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參數(shù)資料
| 型號(hào)： | DS3908N+T&R |
| 廠商： | Maxim Integrated Products |
| 文件頁(yè)數(shù)： | 10/11頁(yè) |
| 文件大?。?/td> | 0K |
| 描述： | IC POT DUAL DIGITAL 14-TDFN |
| 產(chǎn)品培訓(xùn)模塊： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 標(biāo)準(zhǔn)包裝： | 2,500 |
| 接片： | 64 |
| 電阻（歐姆）： | 100k |
| 電路數(shù)： | 2 |
| 溫度系數(shù)： | 標(biāo)準(zhǔn)值 50 ppm/°C |
| 存儲(chǔ)器類(lèi)型： | 非易失 |
| 接口： | I²C（設(shè)備位址） |
| 電源電壓： | 3 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： | 14-WFDFN 裸露焊盤(pán) |
| 供應(yīng)商設(shè)備封裝： | 14-TDFN-EP（3x3） |
| 包裝： | 帶卷 (TR) |
DS3908
Dual, 64-Position Nonvolatile Digital
Potentiometer with Buffered Outputs
8
_____________________________________________________________________
Writes to this register are similar to writes to the poten-
tiometer register. A stop condition must follow the write
to ensure that the EEPROM is modified. A repeated
start condition before a stop condition following a write
operation will prevent the settings from being stored in
EEPROM. (See the I2C Communication section for
more details.)
Write Protection
The write-protect pin has an internal pullup resistor. To
adjust the potentiometers’ position, this pin must be
grounded. This pin can be left floating or connected to
VCC to write protect the EEPROM memory. All registers
can be read when the device is write protected.
When writing to the DS3908, the potentiometer will
adjust to the new setting once it has acknowledged the
new data that is being written, and the EEPROM (used
to make the setting nonvolatile) will be written following
the stop condition at the end of the write command. To
change the setting without changing the EEPROM, ter-
minate the write with a repeated start condition before
the next stop condition occurs. Using a repeated start
condition prevents the 20ms (maximum) delay required
for the EEPROM write cycle to finish.
Programmable Amplifier Control
The gain of both DS3908 amplifiers is controlled by
writing to register address FBh. The most significant
nibble of the FBh address controls the PGA1 gain, and
the least significant nibble controls the PGA0 gain. The
format of each nibble is shown in the tables below:
Table 2. Programmable Amplifier Register
REGISTER FORMAT (BINARY)
ADDRESS
PGA1
PGA0
R*
G12
G11
G10
R*
G02
G01
G00
FBh
bit7
bit0
Default value = 11h.
*Reserved for future use, write to zeros.
Table 3. Programmable Amplifier Gain Codes
Gx2Gx1Gx0
AMPLIFIER GAIN (V/V)
00X
1
01X
2
1XX
4
X = Don’t care.
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| DS3911 | 制造商:MAXIM 制造商全稱(chēng):Maxim Integrated Products 功能描述:Temperature-Controlled, Nonvolatile, I2C Quad DAC |
| DS3911T+ | 功能描述:ADC / DAC多通道 Fast APD Bias RoHS:否 制造商:Texas Instruments 轉(zhuǎn)換速率: 分辨率:8 bit 接口類(lèi)型:SPI 電壓參考: 電源電壓-最大:3.6 V 電源電壓-最小:2 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-40 |
| DS3911T+T | 功能描述:ADC / DAC多通道 Fast APD Bias RoHS:否 制造商:Texas Instruments 轉(zhuǎn)換速率: 分辨率:8 bit 接口類(lèi)型:SPI 電壓參考: 電源電壓-最大:3.6 V 電源電壓-最小:2 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-40 |
| DS3920 | 制造商:MAXIM 制造商全稱(chēng):Maxim Integrated Products 功能描述:Fast Current Mirror |
| DS3920_1112 | 制造商:MAXIM 制造商全稱(chēng):Maxim Integrated Products 功能描述:Fast Current Mirror |
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