参数资料
型号: DS1801S+T&R
厂商: Maxim Integrated Products
文件页数: 3/10页
文件大小: 0K
描述: IC POT DUAL AUDIO TAPER 16-SOIC
产品培训模块: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
标准包装: 1,000
接片: 64 + 静音
电阻(欧姆): 45k
电路数: 2
温度系数: 标准值 750 ppm/°C
存储器类型: 易失
接口: 3 线串口
电源电压: 2.7 V ~ 5.5 V
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 16-SOIC(0.295",7.50mm 宽)
供应商设备封装: 16-SOIC W
包装: 带卷 (TR)
DS1801
2 of 10
OPERATION
The DS1801 provides two 65-position potentiometers per package, each having a logarithmic resistive
characteristic as shown in Table 1. The DS1801 is controlled by a 3-wire serial interface. The 3-wire
serial interface is designed for CPU-controlled applications and allows the potentiometer’s exact wiper
position to be read or written.
The DS1801 design supports daisy-chaining for multi-device
environments.
Figure 1 presents a block diagram of the DS1801. As shown, the inputs from the 3-wire serial interface
drive a command/control unit. The command/control unit interprets these inputs for control of the two
potentiometers.
On power-up, the serial port is stable and active within 10 microseconds. The wiper position on power-up
will be at position 63, the low end of the potentiometer. Position 64 is the mute level.
RESISTANCE CHARACTERISTICS Table 1
POSITION
OUTPUT LEVEL (dB)
00
1-1
2-2
3-3
4-4
5-5
63
-63
64(mute)
<-90
DS1801 BLOCK DIAGRAM Figure 1
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