DS1802：双路音量调节电位器，带有按钮控制 _ BDTIC 中国领先电子元器件代理商

DS1802：双路音量调节电位器，带有按钮控制

Like the DS1801, the DS1802 consists of two 65-position, 45kΩ digital potentiometers with logarithmic resistance properties incrementing 1dB per step. It can be operated under automatic software control via a serial 3-wire interface where wiper settings are written with 8-bit words, or under pushbutton control with simple contact closure. The part can be used in either 3V or 5V environments and anywhere within the industrial temperature range of -40°C to +85°C. The DS1802 supports daisy-chaining with other devices under single-processor control. In addition, the DS1802 features four contact closure points for pushbutton control. When combined with mode control, this allows eight different pushbutton control functions. Secondly, the DS1802's potentiometers can be controlled separately or in stereo mode control where wipers from both pots are positioned together from one control input.The DS1802 provides high-performance audio volume and tone control in most applications where mechanical potentiometers are used, including CD players, guitar amplifiers, and sound boards. Digital potentiometers consume very low power while providing digital accuracy and reliability under flexible, automatic processor control.

关键特性

Two digitally controlled, 65-position potentiometers
Ultra low-power consumption
Software and hardware controlled mute
Digital or mechanical pushbutton wiper control
Potentiometers can be linked for stereo control
Logarithmic resistive characteristics (1dB per step)
Zero-crossing detection to eliminate noise
Serial port communication
Can be daisy-chained for single-processor, multidevice designs
Operating temperature range: -40°C to +85°C
Operating voltage range: 3V or 5V
Resistance available: 45kΩ

DS1802：原理框图

数据手册DataSheet

语言	下载文件	备注
英文	DS1802.pdf	Rev 1; 05/2001

关键参数

Part Number	Taper	POTs	Control Interface	Wiper Memory	Steps	R_END-TO-END (kΩ)	Res. Tol. (%)	Temp. Coeff. (ppm/°C)	Wiper Resistance (Ω)	I_CC @5V (µA)	Package/Pins	Budgetary Price
Part Number	Taper	POTs	Control Interface	Wiper Memory	Steps	R_END-TO-END (kΩ)	Res. Tol. (%)	typ	typ	max	Package/Pins	See Notes
DS1802	Log	2	3-Wire Serial and Push-Button (Up/Down)	Volatile	64	45	20	750	400	80	PDIP(N)/20 SOIC(W)/20 TSSOP/20	$3.85 @1k

技术资料

订购型号

型号	注	状况	推荐替代产品	封装	温度	RoHS/无铅
DS1802	50kΩ	停止供货	DS1802+	PDIP(N),；20引脚；217.1mm²	-40°C至+85°C	RoHS/无铅：否
DS1802+	50kΩ	生产中		PDIP(N),；20引脚；217.1mm²	-40°C至+85°C	RoHS/无铅：无铅
DS1802E	50kΩ	停止供货	DS1802E+	TSSOP,；20引脚；45.2mm²	-40°C至+85°C	RoHS/无铅：否
DS1802E+	50kΩ	生产中		TSSOP,；20引脚；45.2mm²	-40°C至+85°C	RoHS/无铅：无铅
DS1802E+T&R	50kΩ	生产中		TSSOP,；20引脚；45.2mm²	-40°C至+85°C	RoHS/无铅：无铅
DS1802E/T&R	50kΩ	停止供货	DS1802E+T&R	TSSOP,；20引脚；45.2mm²	-40°C至+85°C	RoHS/无铅：否
DS1802K		生产中		N/A；	-40°C至+85°C	参考数据资料
DS1802S	50kΩ	停止供货	DS1802S+	SOIC(W),；20引脚；138.5mm²	-40°C至+85°C	RoHS/无铅：否
DS1802S+	50kΩ	生产中		SOIC(W),；20引脚；138.5mm²	-40°C至+85°C	RoHS/无铅：无铅
DS1802S/T&R	50kΩ	停止供货	DS1802S+T&R	SOIC(W),；20引脚；138.5mm²	-40°C至+85°C	RoHS/无铅：否