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U6220B Datasheet

  • U6220B

  • 1.3 GHz PLL for TV- and VCR- Tuner

  • 183.65KB

  • 14頁

  • TEMIC

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U6220B
1.3 GHz PLL for TV- and VCR- Tuner
Description
The U6220B is a single chip frequency synthesizer with
I
2
C bus and 3-wire bus control (universal bus). This IC
contains a high frequency prescaler, a crystal oscillator,
a switchable reference divider, 5 open collector switching
outputs and an additional mixer switch output for band
switching. The U6220B is especially designed for low
cost, high performance 2-band and EasyLink tuners
(please see application note ANT017 鈥楽emiconductors
for TV Tuners - The New EasyLink Concept鈥?.
Features
D
1.3 GHz divide-by-8 prescaler integrated
D
EasyLink interface to MOSMIC and mixer IC
D
Universal bus:
D
3-wire bus mode:
4 port outputs (open collector)
Lock-signal output (open collector)
I
2
C bus or 3-wire bus
I
2
C bus software compatible to U6204B
3-wire bus software compatible to U6359B (18 bit)
D
Low power consumption (typ. 5 V / 20 mA)
D
Electrostatic protection according to MIL-STD 883
D
SO16 small package
D
I
2
C bus mode:
5 port outputs (open collector)
4 addresses selectable at Pin 3 for multituner
application
Block Diagram
AS / ENA
3
SCL
5
SDA
4
Universal bus
control
2 C鈥揵us or
(I
3鈥搘ire bus)
5 bit latch
6
7
Ports
T1
VHF
VHF L/H
UHF
P6 / Lock
8
9
10
FM Trap
11
MS
7 bit latch
Vs
8 bit latch
6 bit latch
12
15 bit latch
OS
GND
15
14
RFi
T0
8
Prescaler
15 bit counter
5I
FPRD
13
Phase
detector
RD1
CRYSTAL
RD2
Charge
pump
16
VD
1
2
Oscillator
256 / 512 / 1024
FRFD
12426
PD
Figure 1. Block diagram
TELEFUNKEN Semiconductors
Rev. A2, 23-Sep-96
1 (14)
Preliminary Information

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