Microchip Technology DSA504RT Six-Output Programmable Clock Generator
Microchip Technology DSA504RT Six-Output Programmable Clock Generator provides radiation-tolerant timing for space, aerospace, and defense systems. This programmable clock generator produces multiple synchronized frequencies from a single external clock reference, helping reduce the need for separate oscillators and buffers in complex spacecraft timing designs. The DSA504RT integrates a low-jitter fractional-divide APLL, two fractional dividers with spread-spectrum capability, two integer dividers, and six configurable output buffers. An internal crosspoint switch routes generated frequencies to any output, while each output can support differential formats or paired single-ended LVCMOS outputs. Microchip Technology DSA504RT also supports PCIe Gen1 to Gen7 compliant outputs and includes I2C configuration for timing control.
Features
- Low-jitter fractional-divide APLL with spread-spectrum-capable fractional dividers
- Integrated crosspoint switch for flexible frequency routing to each output
- Configurable output buffers for differential or paired single-ended operation
- Six-output any-frequency programmable clock generation
- Independent output format selection with separate output supplies
- Standby mode for reduced power use when inactive
- I2C interface and OTP configuration for autonomous startup
Applications
- Timing architectures operating during GNSS outages or disruptions
- Systems using radiation-tolerant or radiation-hardened FPGAs and MCUs
- Spacecraft timing distribution
- Aerospace and defense systems
- Navigation, communications, and scientific instrument timing
Specifications
- External reference frequency range
- 10MHz to 250MHz external differential clock
- 10MHz to 200MHz external LVCMOS clock
- Output frequency range
- Differential output
- 0.35MHz to 250MHz (LPHCSL)
- 0.35MHz to 662MHz (LVDS, LVPECL)
- 0.35mHz to 200MHz LVCMOS output
- Differential output
- PCIe Gen1 to Gen 7 compliant outputs
- -55°C to +125°C temperature range
- 1.71V to 3.63V operating voltage
- Packages
- VQFN28, 28-lead thin quad flat no-lead, 4mm x 4mm body size
- CQFP32, 32-lead ceramic quad flat, 16mm x 16mm body size
Functional Block Diagram
