Overview
The CDCLVD1216RGZR is a 2:16 low additive jitter LVDS buffer produced by Texas Instruments. This device is designed to distribute one of two selectable clock inputs to 16 pairs of differential LVDS clock outputs, ensuring minimal skew for precise clock distribution. It supports a wide range of input types, including LVDS, LVPECL, and LVCMOS, and is optimized for driving 50-Ω transmission lines. The CDCLVD1216RGZR operates within a 2.5V supply environment and is characterized over an industrial temperature range of –40°C to 85°C.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Device Supply Voltage (VCC) | 2.375 | 2.5 | 2.625 | V |
| Ambient Temperature (TA) | –40 | 85 | °C | |
| Input Frequency (fIN) | 800 | MHz | ||
| Differential Input Voltage (VIN, DIFF) | 0.3 | 1.6 | VPP | |
| Differential Output Voltage (|VOD|) | 250 | 450 | mV | |
| Random Additive Jitter (10 kHz to 20 MHz) | 65 | fs, RMS | ||
| Output Skew | 55 | ps | ||
| Package Type | 48-Pin QFN (RGZ) | |||
| ESD Protection | 3 kV HBM, 1 kV CDM |
Key Features
- 2:16 differential buffer distributing one of two selectable clock inputs to 16 pairs of differential LVDS clock outputs.
- Low additive jitter: <300 fs RMS in the 10 kHz to 20 MHz range.
- Low output skew: maximum of 55 ps.
- Universal inputs accepting LVDS, LVPECL, and LVCMOS signals.
- Selectable clock inputs through the IN_SEL control pin.
- LVDS reference voltage (VAC_REF) available for capacitive coupled inputs.
- Clock frequency up to 800 MHz.
- Device power supply: 2.375V to 2.625V.
- Industrial temperature range: –40°C to 85°C.
- Packaged in a 7mm × 7mm, 48-pin QFN (RGZ) package.
- ESD protection exceeds 3 kV HBM and 1 kV CDM.
Applications
- Telecommunications and Networking
- Medical Imaging
- Test and Measurement Equipment
- Wireless Communications
- General Purpose Clocking
Q & A
- What is the primary function of the CDCLVD1216RGZR?
The CDCLVD1216RGZR is a 2:16 low additive jitter LVDS buffer that distributes one of two selectable clock inputs to 16 pairs of differential LVDS clock outputs.
- What types of input signals does the CDCLVD1216RGZR support?
The device supports LVDS, LVPECL, and LVCMOS input signals.
- What is the maximum clock frequency supported by the CDCLVD1216RGZR?
The device supports clock frequencies up to 800 MHz.
- What is the typical additive jitter of the CDCLVD1216RGZR?
The typical additive jitter is less than 300 fs RMS in the 10 kHz to 20 MHz range.
- How is the input selection controlled on the CDCLVD1216RGZR?
The input selection is controlled through the IN_SEL pin.
- What is the operating temperature range of the CDCLVD1216RGZR?
The device operates over an industrial temperature range of –40°C to 85°C.
- What type of package is the CDCLVD1216RGZR available in?
The device is packaged in a 7mm × 7mm, 48-pin QFN (RGZ) package.
- What level of ESD protection does the CDCLVD1216RGZR offer?
The device offers ESD protection exceeding 3 kV HBM and 1 kV CDM.
- How does the CDCLVD1216RGZR handle the absence of an input signal?
The device incorporates an input hysteresis that prevents random oscillation of the outputs in the absence of an input signal.
- What are some common applications for the CDCLVD1216RGZR?
Common applications include telecommunications, medical imaging, test and measurement equipment, wireless communications, and general-purpose clocking.
