BC41B143A-ds-001Pe CSR, BC41B143A-ds-001Pe Datasheet - Page 60

• Manufacturer Part Number: BC41B143A-ds-001Pe
• Description: Blue Core ROM
• Manufacturer: CSR

10.3.7 Crystal Oscillator Characteristics
Note:
Conditions:
BC41B143A-ds-001Pe
Graph shows results for BlueCore4-ROM crystal driver at maximum drive level.
C
Crystal C
Transconductance setting = 2mA/V
Loop gain = 3
C
1000.0
trim
t1
100.0
10.0
/C
Figure 10.8: Crystal Load Capacitance and Series Resistance Limits with Crystal Frequency
= 3.4pF centre value
t2
2.5
= 3
o
= 2pF
8 MHz
20 MHz
32 MHz
3.5
4.5
Crystal Load Capacitance and Series Resistance Limits with Crystal Frequency
12 MHz
24 MHz
This material is subject to CSR’s non-disclosure agreement
5.5
© Cambridge Silicon Radio Limited 2005
16 MHz
28 MHz
Production Information
6.5
Load Capacitance (pF)
7.5
8.5
9.5
Device Terminal Descriptions
10.5
11.5
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12.5