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參數(shù)資料
| 型號： | DS1800 |
| 英文描述： | Dual Inverting Log Gain/Attenuator |
| 中文描述： | 雙反向登錄增益/衰減器 |
| 文件頁數(shù)： | 3/14頁 |
| 文件大小： | 428K |
| 代理商： | DS1800 |
DS1800
3
of
14
OUT0, OUT1
- Analog Outputs. These pins should be connected to the output terminal of the operational
amplifier as shown in Figure 2. These inputs are referenced as OUTx in the Figure 2 drawing.
W0, W1
- Wiper Terminals. The wiper terminals of each pot are connected to the inverting terminal of
the operational amplifier. The position of the wiper terminal is selected either through CPU control or
pushbutton control.
P0A, P1A
- Attenuation Pushbutton Inputs. These pushbutton inputs are used to control wiper position of
the part. Activity on these inputs will cause the position of the wiper to move towards the OUT0, and
OUT1 terminals, respectively.
P0G, P1G
- Gain Pushbutton Inputs. These pushbutton inputs control wiper position and are used to
move the position of the wiper towards the IN0 and IN1 terminals, respectively.
RST
- Serial Port Reset. The
RST
input deactivates the 3-wire serial interface. This input is active when
in the low state. All 3-wire communications must take place when this input is in a high state.
CLK
- Serial Clock Input. The CLK input is the positive-edge clock signal input used for 3-wire timing
synchronization.
D
- Serial Data Input. The D input is used to input serial data for wiper position changes.
C
OUT
- Serial Cascade Output. The C
OUT
is an output signal used to read the contents of the current
settings of the wiper positions. As data is clocked into the D input, data corresponding to the wipers are
shifted out of the C
OUT
pin.
MODE
- Pushbutton Debounce Control. The MODE pin is used to choose between a fast and slow mode
of pushbutton debouncing. When in a high state, pushbutton debounce is slow. When in a low-state,
pushbutton debounce is faster. These timing differences are discussed in the section entitled “Pushbutton
Interface Control.” The state of this pin is determined only at device power-up.
POWER-UP CONDITIONS
The position of the wipers of the DS1800 on power-up are internally set to position 127, which is the last
position before mute. The user then has the responsibility of changing the wiper position to the desired
attenuation/ gain levels.
Additionally, the serial port is stable and active within 10 microseconds. The contact closure control
interface inputs are active after 50 ms.
INTERFACE CONTROL OPTIONS
Control of the DS1800 is provided via two types of interface ports. A 3-wire CPU control interface
allows the exact wiper positions of the potentiometers to be written using two 8-bit words. A cascade
output, C
OUT
, is provided when controlling multiple devices via one CPU or when reading the wiper
positions of each potentiometer.
The second interface is a contact closure interface that allows pushbuttons to control movement of the
wiper positions. Under pushbutton control no external debounce or timing circuitry is needed. A block
diagram of the DS1800 is shown in Figure 1.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| DS1801 | Dual Audio Taper Potentiometer |
| DS1801E | Dual Audio Taper Potentiometer |
| DS1801S | Dual Audio Taper Potentiometer |
| DS1802 | Dual Audio Taper Potentiometer With Pushbutton Control |
| DS1822-PAR | Econo 1-Wire?? Parasite-Power Digital Thermometer |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| DS1800-3 | 功能描述:線性和開關(guān)式電源 12V output, 1800W 1U x 4.2" x 11" RoHS:否 制造商:TDK-Lambda 產(chǎn)品:Switching Supplies 開放式框架/封閉式:Enclosed 輸出功率額定值:800 W 輸入電壓:85 VAC to 265 VAC 輸出端數(shù)量:1 輸出電壓（通道 1）:20 V 輸出電流（通道 1）:40 A 商用/醫(yī)用: 輸出電壓（通道 2）: 輸出電流（通道 2）: 安裝風(fēng)格:Rack 長度: 寬度: 高度: |
| DS1801 | 功能描述:數(shù)字電位計 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 |
| DS1801+ | 功能描述:數(shù)字電位計 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 |
| DS1801E | 制造商:DALLAS 制造商全稱:Dallas Semiconductor 功能描述:Dual Audio Taper Potentiometer |
| DS1801E-014 | 功能描述:數(shù)字電位計 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 |
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