Overview
The LTC6902CMS#PBF, produced by Analog Devices Inc., is a precision, low-power, and easy-to-use oscillator that provides multiphase outputs in a small package. This component is designed to offer a flexible and reliable solution for various applications requiring precise timing and frequency control. The oscillator frequency can be set by a single external resistor, and it also features optional spread spectrum frequency modulation (SSFM) to improve electromagnetic compatibility (EMC) performance.
Key Specifications
| Parameter | Value | Conditions |
|---|---|---|
| Operating Supply Range | 2.7V to 5.5V | |
| Operating Temperature Range | -40°C to 85°C | |
| Frequency Range | 5kHz to 20MHz | |
| Frequency Error | < 1.5% Max (5kHz to 10MHz, TA = 25°C) < 2% Max (5kHz to 10MHz, TA = 0°C to 70°C) | |
| Temperature Stability | ±40ppm/°C | |
| Supply Current | 400µA Typical (V+ = 3V, 1MHz) | |
| Start-Up Time | 50µs to 1.5ms | |
| Output Driver | 100Ω CMOS | |
| Package | 10-Lead MSOP |
Key Features
- 2-, 3-, or 4-phase outputs
- Optional spread spectrum frequency modulation (SSFM) for improved EMC performance
- Frequency set by a single external resistor (RSET)
- Frequency spreading controlled by an additional external resistor (RMOD)
- Fast start-up time: 50µs to 1.5ms
- Low power consumption: 400µA typical supply current at V+ = 3V, 1MHz
- Operates from a single 2.7V to 5.5V supply
- Integrated programmable multiphase circuit
Applications
- Switching power supply clock reference
- Portable and battery-powered equipment
- PDAs
- Cell phones
- Clocking switched capacitor filters
Q & A
- What is the operating supply range of the LTC6902CMS#PBF?
The operating supply range is from 2.7V to 5.5V.
- What is the frequency range of the LTC6902CMS#PBF?
The frequency range is from 5kHz to 20MHz.
- How is the oscillator frequency set in the LTC6902CMS#PBF?
The oscillator frequency is set by a single external resistor (RSET).
- What is the purpose of the spread spectrum frequency modulation (SSFM) in the LTC6902CMS#PBF?
The SSFM modulates the oscillator's frequency to spread the oscillator's energy over a wide frequency band, improving electromagnetic compatibility (EMC) performance.
- How is the amount of frequency spreading controlled in the LTC6902CMS#PBF?
The amount of frequency spreading is controlled by an additional external resistor (RMOD).
- What are the typical supply current and start-up time of the LTC6902CMS#PBF?
The typical supply current is 400µA at V+ = 3V, 1MHz, and the start-up time is 50µs to 1.5ms.
- What is the output driver type of the LTC6902CMS#PBF?
The output driver is a 100Ω CMOS driver.
- In what package is the LTC6902CMS#PBF available?
The LTC6902CMS#PBF is available in a 10-Lead MSOP package.
- What are some common applications of the LTC6902CMS#PBF?
Common applications include switching power supply clock reference, portable and battery-powered equipment, PDAs, cell phones, and clocking switched capacitor filters.
- What is the operating temperature range of the LTC6902CMS#PBF?
The operating temperature range is from -40°C to 85°C.
