BA1701 - Rohm

BA1701 VSC system processor IC

Audio ICs VSC∗ system processor IC BA1701 The BA1701 is a monolithic audio-compression system controller IC that uses VSC∗. When used in combination with an analog delay circuit and low-pass filter, it can replay recorded audio at 1 to 2.5 times the recording speed, without altering the pitch. FApplications Audio compression systems for tape-based answerin.

Features

1) Wide operating voltage range (4.5V to 14V). 2) Built-in two-phase sweep oscillator that can directly drive BBD. 3) Built-in motor controller is synchronized with the audio compression ratio. 4) Built-in voltage regulator. FAbsolute maximum ratings (Ta = 25_C) FRecommended operating conditions (Ta = 25_C) ∗ VSC is a trademark of The Variable Speech Control Company. This product is manufactured under licence from VSC Ltd. for use in VSC systems. 861 Audio ICs FBlock diagram BA1701 FElectrical characteristics (unless otherwise noted, Ta = 25_C, VCC = 6V, f = 1kHz, and VIN = 1.5VP-P) 8.