TLC320AD535C-I_16 Datasheet, PDF (26/42 Pages) Texas Instruments – DUAL CHANNEL VOICE/DATA CODEC

5.3.2 ADC Channel, f_s = 8 kHz (see Note 3)
PARAMETER
TEST CONDITIONS MIN TYP MAX UNIT
0 to 300 Hz
–0.5
0.2
300 Hz to 3 kHz
–0.5
0.25
Filter gain relative to gain at 1020 Hz
3.3 kHz
3.6 kHz
–0.5
0.3
dB
–3
4 kHz
–35
≥ 4.4 kHz
–74
NOTE 3: The filter gain outside of the passband is measured with respect to the gain at 1020 Hz. The analog input test signal is a sine wave with
0 dB = 3 VI(PP) at 5-V supply and 0 dB = 2 VI(PP) at 3.3-V supply voltage as the reference level for the ADC analog input signal. The
–3-dB passband is 0 to 3600 Hz for an 8-kHz sample rate. This pass-band scales linearly with the sample rate.
5.3.3 ADC Dynamic Performance, f_s = 8 kHz
5.3.3.1 ADC Signal-to-Noise (see Note 4)
PARAMETER
TEST CONDITIONS MIN TYP MAX UNIT
VI = –1 dB
75
80
Signal-to-noise ratio (SNR)
VI = –9 dB
67
72
dB
VI = –40 dB
36
36
NOTE 4: The test condition is a 1020-Hz input signal with an 8-kHz conversion rate. Input and output are referred to 2.5 V for 5-V supply and
1.5 V for 3.3-V supply. The output configuration is in a 3.3 V single ended mode.
5.3.3.2 ADC Signal-to-Distortion (see Note 4)
PARAMETER
TEST CONDITIONS MIN TYP MAX UNIT
VI = –3 dB
73
78
Signal-to-total harmonic distortion (THD)
VI = –9 dB
77
82
dB
VI = –40 dB
56
61
NOTE 4: The test condition is a 1020-Hz input signal with an 8-kHz conversion rate. Input and output are referred to 2.5 V for 5-V supply and
1.5 V for 3.3-V supply. The output configuration is in a 3.3 V single ended mode.
5.3.3.3 ADC Signal-to-Distortion + Noise (see Note 4)
PARAMETER
TEST CONDITIONS MIN TYP MAX UNIT
VI = –3dB
72
77
Signal-to-total harmonic distortion + noise (THD + N)
VI = –9 dB
68
73
dB
VI = –40 dB
37
42
NOTE 4: The test condition is a 1020-Hz input signal with an 8-kHz conversion rate. Input and output are referred to 2.5 V for 5-V supply and
1.5 V for 3.3-V supply. The output configuration is in a 3.3 V single ended mode.
5–2