Overview
The CDCP1803RGER, produced by Texas Instruments, is a highly versatile clock driver designed for efficient distribution of clock signals. This component distributes one pair of differential clock inputs to three pairs of LVPECL (Low-Voltage Positive Emitter-Coupled Logic) differential clock outputs, ensuring minimal skew for optimal clock distribution. It is specifically engineered for driving 50-Ω transmission lines and operates within a temperature range of –40°C to 85°C, making it suitable for a wide range of environmental conditions.
Key Specifications
| Parameter | Value | Parameter | Value |
|---|---|---|---|
| Function | Differential, Fanout | Additive RMS jitter (typ) (fs) | 150 |
| Output frequency (max) (MHz) | 800 | Number of outputs | 3 |
| Output supply voltage (V) | 3.3 | Core supply voltage (V) | 3.3 |
| Output skew (ps) | 15 | Operating temperature range (°C) | -40 to 85 |
| Output type | LVPECL | Package | 24-Terminal QFN (4 mm × 4 mm) |
| Signaling Rate | Up to 800-MHz LVPECL | Input Signal Type | Differential: LVDS, HSTL, CML, VML, SSTL-2; Single-Ended: LVTTL/LVCMOS |
| Receiver Input Threshold | ±75 mV | VBB Bias Voltage Output | For single-ended input signals |
Key Features
- Distributes one differential clock input to three LVPECL differential clock outputs with minimum skew.
- Programmable output divider for two LVPECL outputs.
- Low-output skew of 15 ps (typical).
- Operates with a VCC range of 3 V–3.6 V.
- Signaling rate up to 800-MHz LVPECL.
- Differential input stage for wide common-mode range.
- Provides VBB bias voltage output for single-ended input signals.
- Receiver input threshold of ±75 mV.
- 24-Terminal QFN package (4 mm × 4 mm).
- Accepts various differential and single-ended signaling types: LVDS, HSTL, CML, VML, SSTL-2, and LVTTL/LVCMOS.
Applications
The CDCP1803RGER is ideal for applications requiring precise and reliable clock signal distribution. It is particularly suited for:
- High-speed data transmission systems where minimal clock skew is critical.
- Telecommunication equipment that requires accurate clock distribution.
- Networking devices, such as routers and switches, that demand high-quality clock signals.
- Embedded systems and industrial control systems that need reliable clock distribution.
- Any application requiring the distribution of differential clock signals with low jitter and skew.
Q & A
- Q: What is the primary function of the CDCP1803RGER?
A: The CDCP1803RGER distributes one differential clock input to three LVPECL differential clock outputs with minimal skew.
- Q: What is the maximum output frequency of the CDCP1803RGER?
A: The maximum output frequency is up to 800 MHz.
- Q: What is the typical output skew of the CDCP1803RGER?
A: The typical output skew is 15 ps.
- Q: What is the operating temperature range of the CDCP1803RGER?
A: The operating temperature range is from –40°C to 85°C.
- Q: What types of input signals does the CDCP1803RGER accept?
A: It accepts differential signaling types such as LVDS, HSTL, CML, VML, SSTL-2, and single-ended signaling types like LVTTL/LVCMOS.
- Q: How does the CDCP1803RGER handle single-ended input signals?
A: It provides a VBB bias voltage output that can be used as a common-mode voltage reference for single-ended input signals.
- Q: What is the package type of the CDCP1803RGER?
A: It comes in a 24-Terminal QFN package (4 mm × 4 mm).
- Q: Can the CDCP1803RGER be used in high-speed applications?
A: Yes, it is designed for high-speed applications with a signaling rate up to 800-MHz LVPECL.
- Q: How do I select different output mode settings on the CDCP1803RGER?
A: You can select different output mode settings using the three control terminals S0, S1, and S2.
- Q: Is the CDCP1803RGER RoHS compliant?
A: Yes, the CDCP1803RGER is RoHS compliant.
