User Manual
18 DS851F2
CS42L56
HP OUTPUT CHARACTERISTICS
Test conditions (unless otherwise specified): Connections to the CS42L56 are shown in the “Typical Connection Diagrams” on
page 11; Input test signal is a full-scale 997 Hz sine wave; All Supplies = VA, VCP Mode; GND = AGND = 0 V; T
A
= +25C;
Measurement bandwidth is 20 Hz to 20 kHz; Sample Frequency = 48 kHz; Test load R
L
= 10 k C
L
=150 pFfor a line load,
and test load R
L
=16 C
L
= 150 pF for a headphone load (See Figure 6 on page 21); Measurement signal path is SDIN to
HPOUTx.
VA = 2.5 V VA = 1.8 V
Parameter (Note 15)
Min Typ Max Min Typ Max Unit
Line Load R
L
= 10 k(+2 dB Analog Gain) (Note 14)
Dynamic Range
18 to 24-Bit A-weighted
unweighted
16-Bit A-weighted
unweighted
92
89
-
-
98
95
96
94
-
-
-
-
90
87
-
-
96
93
94
92
-
-
-
-
dB
dB
dB
dB
Total Harmonic Distortion + Noise (Note 16)
18 to 24-Bit 0 dB
-20 dB
-60 dB
16-Bit 0 dB
-20 dB
-60 dB
-
-
-
-
-
-
-84
-75
-35
-82
-74
-34
-78
-
-30
-
-
-
-
-
-
-
-
-
-85
-73
-33
-83
-72
-32
-79
-
-28
-
-
-
dB
dB
dB
dB
dB
dB
Full-scale Output Voltage (Note 17)
1.56•VA 1.64•VA 1.73•VA 1.56•VA 1.64•VA 1.73•VA V
PP
HP Load R
L
= 16 (-4 dB Analog Gain) (Note 14)
Dynamic Range
18 to 24-Bit A-weighted
unweighted
16-Bit A-weighted
unweighted
89
86
-
-
95
92
93
90
-
-
-
-
88
85
-
-
94
91
92
89
-
-
-
-
dB
dB
dB
dB
Total Harmonic Distortion + Noise (Note 16)
- -75 -69 - -75 -69 dB
Full-scale Output Voltage (Note 17)
0.76•VA 0.82•VA 0.88•VA 0.76•VA 0.82•VA 0.88•VA V
PP
Output Power (Note 16)
-32- -17-mW
Other Characteristics for R
L
= 16
or 10 k
Interchannel Isolation 10 k
(Note 17) 16
-
-
90
90
-
-
-
-
90
90
-
-
dB
dB
Interchannel Gain Mismatch (Note 17)
- 0.1 0.28 - 0.1 0.28 dB
Output Offset Mute
(Note 17) 0 dB Analog Gain
-
-
0.5
3.9
1.0
±15.1
-
-
0.5
3.1
1.0
±11.4
mV
mV
Gain Drift (Note 17)
- ±100 - - ±100 - ppm/°C
Load Resistance (R
L
) (Note 17)
16 - - 16 - -
Load Capacitance (C
L
) (Note 17)
- - 150 - - 150 pF