TLC2933IPWR datasheet(9/21 Pages) TI

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TLC2933

HIGH-PERFORMANCE PHASE-LOCKED LOOP

SLAS136A – APRIL 1996 – REVISED JUNE 1997

POST OFFICE BOX 655303

• DALLAS, TEXAS 75265

PARAMETER MEASUREMENT INFORMATION

90%

10%

90%

10%

VCO OUT

Figure 3. VCO Output Voltage Waveform

50%

90%

10%

50%

tPHZ

tPLZ

VDD

GND

VDD

GND

VDD

GND

VDD

GND

VDD

GND

VDD

GND

FIN– A†

FIN– B†

PFD INHIBIT

PFD OUT

(a) PFD OUT Hi-Z Timing To and From a High Level

(see Figure 5 and Table 3)

(b) PFD OUT Hi-Z Timing To and From a Low Level

(see Figure 5 and Table 3)

† FIN–A and FIN–B are for reference phase only, not for timing.

90%

tPZL

tPZH

Hi-Z

VOH

50%

VOL

50%

Hi-Z

Figure 4. PFD Output Voltage Waveform

Table 3. PFD Output Test Conditions

PARAMETER

tPZH

tPHZ

Open

Closed

Ω

15 pF

tPZL

1 k

Ω

15 pF

tPLZ

Closed

Open

Test Point

PFD OUT

DUT

VDD

Figure 5. PFD Output Test Conditions

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