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参数资料
| 型号： | DS1882E-050+T&R |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 13/15页 |
| 文件大小： | 0K |
| 描述： | IC POT DIGIT DL LOG 50K 16TSSOP |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 1,000 |
| 接片： | 64 |
| 电阻（欧姆）： | 45k |
| 电路数： | 2 |
| 温度系数： | 标准值 750 ppm/°C |
| 存储器类型： | 非易失 |
| 接口： | I²C（设备位址） |
| 电源电压： | 4.5 V ~ 7 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-TSSOP（0.173"，4.40mm 宽） |
| 供应商设备封装： | 16-TSSOP |
| 包装： | 带卷 (TR) |
DS1882
Dual Log Audio Digital Potentiometer
_____________________________________________________________________
7
Detailed Description
The DS1882 is a dual-channel, digitally controlled,
audio potentiometer. The Block Diagram illustrates the
features of the DS1882. The following sections discuss
these features in detail.
Potentiometer Configurations
The DS1882 potentiometers have two possible attenua-
tion configuration options. The Configuration Register
section discusses how to change between the two
options. Note that both potentiometers are always set to
the same option.
The factory default for both potentiometers is Option 1
(see Table 1). Option 1 provides 64 positions with 1dB
attenuation per step for positions 0 through 62 and
mute as position 63. Option 2 (see Table 2) is a 34-
position configuration. From position 0, the first 12
steps have 1dB attenuation per step, the next 12 have
2dB attenuation per step, and the following 8 steps
have 3dB attenuation per step. The last position, posi-
tion 33, is the mute setting.
Zero-Crossing Detection
Zero-crossing detection is a user-selectable feature
used to help eliminate clicking or popping noises dur-
ing changes of potentiometer settings. See the
Configuration Register section to learn how to enable
the zero-crossing detection feature.
After the I2C master issues a command to change the
wiper position and the DS1882 has responded with an
acknowledge (ACK) to the command, the DS1882 has
a 50ms window to change the wiper position. The
DS1882 constantly monitors the voltage of the high and
low terminals of both potentiometers. During the 50ms
window, if the zero-crossing detection is enabled, then
each potentiometer’s wiper will change position if the
high and low terminals of the same potentiometer
become equal in potential (i.e., the magnitude of the
input signal is zero). If a zero-crossing event does not
occur within the 50ms window, then the wiper is
allowed to change to the new position regardless of the
state of the input signal. When the zero-crossing detec-
tion feature is not enabled, the DS1882 will allow wiper
movement as soon as the DS1882 has issued the
acknowledge to the master-controlling device.
Table 1. Configuration Option 1
TAP POSITION
ATTENUATION (dB)
00
11
22
33
44
55
66
77
88
……
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
90
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相关代理商/技术参数 |
参数描述 |
|---|---|
| DS1882Z-050 | 制造商:Maxim Integrated Products 功能描述:DUAL NV +/-5V AUDIO POT SOIC-16 - Rail/Tube |
| DS1882Z-050/T&R | 制造商:Maxim Integrated Products 功能描述:DUAL NV +/-5V AUDIO POT SOIC16 T& - Tape and Reel |
| DS1882Z-050+ | 功能描述:数字电位计 IC Dual NV Audio Taper RoHS:否 制造商:Maxim Integrated 电阻:200 Ohms 温度系数:35 PPM / C 容差:25 % POT 数量:Dual 每 POT 分接头:256 弧刷存储器:Volatile 缓冲刷: 数字接口:Serial (3-Wire, SPI) 描述/功能:Dual Volatile Low Voltage Linear Taper Digital Potentiometer 工作电源电压:1.7 V to 5.5 V 电源电流:27 uA 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:TQFN-16 封装:Reel |
| DS1882Z-050+T&R | 制造商:Maxim Integrated Products 功能描述:DGTL POTENTIOMETER 64POS 45KOHM DUAL 16SOIC N - Tape and Reel 制造商:Maxim Integrated Products 功能描述:IC POT DIGIT DL LOG 50K 16SOIC 制造商:Maxim Integrated Products 功能描述:Digital Potentiometer ICs Dual NV Audio Taper |
| DS1882Z-050+T&R | 功能描述:数字电位计 IC Dual NV Audio Taper RoHS:否 制造商:Maxim Integrated 电阻:200 Ohms 温度系数:35 PPM / C 容差:25 % POT 数量:Dual 每 POT 分接头:256 弧刷存储器:Volatile 缓冲刷: 数字接口:Serial (3-Wire, SPI) 描述/功能:Dual Volatile Low Voltage Linear Taper Digital Potentiometer 工作电源电压:1.7 V to 5.5 V 电源电流:27 uA 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:TQFN-16 封装:Reel |
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