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參數(shù)資料
| 型號(hào)： | DS1666 |
| 廠商： | Maxim Integrated Products, Inc. |
| 英文描述： | Audio Digital Resistor(音頻數(shù)字電阻器) |
| 文件頁(yè)數(shù)： | 2/7頁(yè) |
| 文件大?。?/td> | 53K |
| 代理商： | DS1666 |
DS1666, DS1666S
022698 2/7
GRAPH OF AUDIO TAPER
Figure 1
0
10
20
30
40
50
60
70
80
90
100
0
5
10
15
20
25
30
35
40
45
50
55
60
65
70
75
80
85
90
95
100
LOW TERMINAL
HIGH TERMINAL
P
% OF ACTIVE DIGITAL TAPS
1
3
2
1
OPERATION
The CS, U/D and INC inputs control the position of the
wiper along the resistor array (Figure 1). When CS is ac-
tive (low), a high to low transition on the INC will incre-
ment or decrement an internal counter depending on the
level of the U/D pin. When the U/D pin is low, the counter
will decrement. When the U/D pin is high, the counter will
increment. The state of the U/D pin can be changed while
CS is active allowing for precise adjustment during cali-
bration. The output of the counter is decoded to set the
position of the wiper. When the CS input transitions to the
high (inactive) level, the value of the counter is stored and
the wiper position is maintained until power (V
CC
) is lost.
When power is restored, the DS1666 returns to the de-
fault setting and positions the wiper to 10 percent. The
value of the end–to–end and end–to–wiper position is in-
determinate while V
CC
is not applied.
The DS1666 has a resistor array that resembles an au-
dio taper potentiometer as shown in Figure 1 1. Since
the taper is not linear, exact resistance values for each
of the 128 positions of the resistor is not specified. How-
ever, the end-to-end resistance is specified to be within
±
20 percent of the stated resistor value over an indus-
trial temperature range of –40
°
C to +85
°
C.
ANALOG CHARACTERISTICS
End–to–End Resistance Tolerance =
±
20 percent
Typical Noise = <120 dB/Hz REF:IV
Temperature Coefficient =
±
800 PPM/
°
C typical
Resistance at tap #74=18%
±
2% of total resistance.
PIN DESCRIPTIONS
V
H
The high end of the potentiometer. This
terminal is capable of handling input volt-
ages between
±
5 volts.
V
L
The Low end of the potentiometer. This
terminal is capable of handling input volt-
ages between
±
5 volts.
V
W
The wiper terminal of the potentiometer.
The value of the wiper is controlled by the
U/D and the INC pins.
Up/Down
(U/D)
The U/D input controls the direc-
tion of the wiper movement when setting
the potentiometer.
Increment
(INC)
Toggling INC will move the potentiome-
ter wiper by either incrementing or decre-
menting the counter.
Chip Select The device is selected when CS input is
(CS)
low. The current counter value is stored
when CS is returned high.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| DS1666-010 | 制造商:DALLAS 制造商全稱:Dallas Semiconductor 功能描述:Audio Digital Resistor |
| DS1666-050 | 制造商:DALLAS 制造商全稱:Dallas Semiconductor 功能描述:Audio Digital Resistor |
| DS1666-10 | 功能描述:數(shù)字電位計(jì) IC RoHS:否 制造商:Maxim Integrated 電阻:200 Ohms 溫度系數(shù):35 PPM / C 容差:25 % POT 數(shù)量:Dual 每 POT 分接頭:256 弧刷存儲(chǔ)器:Volatile 緩沖刷: 數(shù)字接口:Serial (3-Wire, SPI) 描述/功能:Dual Volatile Low Voltage Linear Taper Digital Potentiometer 工作電源電壓:1.7 V to 5.5 V 電源電流:27 uA 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TQFN-16 封裝:Reel |
| DS1666-10+ | 功能描述:數(shù)字電位計(jì) IC 5V+/- Pseudo Log Audio RoHS:否 制造商:Maxim Integrated 電阻:200 Ohms 溫度系數(shù):35 PPM / C 容差:25 % POT 數(shù)量:Dual 每 POT 分接頭:256 弧刷存儲(chǔ)器:Volatile 緩沖刷: 數(shù)字接口:Serial (3-Wire, SPI) 描述/功能:Dual Volatile Low Voltage Linear Taper Digital Potentiometer 工作電源電壓:1.7 V to 5.5 V 電源電流:27 uA 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TQFN-16 封裝:Reel |
| DS1666-100 | 功能描述:數(shù)字電位計(jì) IC RoHS:否 制造商:Maxim Integrated 電阻:200 Ohms 溫度系數(shù):35 PPM / C 容差:25 % POT 數(shù)量:Dual 每 POT 分接頭:256 弧刷存儲(chǔ)器:Volatile 緩沖刷: 數(shù)字接口:Serial (3-Wire, SPI) 描述/功能:Dual Volatile Low Voltage Linear Taper Digital Potentiometer 工作電源電壓:1.7 V to 5.5 V 電源電流:27 uA 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TQFN-16 封裝:Reel |
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