UA747C

Philips Semiconductors Linear Products Product specification Dual operational amplifier µA747C DESCRIPTION The 747 is a pair of high-performance monolithic operational amplifiers constructed on a single silicon chip. High common-mode voltage range and absence of “latch-up” make the 747 ideal for use as a voltage-follower. The high gain and wide range of operating voltage provides superior performance in integrator, summing amplifier, and general feedback applications. The 747 is short-circuit protected and requires no external components for frequency compensation. The internal 6dB/octave roll-off insures stability in closed-loop applications. For single amplifier performance, see µA741 data sheet. PIN CONFIGURATION N Package INV. INPUT A 1 NON–INVERTING INPUT A 2 OFFSET NULL A 3 – A + 14 OFFSET NULL A 13 V + A 12 OUTPUT A 11 NO CONNECT 10 OUTPUT B + –B 9 V+B 8 OFFSET NULL B V– 4 OFFSET NULL B 5 NON–INVERTING INPUT B 6 INVERTING INPUT B 7 FEATURES TOP VIEW No frequency compensation required Short-circuit protection Offset voltage null capability Large common-mode and differential voltage ranges Low power consumption No latch-up ORDERING INFORMATION DESCRIPTION 14-Pin Plastic DIP TEMPERATURE RANGE 0°C to 70°C ORDER CODE µA747CN DWG # 0405B EQUIVALENT SCHEMATIC INVERTING INPUT V+ Q8 Q9 Q12 Q13 Q14 NON–INVERTING INPUT Q1 Q2 30pF Q3 Q4 R5 39KΩ Q16 Q7 Q5 OFFSET NULL Q6 Q10 Q11 Q22 R7 4.5Ω Q18 Q15 R8 7.5KΩ R9 25Ω OUTPUT Q17 R10 50Ω Q20 R1 1KΩ R3 50KΩ R2...