LF253DT STMicroelectronics

LF253, LF353 Wide bandwidth dual JFET operational amplifiers Features Low power consumption + Wide common-mode (up to V ) and CC differential voltage range N Low input bias and offset current DIP8 Output short-circuit protection (Plastic package) High input impedance JFET input stage Internal frequency compensation Latch up free operation High slew rate 16 V/s (typical) D SO-8 Description (Plastic micro package) These circuits are high speed JFET input dual operational amplifiers incorporating well matched, Pin connections high voltage JFET and bipolar transistors in a (top view) monolithic integrated circuit. The devices feature high slew rates, low input bias and offset currents, and low offset voltage temperature coefficient. 1 - Output1 2 - Inverting input 1 3 - Non-inverting input 1 - 4 - V CC 5 - Non-inverting input 2 6 - Inverting input 2 7 - Output 2 + 8 - V CC March 2010 Doc ID 2153 Rev 3 1/15 www.st.com 15Schematics LF253, LF353 1 Schematics Figure 1. Schematic diagram (each amplifier) VCC+ Non-inverting input Inverting input 100 200 Output 100 30k 8.2 k 1.3 k 100 1.3 k 35 k 35 k VCC- Offset Null1 Offset Null2 2/15 Doc ID 2153 Rev 3