UPC1852

UPC1851B : .

UPC1853 : Ground for analog signal. Pin voltage: approx. 0.0 V 23 2 FC1 VCC 36 kΩ 18 kΩ VCC 36 kΩ Capacitor connection pin which determines time constant of phase shifter. Pin voltage: approx. 6.0 V 2 0.1 µF 3 FC2 VCC 36 kΩ 18 kΩ VCC 36 kΩ 3 2200 pF 4 FC3 VCC 36 kΩ 18 kΩ VCC 36 kΩ 4 0.022 µF 8 µPC1853 Table 1-1 Explanation of Pins (2/8) Pin Number 5 Pin Name FC4 Equivalent Circuit Description Capacitor connection pin which determines time constant of phase shifter. Pin voltage: approx. 6.0 V VCC 36 kΩ 18 kΩ VCC 36 kΩ 5 0.022 µF 6 LF2 VCC 17.7 kΩ Low-pass filter. Pin voltage: approx. 6.0 V 17.7 kΩ VCC 6 1000 pF 7 RTC VCC 7.5 kΩ 5.8 kΩ VCC 3 kΩ Capacitor connection pin for trebl.

UPC1854A : DATA SHEET BIPOLAR ANALOG INTEGRATED CIRCUIT µPC1854A I2C BUS-COMPATIBLE US MTS PROCESSING LSI The µPC1854A is an integrated circuit for US MTS (Multichannel Television Sound) system with the addition of the I2C bus interface. All functions required for US MTS system are incorporated on a single chip. The µPC1854A allows users to switch modes and adjust filter and separation circuits through the I2C bus. FEATURES • Stereo demodulation, SAP (Sub Audio Program) demodulation, dbx noise reduction decoding, and I2C bus interface incorporated on a single chip • Mode switching and filter/separation adjustments through the I2C bus • Power supply: 8 V to 10 V • On-chip input attenuator for simpl.

UPC1857A : The µPC1857A is a sound control IC with I2C bus. It has functions to control volume, balance, and tone, and a phase shift matrix surround function. The surround function achieves wide sound expansion using only two front speakers. Three modes can be selected: movie mode that increases the presence of sound with stereo sound input, music mode emphasizing vocal music, and simulated mode that gives expansion and left and right sound depth with monaural sound input. The µPC1857A can perform all control (mode switching, volume control and so on) using I2C. FEATURES • Volume control function • Balance control function : Attenuation adjustable from 0 to −80 dB in 64 steps : The difference in atten.