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
文件頁數(shù)： 15/24頁
文件大?。?/td> 154K
代理商： UDA1340
1997 Jul 09
15
Philips Semiconductors
Preliminary specification
Low-voltage low-power stereo audio
CODEC with DSP features
UDA1340
DC CHARACTERISTICS
V
DDD
= V
DDA
= V
DDO
= 3 V; T
amb
= 25
°
C; R
L
= 5 k
; note 1; all voltages referenced to ground (pins 1, 11, 22 and 27);
unless otherwise specified.
Notes
1.
2.
All power supply pins (V
DD
and V
SS
) must be connected to the same external power supply unit.
When higher capacitive loads must be driven then a 100
resistor must be connected in series with the DAC output
in order to prevent oscillations in the output operational amplifier.
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
Supply
V
DDA(ADC)
V
DDA(DAC)
V
DDO
V
DDD
I
DDA(ADC)
ADC analog supply voltage
DAC analog supply voltage
operational amplifiers supply voltage
digital supply voltage
ADC supply current
2.7
2.7
2.7
2.7
3.0
3.0
3.0
3.0
4.5
200
3.5
15
4
15
6
3
3
3.6
3.6
3.6
3.6
V
V
V
V
mA
μ
A
mA
μ
A
mA
μ
A
mA
mA
mA
operation mode
ADC power-down
operation mode
DAC power-down
operation mode
DAC power-down
operation mode
DAC power-down
ADC power-down
I
DDA(DAC)
DAC supply current
I
DDO
operational amplifier supply current
I
DDD
digital supply current
Digital input pins
V
IH
V
IL
I
LI
C
i
Digital output pins
V
OH
V
OL
Analog-to-digital converter
V
ref
R
o(ref)
R
i
C
i
Digital-to-analog converter
V
ref
R
o(ref)
R
o
I
o(max)
HIGH level input voltage
LOW level input voltage
input leakage current
input capacitance
0.8V
DDD
0.5
V
DDD
+ 0.5 V
+0.2V
DDD
10
10
V
μ
A
pF
HIGH level output voltage
LOW level output voltage
I
OH
=
2 mA
I
OL
= 2 mA
0.85V
DDD
0.4
V
V
reference voltage
V
refA
reference output resistance
input resistance
input capacitance
with respect to V
SSA
pin 4
1 kHz
0.45V
DDA
0.5V
DDA
0.55V
DDA
V
k
k
pF
24
9.8
20
reference voltage
V
refD
reference output resistance
DAC output resistance
maximum output current
with respect to V
SSA
pin 28
0.45V
DDA
0.5V
DDA
0.55V
DDA
3.0
V
k
mA
28
0.13
0.22
(THD + N)/S < 0.1%
R
L
= 5 k
R
L
C
L
load resistance
load capacitance
3
200
k
pF
note 2
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