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UPC1854AGT の電気的特性と機能

UPC1854AGTのメーカーはNECです、この部品の機能は「I2C BUS-COMPATIBLE US MTS PROCESSING LSI」です。


製品の詳細 ( Datasheet PDF )

部品番号 UPC1854AGT
部品説明 I2C BUS-COMPATIBLE US MTS PROCESSING LSI
メーカ NEC
ロゴ NEC ロゴ 




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UPC1854AGT Datasheet, UPC1854AGT PDF,ピン配置, 機能
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 simple interface with intermediate frequency processing IC (I2C bus control)
• Output level: 1.4 Vp-p (with L+R signals, 100% modulation)
APPLICATIONS
• TV sets and VCRs for north America
ORDERING INFORMATION
Part Number
µPC1854ACT
µPC1854AGT
Package
28-pin plastic SDIP (10.16 mm (400))
28-pin plastic SOP (9.53 mm (375))
The µPC1854A 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. S12816EJ3V0DS00 (3rd edition)
Date Published June 2000 N CP(K)
Printed in Japan
The mark shows major revised points.
©
1997

1 Page





UPC1854AGT pdf, ピン配列
µPC1854A
BLOCK DIAGRAM
9V
VCC
1
22 µF
VRE
+
2
1/2 VCC
PD1
3
0.1 µF
PD2
4
Pilot
Discrimination
Phase
Comparator
De-
emphasis
L–R
AM
Demodulator
L+R
LPF
Pilot
Canceller
Offset
Absorption
Mode
Selector
Offset
Absorption
Matrix
4.7 µF
1 kφD1
++
1 µF
φD2
5
6
2.2 µF
COM
+
7
0.1 µF
SOA
+
8
0.047 µF
SDT
9
Stereo
VCO
1/4
1/2 ST VCO
Stereo
Phase
Comparator
D/A
D/A
Input
Attenuator
Stereo
LPF
Noise
BPF
Offset
Absorption
SAP
BPF
0.47 µF
+
NDT
10
68 k
Noise
Detector
SAP
Detector
Phase
Detector
ST VCO
SAP VCO
Filter
ST/SAP
SW
LPF Filter
fH Trap
2fH
Trap
Wide-
Band
VCA
Wide-
Band
RMS
Filter
Wide-
Band
RMS
D/A
Timing
Current
D/A
Spectral
RMS
Filter
Spectral
RMS
External
dbx NR
SOT
11
0.1 µF
SI
12
ESA
13
AGND
14
Loop
Filter
SAP
LPF
D/A
SAP
VCO
1/2 SAP VCO
408 Hz
LPF
Variable
Emphasis
2.19 kHz
LPF
Offset
Absorption
Filter
Adjuster
D/A
I2C Bus
Interface
1 µF
MOA
28
+
10 µF
LOT
27
+
10 µF
ROT
26
+
10 µF
NOT
25
+
1 µF
VOA
24
+
10 µF
WTI
23
+
3.3 µF
STI
22
+
ITI
21
1.6 k15 k
1 µF
WRB
20
5.1 k+
SRB
19
3 k
1 µF
+
dO
18
1 µF
+
DGND
17
SCL
16
SDA
15
Remark Use the following for external parts.
Resistor : Metal film resistor (±1 %) for an ITI pin (pin 21). Unless otherwise specified; ±5 %
Capacitor : Tantalum capacitor (±10 %) for STI and WTI pins (pins 22 and 23). Unless otherwise
specified; ±20 %
Data Sheet S12816EJ3V0DS00
3


3Pages


UPC1854AGT 電子部品, 半導体
1. PIN EQUIVALENT CIRCUITS
Pin No.
Pin Name
1 Power (9 V)
Symbol
VCC
µPC1854A
Internal Equivalent Circuit
(1/7)
2 1/2 VCC Filter
3 Pilot Discrimination Filter 1
VRE
20 k
20 k
2
5 k
20 k10 k
VCC
10 k10 k
10 k
5 k
20 k
GND
PD1
VCC
3
15 k15 k5 k
4 Pilot Discrimination Filter 2
PD2
1
2
V CC
VCC
15 k15 k5 k
4
6 Data Sheet S12816EJ3V0DS00

6 Page



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部品番号部品説明メーカ
UPC1854AGT

I2C BUS-COMPATIBLE US MTS PROCESSING LSI

NEC
NEC


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