AK7719B 查看數據表（PDF） - Asahi Kasei Microdevices

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AK7719B

Low Power DSP for Voice and Audio Processing

Asahi Kasei Microdevices 

[AK7719B]

■ SRC Block

11. Filter Characteristics

(Ta= -40°C~85°C, VDD=1.1V~1.3V, TVDD=1.6~3.6V, VSS =0V)

Parameter

Symbol min

typ

max Unit

Passband -0.01dB 0.980≦FSO/FSI≦6.000

PB

0

0.4583FSI kHz

0.900≦FSO/FSI＜0.990

PB

0

0.4167FSI kHz

0.533≦FSO/FSI＜0.909

PB

0

0.2182FSI kHz

0.490≦FSO/FSI＜0.539

PB

0

0.2177FSI kHz

0.450≦FSO/FSI＜0.495

PB

0

0.1948FSI kHz

0.225≦FSO/FSI＜0.455

PB

0

0.1312FSI kHz

Passband -0.50dB 0.167≦FSO/FSI＜0.227

PB

0

0.0658FSI kHz

Stopband

0.980≦FSO/FSI≦6.000

SB 0.5417FSI

kHz

0.900≦FSO/FSI＜0.990

SB 0.5021FSI

kHz

0.533≦FSO/FSI＜0.909

SB 0.2974FSI

kHz

0.490≦FSO/FSI＜0.539

SB 0.2812FSI

kHz

0.450≦FSO/FSI＜0.495

SB 0.2604FSI

kHz

0.225≦FSO/FSI＜0.455

SB 0.1802FSI

kHz

0.167≦FSO/FSI＜0.227

SB 0.0970FSI

kHz

Passband Ripple 0.225≦FSO/FSI≦6.000

PR

±0.01 dB

0.167≦FSO/FSI＜0.227

PR

±0.50 dB

Stopband

Attenuation

0.450≦FSO/FSI≦6.000

SA

0.167≦FSO/FSI＜0.455 SA

95.2

dB

90.0

dB

Group Delay

(Note 10)

GD

52.5×Tsi

+ 9.5×Tso

Sec

Note 10. Group delay is a calculated time from a rising edge of SYNC at the input to a rising edge of SYNC at

the output.

SYNCI

SDTI

SRC Block

SYNCO

SDTO

SYNCI

SDTI

SYNCO

SDTO

Tsi

Lch Rch

Tso

52.5×Tsi + 9.5×Tso

Lch

Rch

Figure 3. SRC Filter Group Delay (Left Justified)

MS1565-E-00-PB

11

2013/11

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