TLC2942

HIGH-PERFORMANCE DUAL PHASE-LOCKED LOOP BUILDING BLOCK

SLAS146B – NOVEMBER 1996 – REVISED JUNE 1997

1

POST OFFICE BOX 655303

Technology

Section:

– Complete Oscillator Using Only One

– Recommended Lock Frequency Range:

– Output Frequency...

×1 and ×1/2

Selectable

Phase Frequency Detector (PFD) With

Internal Charge Pump

description

The TLC2942 is a multichip module product that

uses two TLC2932 chips. The TLC2932 chip is

composed of a voltage-controlled oscillator and

an edge-triggered phase frequency detector. The

oscillation frequency range of each VCO is set by

PFD with internal charge pump detects the phase difference between the reference frequency input and signal

frequency input from the external counter. The VCO and the PFD have inhibit functions that can be used as a

power-down mode. The high-speed and stable oscillation capability of the TLC2932 makes the TLC2942

suitable for use in dual high-performance phase-locked loop (PLL) systems.

AVAILABLE OPTIONS

PACKAGE

TA

SMALL OUTLINE

(DB)

–20

°C to 75°C

TLC2942IDB

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

Copyright

© 1997, Texas Instruments Incorporated

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of Texas Instruments

standard warranty. Production processing does not necessarily include

testing of all parameters.

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38

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32

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SELECT1

VCO OUT1

PFD OUT1

LOGIC GND1

GND

NC

NC

NC

GND

SELECT2

VCO OUT2

PFD OUT2

LOGIC GND2

BIAS1

VCOIN1

VCO GND1

VCOINHIBIT1

PFD INHIBIT1

NC

GND

NC

NC

NC

GND

BIAS2

VCOIN2

VCO GND2

VCOINHIBIT2

PFD INHIBIT2

NC

DB PACKAGE

(TOP VIEW)

NC – No internal connection