CS4235
CrystalClear Low Cost ISA Audio System
TM
RECOMMENDED OPERATING CONDITIONS
(AGND, DGND, SGND = 0 V, all voltages with respect to 0 V.)
Parameter
Power Supplies:
Digital
Digital Filtered
Analog
(Note 5)
Symbol
VD1
VDF1-VDF3
VA
T
A
Min
4.75
4.75
4.75
0
Typ
5.0
5.0
5.0
25
Max
5.25
5.25
5.25
70
Units
V
V
V
°C
Operating Ambient Temperature
Note
5: VD1 supplies the power to the ISA interface pins.
ADC1/DAC1 DIGITAL FILTER CHARACTERISTICS
(Note 1)
Parameter
Passband
Frequency Response
Passband Ripple
Transition Band
Stop Band
Stop Band Rejection
Group Delay
Group Delay Variation vs. Frequency
ADC1
DAC1
(0-0.40xFs)
Symbol
Min
0
-1.0
-
0.40xFs
0.60xFs
74
-
-
-
Typ
-
-
-
-
-
-
-
-
-
Max
0.40xFs
+0.5
±0.1
0.60xFs
-
-
10/Fs
0.0
0.1/Fs
Units
Hz
dB
dB
Hz
Hz
dB
s
µs
µs
DIGITAL CHARACTERISTICS
(T
A
= 25 °C; VA, VDF1-VDF3 = +5 V, VD1 = +5 V; AGND, DGND1, SGND1-SGND4 = 0 V.)
Parameter
High-level Input Voltage
UP/DOWN/MUTE
Other Digital Inputs
XTALI
ISA Bus Pins I0 = -24.0 mA
IOCHRDY, SDA
(Note 6)
All Others
I0 = -1.0 mA
Symbol
V
IH
Min
3.0
2.0
VDF-1.0
-
2.4
-
2.4
-
-
-
-10
-10
Max
-
-
-
0.8
VD1
VDF
VDF
0.4
0.4
0.4
10
10
Units
V
V
V
V
V
V
V
V
V
V
µA
Low-level Input Voltage
High-level Output Voltage:
V
IL
V
OH
Low-level Output Voltage:
ISA Bus Pins
I0 = 24.0 mA
MCLK, SDOUT, MIDOUT, IOCHRDY I0 = 8.0 mA
All Others
I0 = 4.0 mA
Input Leakage Current
(Digital Inputs)
Output Leakage Current
Note
(High-Z Digital Outputs)
V
OL
µA
6. Open Collector pins. High level output voltage dependent on external pull up (required) used and
number of peripherals (gates) attached.
6
DS252PP2
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