CDB42L55 Cirrus Logic Inc, CDB42L55 Datasheet - Page 19

• Manufacturer Part Number: CDB42L55
• Description: Eval Bd Ultra Low Power Stereo Codec
• Manufacturer: Cirrus Logic Inc

Specifications of CDB42L55

• Main Purpose: Audio, CODEC
• Embedded: Yes, FPGA / CPLD
• Utilized Ic / Part: CS42L55
• Primary Attributes: 2 Stereo Analog Inputs, Stereo Line and Headphone Outputs, S/PDIF Transmitter and Receiver
• Secondary Attributes: GUI, USB, RS232, I2C Interfaces, USB or External or Battery Power Supply
• Product: Audio Modules
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: 598-1506; CDB-42L55

DS773F1
POWER SUPPLY REJECTION (PSRR) CHARACTERISTICS
Test Conditions (unless otherwise specified): Connections to the CS42L55 are shown in the
page
Notes:
DIGITAL INTERFACE SPECIFICATIONS & CHARACTERISTICS
PSRR with 100 mVpp, 1 kHz signal
PSRR with 100 mVpp, 60 Hz signal
Input Leakage Current
Input Capacitance
1.8 V - 3.3 V Logic
High-Level Output Voltage (I
Low-Level Output Voltage (I
High-Level Input Voltage
Low-Level Input Voltage
HPDETECT Input
High-Level Input Voltage
Low-Level Input Voltage
10; GND = AGND = 0 V; all voltages with respect to ground.
20. Valid with the recommended capacitor values on FILT+ and VQ, no load on HP and Line. Increasing
21. The PGA is biased with VQ, created by a resistor divider from the VA supply.
22. See
the capacitance on FILT+ and VQ will also increase the PSRR.
“I/O Pin Characteristics” on page 9
Parameters
OL
OH
= 100 μA)
= -100 μA)
Parameters
Figure 8. Power Consumption Test Configuration
Note: Current is derived from the voltage drop across
a 1 Ω resistor in series with each supply input.
(Note 20)
(Note 20)
(Note 22)
GND/AGND
VLDO
VCP
VA
VL
2.2 µF
0.1 µF
0.1 µF
0.1 µF
PGA to HP & Line Amps
DAC to HP & Line Amps
PGA to HP & Line Amps
DAC to HP & Line Amps
PGA to ADC
for serial and control port power rails.
VL = 1.65 V
1 Ω
VL = 1.8 V
VL = 2.0 V
VL > 2.0 V
1 Ω
1 Ω
1 Ω
PGA to ADC
(Note 21)
Power Supply
ADC
ADC
Symbol
HPDV
HPDV
V
V
V
V
I
OH
OL
in
IH
IL
Min
+
Voltmeter
-
+
+
+
IH
-
-
-
IL
-
-
-
-
-
-
-
-
0.83•VL
0.76•VL
0.68•VL
0.65•VL
0.65•VA
VL - 0.2
Min
“Typical Connection Diagram” on
-
-
-
-
-
Typ
55
50
50
50
35
25
50
60
0.30•VL
0.35•VA
Max
±10
0.2
10
-
-
-
-
-
-
Max
CS42L55
-
-
-
-
-
-
-
-
Units
μA
pF
Units
V
V
V
V
V
V
dB
dB
dB
dB
dB
dB
dB
dB
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