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U6359B Datasheet

  • U6359B

  • Frequency Synthesizer for TV Tuner

  • 6頁

  • TEMIC

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U6359B
Frequency Synthesizer for TV Tuner
Description
The U6359B is a single chip PLL frequency synthesizer
with 3-wire bus control. This IC contains an integrated
preamplifier, a high frequency prescaler, a reference
frequency divider, a crystal oscillator, a phase/frequency
detector together with a charge pump, a tuning voltage
amplifier and 4 output ports.
Features
D
D
D
D
D
Integrated prescaler
8 with preamplifier
Input frequency maximum 1024 MHz
Tuning frequency steps 62.5 kHz
14-bit programmable counter
Reference oscillator with 4 MHz crystal
and
512 counter
D
Phase detector (reference frequency 7.8125 kHz)
D
4 programmable port driver
D
Lock output
D
Microcomputer controlled via 3-wire bus
D
SO20 package
Block Diagram
Port 1...4
Enable
Data
3
Clock
4
1/8
14 Bit counter
11 12 13 14
2
Format
control
Shiftregister / latch
18 bit
Port driver
5
8
16
10
V
S
(I
2
L)
GND (I
2
L)
GND (ECL)
PD
RF
i
15
17
Phase
Detector
Charge
pump
9
18
1
VD
V
S
(ECL)
Test 1
Test 2
Oscillator
6
Crystal
7
1/64
1/8
19
20
Lock
Figure 1. Block diagram
12596
Ordering Information
Extended Type Number
U6359B-BFLG3
Package
SO20 plastic package
Remarks
Taped and reeled
TELEFUNKEN Semiconductors
Rev. A1, 18-Sep-96
1 (6)

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