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參數(shù)資料
| 型號： | DS1802 |
| 廠商： | DALLAS SEMICONDUCTOR |
| 元件分類： | 數(shù)字電位計(jì) |
| 英文描述： | Dual Audio Taper Potentiometer with Push Button Control(帶按鈕控制的雙路音頻抽頭電位器) |
| 中文描述： | DIGITAL POTENTIOMETER, 3-WIRE SERIAL CONTROL INTERFACE, 65 POSITIONS, PDIP20 |
| 封裝： | 0.300 INCH, DIP-20 |
| 文件頁數(shù)： | 5/15頁 |
| 文件大?。?/td> | 97K |
| 代理商： | DS1802 |
DS1802
022698 5/15
Contact closure is defined as the transition from a high
level to a low level on the contact closure input terminals.
The DS1802 interprets input pulse widths as the means
of controlling wiper movement. A single pulse input over
the UCx or DCx input terminals will cause the wiper to
move one position. A transition from high to low on these
inputs is considered the beginning of pulse activity or
contact closure. A single pulse is defined as being
greater than 1 ms but lasting no longer than a second.
This is shown is Figure 4(a).
Repetitive pulsed inputs can be used to step through
each resistive position of the device in a relatively fast
manner (see Figure 4(b)). The requirement for repetitive
pulsed inputs is that pulses must be separated by a mini-
mum time of 1 ms. If not, the DS1802 will nterpret repeti-
tive pulses as a single pulse.
Pulse inputs lasting longer than 1 second will cause the
wiper to move one position every 100 ms following the ni-
tial 1 second hold time. The total time to transcend the
entire potentiometer using a continuous input pulse is
given by the formula below:
1 (second) + 63 X 100 ms =7.3 (seconds)
Single Contact Closure
Single contact closure operation allows the user to con-
trol wiper movement in either direction from a single
push–button input. Figure 2(a), as mentioned, presents
a typical single push–button configuration.
In independent mode control, the UC0 and UC1 inputs
are used to increment and decrement each respective
wiper position for single push–button mode of operation.
The DC0 and DC1 inputs provide no functionality in the
single push–button configuration but must be connected
to the positive supply voltage (V
CC
). In stereo mode con-
trol, the VU and B0 nputs are used to control volume and
balance. The VD and B1 inputs provide no functionality
in the single push–button configuration but must be con-
nected to the positive supply voltage (V
CC
). The 3–wire
serial port inputs (RST, CLK, and D) must be grounded
when not used.
On device power–up, the configuration shown in Figure
2(a) must exist n order to enter the single contact closure
mode of operation; especially and specifically, the (DC0,
DC1, VD, and B1) input’s connection to the positive sup-
ply voltage (V
CC
).
The direction of wiper movement, in single push–button
operation, is determined by prior activity; with the direc-
tion of wiper movement being opposite to that of the pre-
vious activity.
Changing the direction of wiper movement in single
push–button configuration is accomplish by a period of
inactivity on the controlling nput of a (minimum) 1 second
or greater. For example, when operating from indepen-
dent mode control, an inactivity of 1 second or greater on
the UC0 input will cause the direction of the potentiome-
ter–0 wiper to reverse. The same is true for the UC1
input. Also, in independent mode control and single
push–button configuration, as the wiper reaches the end
of the potentiometer range its direction of movement
reverses. This will occur regardless if the input is a con-
tinuous pulse, a sequence of repetitive pulses or a single
pulse.
In stereo mode control, the VU input is responsible for
both directions of wiper movement. Again, a period of
inactivity will allow the direction of volume to be reversed.
Additionally, if either wiper reaches a peak position, the
direction of movement will automatically reverse.
For balance mode control, the B0 input will be responsi-
ble for wiper movement. A period of inactivity lasting 1
second or more will cause a switch n balance movement
(i.e., balance–0 to balance–1).
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| DS1806 | Digital Sextet Potentiometer(數(shù)字六位電位器) |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| DS1802+ | 功能描述:數(shù)字電位計(jì) IC Dual Audio Taper Potentiometer 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 |
| DS1802E | 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 |
| DS1802E/T&R | 制造商:Maxim Integrated Products 功能描述:DUAL AUDIO TAPER W/PB TSSOP T&R - Tape and Reel 制造商:Maxim Integrated Products 功能描述:IC POT DL AUDIO TAP W/PB 20TSSOP |
| DS1802E/T&R | 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 |
| DS1802E+ | 功能描述:數(shù)字電位計(jì) IC Dual Audio Taper Potentiometer 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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