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SP8854EIGHCAR Datasheet

  • SP8854EIGHCAR

  • 2·7GHz Parallel Load Professional Synthesiser

  • 178.96KB

  • 13頁(yè)

  • MITEL

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SP8854E
2路7GHz Parallel Load Professional Synthesiser
Preliminary Information
Supersedes January 1996 version, DS4238 - 1.2
DS4238 - 2.0 June 1998
The SP8854E is one of a family of parallel load synthesisers
containing all the elements apart from the loop amplifier to
fabricate a PLL synthesis loop. Other parts in the series are
the SP8852E which is fully programmable, requiring tw0 16-
bit words to set the RF and reference counters and the
SP8855E which is fully programmable using hard wired links
or switches.
The SP8854E is programmed using a 16-bit parallel data
bus. Data is stored in an internal buffer. The 10-bit program-
mable reference divider is programmed by connecting the 10
programming pins either to ground or
15V.
The device can
therefore be programmed with a single transfer from the
control microprocessor. Hard wired inputs can also control
the
F
PD
and F
REF
outputs and the control sense of the loop.
DATA BIT 5
DATA BIT 6
DATA BIT 7
DATA BIT 8
DATA BIT 9
DATA BIT 10
DATA BIT 11
DATA BIT 12
DATA BIT 13
DATA BIT 14
DATA BIT 15
FEATURES
s
2路7 GHz Operating Frequency
s
Single 5V Supply
s
Low Power Consumption <1路3W
s
High Comparison Frequency : 20MHz
s
High Gain Phase Detector : 1mA/rad
s
Zero 鈥楧ead Band鈥?Phase Detector
s
Wide Range of RF and Reference Division Ratios
s
Programming by Single Word Data Transfer
ABSOLUTE MAXIMUM RATINGS
Supply voltage
Operating temperature
Storage temperature
Prescaler and reference input voltage
Data inputs
Junction temperature
20路3V
to
16V
255擄C
to1100擄C
265擄C
to
1150擄C
2路5V p-p
V
CC
10路3V
V
EE
20路3V
1175擄C
DATA BIT 4
DATA BIT 3
DATA BIT 2
DATA BIT 1
DATA BIT 0
0V (PRESCALER)
RF INPUT
RF INPUT
V
CC
(PRESCALER)
VEE
LOCK DETECT
1 44
SP8854E
STROBE
REF DIV BIT 0
REF DIV BIT 1
REF DIV BIT 2
REF DIV BIT 3
REF DIV BIT 4
REF DIV BIT 5
REF DIV BIT 6
REF DIV BIT 7
REF DIV BIT 8
REF DIV BIT 9
C-LOCK DETECT
R
SET
CHARGE PUMP OUTPUT
CHARGE PUMP REF
F
PD
/F
REF
ENABLE
CONTROL DIRECTION
F
PD
*
F
REF
*
V
CC
REF OSC CAPACITOR
REF IN/CRYSTAL
HC44
*F
PD
and F
REF
outputs are reversed using the control
direction input, pin 23. The above diagram is correct
when pin 23 is high.
Fig. 1 Pin connections - top view
THERMAL DATA
ORDERING INFORMATION
SP8854E KG HCAR
Non-standard temperature range,
255擄C
to
1100擄C,
standard product screening
SP8854E IG HCAR
Industrial temperature range,
240擄C
to
185擄C,
standard product screening
u
JC
= 5擄C/W
u
JA
= 53擄C/W
ESD PROTECTION
1000V, human body model

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