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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)： | 9/15頁 |
| 文件大小： | 97K |
| 代理商： | DS1802 |
DS1802
022698 9/15
TIMING DIAGRAMS
NO TAG (cont’d)
(c) End of Communication Transaction
t
CH
RST
CLK
D
t
HLT
t
DC
t
CDH
3–WIRE INACTIVE
t
RLT
3–WIRE ACTIVE
LAST DATA BIT (b15)
C
OUT
t
PLH
CASCADE OPERATION
A feature of the DS1802 is the ability to control multiple
devices from a single processor. Multiple DS1802s can
be linked or daisy chained as shown in Figure 7. As a
data bit is entered into the I/O shift register of the DS1802
it will appear at the C
OUT
output after a maximum delay of
50 nanoseconds.
The C
OUT
output of the DS1802 can be used to drive the
D input of another DS1802. When connecting multiple
devices, the total number of bits sent is always 16 times
the number of DS1802s in the daisy chain.
An optional feedback resistor can be placed between the
C
OUT
terminal of the ast device and the D nput of the first
DS1802, thus allowing the controlling processor to circu-
larly clock data through the daisy chain. The value of the
feedback or solation resistor should be in the range from
2K to 10K ohms.
When reading data via the C
OUT
pin and isolation resis-
tor, the D line is left floating by the reading device. When
RST is driven high, bit 0 is present on the C
OUT
pin, which
is fed back to the nput D pin through the solation resistor.
When the CLK nput transitions ow to high, bit 0 s oaded
into the first position of the I/O shift register and bit 1
becomes present on C
OUT
and D of the next device.
After 16 bits (or 16 times the number of DS1802’s in the
daisy chain), the data has shifted completely around and
back to its original position. When RST transitions to the
low state to end data transfer, the value (the same as
before the read occurred) is loaded into the wiper–0 and
wiper–1.
CASCADING MULTIPLE DEVICES
Figure 7
DS1802
#1
DS1802
#2
DS1802
#n
PROCESSOR
D
D
D
C
OUT
C
OUT
C
OUT
OPTIONAL FEEDBACK RESISTOR
FOR READING DATA (2K TO 10K)
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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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