Overview
The CDCLVD1212RHAR, produced by Texas Instruments, is a low additive jitter, 2:12 differential buffer designed for high-performance clock distribution. This device is part of the CDCLVD1212 series and is packaged in a 6-mm × 6-mm, 40-pin VQFN (RHA) package. It is capable of accepting two selectable clock inputs and distributing them to 12 pairs of differential LVDS clock outputs, making it ideal for applications requiring precise clock signal distribution with minimal skew.
Key Specifications
| Parameter | Value |
|---|---|
| Number of Outputs | 12 |
| Max Output Frequency | Up to 800 MHz |
| Propagation Delay (Max) | 2.5 ns |
| Output Type | LVDS |
| Input Types | LVDS, LVPECL, LVCMOS |
| Power Supply Voltage | 2.375 V to 2.625 V |
| Operating Temperature Range | –40°C to 85°C |
| Package Type | 40-Pin VQFN (RHA) |
| Low Additive Jitter | < 300 fs RMS (10 kHz to 20 MHz) |
| Low Output Skew | 35 ps (Maximum) |
| ESD Protection | Exceeds 3 kV HBM, 1 kV CDM |
Key Features
- Low additive jitter: < 300 fs RMS in the 10 kHz to 20 MHz range.
- Low output skew of 35 ps (Maximum).
- Universal inputs accept LVDS, LVPECL, and LVCMOS signals.
- Selectable clock inputs through the control pin (IN_SEL).
- 12 LVDS outputs, ANSI EIA/TIA-644A standard compatible.
- Device power supply: 2.375 V to 2.625 V.
- LVDS reference voltage (VAC_REF) available for capacitive coupled inputs.
- Industrial temperature range: –40°C to 85°C.
- ESD protection exceeds 3 kV HBM, 1 kV CDM.
Applications
- Telecommunications and Networking
- Medical Imaging
- Test and Measurement Equipment
- Wireless Communications
- General-Purpose Clocking
Q & A
- What is the maximum output frequency of the CDCLVD1212RHAR? The maximum output frequency is up to 800 MHz.
- What types of input signals can the CDCLVD1212RHAR accept? The device can accept LVDS, LVPECL, and LVCMOS input signals.
- How many LVDS outputs does the CDCLVD1212RHAR have? The device has 12 pairs of differential LVDS clock outputs.
- What is the operating temperature range of the CDCLVD1212RHAR? The operating temperature range is –40°C to 85°C.
- What is the package type of the CDCLVD1212RHAR? The device is packaged in a 40-Pin VQFN (RHA) package.
- What is the low additive jitter specification of the CDCLVD1212RHAR? The low additive jitter is < 300 fs RMS in the 10 kHz to 20 MHz range.
- How does the IN_SEL pin function in the CDCLVD1212RHAR? The IN_SEL pin selects the input which is routed to the outputs. If left open, it disables the outputs.
- What is the ESD protection level of the CDCLVD1212RHAR? The ESD protection exceeds 3 kV HBM, 1 kV CDM.
- Can the CDCLVD1212RHAR be used in single-ended mode? Yes, but the appropriate bias voltage (VAC_REF) must be applied to the unused negative input pin.
- What are some typical applications of the CDCLVD1212RHAR? Typical applications include telecommunications, medical imaging, test and measurement equipment, wireless communications, and general-purpose clocking.
