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AK5374 Datasheet, PDF (1/51 Pages) Asahi Kasei Microsystems – 24-bit Stereo ADC with USB Interface | |||
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[AK5374]
AK5374
24-bit Stereo ADC with USB Interface
GENERAL DESCRIPTION
The AK5374 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 AK5374 is housed in a 36-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
 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:
36pin QFN (5 x 5 mm, 0.4mm pitch)
MS1197-E-00
-1-
2010/06
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