Overview
The AD9574BCPZ, produced by Analog Devices Inc., is a highly integrated clock generator designed specifically for Ethernet and gigabit Ethernet applications. This component features a dedicated phase-locked loop (PLL) core that is optimized for low jitter and phase noise performance, which is crucial for maximizing network performance. The AD9574BCPZ is packaged in a 48-lead 7 mm × 7 mm LFCSP and operates on a single 3.3 V supply, with an operating temperature range of −40°C to +85°C.
Key Specifications
| Parameter | Min | Typ | Max | Unit | Comments |
|---|---|---|---|---|---|
| Input Frequency | 19.44 MHz / 25 MHz | Reference input frequencies | |||
| Output Frequency | Up to 312.5 MHz | Maximum output frequency | |||
| Supply Voltage | 2.97 V | 3.3 V | 3.63 V | V | Operating voltage range |
| Operating Temperature | −40°C | +85°C | °C | Operating temperature range | |
| Jitter (rms) | 0.234 ps | ps | At 156.25 MHz, 10 kHz to 10 MHz bandwidth | ||
| Output Types | CMOS, HCSL, HSTL, LVDS | Supported output signal types | |||
| Package Type | 48-lead LFCSP | Package type and pin count |
Key Features
- Redundant Input Reference Clock Capability: Supports dual reference inputs for increased reliability.
- Reference Monitoring Function: Allows for monitoring the quality of the reference clock inputs.
- Fully Integrated VCO/PLL Core: Includes a low noise phase frequency detector, precision charge pump, partially integrated loop filter, and a low phase noise voltage controlled oscillator.
- Low Jitter Performance: Offers low rms jitter, such as 0.234 ps at 156.25 MHz (10 kHz to 10 MHz bandwidth).
- Multiple Output Types: Supports CMOS, HCSL, HSTL, and LVDS output signals.
- Programmable Output Frequencies: Output frequencies can be configured using external pull-up or pull-down resistors connected to the PPRx pins.
Applications
The AD9574BCPZ is primarily designed for Ethernet and gigabit Ethernet line card applications, where low jitter and phase noise are critical. It is also suitable for other applications requiring high-performance clock generation, such as telecommunications, data centers, and high-speed networking equipment.
Q & A
- What is the primary function of the AD9574BCPZ?
The AD9574BCPZ is a multiple output clock generator optimized for Ethernet and gigabit Ethernet applications.
- What are the supported input frequencies for the AD9574BCPZ?
The supported input frequencies are 19.44 MHz and 25 MHz.
- What is the maximum output frequency of the AD9574BCPZ?
The maximum output frequency is up to 312.5 MHz.
- What types of output signals does the AD9574BCPZ support?
The AD9574BCPZ supports CMOS, HCSL, HSTL, and LVDS output signals.
- How is the output frequency configured on the AD9574BCPZ?
The output frequency can be configured using external pull-up or pull-down resistors connected to the PPRx pins.
- What is the operating voltage range of the AD9574BCPZ?
The operating voltage range is from 2.97 V to 3.63 V.
- What is the operating temperature range of the AD9574BCPZ?
The operating temperature range is from −40°C to +85°C.
- What is the typical jitter performance of the AD9574BCPZ?
The typical jitter performance is 0.234 ps rms at 156.25 MHz (10 kHz to 10 MHz bandwidth).
- What package type is the AD9574BCPZ available in?
The AD9574BCPZ is available in a 48-lead LFCSP package.
- What are some common applications for the AD9574BCPZ?
Common applications include Ethernet and gigabit Ethernet line cards, telecommunications, data centers, and high-speed networking equipment.
