AT8xC51SND2C
DAC
AUDVDD, HSVDD = 2.8 V, Ta=25°C, typical case, unless otherwise noted
All noise and distortion specifications are measured in the 20 Hz to 0.425xFs and A-
weighted filtered.
Full Scale levels scale proportionally with the analog supply voltage.
Figure 148. Audio DAC Specification
OVERALL
MIN
-40
2.7
2.4
3.2
TYP
+25
2.8
2.8
-
MAX
+125
3.3
UNITS
Operating Temperature
Analog Supply Voltage (AUDVDD, HSVDD)
Digital Supply Voltage (VDD)
Audio Amplifier Supply (AUDVBAT)
DIGITAL INPUTS/OUTPUTS
Resolution
°C
V
3.3
V
5.5
V
20
Bits
Logic Family
CMOS
Logic Coding
2’s Complement
ANALOG PERFORMANCE – DAC to Line-out/Headphone Output
Output level for full scale input
1.65
Vpp
V
(for AUDVDD, HSVDD = 2.8 V)
Output common mode voltage
0.5xHSVDD
Output load resistance (on HSL, HSR)
- Headphone load
- Line load
16
32
10
Ohm
kOhm
Output load capacitance (on HSL, HSR)
- Headphone load
30
30
1000
150
pF
pF
- Line load
Signal to Noise Ratio
(–1dBFS @ 1kHz input and 0dB Gain)
- Line and Headphone loads
87
92
dB
Total Harmonic Distortion (–1dBFS @ 1kHz input and 0dB
Gain)
- Line Load
-80
-65
-40
dB
dB
dB
-76
-60
- Headphone Load
- Headphone Load (16 Ohm)
Dynamic Range (measured with -60 dBFS @ 1kHz input,
extrapolated to full-scale)
- Line Load
88
70
93
74
dB
dB
- Headphone Load
Interchannel mismatch
0.1
-90
-
1
dB
dB
dB
dB
Left-channel to right-channel crosstalk (@ 1kHz)
Output Power Level Control Range
Output Power Level Control Step
-80
6
-6
3
207
4341D–MP3–04/05
ATMEL [ ATMEL ]
