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News
AKM releases the AK5522, an A/D Converter with Enhanced Environmental Noise Tolerance
2017-10-06 | ReturnAK5522VN
Product category: Audio > Audio A/D converter > Automotive ADCs
Title
32-bit 2ch A/D Converter
PSRR: 80dB, CMRR: 80dB, DR: 108dB
Applications
Car Audio Amplifiers, Active Noise Cancellation Systems, USB Audio Interfaces, Wireless Speakers, Electronic Instruments
Description
For car audio amplifiers, high environmental noise tolerance from DC-DC converter power supplies are required. Suitable to this need, Asahi Kasei Microdevices Corporation, (AKM), has released the AK5522VN, an automotive stereo A/D converter, (ADC), with enhanced resistance to power supply noise and system board noise. Directly connecting the DC-DC converter output to the AK5522VN as a power supply is possible, accomplishing a rich sound field and bass expressions, and distortion-free recording regardless of usage environment. In addition, analog characteristics such as the dynamic range are optimized based on VELVET SOUND (TM) technology that has been widely adopted by well-established high-end audio companies.
The AK5522VN is also ideal for non-automotive applications, such as USB audio interfaces and wireless speakers since it has high tolerance to supply and system noise.
Features
● World highest class *1 performance achieved at 80dB PSRR and 80dB CMRR even with a signal input
The AK5522VN maintains high PSRR with or without a signal input. The high PSRR and CMRR performance are achieved not only for the typical test condition of 1kHz, but also for wideband environmental noise of up to 3 MHz. Excellent noise tolerance in a real-world design enables the reduction of peripheral parts and cost enabling lower system cost and a smaller total footprint.
● Integrated high PSRR regulator for an external DAC power supply
By supplying power from the AK5522VN to a D/A converter, (DAC), it is possible to maximize the performance of the DAC even with a system using a DC-DC converter or a USB bus power supply with a noisy supply.
● Low jitter audio PLL to generate the internal master clock from LRCK/BICK
This eliminates the need for unnecessary routing of a high frequency master clock on the board, enabling a low EMI solution. In addition, a low jitter master clock to the DAC will help prevent
● Support AEC-Q100 Grade 2
The AK5522VN supports an operating temperature range of -40 ~ 105°C.
*1 According to AKM’s research on 2017/5/18.
Main Specifications
AK5522VN
|
|
PSRR (dB) |
80 |
CMRR (dB) |
80 |
Input |
Full Differential / Pseudo Differential / Single Ended |
DR, S/N (dB) |
108 |
THD+N (dB) |
-98 |
PGA (dB) |
-3 to +12 / 1dB step |
PLL |
Generate MCLK from LRCK/BICK, Enable to Output MCLK |
Sampling Rate (kHz) |
8 to 216 |
Resolution |
32-bit |
Internal Filte |
4 Types of Digital LPF, Digital HPF |
Group Delay |
4.4 / fs (Short Delay Slow roll-off) |
Control Mode |
Pin Setting / I2C Bus Setting |
Output Format |
MSB justified, I2S or TDM (maximum 4 cascades connection is available) |
Power Consumption (mW) |
76 |
Power Supply (V) |
Analog = 4.5 to 5.5 / 3.0 to 3.6 |
Operation Temperature (°C) |
-40 to 105 |
Package |
24-pin QFN |
Lineup
Products Name |
AK5522VN |
AK5720VT |
PSRR (dB) |
80 (typ) |
50 (typ) |
CMRR (dB) |
80 (typ) |
- |
Input Type |
Full Differential |
Single Ended |
Input Voltage |
to 2.1 Vrms |
to 1.06 Vrms @5V |
S/(N+D) (dB) |
98 (typ) |
94 (typ) |
DR, S/N (dB) |
108 (typ) |
102 (typ) |
PGA (dB) |
-3 to +12 / 1dB step |
0 or 15 |
Group Delay |
4.4 / fs |
5.5 / fs |
Sampling Rate (kHz) |
8 to 216 |
8 to 96 |
Power Supply (Analog) |
4.5 to 5.5 |
2.7 to 5.5 |
Digital I/F |
3.0 to 3.6 |
2.7 to 5.5 |
Resolution |
32-bit |
24-bit |
Channel |
2 |
2 |
Power Consumption (mW) |
76 |
27 |
Operation Temperrature (°C) |
-40 to 105 |
-40 to 105 |
Package |
24-pin QFN |
16-pin TSSOP |
[Notes]
* Information on this page is current on the date of press release.
* AKM is trademark of Asahi Kasei Microdevices Corporation in Japan, Europe and the United States.
* Appellations, company names and product names on this page are trademarks or registered trademarks of respective companies.
Source:http://www.akm.com/