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Description
The AK7720AVT is a digital signal processor with an integrated 4-channel 24-bit DAC, a stereo ADC with input selector, and a 2-channel input ADC. It features high performance with 108dB, 96dB, and 95dB for the integrated 4-channel DAC, 2-channel ADC with input selector, and the other 2-channel ADC, respectively. The audio DSP has a parallel arithmetic operation performance of 1536 steps/fs (at 48kHz sampling) and a 5k-word delay RAM for surround processing and time alignment adjusting. The AK7720AVT is programmable for various user requirements and is housed in an 80pin LQFP package.
Specifications and features
[DSP Block] - Word length: 24bit (Coefficient RAM & Data RAM: F24 floating point) - Processing Speed: 13.6 ns (1536 steps/fs; fs = 48kHz) - Multiplication: 20 x 24 → 44-bit Double precision arithmetic available - Divider 20 / 20 → 20bit - ALU: 48bit arithmetic operation (overflow margin 4bit) 20bit floating point arithmetic and logic operation - Program RAM: 3072 x 36bit - Coefficient RAM: 2048 x 24bit (F24 floating point) - Data RAM: 2048 x 24-bit (F24 floating point) - Offset Register: 64 x 13bit - Delay RAM1: 3072 x 24-bit - Delay RAM2: 2048 x 24-bit - Sampling rate: fs = 7.35k ~ 48kHz - Master Clock: 1536fs (generated from 32fs, 48fs, 64fs, 128fs, 256fs, 384fs by internal PLL) - Master/Slave Operation [ADC1 Block] - Stereo with 6 Inputs Selector - DR, S/N: 96dB (fs = 48kHz, when differential input) - S/(N+D): 90dB (fs = 48kHz) - Differential & Single-ended Inputs - Digital HPF (fc=1Hz) - 6 Analog Inputs Selector (2 differential, 4 single-ended) - Digital Volume Control (24dB ~ -103dB, 0.5dB Step, Mute) [ADC2 Block] - DR, S/N: 95dB (fs = 48kHz) - Single-ended Inputs - Digital Volume Control (24dB ~ -103dB, 0.5dB Step, Mute) [SRC Block] - 3 Pair of Stereo → 1 Stereo Pair Selector - 2ch x 1 system - Supporting frequency: Fin = 7.35kHz ~ 96kHz → Fout = 7.35kHz ~ 48kHz (FSO/FSI = 0.167~6.0) [Guidance SRC Block] (GSRC) - 1 Channel (24bit) Up-converter for Voice Guidance - Supporting frequency: Fin = 7.35kHz ~ 12kHz → Fout = 44.1kHz or 48kHz [DAC Block] - 4ch (2 Stereos) - 24bit 128 x Over-sampling advanced multi-bit (fs=8kHz~48kHz) - DR, S/N: 108dB (Differential Output) - S/(N+D): 90dB - Digital Volume Control (12dB ~ -115dB, 0.5dB Step, Mute) [Digital Interface Input/Output] - Digital Signal Input Port (4ch): 24bit MSB justified, 24/20/16bit LSB justified and I2S Format - Digital Signal Output Port (6ch): 24bit MSB justified, 24/16bit LSB justified and I2S Format [Micro Computer Interface] - I2C or 4-wired Interface [General] - Integrated PLL - Integrated Regulator 3.3V → 1.8V - Power Supply: 3.3V ± 0.3V - Operating Temperature Range: -40˚C ~ 85˚C - 80pin LQFP
Application Scenarios
The AK7720AVT can be used in various applications such as audio systems, multimedia devices, and automotive audio systems. Its high-performance DAC and ADC, along with its programmability, make it suitable for a wide range of audio processing tasks.
Comparison
Advantages- Integrated 4-channel 24-bit DAC and stereo ADC make it versatile for audio processing tasks.
- High performance with 108dB, 96dB, and 95dB for the integrated 4-channel DAC, 2-channel ADC with input selector, and the other 2-channel ADC, respectively.
- Programmable for various user requirements.
- Housed in an 80pin LQFP package for compact design.
Disadvantages- None identified.
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Datasheet
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- Datasheet: Download AK7720AVT
- Chipdatas Part: CD88-AK7720AVT
- Warehouse: China, Hong Kong
- Dispatch: Within 24 hours
- Free Shipping: Yes
- Prority Shipping: Yes, 3-5 days
- Last Updated: 2024/10/01 17:02 +0800
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