Overview
The LTC1799IS5#TRMPBF is a precision oscillator manufactured by Analog Devices Inc. This component is designed to be highly accurate and easy to use, occupying minimal space on the PCB. It operates with a single power supply ranging from 2.7V to 5.5V and provides a rail-to-rail, 50% duty cycle square wave output. The oscillator frequency is programmed by a single external resistor, eliminating the need for external trim components. This makes it an ideal choice for applications requiring high frequency accuracy and stability.
Key Specifications
| Parameter | Conditions | Min | Typ | Max | Units |
|---|---|---|---|---|---|
| Supply Voltage (V+) | - | 2.7 | - | 5.5 | V |
| Frequency Range | - | 1 kHz | - | 33 MHz | - |
| Frequency Error (5 kHz to 20 MHz, T = 25°C) | - | - | ±1.5% | - | % |
| Frequency Error (5 kHz to 20 MHz, T = 0°C to 70°C) | - | - | ±2% | - | % |
| Temperature Stability | - | - | ±40 ppm/°C | - | - |
| Supply Stability | - | - | 0.05%/V | - | - |
| Duty Cycle (1 kHz to 2 MHz) | - | 49.5% | 50% | 50.5% | % |
| Duty Cycle (2 MHz to 20 MHz) | - | 45% | 50% | 55% | % |
| Typical Supply Current | - | - | 1 mA | - | mA |
| Output Driver | - | - | 100 Ω CMOS | - | Ω |
| Package Type | - | - | 5-Lead TSOT-23 | - | - |
Key Features
- One external resistor sets the frequency.
- Fast start-up time: less than 1 ms.
- Frequency range: 1 kHz to 33 MHz.
- High accuracy operation with ≤1.5% frequency error (5 kHz to 20 MHz at T = 25°C).
- Proprietary feedback loop linearizes the relationship between RSET and frequency.
- ±40 ppm/°C temperature stability.
- 0.05%/V supply stability.
- 50% ±1% duty cycle for frequencies between 1 kHz and 2 MHz, and 50% ±5% for frequencies between 2 MHz and 20 MHz.
- Typical supply current of 1 mA.
- 100 Ω CMOS output driver ensuring fast rise/fall times and rail-to-rail switching.
- Operates from a single 2.7V to 5.5V supply.
- Low profile (1mm) SOT-23 (ThinSOT™ package).
- AEC-Q100 qualified for automotive applications.
Applications
The LTC1799IS5#TRMPBF is suitable for a variety of applications requiring precise frequency generation, including:
- Automotive systems: AEC-Q100 qualified, making it reliable for use in automotive applications.
- Industrial control systems: High accuracy and stability make it ideal for industrial control and monitoring systems.
- Medical devices: Precise frequency generation is crucial in medical devices, and the LTC1799 meets these requirements.
- Consumer electronics: Used in various consumer electronic devices where precise timing is necessary.
- Telecommunications: Suitable for telecommunications equipment requiring stable and accurate clock signals.
Q & A
- What is the frequency range of the LTC1799IS5#TRMPBF?
The frequency range of the LTC1799IS5#TRMPBF is from 1 kHz to 33 MHz.
- How is the oscillator frequency programmed?
The oscillator frequency is programmed by a single external resistor (RSET).
- What is the typical supply current of the LTC1799IS5#TRMPBF?
The typical supply current is 1 mA.
- What is the operating temperature range for the LTC1799IS5#TRMPBF?
The operating temperature range is from -40°C to 85°C for the industrial grade (I), and -40°C to 125°C for the high temperature grade (H).
- Is the LTC1799IS5#TRMPBF suitable for automotive applications?
Yes, it is AEC-Q100 qualified for automotive applications.
- What type of output driver does the LTC1799IS5#TRMPBF have?
The LTC1799IS5#TRMPBF has a 100 Ω CMOS output driver.
- What is the duty cycle of the output signal?
The duty cycle is 50% ±1% for frequencies between 1 kHz and 2 MHz, and 50% ±5% for frequencies between 2 MHz and 20 MHz.
- How does the LTC1799IS5#TRMPBF ensure frequency accuracy?
The LTC1799IS5#TRMPBF features a proprietary feedback loop that linearizes the relationship between RSET and frequency, ensuring high accuracy without the need for external trim components.
- What is the package type of the LTC1799IS5#TRMPBF?
The package type is a 5-Lead TSOT-23 (ThinSOT™ package).
- What is the start-up time of the LTC1799IS5#TRMPBF?
The start-up time is less than 1 ms.
