TLC2934 Datasheet, PDF (2/8 Pages) Texas Instruments – 3.3 V 130 MHZ VCO, PHASE FREQUENCY DETECTOR

TLC2934
3.3 V 130 MHZ VCO, PHASE FREQUENCY DETECTOR
SLAS306 – NOVEMBER 2000
Terminal Functions
TERMINAL
NAME
NO.
FIN-A,
4
FIN-B
5
LOGIC GND
7
LOGIC VDD
1
PFD INHIBIT
9
PFD OUT
6
RBIAS
13
SELECT
2
TEST
8
VCO GND
11
VCO OUT
3
VCO INHIBIT
10
VCO _IN
12
VCO VDD
14
I/O
DESCRIPTION
I Frequency signal inputs for PFD. The reference frequency signal (fREF-IN) and the VCO output signal
through the external counter device are applied to these terminals. When the LPF design is the lag-lead filter
(passive filter and noninverting), f(REF-IN) is input to FIN-A, and the VCO output signal is to FIN-B.
GND terminal for the internal logic circuit
Power supply terminal for the internal logic circuit. This power supply terminal separates from VCO VDD to
reduce cross-coupling between supplies.
I PFD INHIBIT (power-down) control signal input terminal
O PFD output terminal. When PFD INHIBIT is high, PFD OUT is in the high-impedance state.
I Bias resistor (RBIAS) terminal. Connect a resistor between VCO GND and this terminal to supply bias to
internal VCO circuit. TLC2934 bias resistor connection is different from TLC2932 and TLC2933, where bias
resistor RBIAS _{is connected} to VCO VDD.
I 1/2 divider select terminal. L=through output, H=1/2 output.
Test terminal. Use for production test. Tie to GND when in normal use.
GND terminal for internal VCO
O VCO output terminal. When VCO INHIBIT = high, VCO OUT is low.
I VCO INHIBIT (power-down) control signal input terminal
I VCO control voltage input terminal. Normally, The external LPF is connected to this terminal.
Power supply terminal for the internal VCO circuit. This power supply terminal should be separate from
LOGIC VDD to reduce cross-coupling between supplies.
absolute maximum ratings over operating free-air temperature (unless otherwise noted)^†
Supply voltage (each supply), V_DD (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.5 V to 4 V
Input voltage range (each input), V_I (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.5 V to V_DD + 0.5 V
Input current (each input), I_I . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±20 mA
Output current (each output), I_O . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±20 mA
Continuous total power dissipation at (or below) T_A = 25_C (see Note 2), P_D . . . . . . . . . . . . . . . . . . . 700 mW
Operating free-air temperature range. T_A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 20°C to 75°C
Storage temperature range, T_stg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 65°C to 150°C
Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 260°C
† _{Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and}
functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not
implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
NOTES: 1. All voltage values are with respect to network ground terminal.
2. For operation above 25°C free–air temperature, derate linearly at the rate of 5.6 mW/°C
2
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