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參數(shù)資料
| 型號(hào)： | DS1881E-050+ |
| 廠商： | Maxim Integrated Products |
| 文件頁(yè)數(shù)： | 4/16頁(yè) |
| 文件大小： | 0K |
| 描述： | IC DGTL POT NV 2CH 45K 16TSSOP |
| 產(chǎn)品培訓(xùn)模塊： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 標(biāo)準(zhǔn)包裝： | 96 |
| 接片： | 64 |
| 電阻（歐姆）： | 45k |
| 電路數(shù)： | 2 |
| 溫度系數(shù)： | 標(biāo)準(zhǔn)值 750 ppm/°C |
| 存儲(chǔ)器類(lèi)型： | 非易失 |
| 接口： | I²C（設(shè)備位址） |
| 電源電壓： | 2.7 V ~ 5.5 V |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類(lèi)型： | 表面貼裝 |
| 封裝/外殼： | 16-TSSOP（0.173"，4.40mm 寬） |
| 供應(yīng)商設(shè)備封裝： | 16-TSSOP |
| 包裝： | 管件 |
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DS1881
Dual NV Audio Taper Digital Potentiometer
12
____________________________________________________________________
I2C Interface for the DS1881
The CE pin serves as a communication enable pin.
When active (CE = 0), the inputs SDA and SCL are rec-
ognized by the device. If inactive (CE = 1), pins SDA
and SCL are disabled, making I2C communication
impossible.
Three pins, A0, A1, A2, serve as slave address inputs.
For multidrop configurations, they allow eight such
devices to be addressed by the same I2C bus. If the
I2C address matches the hardware levels of these bits,
the DS1881 is allowed to receive communications from
the I2C bus.
The I2C slave address byte is shown below. This is the
first byte transmitted from the master to the DS1881.
The upper nibble value is fixed to 0101. Bit values A2,
A1, and A0 are determined by the states of the corre-
sponding pins. The LSB, R/W, determines whether a
read or write will be performed.
The next byte to be transmitted is the Command Byte
(see the Command Byte section for details).
READ PROTOCOL
0
MSB
LSB
POT-0
1
0
MSB
LSB
POT-1
A
0
A
1
A
2
1
10 1
0
MSB
LSB
R/W = 1
DATA BYTES ARE READ IN THE ORDER SHOWN ABOVE.
COMMAND
BYTE
COMMAND
BYTE
COMMAND
BYTE
SLAVE ADDRESS
BYTE
MSB
LSB
CONFIG
REG
10
ST
AR
T
ACK
STOP
Figure 1. Read Protocol
SLAVE ADDRESS BYTE
0
1
0
1
A2A1A0
R/W
MSB
LSB
Reading Pot Values
As shown in Figure 1, the DS1881 provides one read
command operation. This operation allows the user to
read both Potentiometer Wiper Setting Registers and
the Configuration Register. To initiate a read operation,
the R/W bit of the slave address byte is set to 1.
Communication to read the DS1881 begins with a
START condition, which is issued by the master device.
The slave address byte sent from the master device fol-
lows the START condition. Once a matching slave
address byte has been received by the DS1881, the
DS1881 responds with an acknowledge. The master
can then begin to receive data. The value of the wiper
of Potentiometer 0 is the first returned from the DS1881.
It is then followed by the value of Potentiometer 1 and
then the value of the Configuration Register. Once the 8
bits of the Configuration Register have been sent, the
master needs to issue an acknowledge, unless it is the
last byte to be read, in which case the master issues a
not acknowledge. If desired, the master may stop the
communication transfer at this point by issuing the
STOP condition after the not acknowledge. However, if
the value of the three registers is needed again, the
transfer can continue by clocking the 8 bits of the
Potentiometer 0 value as described above.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| DS1881E-050/T&R | 制造商:Maxim Integrated Products 功能描述:DUAL NV 45K AUDIO POT TSSOP 16 TRL - Tape and Reel |
| DS1881E-050+ | 功能描述:數(shù)字電位計(jì) IC Dual NV Audio Taper 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(chǔ)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 |
| DS1881E-050+T&R | 制造商:Maxim Integrated Products 功能描述:DGTL POTENTIOMETER 64POS 45KOHM DUAL 16TSSOP - Tape and Reel |
| DS1881E-050+T&R | 功能描述:數(shù)字電位計(jì) IC Dual NV Audio Taper 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(chǔ)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 |
| DS1881Z-045 | 制造商:MAXIM 制造商全稱(chēng):Maxim Integrated Products 功能描述:Dual NV Audio Taper Digital Potentiometer |
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