Configurable Four Output, Low Jitter Clock Generator for Automotive
Features
• AEC-Q100 Automotive Qualified
• Low RMS Phase Jitter: <1 ps (typ.)
• Complies with PCIe Gen1/2/3/4 Common Clock
Spec
• High Stability: ±25 ppm, ±50 ppm
• Wide Temperature Range:
- Automotive Grade 2: –40°C to +105°C
- Automotive Grade 3: –40°C to +85°C
• High Supply Noise Rejection: –50 dBc
• Four Format-Configurable Outputs:
- LVPECL, LVDS, HCSL, LVCMOS
• Available Pin-Selectable Frequency Table
- 1 Pin per Bank for 2 Frequency Sets
• Wide Frequency Range:
- 2.3 MHz – 460 MHz
• 20-Pin QFN Footprint (5.0 mm x 3.2 mm)
• Excellent Shock and Vibration Immunity
• High Reliability
- 20x better MTF than quartz-based devices
• Wide Supply Range of 2.25V to 3.6V
• Lead Free and RoHS-Compliant
General Description
The DSA400 is a four output clock generator. It utilizes
proven PureSilicon™ MEMS technology to provide
excellent jitter and stability while incorporating
additional device functionality.
The nominal frequencies of the outputs can be identical
or independently derived from common PLLs.
The four output DSA400 MEMS oscillators are
excellent choices for use as clock references in
automotive applications in which small size, low power
consumption, and long-term reliability are paramount.
The DSA400 is AEC-Q100 qualified.
Each output may be configured independently to
support a single-ended LVCMOS interface or a
differential interface. Differential options include
LVPECL, LVDS, or HCSL.
The DSA400 provides two independent select lines for
choosing between two sets of pre-configured
frequencies per bank. It also has two OE pins to allow
for enabling and disabling outputs.
The DSA400 is packaged in a 20-pin QFN (5 mm x
3.2 mm) and is available in extended commercial and
industrial temperature grades.
The DSA400 is a highly configurable device and is
factory programmed to meet the customer’s needs.
Microchip’s
ClockWorks Configurator
must be used to
choose the necessary options, create the final part
number, data sheet, and order samples.
Applications
•
•
•
•
Automotive Infotainment
Automotive ADAS
Autonomous Driving
In-Vehicle Network
Block Diagram
CONTROL
CIRCUITRY
BANK 1
MEMS
PLL
PLL
OE1
OE2
FSB1
FSB2
OUTPUT
CONTROL
AND
DIVIDERS
BANK 2
CLK2+
CLK2-
CLK3+
CLK3-
CLK0+
CLK0-
CLK1+
CLK1-
2020 Microchip Technology Inc.
DS20006356A-page 1
DSA400
1.0
ELECTRICAL CHARACTERISTICS
Absolute Maximum Ratings †
Supply Voltage .......................................................................................................................................... –0.3V to +4.0V
Input Voltage ...................................................................................................................................... –0.3V to V
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