DATA SHEET
BIPOLAR ANALOG INTEGRATED CIRCUIT
µ
PC1851B
I
2
C BUS-COMPATIBLE US MTS PROCESSING LSI
The
µ
PC1851B is an integrated circuit for US MTS (Multiplexed Television Sound) system with the addition of
the I
2
C bus interface. All functions required for US MTS system are incorporated on a single chip.
The
µ
PC1851B allows users to switch modes, control volume and tone, and adjust the separation circuit
through the I
2
C bus.
FEATURES
• Stereo demodulation, SAP (Sub Audio Program) demodulation, dbx noise reduction decoding, I
2
C bus interface,
input selector (2 channels), surround processor (1 phase), volume and tone control circuits incorporated on a single
chip
• Mode switching, volume and tone control, and separation adjustment through the I
2
C bus
• Power supply: 8 V to 10 V
• On-chip input attenuator for simple interface with intermediate frequency processing IC (I
2
C bus control)
• Output level: 1.4 V
p-p
(with L+R signals, 100 % modulation)
APPLICATION
• TV sets and VCRs for north America
ORDERING INFORMATION
Part Number
Package
42-pin plastic SDIP (15.24 mm (600))
µ
PC1851BCU
The
µ
PC1851B is available only to licensees of THAT Corporation.
For information, please call: (508) 229-2500 (U.S.A), or (03) 5790-5391 (Tokyo).
The information in this document is subject to change without notice. Before using this document, please
confirm that this is the latest version.
Not all devices/types available in every country. Please check with local NEC representative for availability
and additional information.
Document No. S13417EJ2V0DS00 (2nd edition)
Date Published June 2000 N CP(K)
Printed in Japan
The mark
shows major revised points.
©
1998
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