TLC320AD56C Datasheet, PDF (29/43 Pages) Texas Instruments – Sigma-Delta Analog Interface Circuit

4.3.4.2 ADC Signal-to-Distortion (see Note 5)
PARAMETER
TEST CONDITIONS MIN TYP MAX UNIT
VI = – 1 dB
78
VI = – 3 dB
74
79
VI = – 6 dB
77
82
Signal-to-total harmonic distortion (THD)
VI = – 9 dB
80
85
dB
VI = – 40 dB
65
70
VI = – 65 dB
42
47
VAUX = – 9 dB
80
85
NOTE 5: The test condition is a 1020-Hz input signal with an 8-kHz conversion rate. Input and output voltages are
referred to VDD /2.
4.3.4.3 ADC Signal-to-Distortion, DV_DD = 3 V (see Note 5)
PARAMETER
TEST CONDITIONS
MIN TYP MAX UNIT
VI = – 1 dB
79
VI = – 3 dB
90
95
VI = – 6 dB
92 100
Signal-to-total harmonic distortion (THD)
VI = – 9 dB
94 103
dB
VI = – 40 dB
68
76
VI = – 65 dB
42
52
VAUX = – 9 dB
94 103
NOTE 5: The test condition is a 1020-Hz input signal with an 8-kHz conversion rate. Input and output voltages are
referred to VDD /2.
4.3.4.4 ADC Signal-to-Distortion+Noise (see Note 5)
PARAMETER
TEST CONDITIONS MIN TYP MAX UNIT
VI = – 1 dB
77
VI = – 3 dB
73
78
VI = – 6 dB
73
78
Total harmonic distortion + noise (THD+N)
VI = – 9 dB
72
77
dB
VI = – 40 dB
41
46
VI = – 65 dB
16
21
VAUX = – 9 dB
72
77
NOTE 5: The test condition is a 1020-Hz input signal with an 8-kHz conversion rate. Input and output voltages are
referred to VDD /2.
4–3