TLC320AD80 Datasheet, PDF (26/37 Pages) Texas Instruments – Audio Processor Subsystem

3.3.4 Wideband Multiplexer Performance, T_A = 25°C, AV_DD = DV_DD = 5 V ± 5%
PARAMETER
TEST CONDITIONS
MIN TYP MAX UNITS
3-dB Bandwidth
MUX IN1 or MUX IN2 inputs
90
kHz
Signal-to-noise ratio (SNR)
Unweighted, referenced to 0 dB,
fs = 50 Hz to 47 kHz
70
85
dB
Total harmonic distortion (THD)
Unweighted, referenced to 0 dB,
fs = 50 Hz to 47 kHz
0.1%
Frequency response
50 Hz to 47 kHz
±0.35
dB
Deviation from linear phase
50 Hz to 47 kHz
±2
degrees
3.3.5 PCM Audio Channel Performance, T_A = 25°C, AV_DD = DV_DD = 5 V ± 5%,
f_s = 48 kHz
PARAMETER
TEST CONDITIONS
MIN TYP MAX UNITS
DAC resolution (see Note 5)
16
Bits
Signal-to-noise ratio (SNR)
(see Note 5)
A-weighted, referenced to –3 dB, fs
76
82
dB
Total harmonic distortion (THD)
(see Note 5)
A-weighted, referenced to –3 dB, fs
0.02%
Total harmonic distortion + noise
(THD+N) (see Note 5)
A-weighted, referenced to –3 dB, fs
–70
–74
dB
Total harmonic distortion + noise
(THD+N) without de-emphasis
A-weighted, referenced to –3 dB, fs
62
66
dB
Signal-to-intermodulation distortion
–74
dB
Frequency response
Deviation from linear phase
Crosstalk isolation
0 to 0.4 fs
0 to 0.4 fs
–0.5
0.5 dB
±1.4
degrees
–72
–78
dB
Audible out of band energy
Total out of band energy
Pole location
De-emphasis,
50/15 µs
Zero location
Attenuation
0.55 fs to 22 kHz
0.55 fs to 3 MHz
fs = 32, 44.1, and 48 kHz only
fs = 32, 44.1, and 48 kHz only
fs = 32, 44.1, and 48 kHz only,
20 log (15/50)
–60
dB
–45
dB
3.18
kHz
10.6
kHz
–10.5
dB
NOTE 5: Measurements are performed with de-emphasis enabled.
3.3.6 DAC Interpolation Filter, T_A = 25°C, AV_DD = DV_DD = 5 V ± 5%, f_s = 48 kHz
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ _PARAMETER
TEST CONDITIONS
MIN TYP MAX UNITS
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ Passband
Passband ripple
fs = Audio sample rate
0
0.4 fs kHz
±0.1 dB
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ _{Transition band}
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ _Stopband
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ _{Stopband attenuation}
0.4 fs
>0.6 fs
74
0.6 fs kHz
kHz
dB
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ _{Group delay}
ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ _{Group delay variation versus frequency}
30/fs
sec
0.1/fs
sec
3–4