Overview
The LTC6900CS5#TRMPBF, produced by Analog Devices Inc., is a precision, low power oscillator designed for high accuracy and ease of use. It occupies very little PC board space and is programmed by a single external resistor (RSET), eliminating the need for external trim components. This oscillator features a proprietary feedback loop that linearizes the relationship between RSET and frequency, making frequency calculation straightforward. It operates with a single 2.7V to 5.5V power supply and provides a rail-to-rail, 50% duty cycle square wave output through its CMOS output driver.
Key Specifications
| Parameter | Value | Notes |
|---|---|---|
| Frequency Range | 1 kHz to 20 MHz | Programmable by RSET and DIV input |
| Supply Voltage | 2.7V to 5.5V | |
| Supply Current | 500 µA typical at 3V, 3MHz | |
| Frequency Error | ≤1.5% max at 5 kHz to 10 MHz (TA = 25°C) | ≤2% max at 5 kHz to 10 MHz (TA = 0°C to 70°C) |
| Temperature Stability | ±40 ppm/°C | |
| Supply Stability | 0.04%/V | |
| Duty Cycle | 50% ±1% (1 kHz to 2 MHz), 50% ±5% (2 MHz to 10 MHz) | |
| Start-Up Time | 50 µs to 1.5 ms | |
| Output Driver | 100 Ω CMOS | |
| Operating Temperature | -40°C to 85°C | |
| Package | 5-Lead TSOT-23 |
Key Features
- Single external resistor (RSET) sets the frequency, eliminating the need for external trim components
- Proprietary feedback loop linearizes the relationship between RSET and frequency
- Low power consumption with a typical supply current of 500 µA at 3V, 3MHz
- High accuracy operation with frequency error ≤1.5% max at 5 kHz to 10 MHz (TA = 25°C)
- Temperature stability of ±40 ppm/°C and supply stability of 0.04%/V
- Fast start-up time of 50 µs to 1.5 ms
- CMOS output driver with 100 Ω output resistance
- Operates from a single 2.7V to 5.5V supply
- Low profile (1mm) ThinSOT package
Applications
- Portable and battery-powered equipment
- PDAs and cell phones
- Low cost precision oscillator
- Charge pump driver
- Switching power supply clock reference
- Clocking switched capacitor filters
- Fixed crystal oscillator replacement
- Ceramic oscillator replacement
Q & A
- What is the frequency range of the LTC6900CS5#TRMPBF? The frequency range is 1 kHz to 20 MHz, programmable by the external resistor RSET and the DIV input.
- What is the supply voltage range for the LTC6900CS5#TRMPBF? The supply voltage range is 2.7V to 5.5V.
- What is the typical supply current of the LTC6900CS5#TRMPBF? The typical supply current is 500 µA at 3V, 3MHz.
- What is the frequency error of the LTC6900CS5#TRMPBF? The frequency error is ≤1.5% max at 5 kHz to 10 MHz (TA = 25°C) and ≤2% max at 5 kHz to 10 MHz (TA = 0°C to 70°C).
- How does the LTC6900CS5#TRMPBF achieve its frequency setting? The frequency is set by a single external resistor (RSET) and the proprietary feedback loop linearizes the relationship between RSET and frequency.
- What is the temperature stability of the LTC6900CS5#TRMPBF? The temperature stability is ±40 ppm/°C.
- What is the start-up time of the LTC6900CS5#TRMPBF? The start-up time is 50 µs to 1.5 ms.
- What type of output driver does the LTC6900CS5#TRMPBF have? The output driver is a 100 Ω CMOS driver.
- In what package is the LTC6900CS5#TRMPBF available? The LTC6900CS5#TRMPBF is available in a 5-Lead TSOT-23 package.
- What are some common applications of the LTC6900CS5#TRMPBF? Common applications include portable and battery-powered equipment, PDAs, cell phones, low cost precision oscillators, charge pump drivers, and more.
- How does the LTC6900CS5#TRMPBF ensure high accuracy operation? The LTC6900CS5#TRMPBF ensures high accuracy operation through its proprietary feedback loop and precise frequency setting mechanism, eliminating the need for external trim components.
