参数资料
型号: B900J24PXX12I
元件分类: 数字信号处理
英文描述: 0-BIT, 80 MHz, OTHER DSP, PQFP44
文件页数: 94/100页
文件大小: 1547K
代理商: B900J24PXX12I
Advance Data Sheet
B900
July 1999
Baseband Signal Processor
Lucent Technologies Inc.
93
9 Crystal Oscillator Electrical Requirements and Characteristics (continued)
9.1
Crystal Oscillator (continued)
9.1.3 Crystal Oscillator Negative Resistance Curves (continued)
Figure 26 shows worst-case negative resistance curves for a crystal oscillator operating with a 3.3 V power supply
(VDD = 3.0 V to 3.6 V). These worst-case conditions are as follows:
s
Maximum temperature = 120
°C
s
Minimum VDD = 3.0 V
s
Maximum CO = 7 pF
Note: VDD = 3 V.
5-6155 (F)
Figure 26. 3.3 V Crystal Oscillator Negative Resistance Curves
0
C1 = C2 = 2 pF
C1 = C2 = 4 pF
C1 = C2 = 6 pF
C1 = C2 = 8 pF
C1 = C2 = 10 pF
C1 = C2 = 12 pF
C1 = C2 = 14 pF
C1 = C2 = 16 pF
C1 = C2 = 20 pF
C1 = C2 = 18 pF
24
68
10
–220
–200
–180
–160
–140
–120
–100
–80
–60
–40
–20
FREQUENCY (MHz)
NEGATIVE
RE
SISTANCE
(
)
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