CDB42L55 Cirrus Logic Inc, CDB42L55 Datasheet - Page 12

• 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

12
ANALOG INPUT CHARACTERISTICS
Test Conditions (unless otherwise specified): Connections to the CS42L55 are shown in the
gram" on page
GND = AGND = 0 V; T
Parameter
Analog In to ADC (PGA bypassed)
Dynamic Range
Total Harmonic Distortion + Noise
Analog In to PGA to ADC
Dynamic Range
PGA Setting: 0 dB
PGA Setting: +12 dB
Total Harmonic Distortion + Noise
PGA Setting: 0 dB
PGA Setting: +12 dB
Common Mode Rejection
DC Accuracy
Interchannel Gain Mismatch
Gain Drift
Offset Error
Input
Interchannel Isolation (1 kHz)
HP Amp to Analog Input Isolation
Full-scale Input Voltage
Input Impedance
4. Referred to the typical full-scale voltage. Applies to all THD+N and Dynamic Range values in the table.
5. See test figure shown below.
6.
7. Measured between AINxx and AGND.
SDOUT Code with HPFx=1;HPFRZx=0.
(Note 4)
10; Input is a 1 kHz sine wave through the passive input filter, PGA = 0 dB; All Supplies = VA;
(Note 7)
A
= +25°C; Measurement bandwidth is 20 Hz to 20 kHz. Sample Frequency = 48 kHz.
(Note 5)
100 mV
25 Hz
PGA (+12 dB)
PP
unweighted
unweighted
unweighted
PGA (0 dB)
A-weighted
A-weighted
A-weighted
R
,
R
Figure 2. CMRR Test Configuration
-20 dBFS
-60 dBFS
-60 dBFS
L
L
-1 dBFS
-1 dBFS
-1 dBFS
(Note 6)
= 10 kΩ
= 16 Ω
ADC
ADC
PGA
100 Ω
0.76•VA
0.78•VA
Min
89
86
88
85
81
78
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
1 μF
VA = 2.5 V
0.198•VA
0.80•VA
0.82•VA
±100
Typ
352
-85
-72
-32
-87
-31
-83
0.2
95
92
94
91
87
84
40
90
90
83
60
40
0.84•VA
0.86•VA
Max
-79
-26
-81
-25
-77
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
AINxREF
AINxA
0.76•VA
0.78•VA
Min
86
83
85
82
78
75
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
Figure 1. "Typical Connection Dia-
VA = 1.8 V
0.198•VA
0.80•VA
0.82•VA
±100
Typ
352
-85
-69
-29
-85
-28
-81
0.2
92
89
91
88
84
81
40
90
90
83
60
40
0.84•VA
0.86•VA
Max
-79
-23
-79
-22
-75
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
CS42L55
DS773F1
ppm/°C
Unit
LSB
Vpp
Vpp
Vpp
kΩ
kΩ
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB