TLC320AD77 Datasheet, PDF (18/33 Pages) Texas Instruments – 24-Bit 96 kHz Stereo Audio Codec

3.3.2 ADC Digital Filter, T_A = 25°C, AV_DD = DV_DD = 3.3 V ± 10%, f_s = 44.1 kHz
(see Notes 3 and 4)
PARAMETER
ADC Decimation Filter (LPF)
Pass band
Pass band ripple
Stop band
Stop band attenuation
Group delay
ADC High-Pass Filter (HPF)
Pass band (–3 dB)
Deviation from linear phase
TEST CONDITIONS MIN TYP MAX UNIT
20
kHz
±0.01
dB
24.1
kHz
80
dB
720
µs
20 Hz to 20 kHz
0.87
Hz
1.23
degree
NOTES: 3. All the terms characterized by frequency, scale with the chosen sampling frequency, fs.
4. See Figure 4–6 through Figure 4–9 for performance curves on the ADC digital filter.
3.3.3
SNR
CMRR
Analog-to-Digital Converter, T_A = 25°C, AV_DD = DV_DD = 3.3 V, f_s = 44.1 kHz
(see Note 3)
PARAMETER
TEST CONDITIONS
MIN TYP MAX UNIT
Signal-to-noise ratio (EIAJ)
A-weighted
100
dB
Dynamic range
A-weighted, –60 dB, 1 kHz
100
dB
Signal-to-noise + distortion ratio
20 Hz to 20 kHz
86
dB
Power supply rejection ratio
1 kHz, See Note 5
50
dB
Idle channel tone rejection
120
dB
Intermodulation distortion
–80
dB
ADC crosstalk
100
dB
Overall ADC frequency response
20 Hz to 20 kHz
–0.1
0.1 dB
Gain error
5%
Gain matching
±0.02
dB
Full-scale differential input voltage
3.6
Vpp
Common mode rejection ratio
100
dB
NOTES: 3. All the terms characterized by frequency, scale with the chosen sampling frequency, fs.
5. Measured with a 50 mV peak sine wave.
3.3.4 DAC Interpolation Filter, T_A = 25°C, AV_DD = DV_DD = 3.3 V + 10%, f_s = 44.1 kHz
(see Notes 3 and 6)
PARAMETER
Pass band
Pass band ripple
Stop band
Stop band attenuation
Group delay
TEST CONDITIONS
28.8 kHz to 3 MHz
MIN TYP MAX
0
20
±0.005
24.1
75
700
UNIT
kHz
dB
kHz
dB
µs
NOTES: 3. All the terms characterized by frequency, scale with the chosen sampling frequency, fs.
6. See Figure 4–4 and Figure 4–5 for performance curves of the DAC digital filter.
3–2