MB88156 View Datasheet(PDF) - Fujitsu
Part Name
Description
MFG CO.
'MB88156' PDF : 25 Pages View PDF
■ BLOCK DIAGRAM
VDD
MB88156
XPD
ENS
SPRD
FREQ
MLTP1,
MLTP0
SEL
Power down
Modulation enable
setting
Modulation type
setting/frequency
down setting
Frequency setting
Multiplication rate
setting
Modulation level
setting/frequency
falling width setting
PLL block
Modulation
clock output
CKOUT
XOUT
Reference clock
XIN
Power down signal
Rf = 1 MΩ
Reference clock output
REFOUT/N.C.
VSS
1
−
M
Reference clock 1
−
N
Phase
compare
Charge
pump
V/I
conversion
Loop filter
IDAC
ICO
Modulation
clock output
Modulation level setting/
frequency falling width setting
1
−
Modulation logic
SEL
ENS
L
MB88156 PLL block
A glitchless IDAC (current output D/A converter) provides precise modulation, thereby dramatically
reducing EMI.
9
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