TLC320AD75 Datasheet, PDF (27/43 Pages) Texas Instruments – 20-Bit Sigma-Delta Stereo ADA Circuit

3.3.3 ADC Performance, f_s = 44.1 kHz, Bandwidth = 22.05 kHz
PARAMETER
Resolution
DYNAMIC PERFORMANCE
Signal to noise (EIAJ)
Dynamic range
Signal to noise + distortion (THD + N)
Total harmonic distortion (THD)
Interchannel isolation
DC ACCURACY
TEST CONDITIONS
INLP = INRP = 2.5 V dc
INLM = INRM = 2.5 V dc
– 60 dB input
– 0.5 dB input
Absolute gain error
Interchannel gain mismatch
Offset drift
– 0.5 dB IN
MIN
TYP
20
96
100
100
0.0017%
0.001%
120
± 0.2
± 0.2
± 0.2
0
MAX UNIT
Bits
dB
dB
0.003%
dB
± 0.5
dB
dB
dB
LSB/°C
3.3.4 DAC Performance, 20-Bit Mode, f_s = 44.1 kHz, Bandwidth = 22.05 kHz
PARAMETER
TEST CONDITIONS
MIN TYP
Resolution
See Note 5
20
Signal-to-noise ratio
Signal-to-noise + distortion
(THD + N)
See Note 5
See Note 5
De-emphasis
not selected
100 104
0.0013%
NOTE 5: These specifications are measured at the output (VO) of the external low-pass filter.
3.3.5 ADC Inputs
MAX
0.0025%
UNIT
bits
dB
PARAMETER
ANALOG INPUT
Input voltage range
Input impedance
TEST CONDITIONS
Differential
0 to peak
MIN TYP MAX UNIT
6.4
V
3.2
200
kΩ
3.3.6 ADC High-Pass Filter, f_s = 44.1 kHz
PARAMETER
Passband (–3 dB)
Passband
Group delay
TEST CONDITIONS
5 Hz
3.3.7 ADC Decimation Filter, f_s = 44.1 kHz
PARAMETER
Passband ripple
Stopband attenuation
Group delay
TEST CONDITIONS
20.03 kHz
24.07 kHz
MIN TYP
0.86
–0.12
1/fs
MAX
UNIT
Hz
dB
s
MIN TYP
± 0.01
80
25/fs
MAX
UNIT
dB
dB
s
3–3