SM8706A Datasheet, PDF (4/8 Pages) Nippon Precision Circuits Inc – Clock Generator for DVD Players

SM8706A
AC Electrical Characteristics
f_XTAL = 36.8640MHz, V_DD = 3.0V ± 0.3V, V_SS = 0V, Ta = – 40 to 85 °C unless otherwise noted.
Parameter
Symbol
Condition
Rating
Unit
min
typ
max
External input clock frequency¹
f_XTI
XTI, applies to external clock input use only
–
36.8640
–
MHz
Output clock rise time²
MO1, SO1, SO2, C_L = 25 pF, transition
between V_OL = 0.2V_DD and V_OH = 0.8V_DD
–
2.0
–
t_r
Outputs excluding MO1, SO1, SO2, and XTO,
ns
C_L = 15pF, transition between V_OL = 0.2V_DD
–
2.0
–
and V_OH = 0.8V_DD
Output clock fall time²
MO1, SO1, SO2, C_L = 25pF, transition
between V_OH = 0.8V_DD and V_OL = 0.2V_DD
–
2.0
–
t_f
Outputs excluding MO1, SO1, SO2, and XTO,
ns
C_L = 15pF, transition between V_OH = 0.8V_DD
–
2.0
–
and V_OL = 0.2V_DD
Output clock jitter³
MO1, SO1, SO2, Ta = 25°C, C_L = 25pF, V_O =
t_jitter
0.5V_DD
–
(1-sigma) _{Outputs excluding MO1, SO1, SO2, and XTO,}
Ta = 25°C, C_L = 15pF, V_O = 0.5V_DD
–
40
40
–
–
ps
Output clock duty cycle²
Settling time²
Power-up time^2,4
MO1, SO1, SO2, Ta = 25°C, C_L = 25pF, V_O =
0.5V_DD
45
50
55
Dt
%
Outputs excluding MO1, SO1, SO2, and XTO,
Ta = 25°C, C_L =15 pF, V_O = 0.5V_DD
45
50
55
t_S
All outputs excluding XTO
–
–
1
µs
t_P
All outputs excluding XTO
–
1
5
ms
1. When using an external clock input, the XTI duty should be 50% with 3.3V clock signal amplitude level. The input signal voltage should not exceed the
absolute maximum rating, otherwise damage may occur.
2. The numeric values are measured values obtained using the circuit in Figure 1 and the NPC standard evaluation board.
3. The numeric values are measured values obtained using the circuit in Figure 2 and the NPC standard evaluation board.
4. This is the time, after the supply is turned ON from the OFF state, until the output clock reaches ± 0.1% of the specified frequency.
36.864MHz
DUT
DUT:Device under testing
Active Probe
(HP1152A)
Passive Probe
(HP10435A)
Oscilloscope
(Infinium
HP54845A)
Frequency &
Time Interval
Analyzer
(HP5371A)
Figure 1. Measurement circuit 1
36.864MHz
DUT
Active Probe
(HP54701A)
DUT:Device under testing
Oscilloscope
(HP54720D
+HP54721A)
Jitter
Measurement
System
(ASA, M1)
Figure 2. Measurement circuit 2
NIPPON PRECISION CIRCUITS—4