LF347DT STMicroelectronics

LF147 - LF247 LF347 WIDE BANDWIDTH QUAD J-FET OPERATIONAL AMPLIFIERS LOW POWER CONSUMPTION + WIDE COMMON-MODE (UP TO V ) AND CC DIFFERENTIAL VOLTAGE RANGE LOW INPUT BIAS AND OFFSET CURRENT OUTPUT SHORT-CIRCUIT PROTECTION N HIGH INPUT IMPEDANCE JFET INPUT DIP14 STAGE (Plastic Package) INTERNAL FREQUENCY COMPENSATION LATCH UP FREE OPERATION HIGH SLEW RATE : 16V/s (typ) D SO14 (Plastic Micropackage) ORDER CODE DESCRIPTION Package Part Number Temperature Range These circuits are high speed JFET input quad ND operational amplifiers incorporating well matched, LF147 -55C, +125C high voltage JFET and bipolar transistors in a LF247 -40C, +105C monolithic integrated circuit. LF347 0C, +70C Example : LF347IN The devices feature high slew rates, low input bias and offset currents, and low offset voltage tem- N = Dual in Line Package (DIP) perature coefficient. D = Small Outline Package (SO) - also available in Tape & Reel (DT) PIN CONNECTIONS (top view) Output 1 1 14 Output 4 Inverting Input 1 2 13 Inverting Input 4 - - + + Non-inverting Input 1 3 12 Non-inverting Input 4 - + V 4 11 V CC CC Non-inverting Input 2 5 10 Non-inverting Input 3 + + - - Inverting Input 2 6 9 Inverting Input 3 Output 2 7 8 Output 3 March 2001 1/10LF147 - LF247 - LF347 SCHEMATIC DIAGRAM (each amplifier) V CC Non-inverting input Inverting input W 100 W 200 Output W 100 30k 8.2k W 1.3k 100 1.3k 35k 35k V CC ABSOLUTE MAXIMUM RATINGS Symbol Parameter LF147 LF247 LF347 Unit 1) V 18 V CC Supply voltage - note 2) V 15 V Input Voltage - note i 3) V 30 V id Differential Input Voltage - note P Power Dissipation 680 mW tot 4) Infinite Output Short-circuit Duration - note T Operating Free-air Temperature Range -55 to +125 -40 to +105 0 to +70 C oper T Storage Temperature Range -65 to +150 C stg 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 V and V . CC CC 2. The magnitude of the input voltage must never exceed the magnitude of the supply voltage or 15 volts, whichever is less. 3. Differential voltages are the non-inverting input terminal with respect to the inverting input terminal. 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 2/10