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DSC2044 डेटा पत्रक PDF( Datasheet डाउनलोड )


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

भाग संख्या DSC2044
समारोह Low-Jitter Configurable Dual HCSL Oscillator
मैन्युफैक्चरर्स Micrel Semiconductor 
लोगो Micrel Semiconductor लोगो 
पूर्व दर्शन
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<?=DSC2044?> डेटा पत्रक पीडीएफ

DSC2044 pdf
DSC2044
Low-Jitter Configurable Dual HCSL 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 HCSL Output 1
Negative HCSL Output 1
Negative HCSL Output 2
Positive HCSL Output 2
Power Supply for HCSL Output 2
Power Supply
Leave unconnected or grounded
Operational Description
The DSC2044 is a dual output HCSL 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 DSC2044
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 DSC2044.
Standard frequency options are described in in
the following sections.
When Enable (pin 1) is floated or connected to
VDD, the DSC2044 is in operational mode.
Driving Enable to ground will tri-state both
output drivers (hi-impedance mode).
_____________________________________________________________________________________________________________________________ _________________
DSC2044
Page 2
MK-Q-B-P-D-12042614-2

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डाउनलोड[ DSC2044 Datasheet.PDF ]


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