SM8707 Datasheet, PDF (10/20 Pages) Nippon Precision Circuits Inc – Clock Generator with Dual PLLs

SM8707 series
SM8707G
f_XTAL = 27.0000MHz, V_DD = 3.3V ± 0.3V, V_SS = 0V, Ta = – 10 to + 75 °C unless otherwise noted.
Parameter
Symbol
Pins
Condition
Rating
Unit
min
typ
max
External input clock
frequency¹
f_XTI
XTI
Applies to external clock input use only
–
27.0000
–
MHz
MO1
C_L = 40 pF, transition between V_OL =
0.2V_DD and V_OH = 0.8V_DD
–
2.0
–
Output clock rise time²
t_r
SO3
C_L = 25 pF, transition between V_OL =
0.2V_DD and V_OH = 0.8V_DD
–
2.0
–
ns
SO1, SO2
C_L = 15pF, transition between V_OL =
0.2V_DD and V_OH = 0.8V_DD
–
2.0
–
MO1
C_L = 40pF, transition between V_OH =
0.8V_DD and V_OL = 0.2V_DD
–
2.0
–
Output clock fall time²
t_f
SO3
C_L = 25pF, transition between V_OH =
0.8V_DD and V_OL = 0.2V_DD
–
2.0
–
ns
SO1, SO2
C_L = 15pF, transition between V_OH =
0.8V_DD and V_OL = 0.2V_DD
–
2.0
–
Output clock jitter³
MO1
t_jitter
(1-sigma)
SO3
Ta = 25°C, C_L = 40pF, V_O = 0.5V_DD
–
20
–
Ta = 25°C, C_L = 25pF, V_O = 0.5V_DD
–
40
–
ps
SO1, SO2
Ta = 25°C, C_L = 15pF, V_O = 0.5V_DD
–
40
–
MO1
Output clock duty cycle²
Dt
SO3
Ta = 25°C, C_L = 40pF, V_O = 0.5V_DD
45
50
55
Ta = 25°C, C_L = 25pF, V_O = 0.5V_DD
45
50
55
%
SO1, SO2
Ta = 25°C, C_L =15 pF, V_O = 0.5V_DD
45
50
55
Power-up time^{2, 4}
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.
NIPPON PRECISION CIRCUITS INC.—10