LTC6907HS6#TRPBF

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LTC6907HS6#TRPBF is a high frequency and low power Programmable Timers and Oscillators. This circuit is manufactured by Linear Technology Corporation. It consists of three parts, a comparator, an oscillator, and an output control logic. This chip was built to help control high frequency operations without the need for external components. The chip is programmable allowing users to customize the operating frequency and duty cycle. This type of circuit is commonly used in applications such as clock synchronization, PLL loops, frequency synthesizers, and clock generators.

Design and Features

The LTC6907HS6#TRPBF circuit has two oscillator inputs, a positive and a negative. The positive and negative oscillator input pins are swinging outputs and are supplied by external clock sources. The comparator has an open collector inverting input, an inverting input pullup, a non-inverting reference input connected and an open drain output. The comparator reacts to the clock input sources, with the comparison time taking place at the midpoint of the oscillator cycle.

The output control logic includes an enable input, which is open drain, as well as an output enable. The enable pin is connected to an MOSFET switch, which can be used to switch the chip’s output on and off. The output enable pin is used to drive the chip’s output. Both the enable and output enable pins are supplied by external signals.

In order to program the circuit, a single input within the supply voltage range of 2.2V-3.6V is used. A programming option pin is connected to an EEPROM cell to store user-programmed values. This programmed data can be stored in the EEPROM for up to 4 years. There are also self-programmable options available on the chip, with the user being able to select from either 1 to 4 bits of prescaler, a programmable start count, and a programmable high frequency oscillator.

Application Field

The LTC6907HS6#TRPBF is suitable for a variety of applications. It can be used to create a clock synchronization reference circuit, as well as for frequency synthesizers and clock generators. Additionally, it can be used to control the operating frequency of high-speed devices such as FPGAs and ASICs. The chip is also suitable for powering communication systems using GSM, CDMA, and 4G technology.

It is also suitable for low cost applications, as the chip is manufactured with a low power design. The minimum supply voltage of 2.2V makes it an ideal choice for battery operated systems. Additionally, the presence of a self-programmable oscillator makes it ideal for embedded systems where the frequency can be changed on the fly.

Working Principle

The working principle of the LTC6907HS6#TRPBF is to detect the phase difference between two clock signals. This phase difference is detected by the comparator, which then produces a logic-level output. This logic-level output is used to control the output of the timer/oscillator circuit. The output is then used to control the operating frequency of the device.

The output of the timer/oscillator circuit is determined by the frequency of the two clock signals. The frequency of these two clock signals is set using the built-in prescaler and start count. Additionally, the EEPROM memory can be used to store user-programmed settings, allowing users to customize the frequency of the timer/oscillator output.

Conclusion

The LTC6907HS6#TRPBF is a high frequency and low power Programmable Timers and Oscillators. It consists of three parts, a comparator, an oscillator, and an output control logic. This chip is suitable for a variety of applications, with its low power design making it ideal for battery operated systems. The presence of an EEPROM memory and self-programmable options also make it great for embedded systems where the frequency can be changed on the fly. The working principle of this chip is to detect the phase difference between two clock signals and use the output to control the operating frequency of the device.

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