AK5730 Datasheet, PDF (1/50 Pages) Asahi Kasei Microsystems – 4-Channel Differential Audio ADC for Line & Mic Inputs

[AK5730]
AK5730
4-Channel Differential Audio ADC for Line & Mic Inputs
GENERAL DESCRIPTION
The AK5730 features a 4-channel Differential ADC with SAR ADC for DC measurement. Differential ADC
supports Line and Microphone-input, making it ideal for microphone array applications. TDM audio format
makes it easy to connect with DSP.
FEATURES
1. Audio ADC
- 4-Channel Audio ADC
- Full-differential Input
- Input Voltage:
Mic: 1.65Vrms,
LINE and Phone: 3Vrms(with external resistors) programmable
Boost input: 11.7Vrms(with external resistors) programmable
- ADC Performance:
S/(N+D): typ 92dB
DR, S/N: typ 100dB
- Digital HPF for DC-offset cancellation: fc=1Hz with individual on/off
2. SAR ADC
- 1ch SAR ADC with 9:1 MUX
- Reference Voltage: Ground
3. Sampling Rate: 8kHz ~ 48kHz
4. Master Clock: 256fs, 384fs, 512fs or Internal PLL
5. Master/Slave mode
6. Audio Interface Format: MSB First, 2’s complement
- 24bit I²S
- 24bit TDM interface up to 4 ICs cascade
7. Channel Independent Microphone Diagnostics
- open microphone
- shorts to battery
- shorts to ground
- shorts across inputs
- microphone bias over current
- over temperature
8. Programmable Microphone Bias: 5V to 9V with 0.5V step
9. μP I/F: I2C Bus (Ver 1.0, 400kHz Mode) or SPI
10. Power Supply:
VDD: 3.0 ∼ 3.6V
11. Ta = −40 ∼ 105°C
12. Package: 48pin LQFP
Rev 0.8
2013/06
-1-