TLC2932
HIGH-PERFORMANCE PHASE-LOCKED LOOP
SLAS097E – SEPTEMBER 1994 – REVISED MAY 1997
operating characteristics over recommended operating free-air temperature range, V
DD
= 5 V
(unless otherwise noted)
VCO section
PARAMETER
fosc
ts(fosc)
tr
tf
Operating oscillation frequency
Time to stable oscillation (see Note 8)
Rise time
Fall time
Duty cycle at VCO OUT
α
(fosc)
kSVS(fosc)
Temperature coefficient of oscillation frequency
Supply voltage coefficient of oscillation frequency
Jitter absolute (see Note 9)
TEST CONDITIONS
RBIAS = 2.2 kΩ, VCO IN = 1/2 VDD
Measured from VCO INHIBIT↓
CL = 15 pF,
CL = 50 pF,
CL = 15 pF,
CL = 50 pF,
See Figure 3
See Figure 3
See Figure 3
See Figure 3
45%
5.5
8
5
6
50%
0.06
0.006
100
55%
%/°C
%/mV
ps
10
MIN
30
TYP
41
MAX
52
10
10
UNIT
MHz
µs
ns
ns
RBIAS = 2.2 kΩ, VCO IN = 1/2 VDD,
RBIAS = 2.2 kΩ, VCO IN = 1/2 VDD,
TA = –20°C to 75°C
RBIAS = 2.2 kΩ, VCO IN = 2.5 V,
VDD = 4.75 V to 5.25 V
RBIAS = 2.2 kΩ
NOTES: 8: The time period to the stable VCO oscillation frequency after the VCO INHIBIT terminal is changed to a low level.
9. The LPF circuit is shown in Figure 28 with calculated values listed in Table 7. Jitter performance is highly dependent on circuit layout
and external device characteristics. The jitter specification was made with a carefully designed PCB with no device socket.
PFD section
PARAMETER
fmax
tPLZ
tPHZ
tPZL
tPZH
tr
tf
Maximum operating frequency
PFD output disable time from low level
PFD output disable time from high level
PFD output enable time to low level
PFD output enable time to high level
Rise time
Fall time
CL = 15 pF
pF,
See Figure 4
See Figures 4 and 5 and Table 4
TEST CONDITIONS
MIN
40
21
20
7.3
6.5
2.3
1.7
40
40
20
20
10
10
TYP
MAX
UNIT
MHz
ns
ns
ns
ns
8
POST OFFICE BOX 655303
•
DALLAS, TEXAS 75265
TI [ TEXAS INSTRUMENTS ]
