uPD861C
HD42851
uPD2814C
PLL Integrated Circuits

Programmable Divider - Divide by 3 to 255
10-Bit Divider
Phase Detector
Reference Oscillator Circuit
On-Chip Filter Amplifier
Code Converter
Only Two or Three Crystals Required for CD Radio AM Frequency Selection
Unlocked Signals are Detected at Instant Stop "IS" Terminal
Two Type Program Mode can be Selected to Change Input Mode Level:
M: Low Level - Binary Code Input Enables, Divided by 3 to 255
M: High Level - BCD Code Enables that the Data at P1 to P6 Port is Offset 90 by Code Converter
Internal Active Filter Amplifier has a Long Holding Time due to Very High Input Impedance
Characteristics of the CMOS - this is to Obtain Very Good Spurious Response
Output Signal of the "I" can be Used to Stop the Spurious Radiation when the Channel Selector Makes
Misprogramming such as Rotary Switch's Lose Contact
High Speed and Low Power Consumption due to CMOS
Single Power Supply and Fully TTL Compatible: VDD = 5V ±0.5V
Operating Temperature: TA = -30Á to +65ÁC
Pull Down Resistors Installed in Program and Mode Switch Inputs

PinNameDecription
1P1Binary programable input 1
2P2Binary programable input 2
3P3Binary programable input 3
4P4Binary programable input 4
5P5Binary programable input 5
6P6Binary programable input 6
7P7Binary programable input 7
8P8Binary programable input 8
91/2RReferency frequency divided by 2
10RIReferency oscillator Input (X-tal)
11RORefeerency oscillator Output (X-tal)
12VDDPositive Power Supply (+5Volt)
13FINVCO Oscillator Input
14MSMode Select - HIGH=40 Channels BDC/ROM LOW=Binary input (N=3-255)
15PDOProgramable Divider Output
16LDILoop Detector Input (from Reference Divider)
17RDOReference Divider Output
18LDILoop Detector Input (from Programmable Divider)
19AOLoop filter Amplifier Output
20AILoop filter Amplifier Input
21PDIProgramable Divider Input
22PD outPhase Detector output
23GNDGround
24IInhibit

This counter shows the number of hits since the 29th January 2000

Go Back To The Components Page

Go Back To The Main Home Page


Copyright © The Defpom 1997-2008

https://www.radiomods.co.nz/