CDB44800 Cirrus Logic Inc, CDB44800 Datasheet - Page 11

• Manufacturer Part Number: CDB44800
• Description: BOARD EVAL FOR CS44800 PWM CTRL
• Manufacturer: Cirrus Logic Inc
• Series: Popguard®r

Specifications of CDB44800

• Amplifier Type: Class D
• Output Type: 8-Channel
• Voltage - Supply: 20 V ~ 50 V
• Operating Temperature: -10°C ~ 70°C
• Board Type: Fully Populated
• Utilized Ic / Part: CS44800
• Description/function: Audio DSPs
• Operating Supply Voltage: 5 V
• Product: Audio Modules
• For Use With/related Products: CS44800
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Max Output Power X Channels @ Load: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 598-1532; CDB-44800

DS632F1
PWM FILTER CHARACTERISTICS
(Logic “0” = GND = 0 V; Logic “1” = VLS = VLC; VD = 2.5 V; DAI_MCLK = 12.288 MHz; XTAL = 24.576 MHz; PWM
Switch Rate = 384 kHz; Fs = 32 kHz to 192 kHz; Measurement bandwidth is 10 Hz to 20 kHz unless otherwise
specified.)
SWITCHING CHARACTERISTICS - XTI
(VD = 2.5 V, VDP = VLC = VLS = 3.3 V, VDX = 2.5 V to 5.0 V; Inputs: Logic 0 = GND, Logic 1 = VDX)
Digital Filter Response
Passband
OSRATE = 0b
OSRATE = 1b
OSRATE = 0b
OSRATE = 1b
Group Delay
De-emphasis Error
(Relative to 1 kHz)
XTI period
XTI high time
XTI low time
XTI Duty Cycle
External Crystal operating frequency
12. Filter response is not production tested but is characterized and guaranteed by design.
13. XTAL = 49.152 MHz; PWM Switch Rate = 768 kHz; Fs = 96 kHz to 192 kHz.
14. The equation for the group delay through the sample rate converter with OSRATE = 0b is (8.5 / Fsi) + (10
/ Fso) ± (4.5 / Fsi). The equation for the group delay through the sample rate converter with OSRATE = 1b
is (8.5 / Fsi) + (20 / Fso) ± (4.5 / Fsi).
(Note 13)
(Note 13)
Parameter
(Note 12)
Parameter
XTI
Frequency Response
t
clkih
to -0.01 dB corner
to -0.01 dB corner
Figure 2. XTI Timings
10 Hz to 20 kHz
10 Hz to 40 kHz
to -3 dB corner
to -3 dB corner
Fs = 44.1 kHz
Fs = 32 kHz
Fs = 48 kHz
t
clki
Symbol
t
t
t
clkih
clkil
clki
t
clkil
18.518
24.576
Min
-0.8
-1.2
8.34
8.34
0
0
0
0
Min
-
-
-
45
(Note 14)
Typ
-
-
-
-
-
-
-
-
-
Typ
50
---
---
---
---
+0.02
+0.02
±0.23
±0.14
±0.09
40.69
22.38
22.38
Max
24.0
44.5
Max
1.6
3.3
55
54
CS44800
MHz
Unit
Unit
kHz
kHz
kHz
kHz
ns
ns
ns
%
ms
dB
dB
dB
dB
dB
11