UPC1854A View Datasheet(PDF) - NEC => Renesas Technology
Part Name
Description
Manufacturer
UPC1854A Datasheet PDF : 48 Pages
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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
L+R
AM
LPF
Demodulator
Pilot
Canceller
Offset
Absorption
Mode
Selector
Offset
Absorption
Matrix
1 kΩ φD1
5
+
4.7 µF
+
1 µF
φD2
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 kΩ
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 kΩ 15 kΩ
1 µF
WRB
20
5.1 kΩ +
1 µF
SRB
19
3 kΩ +
1 µF
dO
18
+
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
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