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AT73C240
Table 7-1.
Electrical Specifications (Continued)
Maximum output slope at power up (100 to 220 μF coupling capacitor)
Min
Typ
Max
3
Units
V/s
Analog Performance - Line-in/Microphone Input to Line-out/Headphone Output
Output level
@ AVDD, AVDDHS = 2.7 V and 0 dB gain, 500mV Rms
input level, 2 X 10k Ohms loads (HSL, HSR)
@ AVDD, AVDDHS = 2.7 V and 20 dB gain, 500mV Rms
input level, 2 X 32 Ohms loads (HSL, HSR)
Input common mode voltage
1.62
570
1.58
560
0.5 x AVDD
Vpp
mVrms
Vpp
mVrms
V
Input impedance
7
10
kOhm
Signal to Noise Ratio
500mV Rms @ 1kHz input and 0 dB gain
50mV Rms @ 1kHz input and 20 dB gain
80
85
70
dB
dB
Dynamic Range (extrapolated to nominal 500mV level)
-60 dBr (500 mVrms)@ 1kHz input and 0 dB gain (10k Ohms load)
-60 dBr 50 mVrms) @ 1kHz input and 20 dB gain (10k Ohms load)
Total Harmonic Distortion, A-Weighted, line 10k Ohms load
85
85
dB
dB
500mV Rms @ 1kHz input and 0 dB gain
50mV Rms @ 1kHz input and 20 dB gain
-85
-78
-80
-70
dB
dB
Total Harmonic Distortion, A-Weighted, line 32 Ohms load
500mV Rms @ 1kHz input and 0 dB gain
50mV Rms @ 1kHz input and 20 dB gain
Interchannel mismatch
Left-channel to right-channel crosstalk (300Hz to 20kHz)
-70
-65
0.1
-65
-60
-55
1
dB
dB
dB
dB
Analog Performance - PA Driver
Differential output level for one input 500mV Rms singlel
@ AVDD, AVDDHS = 2.8 V
Differential output level for stereo inputs 500mV Rms singlel
@ AVDD, AVDDHS = 2.8 V, inputs internally summed
Output common mode voltage
500
1
0.5xAVDDHS
mVrms
Vrms
V
Output load (on each input, DC decoupled to the ground)
Gain (one single input to differential output), 20Hz to 20kHz
Signal to Noise Ratio (500mV Rms output @ 1kHz)
Total Harmonic Distortion (500mV Rms @ 1kHz output)
2 x 10kOhm balanced load
10
-05
50
0
80
-80
30
0.5
kOhm
pF
dB
dB
dB
7
6464A–PMAAC–28-Apr-09
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