Overview
The CDCE925PWR is a programmable 2-PLL VCXO clock synthesizer manufactured by Texas Instruments. It is part of the CDCEx925 family, which includes devices with 2-PLL, 5-output configurations. This component is designed to generate highly accurate and flexible clock signals, making it suitable for a wide range of applications. The CDCE925PWR operates in a 1.8-V environment and supports a temperature range of –40°C to 85°C. It is packaged in a 16-pin TSSOP (PW) package and features in-system programmability and nonvolatile EEPROM for storing customer settings.
Key Specifications
| Parameter | Description | Value |
|---|---|---|
| Package | TSSOP (PW) | 16 pins |
| Operating Temperature Range | °C | -40 to 85 |
| Input Clock Frequency | External Crystal or LVCMOS | 8 MHz to 32 MHz |
| Output Frequency Range | LVCMOS | Up to 230 MHz |
| Output Supply Voltage | VDDOUT | 2.5 V to 3.3 V |
| Period Jitter | Typical | 60 ps |
| VCXO Pull Range | ±150 ppm | |
| Load Capacitor Range | Programmable | 0 to 20 pF |
| Supply Current (All PLLs On) | mA | 20 mA per PLL |
| Power-Down Current | µA | 30 µA |
Key Features
- Member of the Programmable Clock Generator Family with 2-PLL and 5-output configurations.
- In-system programmability and nonvolatile EEPROM for storing customer settings.
- Flexible input clocking concept with external crystal (8 MHz to 32 MHz) or LVCMOS clock signal.
- On-chip VCXO with a pull range of ±150 ppm.
- Free selectable output frequency up to 230 MHz.
- Low-noise PLL core with integrated loop filter components.
- Low period jitter (typical 60 ps).
- Separate output supply pins (VDDOUT) supporting 2.5 V to 3.3 V.
- Three user-definable control inputs (S0, S1, S2) for frequency selection, SSC modulation, output enable, power down, and other control features.
- Programmable SSC modulation for EMI reduction.
- Supports 0-PPM clock generation.
- Wide temperature range: –40°C to 85°C.
- Packaged in TSSOP with a development and programming kit available (TI Pro-Clock™).
Applications
- Digital TVs (D-TVs), Set-Top Boxes (STBs), IP-STBs.
- DVD players and DVD recorders.
- Printers.
- Video, audio, USB, IEEE1394, RFID, Bluetooth®, WLAN, Ethernet™, and GPS systems.
- TI-DaVinci™, OMAP™, and DSPs.
Q & A
- What is the CDCE925PWR and what family does it belong to?
The CDCE925PWR is a programmable 2-PLL VCXO clock synthesizer and belongs to the CDCEx925 family of programmable clock generators.
- What is the operating temperature range of the CDCE925PWR?
The operating temperature range is –40°C to 85°C.
- What are the input clock frequency options for the CDCE925PWR?
The input can accept an external crystal (8 MHz to 32 MHz) or an LVCMOS clock signal.
- What is the maximum output frequency of the CDCE925PWR?
The maximum output frequency is up to 230 MHz.
- What are the output supply voltage options for the CDCE925PWR?
The output supply voltage (VDDOUT) can be 2.5 V or 3.3 V.
- What is the typical period jitter of the CDCE925PWR?
The typical period jitter is 60 ps.
- Does the CDCE925PWR support SSC modulation?
Yes, it supports programmable SSC modulation for EMI reduction.
- How many user-definable control inputs does the CDCE925PWR have?
It has three user-definable control inputs (S0, S1, S2).
- What is the package type of the CDCE925PWR?
The CDCE925PWR is packaged in a 16-pin TSSOP (PW) package.
- What are some common applications of the CDCE925PWR?
Common applications include D-TVs, STBs, DVD players, printers, and various digital communication systems.
