参数资料
型号: IDT5T2010BBGI
厂商: INTEGRATED DEVICE TECHNOLOGY INC
元件分类: 时钟及定时
英文描述: 5T SERIES, PLL BASED CLOCK DRIVER, 10 TRUE OUTPUT(S), 0 INVERTED OUTPUT(S), PBGA144
封装: GREEN, PLASTIC, BGA-144
文件页数: 21/24页
文件大小: 201K
代理商: IDT5T2010BBGI
6
INDUSTRIALTEMPERATURERANGE
IDT5T2010
2.5V ZERO DELAY PLL CLOCK DRIVER TERACLOCK
EXTERNALDIFFERENTIALFEEDBACK
By providing a dedicated external differential feedback, the IDT5T2010
gives users flexibility with regard to divide selection. The FB and
FB/
VREF2 signals are compared with the input REF[1:0] and
REF[1:0]/VREF[1:0]
signals at the phase detector in order to drive the VCO. Phase differ-
ences cause the VCO of the PLL to adjust upwards or downwards
accordingly.
An internal loop filter moderates the response of the VCO to the
phase detector. The loop filter transfer function has been chosen to
provide minimal jitter (or frequency variation) while still providing accu-
rate responses to input frequency changes.
DIVIDE SELECTION TABLE
DS [1:0]
Divide-by-n
Permitted Output Divide-by-n connected to FB and
FB/VREF2(1)
LL
2
1, 2
LM
3
1
LH
4
1, 2
ML
5
1, 2
M M
1
1, 2, 4
MH
6
1, 2
HL
8
1
HM
10
1
HH
12
1
NOTE:
1. Permissible output division ratios connected to FB and
FB/VREF2. The frequencies of the REF[1:0] and REF[1:0]/VREF[1:0] inputs will be FNOM/N when the parts are configured for
frequency multiplication by using an undivided output for FB and
FB/VREF2 and setting DS[1:0] to N (N = 1-6, 8, 10, 12).
CONTROL SUMMARY TABLE FOR ALL
OUTPUTS
nF2/FBF2
nF1/FBF1
Output Skew
L
Divide by 2
L
H
Zero Delay
H
L
Inverted
H
Divide by 4
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