TLC2934IPW Datasheet, PDF (1/10 Pages) Texas Instruments – 3.3 V 130 MHZ VCO, PHASE FREQUENCY DETECTOR

TLC2934
3.3 V 130 MHZ VCO, PHASE FREQUENCY DETECTOR
D Voltage-Controlled Oscillator (VCO)
– Ring Oscillator Using Only One
External Biasing Resistor (R_BIAS)
D Recommended Lock Frequency
– 100 MHz to 130 MHz
– (V_DD = 3.3 V + 5%, T_A = –20°C to 75°C)
D Phase-Frequency Detector (PFD)
Includes a High-Speed Edge-Triggered
Detector With Internal Charge Pump
D Independent VCO, PFD Power-Down
Mode
D Thin Small-Outline Package (14
Terminal)
D Compatible Pin Assignment to
TLC2932, TLC2933
LOGIC V_DD
SELECT
VCO OUT
FIN -A
FIN -B
PFD OUT
LOGIC GND
SLAS306 – NOVEMBER 2000
PW PACKAGE
(TOP VIEW)
1
14
VCO V_DD
2
13
R_BIAS
3
12
V_{CO IN}
4
11
VCO GND
5
10
VCO INHIBIT
6
9
PFD INHIBIT
7
8
TEST
description
The TLC2934, a mixed signal IC designed for phase-locked-loop (PLL) systems, is composed of a
voltage-controlled oscillator (VCO) and an edge-triggered-type phase frequency detector (PFD).
The internal VCO is based on the TLC2932 and TLC2933s ring oscillator. It oscillates in wider frequency with
lower supply voltage, and it has stable oscillating performance. The oscillation function, provided by only one
external resistor connection, supplies bias to the VCI internal circuit. Oscillator range is covered from 10 MHz
to 130 MHz with a 3.3-V supply voltage. The VCO has an inhibit function to stop oscillation and for the
power-down mode.
The internal PFD, a high-speed rising edge triggered type, has an internal charge pump with a high-impedance
output buffer. The PFD detects phase difference between the reference frequency input and the signal
frequency input from the VCO output through an external counter device. This functions the same as TLC2932
and TLC2933. The PFD also has the inhibit function for stop phase comparison and for power-down mode.
block diagram
f(OSC)
Through
or 1/2
TLC29341PW
VCO
Ring
Oscillator
Bias
Control
PFD OUT
Ring
Oscillator
PFD
Bias Supply
Control Voltage
VCO INHIBIT
Reference Input
Comparison Input
PFD INHIBIT
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.
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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Copyright © 2000, Texas Instruments Incorporated
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