Instruction Manual
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 kΩ, 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 kΩ (+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 k
Ω
Interchannel Isolation 3 kΩ
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