ax5051 AXSEM, ax5051 Datasheet - Page 13

• Manufacturer Part Number: ax5051
• Description: Ax5051 Radio
• Manufacturer: AXSEM

4.3.
Crystal Oscillator
SYMBOL
f
gm
C
C
f
RIN
Notes
Version 1.6
XTAL
ext
osc
osc-lsb
osc
osc
1.
2.
AC Characteristics
Tolerances and start-up times depend on the crystal used. Depending on the RF frequency and channel spacing the IC must be calibrated to
the exact crystal frequency using the readings of the register TRKFREQ
If an external clock is used, it should be input via an AC coupling at pin CLK16P with the oscillator powered up and XTALCAP=000000
DESCRIPTION
Crystal frequency
Transconductance oscillator
Programmable tuning
capacitors
at pins CLK16N and CLK16P
Programmable tuning
capacitors, increment per LSB of
XTALCAP
External clock input
Input DC impedance
CONDITION
Note 1
XTALOSCGM=0000
XTALOSCGM=0001
XTALOSCGM =0010
default
XTALOSCGM =0011
XTALOSCGM =0100
XTALOSCGM =0101
XTALOSCGM =0110
XTALOSCGM =0111
XTALOSCGM =1000
XTALOSCGM =1001
XTALOSCGM =1010
XTALOSCGM =1011
XTALOSCGM =1100
XTALOSCGM =1101
XTALOSCGM =1110
XTALOSCGM =1111
XTALCAP = 000000
default
XTALCAP = 111111
Note 2
MIN.
10
TYP.
10.5
6.5
7.5
8.5
9.5
0.5
16
10
11
33
16
1
2
3
4
5
6
7
8
9
2
Datasheet AX5051
MAX.
Specifications
UNIT
MHz
MHz
mS
kΩ
pF
pF
pF
13