Cirrus Logic CS43L22 - Manual (Page 11)

DS792F2 11
CS43L22
Confidential Draft
3/4/10
ANALOG OUTPUT CHARACTERISTICS
Test conditions (unless otherwise specified): Input test signal is a full-scale 997 Hz sine wave; All Supplies = VA; T
A
= +25 °C;
Sample Frequency = 48 kHz; Measurement bandwidth is 20 Hz to 20 kHz; Test load R
L
= 10 k
Ω, C
L
= 10 pF
for the line output
(see Figure 2 ); Test load R
L
= 16 Ω, C
L
= 10 pF (see Figure 2 ) for the headphone output; HP_GAIN[2:0] = 011.
3. One (least-significant bit) LSB of triangular PDF dither is added to data.
4. Full-scale output voltage and power is determined by the gain setting, G, in register “Headphone Analog
Gain” on page 43 . High gain settings at certain VA and VHP supply levels may cause clipping when the
audio signal approaches full-scale, maximum power output, as shown in Figures 18 - 21 on page 60 .
VA = 2.5 V VA = 1.8 V
Parameters (Note 3) Min Typ Max Min Typ Max Unit
R
L
= 10 k
Ω
Dynamic Range
18 to 24-Bit
A-weighted
unweighted
16-Bit
A-weighted
unweighted
92
89
-
-
98
95
96
93 -
-
-
- 89
86
-
-
95
92
93
90 -
-
-
- dB
dB
dB
dB
Total Harmonic Distortion + Noise
18 to 24-Bit
0 dB
-20 dB
-60 dB
16-Bit 0 dB
-20 dB
-60 dB
-
-
-
-
-
- -86
-75
-35
-86
-73
-33 -80
-
-29
-
-
-
-
-
-
-
-
- -88
-72
-32
-88
-70
-30 -82
-
-26
-
-
-
dB
dB
dB
dB
dB
dB
R
L
= 16
Ω
Dynamic Range
18 to 24-Bit
A-weighted
unweighted
16-Bit A-weighted
unweighted
92
89
-
-
98
95
96
93 -
-
-
- 89
86
-
-
95
92
93
90 -
-
-
- dB
dB
dB
dB
Total Harmonic Distortion + Noise
18 to 24-Bit
0 dB
-20 dB
-60 dB
16-Bit 0 dB
-20 dB
-60 dB
-
-
-
-
-
- -75
-75
-35
-75
-73
-33 -69
-
-29
-
-
-
-
-
-
-
-
- -75
-72
-32
-75
-70
-30 -69
-
-26
-
-
-
dB
dB
dB
dB
dB
dB
Other Characteristics for R
L
= 16
Ω or 10 kΩ
Output Parameters Modulation Index (MI)
(Note 4) Analog Gain Multiplier (G)
-
- 0.6787
0.6047 -
- -
- 0.6787
0.6047 -
- V/V
V/V
Full-scale Output Voltage (2•G•MI•VA) (Note 4) Refer to Table “Headphone Output Power Characteris-
tics” on page 14
Vpp
Full-scale Output Power (Note 4) Refer to Table “Headphone Output Power Characteristics” on
page 14
Interchannel Isolation (1 kHz) 16 Ω
10 k Ω
-
- 80
95 -
- -
- 80
93 -
- dB
dB
Speaker Amp to HP Amp Isolation - 80 - - 80 - dB
Interchannel Gain Mismatch - 0.1 0.25 - 0.1 0.25 dB
Gain Drift - ±100 - - ±100 - ppm/°C
AC-Load Resistance (R
L
) (Note 5) 16 - - 16 - - Ω
Load Capacitance (C
L
) (Note 5) - - 150 - - 150 pF