TLC320AD90C Datasheet, PDF (38/51 Pages) Texas Instruments – Stereo Audio Codec

3.3.4 Analog Electrical Characteristics
3.3.4.1 Analog-to-Digital Converter, T_A = 25°C, AV_DD = DV_DD = 5 V ± 5%, f_s = 48 kHz,
Gain Settings at 0 dB, Input = 1 Vrms Sine Wave at 1 kHz
Resolution
PARAMETER
Instantaneous dynamic range (see Note 7)
Signal-to-(noise + distortion) (see Note 8)
Total harmonic distortion + noise (reference full
scale)
TEST CONDITIONS
All inputs except MIC
MIC (see Note 9)
All inputs except MIC
MIC (see Note 9)
MIN TYP MAX
16
80
85
70
72
84
88
72
77
0.004 0.007
UNIT
Bits
dB
dB
dB
dB
%
Signal-to-intermodulation distortion
Idle channel tone rejection
Offset error
ADC crosstalk
Frequency response
ADC conversion latency
Line Load
All inputs
0 to 0.4 fs
90
–105
3
–110
–0.1
16
NOTES: 7. Exceeds the AC‘97 specification. Measured using Awtd noise curve.
8. Measured using Awtd noise curve.
9. Microphone gain settings: 20-dB boost = on, gain = 12 dB
dB
dB
mV
104
dB
0.1
dB
Number of
fs periods
3.3.4.2 Digital-to-Analog Converter, T_A = 25°C, AV_DD = DV_DD = 5 V ± 5%, f_s = 48 kHz,
All Gains = 0 dB
PARAMETER
TEST CONDITIONS MIN TYP MAX UNIT
DAC resolution
16
Bits
DAC signal-to-noise ratio
see Note 10
90
93
dB
Instantaneous dynamic range
see Note 11
83
87
dB
Signal-to-noise + distortion
see Note 11
74
dB
Signal-to-intermodulation distortion
90
dB
Total harmonic distortion
0.01 0.02
%
Frequency response (20 Hz to 19.2 kHz)
–0.5
0.1
dB
Deviation from linear phase
1.4 Degree
DAC crosstalk
–99 –94
dB
DAC conversion latency
16
Number of
fs Periods
NOTES: 10. Exceeds the AC‘97 specifications. Specified as the ratio of the rms output level with 1-kHz full-scale input
to the rms output level with all zeros into the digital input. Measured Awtd over a 20-Hz to 20-kHz bandwidth
(AES17–1991 idle channel noise or EIAJ CP–307 signal-to-noise ratio).
11. Measured using Awtd noise curve.
3–3