Rainbow Electronics AT73C246 - Manual (Page 23)

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 k Ω
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 - 10k Ω load - -88 -80 dB
20mW output - 32 Ω load - -65 -60 dB
20mW output - 16 Ω load - -60 -55 dB
P
O
Output Power
32 Ω load - THD < -40dB or 1% 30 mW
16 Ω load - THD < -40dB or 1% 50 mW
XTALK Left / Right Channel Separation (5)
10k Ω AC coupled load 90 dB
16 Ω 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