CS42L55 Datasheet, PDF (14/73 Pages) Cirrus Logic – Ultra Low Power, Stereo CODEC w/Class H Headphone Amp

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
16-Bit
A-weighted 92
98
unweighted ⁸⁹
95
A-weighted ^-
96
unweighted -
93
-
90
96
-
dB
-
87
93
-
dB
-
-
94
-
dB
-
-
91
-
dB
Total Harmonic Distortion + Noise
18 to 24-Bit
16-Bit
0 dB ^-
-20 dB ^-
-60 dB -
0 dB ^-
-20 dB ^-
-60 dB -
-84
-78
-
-85
-79
dB
-76
-
-
-74
-
dB
-36
-30
-
-34
-28
dB
-82
-
-
-83
-
dB
-74
-
-
-72
-
dB
-34
-
-
-32
-
dB
Full-scale Output Voltage (Note 13)
HP Load R_L = 16 Ω (-4 dB Analog Gain)(Note 12)
1.56•VA 1.64•VA 1.73•VA 1.56•VA 1.64•VA 1.73•VA V_PP
Dynamic Range
18 to 24-Bit
16-Bit
A-weighted ⁸⁹
95
unweighted ⁸⁶
92
A-weighted -
93
unweighted ^-
90
-
88
94
-
dB
-
85
91
-
dB
-
-
92
-
dB
-
-
89
-
dB
Total Harmonic Distortion + Noise
-
-75
-69
-
-75
-69
dB
Full-scale Output Voltage
Output Power (Note 13)
0.76•VA 0.82•VA 0.88•VA 0.76•VA 0.82•VA 0.88•VA V_PP
-
32
-
-
17
-
mW
Other Characteristics for R_L = 16 Ω or 3 kΩ
Interchannel Isolation
3 kΩ -
90
-
-
90
-
dB
16 Ω ^-
90
-
-
90
-
dB
Interchannel Gain Mismatch
Output Offset Voltage (Note 14)
-
DAC to HPOUT -
0.1
0.25
-
0.1
0.25
dB
0.5
1.0
-
0.5
1.0
mV
Gain Drift
-
±100
-
-
±100
- ppm/°C
AC-Load Resistance (R_L)
Load Capacitance (C_L)
(Note 14) ¹⁶
(Note 14) ^-
-
-
16
-
-
Ω
-
150
-
-
150
pF
14
DS773F1