AT73C240_14 Datasheet, PDF (6/38 Pages) ATMEL Corporation – 90 dB SNR Playback Stereo Channels

7. Audio DAC
7.1 Electrical Specifications
AVDD, AVDDHS = 2.7 V, T_A = 25°C, typical case, unless otherwise noted.
All noise and distortion specifications are measured in the 20 Hz to 0.425xFs range and A-weighted filtered.
Full-scale levels scale proportionally with the AVDD / AVDDHS supply voltage.
Table 7-1. Electrical Specifications
Overall
Operating Temperature (ambient)
Analog Supply Voltage (AVDD, AVDDHS)
Digital Supply Voltage (VDIG)
DIGITAL INPUTS/OUTPUTS
Resolution
Logic Family
Logic Coding
Analog Performance - DAC to Line-out/Headphone Output
Output level for full scale input (for AVDD, AVDDHS = 2.8 V)
Output common mode voltage
Output load resistance (on HSL, HSR)
Headphone load
Line load
Output load capacitance (on HSL, HSR)
Headphone load
Line load
Signal to Noise Ratio (-1dBFS @ 1kHz input and 0dB Gain)
Line and Headphone loads, A-Weighted
Total Harmonic Distortion (-1dBFS @ 1kHz input and 0dB Gain)
Line Load
Headphone Load
Headphone Load (16 Ohm)
Dynamic Range (measured with -60 dBFS @ 1kHz input, extrapolated to
full-scale), A Weighted
Line Load
Headphone Load
Interchannel mismatch
Left-channel to right-channel crosstalk (300 Hz to 20kHz)
Output Headset Driver Level Control Range
Output Headset Driver Level Control Step
Maximum output power, headphone 32 Ohms load, 1% THD
Min
Typ
Max
-40
+25
+85
2.7
2.8
3.3
2.4
2.8
3.3
20
CMOS
2's Complement
6.20
1.75
0.5 x
AVDDHS
16
32
10
30
1000
30
150
90
-80
-75
-65
-40
90
80
0.1
1
-65
-5
5
2.5
15
Units
°C
V
V
bits
mVrms
Vpp
V
Ohms
kOhms
pF
pF
dB
dB
dB
dB
dB
dB
dB
dB
dB
dB
mVrms
6 AT73C240
6464A–PMAAC–28-Apr-09