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TLC2943 Datasheet, PDF (8/27 Pages) Texas Instruments – HIGH-PERFORMANCE DUAL PHASE-LOCKED BUILDING BLOCK | |||
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TLC2943
HIGH-PERFORMANCE DUAL PHASE-LOCKED BUILDING BLOCK
SLAS249 â NOVEMBER 1999
electrical characteristics over recommended operating free-air temperature range, VDD = 3 V
(unless otherwise noted)
VCO section
PARAMETER
TEST CONDITIONS
MIN NOM MAX UNIT
VOH
VOL
V(TH+)
II
Z(VCOIN)
IDD(INH)
IDD(VCO)
High-level output voltage
Low-level output voltage
Positive input threshold voltage
Input current
VCOIN input impedance
VCO supply current (inhibit) (for one chip)
VCO supply current (for one chip)
IOH = â 2 mA
IOL = 2 mA
VI = VDD or GND
VCOIN = 1/2VDD
See Note 5
See Note 6
2.4
0.9 1.5
10
0.01
5.1
V
0.3 V
2.1 V
± 1 µA
Mâ¦
1 µA
15 mA
NOTES: 5. The current into VCO VDD and LOGIC VDD when VCO INHIBIT = VDD and PFD INHIBIT is high.
6. The current into VCO VDD and LOGIC VDD when VCO IN = 1/2 VDD , RBIAS = 2.4 kâ¦, VCO INHIBIT = ground, and PFD INHIBIT
is high.
PFD section
PARAMETER
TEST CONDITIONS
MIN NOM MAX UNIT
VOH
VOL
IOZ
VIH
VIL
V(TH+)
High-level output voltage
Low-level output voltage
High-impedance state output current
High-level input voltage at FINâA, FINâB
Low-level input voltage at FINâA, FINâB
Positive input threshold voltage at PFD
INHIBIT
IOH = â 2 mA
IOL = 2 mA
PFD INHIBIT = high,
VO = VDD or GND
2.7
V
0.2 V
± 1 µA
2.1
V
0.9 V
0.9 1.5 2.1 V
CI
Input capacitance at FINâA, FINâB
5
pF
ZI
Input impedance at FINâA, FINâB
10
Mâ¦
IDD(PFD) PFD supply current
See Note 7
0.7
4 mA
NOTE 7: The current into LOGIC VDD when FINâA and FINâB = 30 MHz (V I(PP) = 3 V, rectangular wave), PFD INHIBIT = GND, PFD OUT open,
and VCO OUT is inhibited.
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