Overview
The SI5351A-B-GTR is a highly versatile and programmable clock generator produced by Skyworks Solutions Inc. This device is designed to replace traditional crystals, crystal oscillators, VCXOs, PLLs, and buffers, offering a wide range of clock generation capabilities. It features an internal oscillator that can generate up to 8 free-running clocks, making it ideal for applications requiring multiple clock domains. The SI5351A-B-GTR is particularly useful in scenarios where high frequency accuracy and flexibility are essential.
Key Specifications
| Parameter | Symbol | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Ambient Temperature Range | TA | -40 | 25 | 85 | °C |
| Core Supply Voltage | VDD | 2.25 | 3.3 | 3.5 | V |
| Max Frequency | FCLK | 0.008 | 160 | MHz | |
| Number of Outputs | 3 | ||||
| Interface | I2C | ||||
| Max Junction Temperature | Tj | 150 | °C | ||
| Operating Supply Current | IDD | 22 | 35 | mA | |
| Package | 10-Pin MSOP | ||||
| RoHS Compliance | Compliant |
Key Features
- Programmable Clock Generation: The SI5351A-B-GTR can generate synchronous or free-running non-integer related clock frequencies, making it versatile for multiple clock domains.
- Internal Oscillator and VCXO: Uses a fixed-frequency standard AT-cut crystal as a reference, and includes an internal VCXO for high linearity and reliable startup and operation.
- I2C Interface: Supports I2C communication for configuring the device, with a 7-bit device address and optional A0 pin for address selection.
- Output Control: Features output enable (OEB) and spread spectrum enable (SSEN) pins for controlling clock outputs and spread spectrum modulation.
- Low Power Consumption: Operates with a nominal supply current of 22 mA and supports power-down modes with low current consumption.
- Wide Operating Range: Supports a wide operating temperature range from -40°C to 85°C and supply voltages from 2.25V to 3.5V).
Applications
- Telecommunications: Ideal for generating clocks in telecommunications equipment where multiple clock frequencies are required.
- Consumer Electronics: Suitable for use in consumer electronics such as set-top boxes, gaming consoles, and other multimedia devices.
- Industrial Automation: Can be used in industrial automation systems that require precise and flexible clock generation.
- Networking Equipment: Useful in networking equipment like routers, switches, and servers where multiple clock domains are necessary.
- Aerospace and Defense: Applicable in aerospace and defense systems that demand high reliability and precision in clock generation.
Q & A
- What is the maximum frequency output of the SI5351A-B-GTR?
The maximum frequency output is 160 MHz).
- What interface does the SI5351A-B-GTR use for configuration?
The device uses an I2C interface for configuration).
- How many outputs does the SI5351A-B-GTR support?
The device supports up to 3 outputs).
- What is the operating temperature range of the SI5351A-B-GTR?
The operating temperature range is from -40°C to 85°C).
- Is the SI5351A-B-GTR RoHS compliant?
Yes, the device is RoHS compliant).
- What is the typical core supply current of the SI5351A-B-GTR?
The typical core supply current is 22 mA).
- Can the SI5351A-B-GTR generate multiple output frequencies from the same reference?
Yes, the device can generate multiple output frequencies controlled by the same control voltage, especially in the Si5351B variant).
- How does the output enable (OEB) pin function?
The output enable (OEB) pin allows enabling or disabling clock outputs. When the OEB pin is held low, the outputs are enabled, and when pulled high, the outputs are disabled).
- What is the purpose of the spread spectrum enable (SSEN) pin?
The spread spectrum enable (SSEN) pin allows for the activation of spread spectrum modulation on the clock outputs).
- Are there any evaluation kits available for the SI5351A-B-GTR?
Yes, evaluation kits such as the Si5351x-B20QFN-EVB are available for simplified evaluation and development).
