SI4770-77-A20 Datasheet, PDF (9/54 Pages) Silicon Laboratories – HIGH-PERFORMANCE CONSUMER ELECTRONICS

Si4770/77-A20
Table 5. Reference Clock and Crystal Characteristics
Parameter
Symbol
Test Condition
Reference Clock, Pin RCLK
RCLK Supported
Frequencies
Min
Typ
Max
Unit
—
36.4
—
37.8
37.209375
MHz
RCLK Frequency
Tolerance
RCLK = 36.4 MHz, 37.8 MHz, 37.209375 MHz
Phase Noise
100 Hz offset
1 kHz offset
Input Capacitance
10 kHz offset
≥ 100 kHz offset
Input Voltage
AC coupling capacitor = 1 µF
Square wave input
AC coupling capacitor = 1 µF
Sine wave input
Crystal Oscillator, Pins XTAL1, XTAL2
Crystal Frequency
–100
—
100
—
—
–86
—
—
–101
—
—
–108
—
—
–122
—
7
—
400
300
—
900
—
36.4
—
37.8
37.209375
ppm
dBc/Hz
dBc/Hz
dBc/Hz
dBc/Hz
pF
mV_PP
mV_PP
MHz
Crystal Frequency
Tolerance
Load Capacitance, Pro-
grammable, Each Pin to
GND
–100
—
100
ppm
5
—
21.8
pF
Rev. 0.9
9