, RL = 2k, C L = 100pF, Tamb = 25°C , unity gain G ain B andwidth Product f =1 00kHz, Tamb = 25°C , Vin = 10mV, R L =2k, C L = 100pF I nput Resistance Total H armonic Distortion f =1k Hz, Av = 20dB, RL = 2k, C L = 100pF Tamb = 25°C, VO = 2Vpp E quivalent Input Noise Voltage (R S = 100, f = 1KHz)
V/µs 16 µs 0.1 % 10 MHz 2.5 4 1012 % 0.0 1 15 45 120 nV ---------Hz Degrees dB
en
m P hase Margin Vo1/Vo2 C hannel Separation ( Av = 100)
1.
T he input bias currents a re junction leakage c urrents which approximately d ouble for every 10°C increase in the junction temperature.
3/1 0
Others parts begin by lf
LF-1 LF-2 LF-3 LF-4 LF-5 LF-6 LF-7
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