CDCM6208VFRGZR - 2:8 Low Jitter Clock Generator | TI
N.º de pieza: CDCM6208VFRGZR ✓ Activo| Cant. | Precio unitario | Total |
|---|---|---|
| 1 | $12.5 | $12,50 |
| 10 | $11.25 | $112,50 |
| 100 | $10 | $1.000,00 |
| 500 | $9 | $4.500,00 |
| 1.000 | $8.1 | $8.100,00 |
CDCM6208VFRGZR Descripción general
A clock generator is a device that produces timing signals from a reference oscillator, often using phase-locked loops (PLLs) to synthesize multiple frequencies. The CDCM6208 belongs to the clock and timing IC family, which is essential in digital systems for synchronizing data converters, processors, and serial links. Its jitter cleaning capability reduces phase noise from noisy references, making it critical for high-speed communication and precision instrumentation.
Key features include two independent PLLs, each with a fractional divider, allowing flexible frequency synthesis. The device supports both LVCMOS and LVPECL/LVDS output formats, with programmable output swing and slew rate. It offers a low jitter performance of typically 0.5 ps RMS (12 kHz to 20 MHz), which is suitable for demanding applications. The CDCM6208 also includes a serial interface (SPI or I2C) for configuration, and a power-down mode to reduce consumption.
Technically, the CDCM6208 uses a fractional-N PLL architecture with a delta-sigma modulator to achieve fine frequency resolution. It integrates loop filters and voltage-controlled oscillators (VCOs) covering a wide frequency range. The device supports hitless switching between references, ensuring glitch-free operation during clock redundancy. Its low power consumption of typically 1.2 W makes it suitable for power-sensitive systems.
Typical applications include data converters (ADC/DAC) clocking, Ethernet switches, optical transport, and wireless base stations. The CDCM6208 is also used in broadcast video and test equipment where precise timing is essential. Its ability to generate multiple synchronized clocks from a single reference simplifies board design and reduces component count.
When designing with the CDCM6208, ensure proper decoupling of the power supply pins and use a clean ground plane to minimize noise. The device requires an external crystal or reference clock; the loop filter components should be placed close to the pins to optimize jitter performance. Thermal management is important due to the exposed pad; a thermal via array is recommended.
Alternativas directas para CDCM6208VFRGZR — mismo encapsulado, compatible pin a pin. Se excluyen las piezas de otro encapsulado que requieren retrabajo de la PCB.
Variantes de esta serie
Modelos de la misma serie compatibles directamente con CDCM6208VFRGZR (mismo factor de forma y huella) — difiere en Package, Interface, Number of Outputs.
Herramienta de comparación rápida — seleccione piezas alternativas para compararlas lado a lado:
CDCM6208V2RGZR
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
CDCM6208V1FRGZR
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
CDCM6208V1RGZR
✅ Sustitución directa ⚠️ Especificaciones sin verificar📋 Alternativa de referencia (no en el catálogo)
LMK5C33216RGCR
✅ Sustitución directa ⚠️ Especificaciones sin verificar✓ En stock
$35 / unidad
Ver hoja de datos →LMK00306SQX/NOPB
✅ Sustitución directa ⚠️ Especificaciones sin verificar✓ En stock
$3.88 / unidad
Ver hoja de datos →CDCM6208VFRGZR Especificaciones
| Output Frequency | Up to 800 MHz |
| Número de salidas | 8 |
| Number of Inputs | 2 |
| Output Logic | LVPECL, LVDS, HCSL, LVCMOS |
| Jitter (RMS) | 0.5 ps (12 kHz to 20 MHz) |
| Tensión de alimentación | 3.3 V |
| Power Consumption | 1.2 W (typical) |
| Encapsulado | 48-VQFN (RGZ) |
| Temperatura de funcionamiento | -40C to +85C |
| Interfaz | SPI, I2C |
| PLLs | 2 |
| Fractional Dividers | Yes |
| Hitless Switching | Yes |
| RoHS | Compliant |
| Tipo de montaje | Surface Mount |
Configuración de pines de CDCM6208VFRGZR
| Pin 1 | VDD — Power supply |
| Pin 2 | GND — Ground |
| Pin 3 | IN0 — Reference input 0 |
| Pin 4 | IN1 — Reference input 1 |
| Pin 5 | OUT0 — Output 0 |
| Pin 6 | OUT1 — Output 1 |
| Pin 7 | OUT2 — Output 2 |
| Pin 8 | OUT3 — Output 3 |
| Pin 9 | OUT4 — Output 4 |
| Pin 10 | OUT5 — Output 5 |
| Pin 11 | OUT6 — Output 6 |
| Pin 12 | OUT7 — Output 7 |
| Pin 13 | SCL — I2C clock |
| Pin 14 | SDA — I2C data |
| Pin 15 | CS — Chip select |
| Pin 16 | PD — Power down |
Aplicaciones típicas
CDCM6208VFRGZR es adecuado para 6 aplicacións: Data Converter Clocking, Ethernet Switches, Optical Transport, Wireless Base Stations, Broadcast Video, Test and Measurement.
