AK4685 AKM [Asahi Kasei Microsystems], AK4685 Datasheet
AK4685
Manufacturer Part Number
AK4685
Description
Multi-channel CODEC with Differential Analog I/O
Manufacturer
AKM [Asahi Kasei Microsystems]
Datasheet
1.AK4685.pdf
(52 pages)
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The AK4685 is a single chip CODEC that integrates 4-channel ADC, 2-channel DAC and a stereo capacitor
less headphone amplifier. The converters are designed with an Enhanced Dual Bit architecture for the
ADC, and an Advanced Multi-Bit architecture for the DAC’s, enabling very low noise performance and
achieving wide dynamic range. The differential analog inputs and outputs cancel noise on analog signal
lines. Therefore, a stable system can be designed. The AK4685 has a dynamic range of 102dB for ADC,
106dB for DAC, and is well suited for digital TV and home theater systems.
MS1106-E-00
Audio Serial I/F (PORTA/B/C)
- Master/Slave mode (PORTB)
- I/F format : MSB justified, I
Multi-channel CODEC with Differential Analog I/O
Asynchronous ADC/DAC1/DAC2 Operation
4ch 24bit ADC
Two 2ch 24bit DAC’s
40mW Capless Stereo Headphone Amplifier
Independent Mute Pins for 2 lines
High Jitter Tolerance
TTL Level Digital I/F
External Master Clock Input:
- Differential Input
- 64x Oversampling
- Sampling Rate up to 48kHz
- Linear Phase Digital Anti-Alias Filter
- S/(N+D): 90dB
- Dynamic Range, S/N: 102dB
- Digital HPF for Offset Cancellation
- Channel Independent Digital Volume (+24/-103dB, 0.5dB/step)
- Soft Mute
- Differential/Single-end Ouput (DAC1)
- 128x Oversampling
- Sampling Rate up to 192kHz
- 24bit 8 times Digital Filter
- S/(N+D): 92dB
- Dynamic Range, S/N: 106dB
- Channel Independent Digital Volume (+12/-115dB, 0.5dB/step)
- Soft Mute
- Output Power: 1.21Vrms @ 3.3V, THD+N(min) = -40dB
- Dynamic Range, S/N: 96dB
- Pop Noise Free at Power-ON/OFF and Mute
256fs, 384fs, 512fs 768fs (fs=32kHz ∼ 48kHz)
128fs, 192fs, 256fs 384fs (fs=64kHz ∼ 96kHz)
128fs, 192fs (fs=120kHz ~ 192kHz)
GENERAL DESCRIPTION
FEATURES
2
S
- 1 -
AK4685
[AK4685]
2009/08
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