mc145073 Freescale Semiconductor, Inc, mc145073 Datasheet - Page 6

• Manufacturer Part Number: mc145073
• Description: Dual 16-bit Stereo Audio Sigma-delta
• Manufacturer: Freescale Semiconductor, Inc

MC145073
6
0
– 86
– 100
FIR
FILTER
OUTPUT
– 40
– 60
COMB
FILTER
OUTPUT
– 20
– 80
COMB
FILTER
INPUT
0
20
0
0
25
0
24
DIGITAL FILTER RESPONSE (20 – 25.8 kHz TRANSITION BAND)
50
48
12
OUTPUT DATA RATE = 48 kHz, FSEL = LOW
MAXIMUM ALIAS = – 86.713 db AT 24.0 kHz
OUTPUT DATA RATE = 48 kHz, FSEL = HIGH
72
75
24
TIME (OUTPUT CLOCKS)
INPUT FREQUENCY (kHz)
SIMULATED DELAYS
96
100
INPUT FREQUENCY (kHz)
120 144 168 192 216 240 264 288
36
125
48
150
Figure 4. Digital Filter Response (Narrowband)
Figure 3. Digital Filter Response (Wideband)
60
175
Figure 5. Group Delay and Setting Time
200
72
225
84
CLKI = 6.144 MHz
CLKI = 6.144 MHz
250
96
– 100
0
– 20
– 40
– 60
– 80
20
0
COMB FILTER OUTPUT
– 86
0
COMB FILTER INPUT
FIR FILTER OUTPUT
0
0
DIGITAL FILTER RESPONSE (20 – 24 kHz TRANSITION BAND)
5
24
12
OUTPUT DATA RATE = 44.1 kHz, FSEL = HIGH
MAXIMUM ALIAS = – 87.5884 db AT 169.125 kHz
OUTPUT DATA RATE = 44.1 kHz, FSEL = HIGH
48 72
10
24
TIME (OUTPUT CLOCKS)
INPUT FREQUENCY (kHz)
INPUT FREQUENCY (kHz)
SIMULATED DELAYS
15
96 120 144 168 192 216 240 264 288
36
20
48
25
60
30
72
MOTOROLA
84
35
96
40