TDA7427AD1

Differential - Input:Output:	No/No
Base Part Number:	TDA7427A
Supplier Device Package:	28-SO
Package / Case:	28-SOIC (0.295", 7.50mm Width)
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 85°C
Voltage - Supply:	4.5 V ~ 11 V
Divider/Multiplier:	Yes/No
Frequency - Max:	290MHz
Series:	--
Ratio - Input:Output:	3:1
Number of Circuits:	1
Output:	Clock, Crystal
Input:	Clock, Crystal
PLL:	Yes
Type:	PLL Frequency Synthesizer
Part Status:	Obsolete
Packaging:	Tube

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Introduction

The TDA7427AD1 is a fundamental analog integrated circuit (IC) which has a wide range of applications in clock/timing. TDA7427AD1 offers a Clock/Timing solution with comprehensive features like the Clock Generators, PLLs, and Frequency Synthesizers, which are used in all digital ICs, computers, communication systems and electronic circuits. This IC is specifically designed for cost effective and reliable performance for demanding applications.

TDA7427AD1 Application Field

TDA7427AD1 is widely used for Clock/Timing applications such as: digital ICs, computers, communication systems, and electronic circuits. Its main characteristics and features are low power consumption, small package, low system downtime and cost effective price, making it the ideal choice for mid-range and large scale applications. This IC also contains Clock Generators, PLLs, and Frequency Synthesizers, which support a wide range of clock frequencies such as low, high, and ultra-high frequency. This integrated circuit also offers up to 8 differential clock outputs to cover a wide variety of clock and timing applications. TDA7427AD1 is also efficient for deserializing and serializing audio signal streams. Its high-speed serial interface makes it suitable for-line-level audio signal processing. This IC can also be used as a quick and cost-efficient alternative to more expensive digital audio ICs when used in applications such as multi-zone audio and AM/FM audio broadcasting systems.

TDA7427AD1 Working Principle

TDA7427AD1 works on a charge-pump principle and is equipped with an internal reference oscillator. This IC uses a voltage-controlled oscillator (VCO) whose output frequency is determined by an external reference signal provided by an AC (alternating current) or DC (direct current) component. The VCO\'s frequency can be set by varying its voltage. It also has a Phase Locked Loop (PLL) which helps in stabilizing its output frequency. This is done by comparing the reference signal frequency set by the user with the current frequency of the VCO. The PLL circuit is able to adjust for the output frequency drift of the VCO and ensure that it tracks the reference frequency set.

Conclusion

TDA7427AD1 is a highly cost effective and efficient clock/timing solution for a wide range of applications, in particular for Clock Generators, PLLs and Frequency Synthesizers. It provides stable, low-power and low system downtime performance, making it the ideal choice for mid-range and large scale applications. The charge-pump principle and voltage-controlled oscillator (VCO) helps to set the output frequency of this IC, while its Phase Locked Loop helps to stabilize it.

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