PEF24902HV21ZT Lantiq, PEF24902HV21ZT Datasheet - Page 25

• Manufacturer Part Number: PEF24902HV21ZT
• Manufacturer: Lantiq

Specifications of PEF24902HV21ZT

• Lead Free Status / Rohs Status: Supplier Unconfirmed

Table 6
Parameter
Operating frequency
C
C
Current
Load capacitance
Overall tolerance f/f
Resonance resistance R
Shunt capacitance C
Motional capacitance C
Overall pullability
Note that the load capacitors are integrated in the IEC-4-AFE-X Version 3.2. No
additional capacitance has to be connected neither to XIN nor to XOUT. The crystal
specifications shall meet the requirements given in
A suitable type of crystal would be:
Vibrator:
Application hint: Parasitic capacitances at XIN and XOUT pin, e.g. due to board
capacitances should be below 3 pF.
3.3
The IEC-4-AFE-X Version 3.2 chip gives access to four line ports. The signal to be
transmitted is issued differentially at pins AOUT0..3 and BOUT0..3. The input is
differentially sampled at AIN0..3 and BIN0..3. Each line port consists of three main
function blocks (see
•
•
•
Furthermore a line port contains some special functions. These are:
•
•
Data Sheet
Load
Load
The analog-to-digital converter in the receive path
The digital-to-analog converter in the transmit path
The output filter in the transmit path
Analog test loop-back
Level detect function
= 15 pF
= 7 pF
Mode of vibration
Crystal cut
Analog Line Port
Specification of the Crystal (cont’d)
Figure
0
1
r
4):
Min.
15.35770
9.8
25
210
DS
ATI
25
fundamental
Limit Values
Typ.
1
30
Table
6.
Max.
15.36230
2
10.2
60
7
Functional Description
Rev. 1, 2004-05-28
Unit
MHz
MHz
mA
pF
ppm
pF
fF
ppm
PEB 24902
PEF 24902