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DSC2033 डेटा पत्रक PDF( Datasheet डाउनलोड )


डेटा पत्रक - Low-Jitter Configurable Dual LVDS Oscillator - Micrel Semiconductor

भाग संख्या DSC2033
समारोह Low-Jitter Configurable Dual LVDS Oscillator
मैन्युफैक्चरर्स Micrel Semiconductor 
लोगो Micrel Semiconductor लोगो 
पूर्व दर्शन
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<?=DSC2033?> डेटा पत्रक पीडीएफ

DSC2033 pdf
DSC2033
Low-Jitter Configurable Dual LVDS Oscillator
Pin Description
Pin No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
Pin Name
Enable
NC
NC
GND
FS0
FS1
FS2
Output1+
Output1-
Output 2-
Output 2+
VDD2
VDD
NC
Pin Type
I
NA
NA
Power
I
I
I
O
O
O
O
Power
Power
NA
Description
Enables outputs when high and disables when low
Leave unconnected or grounded
Leave unconnected or grounded
Ground
Least significant bit for frequency selection
Middle bit for frequency selection
Most significant bit for frequency selection
Positive LVDS Output 1
Negative LVDS Output 1
Negative LVDS Output 2
Positive LVDS Output 2
Power Supply 2 for LVDS Output 2
Power Supply
Leave unconnected or grounded
Operational Description
The DSC2033 is a dual output LVDS oscillator
consisting of a MEMS resonator and a support
PLL IC. The two outputs are generated
through independent 8-bit programmable
dividers from the output of the internal PLL.
Two constraints are imposed on the output
frequencies: 1) f2=M x f1/N, where M and N
are even integers between 4 and 254, 2)
1.2GHz < N x f2 < 1.7GHz.
The actual frequencies output by the DSC2033
are controlled by an internal pre-programmed
memory (OTP). This memory stores all
coefficients required by the PLL for up to eight
different frequency combinations. Three
control pins (FS0 FS2) select the output
frequency combination. Discera supports
customer defined versions of the DSC2033.
Standard frequency options are described in in
the following sections.
When Enable (pin 1) is floated or connected to
VDD, the DSC2033 is in operational mode.
Driving Enable to ground will tri-state both
output drivers (hi-impedance mode).
Output Clock Frequencies
Table 1 lists the standard frequency configurations and the associated ordering information to be
used in conjunction with the ordering code above. Customer defined combinations are available.
Table 1. Pre-programmed pin-selectable output frequency combinations
Ordering
Info
Freq
(MHz)
Freq Select Bits [FS2, FS1, FS0] Default is [111]
000 001 010 011 100 101 110 111
G0001
G0002
fOUT1
fOUT2
fOUT1
fOUT1
148.5
74.25
100
100
156.25
125
125
125
150
125
0
0
125
25
0
0
125
50
0
0
100
50
0
0
100 400
75 200
00
00
GXXXX
fOUT1
fOUT2
Contact factory for additional configurations.
Frequency select bit are weakly tied high so if left unconnected the default setting will be [1] and
the device will output the associated frequency highlighted in Bold.
_____________________________________________________________________________________________________________________________ _________________
DSC2033
Page 2
MK-Q-B-P-D-12042609-2

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डाउनलोड[ DSC2033 Datasheet.PDF ]


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