Cirrus Logic CS42L55 - Manual (Page 14)

14 DS773F1
CS42L55
HP OUTPUT CHARACTERISTICS
Test conditions (unless otherwise specified): Connections to the CS42L55 are shown in the “Typical Connection Diagram” on
page 10 ; Input test signal is a full-scale 997 Hz sine wave; All Supplies = VA, VCP Mode; GND = AGND = 0 V; T
A
= +25 °C;
Measurement bandwidth is 20 Hz to 20 kHz; Sample Frequency = 48 kHz; Test load R
L
= 3 k Ω, C
L
= 150 pF for a Line Load,
and test load R
L
= 16
Ω, C
L
= 150 pF for a headphone load. (See Figure 3 on page 15 ).
VA = 2.5 V VA = 1.8 V
Parameter (Note 11) Min Typ Max Min Typ Max Unit
Line Load R
L
= 3 k Ω (+2 dB Analog Gain) (Note 12)
Dynamic Range
18 to 24-Bit A-weighted
unweighted
16-Bit
A-weighted
unweighted
92
89
-
-
98
95
96
93 -
-
-
- 90
87
-
-
96
93
94
91 -
-
-
- 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
-
-
-
-
-
- -84
-76
-36
-82
-74
-34 -78
-
-30
-
-
-
-
-
-
-
-
- -85
-74
-34
-83
-72
-32 -79
-
-28
-
-
-
dB
dB
dB
dB
dB
dB
Full-scale Output Voltage (Note 13) 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
Ω (-4 dB Analog Gain)
(Note 12)
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 - -75 -69 - -75 -69 dB
Full-scale Output Voltage 0.76•VA 0.82•VA 0.88•VA 0.76•VA 0.82•VA 0.88•VA V
PP
Output Power (Note 13) - 32 - - 17 - mW
Other Characteristics for R
L
= 16
Ω or 3 kΩ
Interchannel Isolation 3 k Ω
16 Ω
-
- 90
90 -
- -
- 90
90 -
- dB
dB
Interchannel Gain Mismatch - 0.1 0.25 - 0.1 0.25 dB
Output Offset Voltage (Note 14) DAC to HPOUT - 0.5 1.0 - 0.5 1.0 mV
Gain Drift - ±100 - - ±100 - ppm/°C
AC-Load Resistance (R
L
) (Note 14) 16 - - 16 - - Ω
Load Capacitance (C
L
) (Note 14) - - 150 - - 150 pF