AK7754 Ver la hoja de datos (PDF) - Asahi Kasei Microdevices

Número de pieza

componentes Descripción

Fabricante

AK7754

Audio DSP with Stereo CODEC + MIC/HP-AMP

Asahi Kasei Microdevices 

[AK7754]

■ DAC Block

1. fs=8kHz

(Ta=-20ºC ~ 85ºC, AVDD=HVDD=DVDD= 3.0V ~ 3.6V, DVDD18= 1.7V ~ 1.9V; VSS1=VSS2 = VSS3=VSS4=0V;

fs=48kHz; DEM1-0 bits= “0”, fs=8kHz; Note 27)

Parameter

Symbol

min

typ

max

Unit

Passband (±0.05dB)

(Note 31)

PB

0

3.62

kHz

(-6.0dB)

4

kHz

Stopband

(Note 31)

SB

4.37

kHz

Passband Ripple

PR

±0.01

dB

Stopband Attenuation (Ts=1/fs) (Note 32)

SA

64

dB

Group Delay

GD

24

Ts

Digital Filter + Analog Filter

Amplitude characteristic 20Hz~3.5kHz

±0.5

dB

2. fs=48kHz

(Ta=-20ºC ~ 85ºC, AVDD=HVDD=DVDD= 3.0V ~ 3.6V, DVDD18= 1.7V ~ 1.9V; VSS1=VSS2=VSS3=VSS4=0V;

fs=48kHz; DEM1-0 bits= “0”, fs=48kHz; Note 27)

Parameter

Symbol

min

typ

max

Unit

Digital Filter

Passband (±0.05dB) (Note 31)

PB

0

21.7

kHz

(-6.0dB)

-

24.0

-

kHz

Stopband

(Note 31)

SB

26.2

kHz

Passband Ripple

PR

±0.01

dB

Stopband Attenuation

SA

64

dB

Group Delay (Ts=1/fs) (Note 32)

GD

-

24

Ts

Digital Filter + Analog Filter

Amplitude characteristic 0~20.0kHz

±0.5

dB

Note 31. Pass band and Stop band parameter is related to sampling frequency(fs). PB=0.4535fs (at-0.05dB),

SB=0.5465fs.

Note 32. The digital filter’s delay is calculated as the time from setting 24-bit data into the input register until an analog

signal is output.

MS1138-E-01-PB

16

2012/03

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