
23
11050A–PMAAC–07-Apr-10
AT73C246
DR Dynamic Range
(3)
AVDD = 3.3V 85 96 - dB
AVDD = 2.7V 82 93 - dB
THD Total Harmonic Distortion -1dBFS digital output - -84 -74 dB
XTALK Left / Right Channel separation
(5)
80 90 - dB
G
LINE
Programmable Gain Range 0 - 46 dB
Gain Step Size - 1 - dB
Mute Attenuation
(6)
80 - - dB
R
IN
Input Resistance 0dB gain 8.4 12 15.6 kΩ
C
IN
Input Capacitance - - 10 pF
Table 10-4. Playback Path: DAC Input to Headphone Output
Symbol Parameter Comments Min Typ Max Units
V
FS
Full Scale Output Voltage
(1)
0dBFs digital input signal.
AVDD /
3.3
V
RMS
SNR Signal-to-Noise Ratio
(2)
AVDD = 3.3V 92 97 - dB
AVDD = 2.7V 89 94 - dB
DR Dynamic Range
(3)
AVDD = 3.3V 92 97 - dB
AVDD = 2.7V 89 94 - dB
THD Total Harmonic Distortion
0dBFs input - 10kΩ load - -88 -80 dB
20mW output - 32Ω load - -65 -60 dB
20mW output - 16Ω load - -60 -55 dB
P
O
Output Power
32Ω load - THD < -40dB or 1% 30 mW
16Ω load - THD < -40dB or 1% 50 mW
XTALK Left / Right Channel Separation
(5)
10kΩ AC coupled load 90 dB
16Ω DC coupled load 60 dB
G
HS
Programmable Gain Range -77 - +6 dB
Gain Step Size - 1 - dB
Mute Attenuation
(6)
80 - - dB
Table 10-5. Analog Bypass Path: Line / Auxiliary Input to Headphone Output
Symbol Parameter Comments Min Typ Max Units
V
FS
Full Scale Output Voltage
(1)
AVDD /
3.3
V
RMS
SNR Signal-to-Noise Ratio
(2)
AVDD = 3.3V 92 97 - dB
AVDD = 2.7V 89 94 - dB
DR Dynamic Range
(3)
AVDD = 3.3V 92 97 - dB
AVDD = 2.7V 89 94 - dB
Table 10-3. Microphone Record Path: Microphone Input to ADC Output
Symbol Parameter Comments Min Typ Max Units
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