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參數(shù)資料
| 型號(hào)： | UDA1340 |
| 廠商： | NXP Semiconductors N.V. |
| 元件分類： | Codec |
| 英文描述： | Low-voltage low-power stereo audio CODEC with DSP features |
| 中文描述： | 低電壓低功耗立體聲音頻編解碼器與數(shù)字信號(hào)處理功能 |
| 文件頁(yè)數(shù)： | 14/24頁(yè) |
| 文件大?。?/td> | 154K |
| 代理商： | UDA1340 |
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1997 Jul 09
14
Philips Semiconductors
Preliminary specification
Low-voltage low-power stereo audio
CODEC with DSP features
UDA1340
D
E
-
EMPHASIS
A 2-bit value to enable the digital de-emphasis filter.
Table 13
De-emphasis settings
M
UTE
A 1-bit value to enable the digital mute.
Table 14
Mute
M
ODE
A 2-bit value to program the mode of the sound processing
filters of Bass Boost and Treble. There are three modes:
flat, min. and max.
DE1
DE0
FUNCTION
0
0
1
1
0
1
0
1
no de-emphasis
de-emphasis, 32 kHz
de-emphasis, 44.1 kHz
de-emphasis, 48 kHz
MT
FUNCTION
0
1
no muting
muting
Table 15
The flat/min./max. switch
P
OWER
C
ONTROL
A 2-bit value to disable the ADC and/or DAC to reduce
power consumption.
Table 16
Power control settings
M1
M0
FUNCTION
0
0
1
1
0
1
0
1
flat
min.
min.
max.
PC1
PC0
FUNCTION
ADC
DAC
0
0
1
1
0
1
0
1
off
off
on
on
off
on
off
on
LIMITING VALUES
In accordance with the Absolute Maximum Rating System (IEC 134). All voltage referenced to ground,
V
DDD
= V
DDA
= V
DDO
= 3 V; T
amb
= 25
°
C; unless otherwise specified.
Notes
1.
2.
All V
DD
and V
SS
connections must be made to the same power supply.
Equivalent to discharging a 100 pF capacitor via a 1.5 k
series resistor, except pins 24, 26 and 28 which can
withstand ESD pulses of
1500 V to +1500 V.
Equivalent to discharging a 200 pF capacitor via a 2.5
μ
H series inductor.
3.
THERMAL CHARACTERISTICS
SYMBOL
V
DDD
T
xtal(max)
T
stg
T
amb
V
es
PARAMETER
CONDITIONS
MIN.
MAX.
5.0
150
+125
+85
+3000
+300
UNIT
V
°
C
°
C
°
C
V
V
supply voltage
maximum crystal temperature
storage temperature
operating ambient temperature
electrostatic handling
note 1
65
20
3000
300
note 2
note 3
SYMBOL
PARAMETER
VALUE
UNIT
R
th j-a
thermal resistance from junction to ambient in free air
90
K/W
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