CRD42L52 View Datasheet(PDF) - Cirrus Logic
Part Name
Description
MFG CO.
'CRD42L52' PDF : 82 Pages View PDF
5/13/08
CS42L52
ANALOG OUTPUT CHARACTERISTICS (AUTOMOTIVE - DNZ)
Test conditions (unless otherwise specified): Input test signal is a full-scale 997 Hz sine wave; All Supplies = VA; TA = -40 to
+85°C; Sample Frequency = 48 kHz and 96 kHz; Measurement bandwidth is 20 Hz to 20 kHz; Test load RL = 10 kΩ, CL = 10 pF
for the line output (see Figure 2); Test load RL = 16 Ω, CL = 10 pF (see Figure 2) for the headphone output;
HPGAIN[2:0] = 011. “Required Initialization Settings” on page 37 written on power up.
VA = 2.37 - 2.63 V
VA = 1.65 - 1.89 V
Parameters (Note 6)
RL = 10 kΩ
Dynamic Range
18- to 24-Bit
16-Bit
Total Harmonic Distortion + Noise
Min Typ Max Min Typ Max Unit
A-weighted 90
98
-
87
95
-
dB
unweighted 87
95
-
84
92
-
dB
A-weighted -
96
-
-
93
-
dB
unweighted -
93
-
-
90
-
dB
18- to 24-Bit
0 dB -
-86
-78
-
-88
-80
dB
-20 dB -
-75
-
-
-72
-
dB
-60 dB -
-35
-27
-
-32
-24
dB
16-Bit
0 dB -
-86
-
-
-88
-
dB
-20 dB -
-73
-
-
-70
-
dB
-60 dB -
-33
-
-
-30
-
dB
RL = 16 Ω
Dynamic Range
18- to 24-Bit
A-weighted 90
98
-
87
95
-
dB
unweighted 87
95
-
84
92
-
dB
16-Bit
A-weighted -
96
-
-
93
-
dB
unweighted -
93
-
-
90
-
dB
Total Harmonic Distortion + Noise
18- to 24-Bit
0 dB -
-75
-67
-
-75
-67
dB
-20 dB -
-75
-
-
-72
-
dB
-60 dB -
-35
-27
-
-32
-24
dB
16-Bit
0 dB -
-75
-
-
-75
-
dB
-20 dB -
-73
-
-
-70
-
dB
-60 dB -
-33
-
-
-30
-
dB
Other Characteristics for RL = 16 Ω or 10 kΩ
Output Parameters
Modulation Index (MI) -
0.6787
-
-
0.6787
-
(Note 7)
Analog Gain Multiplier (G) -
0.6047
-
-
0.6047
-
Full-scale Output Voltage (2•G•MI•VA)
(Note 7) Refer to the table in “Line Output Voltage Level Charac- Vpp
teristics” on page 20
Full-scale Output Power
(Note 7) Refer to the table in “Headphone Output Power Characteristics” on
page 19
Interchannel Isolation (1 kHz)
16 Ω -
80
-
-
80
-
dB
10 kΩ -
95
-
-
93
-
dB
Speaker Amp to HP Amp Isolation
-
80
-
-
80
-
dB
Interchannel Gain Mismatch
-
0.1
0.25
-
0.1
0.25
dB
Gain Drift
AC Load Resistance (RL)
Load Capacitance (CL)
-
(Note 8) 16
(Note 8) -
±100
-
-
-
-
150
-
±100
16
-
- ppm/°C
-
Ω
-
-
150
pF
8. See Figure 2. RL and CL reflect the recommended minimum resistance and maximum capacitance re-
quired for the internal op-amp's stability and signal integrity. In this circuit topology, CL will effectively
move the band-limiting pole of the amp in the output stage. Increasing this value beyond the recom-
mended 150 pF can cause the internal op-amp to become unstable.
16
DS680F1
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