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DSC2022 डेटा पत्रक PDF( Datasheet डाउनलोड )


डेटा पत्रक - Low-Jitter Configurable Dual LVPECL Oscillator - Micrel

भाग संख्या DSC2022
समारोह Low-Jitter Configurable Dual LVPECL Oscillator
मैन्युफैक्चरर्स Micrel 
लोगो Micrel लोगो 
पूर्व दर्शन
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<?=DSC2022?> डेटा पत्रक पीडीएफ

DSC2022 pdf
DSC2022
Low-Jitter Configurable Dual LVPECL Oscillator
Pin Description
Pin No. Pin Name Pin Type
Description
1 Enable
I Enables outputs when high and disables when low
2 NC NA Leave unconnected or grounded
3 NC NA Leave unconnected or grounded
4
GND
Power Ground
5 FS0
I Least significant bit for frequency selection
6 FS1
I Middle bit for frequency selection
7 FS2
I Most significant bit for frequency selection
8 Output1+ O Positive LVPECL Output 1
9 Output1- O Negative LVPECL Output 1
10 Output 2-
O Negative LVPECL Output 2
11 Output 2+ O Positive LVPECL Output 2
12
VDD2
Power Power Supply 2 for LVPECL Output 2
13
VDD
Power Power Supply
14 NC NA Leave unconnected or grounded
Operational Description
The DSC2022 is a dual output LVPECL
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 DSC2022
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 DSC2022.
Standard frequency options are described in in
the following sections.
When Enable (pin 1) is floated or connected to
VDD, the DSC2022 is in operational mode.
Driving Enable to ground will tri-state both
output drivers (hi-impedance mode).
_____________________________________________________________________________________________________________________________ _________________
DSC2022
Page 2
MK-Q-B-P-D-12042605-3

विन्यास 6 पेज
डाउनलोड[ DSC2022 Datasheet.PDF ]


शेयर लिंक


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