參數(shù)資料
型號(hào)： DS1882
廠商： Maxim Integrated Products, Inc.
元件分類： 數(shù)字電位計(jì)
英文描述： Dual Log Audio Digital Potentiometer
中文描述： 雙路、對(duì)數(shù)音量調(diào)節(jié)電位器
文件頁數(shù)： 3/15頁
文件大?。?/td> 251K
代理商： DS1882
D
Dual Log Audio Digital Potentiometer
_____________________________________________________________________
3
I
2
C CHARACTERISTICS (See Figure 4)
(V
DD
= +4.5V to +5.5V, V
CC
= +4.5V to +7.0V, V- = -4.5V to -7.0V, T
A
= -40
°
C to +85
°
C. Timing referenced to V
IL(MAX)
and V
IH(MIN)
.)
PARAMETER
SYMBOL
f
SCL
CONDITIONS
MIN
0
TYP
MAX
400
UNITS
kHz
SCL Clock Frequency
(Note 9)
Bus Free Time Between STOP and
START Conditions
t
BUF
1.3
μs
Hold Time (Repeated) START Condition
Low Period of SCL
High Period of SCL
Data Hold Time
Data Setup Time
START Setup Time
t
HD:STA
t
LOW
t
HIGH
t
HD:DAT
t
SU:DAT
t
SU:STA
0.6
1.3
0.6
0
200
0.6
μs
μs
μs
μs
ns
μs
0.9
SDA and SCL Rise Time
t
R
(Note 10)
20 +
0.1C
B
300
ns
SDA and SCL Fall Time
t
F
(Note 10)
20 +
0.1C
B
0.6
300
ns
STOP Setup Time
SDA and SCL Capacitive Loading
EEPROM Write Time
t
SU:STO
C
B
t
W
μs
pF
ms
(Note 10)
(Note 11)
400
10
5
ANALOG POTENTIOMETER CHARACTERISTICS
(V
DD
= +4.5V to +5.5V, V
CC
= +4.5V to +7.0V, V- = -4.5V to -7.0V, T
A
= -40
°
C to +85
°
C.)
PARAMETER
SYMBOL
R
EE
CONDITIONS
MIN
TYP
45
MAX
UNITS
k
%
ppm/
°
C
End-to-End Resistance
End-to-End Resistance Tolerance
Ratiometric Temperature Coefficient
+25
°
C
+25
°
C
(Note 6)
-20
+20
30
End-to-End Resistance Temperature
Coefficient
(Note 6)
750
ppm/
°
C
Wiper Resistance
Absolute Attenuation Tolerance
Mute Position Attenuation
Step Size Deviation from Nominal
Interchannel Matching
-3dB Cutoff Frequency
R
W
160
250
+0.5
dB
dB
dB
dB
MHz
(Note 7)
-0.5
100
(Note 7)
(Note 7)
10pF load
-0.25
-0.5
+0.25
+0.5
5
Output Noise
20Hz to 20kHz, grounded input,
tap = -6dB
2.2
μV
RMS
Crosstalk
1kHz, grounded input, tap = -6dB
-120
dB
THD+N
1kHz, tap = -6dB, C
L
= 10pF
(Note 8)
0.005
%
Zero-Crossing Detection
t
ZCD
38
50
ms
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