CDB42L55 Cirrus Logic Inc, CDB42L55 Datasheet - Page 19

Eval Bd Ultra Low Power Stereo Codec

CDB42L55

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

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
19

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