of digital audio converter IC’s
Audio Converters
AK7732 (Floating Point)
• Echo and noise cancellation capable
• DR, SNR: 97dB; THD+N: 9dB
• Stereo ADC, 10-channels of digital I/O
• Audio sample rate: 7.5kHz to 96kHz
• DSP core: 8-bits, floating point, 19kHz
• 104 lines, 7k internal delay RAM
• 6144 execution instructions at 8Khz fs
• EEPROM boot
• 64-pin LQFP package
Hands-Free Application
AK7732 + external stereo DAC
AK7780 Advanced DSP
• Floating point DSP with 5-channel ADC
• ADC features:
• Two stereo ADC’s, one mono ADC
• Select from  stereo differential or
seven single-ended inputs
• DR, SNR: 96dB THD+N: -9dB
• DSP features:
• 8-bit word length (4.4 floating pt.)
• 560 steps at 48kHz fs
• Integrated delay RAM: 168kbits
• Integrated sample rate converter:
• Input: 7.5kHz to 96kHz
• Output: 44.1kHz to 96kHz
• Power supplies: .V analog, 1.8V digital
• 100-pin LQFP package
Instruction
Lines
768
768
1024
512
512
768
512
768
2560
Delay
RAM
External
72kbit
72kbit
72kbit
24kbit
72kbit
84kbit
64kbit
168kbit
Package
Pins
100
48
64
48
64
64
100
64
100
Type
LQFP
LQFP
LQFP
LQFP
LQFP
LQFP
LQFP
LQFP
LQFP
Power
(mW)
500
215
419
214
330
281
560
365
396
Additional Features
Integrated PLL
Integrated PLL, small package
Floating point processing (4-bit exponent), integrated PLL
5:1 ADC input MUX, low cost
6:1 ADC input MUX, high analog performance
5:1 ADC input MUX, auxiliary mono ADC, integrated PLL
Sample rate converter, floating point processing, 8:1 ADC input MUX
Complete hands-free car kit solution
Sample rate converter, floating point, 1.8V digital core
Page 17
Home Index Pages Text
Previous Next
Pages: Home Index