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LC72121-D-E +BOM

PLL Frequency Synthesizer for Electronic Tuning

Manufacturer:

onsemi
Mfr.Part #:

LC72121-D-E
Datasheet:

LC72121-D-E Datasheet (PDF)
Programmabe:

Not Verified
PLL:

No
Input:

Crystal
Output:

Clock

LC72121-D-E General Description

The LC72121 is high input sensitivity (20 mVrms at 130 MHz) PLL frequency synthesizer for 3 V systems. This IC is serial data compatible with the LC72131, and feature the improved input sensitivity and lower spurious radiation (provided by a redesigned ground system) required in high-performance AM/FM tuner.

Key Features

High-speed programmable divider
FMIN: 10 to 160 MHz . Pulse swallower technique
(With built-in divide-by-2 prescaler)
AMIN: 2 to 40 MHz . Pulse swallower technique
0.5 to 10 MHz . Direct division technique
IF counter
IFIN: 0.4 to 15 MHz . For AM and FM IF counting
Reference frequency
One of 12 reference frequencies can be selected
(using a 4.5 or 7.2 MHz crystal element)
1, 3, 5, 9, 10, 3.125, 6.25, 12.5, 15, 25, 50, and 100 kHz
Phase comparator
Supports dead zone control.
Built-in unlocked state detection circuit
Built-in deadlock clear circuit
An MOS transistor for an active low-pass filter is built in.
I/O ports
Output-only ports: 4 pins
I/O ports: 2 pins
Supports the output of a clock time base signal.
Operating ranges
Supply voltage: 2.7 to 3.6 V
Operating temperature: -40 to 85°C

Application

PLL frequency synthesizer for 3 V systems

Specifications

Series	-	Programmabe	Not Verified
PLL	No	Input	Crystal
Output	Clock	Number of Circuits	1
Ratio - Input:Output	1:1	Differential - Input:Output	No/No
Frequency - Max	160MHz	Divider/Multiplier	Yes/No
Voltage - Supply	2.7V ~ 3.6V	Operating Temperature	-40°C ~ 85°C
Mounting Type	Through Hole	Base Product Number	LC721