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also paragraph Amplifier with Automatic Level Control
(ALC).
DC and AC Characteristics
Oscillator: Pin XIN, XOUT
In production the actual oscillation of the oscillator and duty cycle will not be tested. The production test will be based on
the static parameters and the inversion from XIN to XOUT in order to guarantee the functionality of the oscillator.
Table 5. OSCILLATOR
Parameter
Crystal frequency
Duty cycle with quartz connected
Start−up time
Load capacitance external crystal
Series resistance external crystal
Maximum Capacitive load on
XOUT
Low input threshold voltage
High input threshold voltage
Low output voltage
High input voltage
1. Guaranteed by design. Maximum allowed series loss resistance is 80 W
NCN49597
ELECTRICAL CHARACTERISTICS
Test Conditions
(Note 1)
(Note 1)
(Note 1)
(Note 1)
(Note 1)
XIN used as clock input
XIN used as clock input
XIN used as clock input
XIN used as clock input,
XOUT = 2 mA
XIN used as clock input
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8
SCK, SDI, SDO, CSB
These signals from the SPI interface to an optional
external Flash. See Reference 1.
Symbol
Min
f
−100 ppm
CLK
40
T
startup
C
L
R
20
S
CL
XOUT
VIL
0.3 V
XOUT
DD
VIH
XOUT
VOL
XOUT
VOH
XOUT
Typ
Max
Unit
48
+100 ppm
MHz
60
%
50
ms
18
pF
40
80
W
50
pF
V
0.7 V
V
DD
0.3
V
V
− 0.3
V
DD
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