DF1706E/2K

Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Obsolete
Function:	Interpolation Filter
Applications:	Consumer Audio, Professional Audio
Number of Channels:	2
Interface:	I²S
Voltage - Supply:	3 V ~ 3.6 V
Operating Temperature:	-25°C ~ 85°C (TA)
Specifications:	32kHz ~ 192kHz
Package / Case:	28-SSOP (0.209", 5.30mm Width)
Supplier Device Package:	28-SSOP
Base Part Number:	DF1706

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Audio Special Purpose: DF1706E/2K Application Field and Working Principle

DF1706E/2K is an audio special purpose designed by Op amp, N-channel MOSFETs and CMOS transistor. It is mainly used for two-channel active crossover, line-level amplifier and medium-current driver circuits.

Application Field

DF1706E/2K is generally applied in two-channel active crossover system to convert a single input signal into two separate crossovers. It is also used in line-level amplifier and microphones. Line-level amplifier is designed to amplify signals at low level volts and send them to input of higher volts. Microphones are used to convert sound pressure into electrical voltage. With the help of DF1706E/2K, it will amplify sound pressure signals at low level volts and then send them to output of higher volts.

Working Principle

The main circuit of DF1706E/2K consists of two N-channel MOSFETs, an Op amp and a CMOS transistor. When a signal is given to the circuit, N-channel MOSFETs and the CMOS transistor will amplify the signal and the Op amp will act as a buffer to reduce distortion. The amplifying and buffering process helps to reduce the signal-to-noise ratio (SNR). When the signal comes into the circuit, the first thing that the circuit does is amplifying the signal. The N-channel MOSFETs will conduct the signal and the voltage on the drain will become higher than the source. Then, the signal will enter the Op amp which will subtract the signal from ground and amplify it. The amplified signal will then go through the CMOS transistor and the output voltage will be proportional to the input voltage. Lastly, the signal will pass through the buffer stage of the Op amp and the output voltage will be equal to the input voltage, but with a higher SNR. The buffers help to reduce distortion, increase output voltage and reduce noise.

Advantage

The main advantage of using DF1706E/2K is that it is a low cost and energy efficient circuit. It is capable of converting a single input signal into two separate crossovers and amplifying it to a much higher level of output voltage. It can also reduce distortion, increase output voltage and reduce noise. Moreover, its components are readily available in the market and can be replaced easily.

Conclusion

DF1706E/2K is an audio special purpose designed to convert a single input signal into two separate crossovers. It is mainly used for two-channel active crossover, line-level amplifier and medium-current driver circuits. Its components are readily available in the market and it is capable of reducing distortion, increasing output voltage and reducing noise.

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