AK5373 Datasheet, PDF (1/53 Pages) Asahi Kasei Microsystems – 24-bit Stereo ADC with USB Interface

[AK5373]
AK5373
24-bit Stereo ADC with USB Interface
GENERAL DESCRIPTION
The AK5373 is a stereo A/D converter with a USB 2.0 interface. The device includes an integrated USB
serial interface engine, a USB transceiver, an audio class processing block, endpoints, and a 24-bit
stereo audio ADC. An integrated PLL enables the use of multiple sampling frequencies. A microphone
amplifier and an integrated programmable gain amplifier are available for processing low-level signals
from an analog microphone element. An external EEP-ROM is used to store the descriptor information.
The AK5373 is housed in a 48-pin package. It is a low power device, operating from +3.3V, and
consuming just 100mW in active mode and less than 100μA in suspend mode.
FEATURES
† USB 2.0 compliant (full speed audio class)
† USB audio controller
USB serial interface engine
Audio class encoder/decoder
† USB synchronization
Synchronous type (synchronize with 1ms SOF)
† 24-bit stereo A/D converter with mute control
S/(N+D) = 85dB, S/N = 91dB (AVDD=3.3V, MIC-Amp = 0dB)
S/(N+D) = 70dB, S/N = 78dB (AVDD=3.3V, MIC-Amp = +30dB)
† Microphone amplifier gain:
0dB, +6dB, +12dB, +18dB, +24dB, +30dB, +36dB
† Digital programmable gain: +24dB ~ -31dB, 1dB Step
† Integrated PLL supports standard sampling frequencies
8kHz, 11.025kHz, 16kHz, 22.05kHz, 32kHz 44.1kHz, 48kHz
† EEP-ROM interface for descriptors
† External Digital Audio Interface
† Power Management
† Low power consumption
30mA in active mode
Less than 100μA in suspend mode
† Power Supply:
Analog Power Supply (AVDD): 3.0 ~ 3.6V
Digital Power Supply (DVDD): 3.0 ~ 3.6V
† Ta = -10 ~ +70°C
† Package:
48pin LQFP (7 x 7 mm, 0.5mm pitch)
MS1202-E-00
-1-
2010/06