MC145073DW 查看數據表（PDF） - Motorola => Freescale

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产品描述 (功能)

生产厂家

MC145073DW

Dual 16-Bit Stereo Audio Sigma-Delta ADC

Motorola => Freescale 

0

MAXIMUM ALIAS = – 86.713 db AT 24.0 kHz

MAXIMUM ALIAS = – 87.5884 db AT 169.125 kHz

0

– 86

– 86

0 24 48 72 96 120 144 168 192 216 240 264 288

INPUT FREQUENCY (kHz)

OUTPUT DATA RATE = 48 kHz, FSEL = LOW

0 24 48 72 96 120 144 168 192 216 240 264 288

INPUT FREQUENCY (kHz)

OUTPUT DATA RATE = 44.1 kHz, FSEL = HIGH

Figure 3. Digital Filter Response (Wideband)

CLKI = 6.144 MHz

DIGITAL FILTER RESPONSE (20 – 25.8 kHz TRANSITION BAND)

20

DIGITAL FILTER RESPONSE (20 – 24 kHz TRANSITION BAND)

20

0

0

– 20

– 20

– 40

– 40

– 60

– 60

– 80

– 100

0

12 24 36 48 60 72 84 96

INPUT FREQUENCY (kHz)

OUTPUT DATA RATE = 48 kHz, FSEL = HIGH

– 80

– 100

0

12 24 36

48 60 72 84 96

INPUT FREQUENCY (kHz)

OUTPUT DATA RATE = 44.1 kHz, FSEL = HIGH

Figure 4. Digital Filter Response (Narrowband)

CLKI = 6.144 MHz

COMB

FILTER

INPUT

COMB

FILTER

OUTPUT

FIR

FILTER

OUTPUT

SIMULATED DELAYS

0 25 50 75 100 125 150 175 200 225 250

TIME (OUTPUT CLOCKS)

SIMULATED DELAYS

COMB FILTER INPUT

COMB FILTER OUTPUT

FIR FILTER OUTPUT

0

5

10

15

20

25

30

35

40

TIME (OUTPUT CLOCKS)

MC145073

6

Figure 5. Group Delay and Setting Time

MOTOROLA

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