si4704 Silicon Laboratories, si4704 Datasheet - Page 15

• Manufacturer Part Number: si4704
• Description: Broadcast Fm Radio Receiver For Consumer Electronics
• Manufacturer: Silicon Laboratories

Table 11. Reference Clock and Crystal Characteristics
(V
RCLK Supported Frequencies
RCLK Frequency Tolerance
REFCLK_PRESCALE
REFCLK
Crystal Oscillator Frequency
Crystal Frequency Tolerance
Board Capacitance
Notes:
DD
1. The Si4704/05 divides the RCLK input by REFCLK_PRESCALE to obtain REFCLK. There are some RCLK
2. A frequency tolerance of
= 2.7 to 5.5 V, V
frequencies between 31.130 kHz and 40 MHz that are not supported. See “AN332: Si47xx Programming Guide,” Table
6 for more details.
Parameter
IO
= 1.85 to 3.6 V, T
2
2
±
1
50 ppm is required for FM seek/tune using 50 kHz channel spacing.
A
= –20 to 85 °C)
Symbol
Crystal Oscillator
Reference Clock
Test Condition
Rev. 1.0
31.130
31.130
–100
–100
Min
—
—
1
Si4704/05-C40
32.768
32.768
32.768
Typ
—
—
—
—
40,000
34.406
4095
Max
100
100
3.5
—
Unit
ppm
ppm
kHz
kHz
kHz
pF
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