Data Converter Clocking
The CDCM6208VFRGZR provides low-jitter clocks to ADCs and DACs, ensuring precise sampling and reducing aperture jitter. Its multiple outputs can synchronize multiple converters, and its low power consumption is beneficial in multi-channel systems.
Recomendado
Ethernet Switches
In Ethernet switches, the CDCM6208VFRGZR generates multiple synchronized clocks for PHYs and MACs, ensuring reliable data transmission. Its low jitter and hitless switching support redundant clock paths, enhancing network reliability.
Recomendado
Optical Transport
The CDCM6208VFRGZR is used in optical transport systems to generate clocks for high-speed serializers/deserializers (SerDes). Its low jitter and multiple outputs support multiple channels, and its fractional dividers allow flexible frequency synthesis.
Recomendado
Wireless Base Stations
In wireless base stations, the CDCM6208VFRGZR provides clocks for RF transceivers and baseband processors. Its low phase noise improves signal quality, and its programmable outputs support various logic standards.
Recomendado
Broadcast Video
The CDCM6208VFRGZR generates precise clocks for video processing and synchronization in broadcast equipment. Its low jitter ensures stable video timing, and its multiple outputs can drive multiple video processors.
Recomendado
Test and Measurement
In test and measurement instruments, the CDCM6208VFRGZR provides accurate clocks for signal generation and analysis. Its low jitter and flexible frequency synthesis enable precise measurements, and its low power is beneficial for portable instruments.
Recomendado
Resumen de productos recomendados
Datos de referencia de ingeniería para CDCM6208VFRGZR — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Comparación con alternativas
| Parámetro | Este producto | CDCM6208V2RGZR | CDCM6208V1FRGZR | CDCM6208V1RGZR | LMK5C33216RGCR | LMK00306SQX/NOPB |
|---|---|---|---|---|---|---|
| Package | 48-VQFN (RGZ) | 48-VQFN (RGZ) | 48-VQFN (RGZ) | 48-VQFN (RGZ) | 48-VQFN (RGZ) | 48-VQFN (RGZ) |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Output Frequency | Up to 800 MHz | Up to 800 MHz | Up to 800 MHz | Up to 800 MHz | Up to 3.3 GHz | Up to 3.1 GHz |
| Jitter (RMS) | 0.5 ps | 0.5 ps | 0.5 ps | 0.5 ps | 0.1 ps | 0.2 ps |
| Number of Outputs | 8 | 8 | 8 | 8 | 16 | 6 |
| Supply Voltage | 3.3 V | 3.3 V | 3.3 V | 3.3 V | 3.3 V | 3.3 V |
| Power Consumption | 1.2 W | 1.2 W | 1.2 W | 1.2 W | 1.5 W | 0.8 W |
| Interface | SPI, I2C | SPI, I2C | SPI, I2C | SPI, I2C | SPI | SPI |
Diferenciadores clave
- Low jitter of 0.5 ps RMS (frente a LMK00306SQX/NOPB)
- 8 outputs (frente a LMK00306SQX/NOPB)
- Fractional dividers (frente a LMK00306SQX/NOPB)
Notas de diseño
Ensure proper decoupling of the VDD pins with 0.1uF and 10uF capacitors placed close to the pins. Use a clean ground plane to minimize noise and improve jitter performance.
Place the loop filter components close to the PLL pins to optimize jitter. Use short traces and avoid routing high-speed signals near the loop filter.
The exposed pad must be soldered to a thermal via array to ensure proper heat dissipation. The thermal resistance is [DATA_NEEDED: theta_JA], so adequate copper area is required for high-power operation.
Información de cumplimiento
RoHS compliant per TI product page. Not AEC-Q100 qualified.
