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參數資料
| 型號： | AV2636 |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | 24-bit 192kHz Stereo Audio DAC |
| 中文描述： | 24位192kHz立體聲音頻DAC |
| 文件頁數： | 4/16頁 |
| 文件大小： | 821K |
| 代理商： | AV2636 |
AV2636
Product Datasheet
ELECTRICAL CHARACTERISTICS
(Test conditions: VDD = 3.3V, GND = 0V, T
A
= +25
C, fs = 48kHz, MCK = 256fs unless otherwise stated.
The measurement bandwidth is from 20Hz to 20kHz.)
PARAMETERS
DC Electrical Characteristics
Supply current (VDD = 3.3V)
Supply current (VDD = 2.5V)
Digital I/O Levels (TTL Level)
Digital input high level
Digital input low level
Digital output high level (I
OH
= 2mA)
Digital output low level (I
OL
= 2mA)
Analog Characteristics
Reference voltage
Full scale analog output level
Minimum resistive load
Maximum capacitive load
Output DC level
DAC Analog Output Performance
(Test load R
L
= 10k
, C
L
= 10pF)
SNR
THD+N
(1kHz, 0dBFs input)
Dynamic Range
(1kHz, -60dBFs input)
SNR
THD+N
(1kHz, 0dBFs input)
Dynamic Range
(1kHz, -60dBFs input)
Channel separation (1kHz)
Interchannel gain mismatch
Program gain range
Notes:
1. SNR is measured as the ratio of output level with 1kHz full scale signal, to output level with all zero
signal into the digital input. The measurement is over 20Hz to 20kHz bandwidth with a ‘A-weight’ filter.
2. THD is measured at the output with 1kHz full scale signal into the digital input. The measurement is
over 20Hz to 20kHz bandwidth.
3. Dynamic Range is the ratio of maximum output over minimum output. It is normally measured by
THD+N at the output with an input signal that is 60dB below full scale. The 60dB is then added back
to the THD+N value for the final result.
4. Channel separation is also known as channel cross talk. It is measured by sending a 1kHz full scale
signal into one channel and measuring the output value at the other channel.
5. All measurements are done with a 20kHz low pass filter. Fail to use the filter will result in reduced
performance reading.
6. The VCM pin should be decoupled with a 10uF capacitor in parallel with a 0.1uF capacitor. Smaller
value may result in reduced performance.
SYMBOL
MIN
TYP
MAX
UNITS
I
DD
I
DD
10
7
mA
mA
V
IH
V
IL
V
OH
V
OL
2.0
V
V
V
V
0.8
VDD–0.2
GND+0.2
VCM
AOUT
R
L
C
L
VDD/2
VDD/3.3
VDD/2
V
Vrms
k
pF
V
10
100
102
-90
98
100
-90
96
-95
0.1
dB
dB
dB
dB
dB
dB
dB
dB
dB
VDD = 3.3V
VDD = 2.5V
-
∞
+6
AVS Technology, Inc.
www.avstech.com
4-16
August 18, 2004
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