Overview
The CDCE925PWRG4, produced by Texas Instruments, is a modular PLL-based low-cost, high-performance, programmable clock synthesizer, multiplier, and divider. This component is part of the CDCEx925 family and is designed to generate highly accurate clocks for various applications. It features a flexible input clocking concept, supporting external crystals or LVCMOS clock signals, and can produce up to five output clocks from a single input frequency.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Operating Temperature Range | -40 to 85 | °C |
| Output Frequency (Max) | 230 | MHz |
| Output Level | LVCMOS | |
| Output Skew | 150 | ps |
| Period Jitter (Typical) | 60 | ps |
| On-Chip VCXO Pull Range | ±150 | ppm |
| Device Power Supply (CDCE925) | 3.3 V, 2.5 V | |
| Device Power Supply (CDCEL925) | 1.8 V | |
| Package Type | TSSOP (16 pins) | |
| Package Size | 5.00 mm x 4.40 mm |
Key Features
- In-System Programmability and EEPROM for storing customer settings
- Serial Programmable Volatile Register
- Flexible Input Clocking Concept: External Crystal (8 MHz to 32 MHz) or LVCMOS clock signal
- On-Chip VCXO with ±150 ppm pull range
- Single-Ended LVCMOS outputs up to 160 MHz
- Free Selectable Output Frequency up to 230 MHz
- Low-Noise PLL Core with integrated PLL loop filter components
- Low Period Jitter (Typical 60 ps)
- Separate Output Supply Pins (3.3 V, 2.5 V for CDCE925; 1.8 V for CDCEL925)
- Flexible Clock Driver with three user-definable control inputs (S0, S1, S2) for frequency switching, SSC selection, output enable, or power down
- Programmable SSC Modulation for reducing EMI
- Enables 0-PPM clock generation
- Wide Temperature Range: –40°C to 85°C
- Development and Programming Kit (TI Pro-Clock™) for easy PLL design and programming
Applications
- Digital TVs (D-TVs)
- Set-Top Boxes (STBs) and IP-STBs
- DVD Players and DVD Recorders
- Printers
- Video, Audio, USB, IEEE1394, RFID, Bluetooth®, WLAN, Ethernet™, and GPS systems
- Clock generation for TI-DaVinci™, OMAP™, and DSPs
Q & A
- What is the maximum output frequency of the CDCE925PWRG4?
The maximum output frequency is up to 230 MHz.
- What types of clock signals can the CDCE925PWRG4 accept as input?
The component can accept external crystals (8 MHz to 32 MHz) or LVCMOS clock signals.
- What is the typical period jitter of the CDCE925PWRG4?
The typical period jitter is 60 ps.
- What is the operating temperature range of the CDCE925PWRG4?
The operating temperature range is –40°C to 85°C.
- What package type and size does the CDCE925PWRG4 come in?
The component is packaged in a 16-pin TSSOP with dimensions of 5.00 mm x 4.40 mm.
- Does the CDCE925PWRG4 support in-system programming?
- What are the user-definable control inputs used for?
The three user-definable control inputs (S0, S1, S2) can be used for frequency switching, SSC selection, output enable, or power down.
- Can the CDCE925PWRG4 generate 0-PPM clocks?
- What are some common applications of the CDCE925PWRG4?
- Is there a development and programming kit available for the CDCE925PWRG4?
