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DSC2040 डेटा पत्रक PDF( Datasheet डाउनलोड )


डेटा पत्रक - Low-Jitter Configurable HCSL Oscillator - Micrel

भाग संख्या DSC2040
समारोह Low-Jitter Configurable HCSL Oscillator
मैन्युफैक्चरर्स Micrel 
लोगो Micrel लोगो 
पूर्व दर्शन
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<?=DSC2040?> डेटा पत्रक पीडीएफ

DSC2040 pdf
DSC2040
Low-Jitter Configurable 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
NC
Output+
Output-
NC
NC
VDD2
VDD
NC
Pin Type
I
NA
NA
Power
I
I
NA
O
O
NA
NA
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
Most significant bit for frequency selection
Leave unconnected or grounded
Positive HCSL Output
Negative HCSL Output
Leave unconnected or grounded
Leave unconnected or grounded
Power Supply
Power Supply
Leave unconnected or grounded
Operational Description
The DSC2040 is a HCSL oscillator consisting of
a MEMS resonator and a support PLL IC. The
HCSL output is generated through
independent 8-bit programmable dividers from
the output of the internal PLL.
The actual frequency output by the DSC2040
is controlled by an internal pre-programmed
memory (OTP). This memory stores all
coefficients required by the PLL for up to four
different frequencies. Two control pins (FS0
FS1) select the output frequency. Discera
supports customer defined versions of the
DSC2040. Standard frequency options are
described in the following sections.
When Enable (pin 1) is floated or connected to
VDD, the DSC2040 is in operational mode.
Driving Enable to ground will tri-state output
driver (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. Customer defined combinations are available.
Table 1. Pre-programmed pin-selectable output frequency combinations
Ordering
Info
D0001
D000X
Freq
(MHz)
fOUT
fOUT
Freq Select Bits [FS1, FS0] Default is [11]
00 01 10 11
125
156.25
200
100
Contact factory for additional configurations.
Frequency select bit are weakly tied high so if left unconnected the default setting will be [11] and
the device will output the associated frequency highlighted in Bold.
_____________________________________________________________________________________________________________________________ _________________
DSC2040
Page 2
MK-Q-B-P-D-12042610-2

विन्यास 5 पेज
डाउनलोड[ DSC2040 Datasheet.PDF ]


शेयर लिंक


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