CS42438_07 Datasheet, PDF (25/61 Pages) Cirrus Logic – 108 dB, 192 kHz 6-In, 8-Out TDM CODEC

CS42438
DC ELECTRICAL CHARACTERISTICS
(AGND = 0 V; all voltages with respect to ground.)
Parameters
Symbol
Normal Operation (Note 25)
Power Supply Current
Power Dissipation
VA = 5.0 V I_A
VLS = VLC = VD = 3.3 V
(Note 26) I_DT
VLS = VLC = VD = 3.3 V, VA = 5 V
Power Supply Rejection Ratio
(Note 27)
1 kHz PSRR
60 Hz
Power-Down Mode (Note 28)
Power Dissipation
VLS = VLC = VD = 3.3 V, VA = 5 V
VQ Characteristics
Nominal Voltage
Output Impedance
DC Current Source/Sink (Note 29)
FILT+ Nominal Voltage
Min Typ Max
-
80
-
-
60.6
-
-
600 850
-
60
-
-
40
-
-
1.25
-
- 0.5•VA -
-
23
-
-
-
10
-
VA
-
Units
mA
mA
mW
dB
dB
mW
V
kΩ
μA
V
Notes:
25. Normal operation is defined as RST = HI with a 997 Hz, 0 dBFS input to the DAC and AUX port, and a
1 kHz, -1 dB analog input to the ADC port sampled at the highest F_s for each speed mode. DAC outputs
are open, unless otherwise specified.
26. I_DT measured with no external loading on pin 2 (SDA).
27. Valid with the recommended capacitor values on FILT+ and VQ. Increasing the capacitance will also
increase the PSRR.
28. Power-Down Mode is defined as RST = LO with all clocks and data lines held static and no analog input.
29. Guaranteed by design. The DC current draw represents the allowed current draw from the VQ pin due
to typical leakage through the electrolytic de-coupling capacitors.
DIGITAL INTERFACE SPECIFICATIONS & CHARACTERISTICS
Parameters (Note 30)
High-Level Output Voltage at I_o=2 mA
Low-Level Output Voltage at I_o=2 mA
High-Level Input Voltage
Low-Level Input Voltage
Leakage Current
Input Capacitance (Note 22)
Symbol Min
Typ
Serial Port
VLS-1.0
-
Control Port V_OH VLC-1.0
-
Serial Port
-
-
Control Port ^VOL
-
-
Serial Port
0.7xVLS
-
Control Port V_IH 0.7xVLC
-
Serial Port
-
-
Control Port V_IL
-
-
I_in
-
-
-
-
Max
-
-
0.4
0.4
-
-
0.2xVLS
0.2xVLC
±10
10
Units
V
V
V
V
V
V
V
V
μA
pF
Notes:
30. See “Digital I/O Pin Characteristics” on page 8 for serial and control port power rails.
DS646F2
25