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DSC2130 Datasheet

Low-Jitter I2C/SPI Programmable LVDS Oscillator

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DSC2130 DSC2230
Low-Jitter I2C/SPI Programmable LVDS Oscillator
Datasheet
General Description
The DSC2130 and DSC2230 series of
programmable, high-performance LVDS
oscillators utilizes a proven silicon MEMS
technology to provide excellent jitter and
stability while incorporating high output
frequency flexibility. DSC2130 and DSC2230
allow the user to modify the output
frequency using I2C or SPI interface,
respectively. User can also select from two
pre-programmed default output frequencies
using the control pin.
DSC2130 and DSC2230 are packaged in 14-
pin 3.2x2.5 mm QFN packages and available
in temperature grades from Ext. Commercial
to industrial.
Block Diagram
Features
Low RMS Phase Jitter: <1 ps (typ)
High Stability: ±10, ±25, ±50 ppm
Wide Temperature Range
o Industrial: -40° to 85° C
o Ext. commercial: -20° to 70° C
High Supply Noise Rejection: -50 dBc
I2C/SPI Programmable Output Freq
Short Lead Times: 2 Weeks
Wide Freq. Range:
o LVDS Output: 2.3 to 460 MHz
Miniature Footprint of 3.2x2.5mm
Excellent Shock & Vibration Immunity
o Qualified to MIL-STD-883
High Reliability
o 20x better MTF than quartz oscillators
Supply Range of 2.25 to 3.6 V
Lead Free & RoHS Compliant
Pin #
3
5
6
7
DSC2130 (I2C)
NC
SDA
SCL
CS_bar
DSC2230 (SPI)
SCLK
MOSI
MISO
SS
Applications
Consumer Electronics
Storage Area Networks
o SATA, SAS, Fibre Channel
Passive Optical Networks
o EPON, 10G-EPON, GPON, 10G-PON
Ethernet
o 1G, 10GBASE-T/KR/LR/SR, and FCoE
HD/SD/SDI Video & Surveillance
PCI Express
_____________________________________________________________________________________________________________________________ _________________
DSC2130 DSC2230
Page 1
MK-Q-B-P-D-12050106




Discera

DSC2130 Datasheet Preview

DSC2130 Datasheet

Low-Jitter I2C/SPI Programmable LVDS Oscillator

No Preview Available !

DSC2130 DSC2230
Low-Jitter I2C/SPI Programmable 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
SCLK
GND
SDA
MOSI
SCL
MISO
CS_bar
SS
Output1+
Output1-
NC
NC
VDD2
VDD
FS
Pin Type
I
NA
NA
I
Power
I
I
O
I
I
O
O
NA
NA
Power
Power
I
Description
Enables outputs when high and disables when low
Leave unconnected or grounded
DSC2130: Leave unconnected or grounded
DSC2230: Serial clock from master
Ground
DSC2130: I2C Serial Data
DSC2230: SPI Serial Data from Master to Slave
DSC2130: I2C Serial Clock
DSC2230: SPI Serial Data from Slave to Master
DSC2130: I2C Chip Select (Active Low)
DSC2230: SPI Slave Select (Active Low)
Positive LVDS Output
Negative LVDS Output
Leave unconnected or grounded
Leave unconnected or grounded
Power Supply
Power Supply
Default output clock frequency bit
Operational Description
The DSC2130/2230 is a LVDS oscillator
consisting of a MEMS resonator and a support
PLL IC. The LVDS output is generated
through independent 8-bit programmable
dividers from the output of the internal PLL.
DSC2130/2230 allows for easy programming
of the output frequencies using I2C/SPI
interface. Upon power-up, the initial output
frequency is controlled by an internal pre-
programmed memory (OTP). This memory
stores all coefficients required by the PLL for
two different default frequencies. The control
pin (FS) selects the initial frequency. Once
the device is powered up, a new output
frequency can be programmed. Programming
details are provided in the Programming
Guide. Standard default frequencies are
described in the following sections. Discera
supports customer defined versions of the
DSC2130/2230.
When Enable (pin 1) is floated or connected to
VDD, the DSC2130/2230 is in operational
mode. Driving Enable to ground will disable
both output drivers (hi-impedance mode).
_____________________________________________________________________________________________________________________________ _________________
DSC2130 DSC2230
Page 2
MK-Q-B-P-D-12050106


Part Number DSC2130
Description Low-Jitter I2C/SPI Programmable LVDS Oscillator
Maker Discera
Total Page 6 Pages
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