- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄9298 > AD5173BRM50-RL7 (Analog Devices Inc)IC DGTL POT DUAL 50K OTP 10-MSOP PDF資料下載
參數(shù)資料
| 型號： | AD5173BRM50-RL7 |
| 廠商： | Analog Devices Inc |
| 文件頁數(shù)： | 8/28頁 |
| 文件大小： | 0K |
| 描述： | IC DGTL POT DUAL 50K OTP 10-MSOP |
| 標(biāo)準(zhǔn)包裝： | 1,000 |
| 接片： | 256 |
| 電阻（歐姆）： | 50k |
| 電路數(shù)： | 2 |
| 溫度系數(shù)： | 標(biāo)準(zhǔn)值 35 ppm/°C |
| 存儲器類型： | 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 ~ 125°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 10-TFSOP，10-MSOP（0.118"，3.00mm 寬） |
| 供應(yīng)商設(shè)備封裝： | 10-MSOP |
| 包裝： | 帶卷 (TR) |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁當(dāng)前第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁
AD5172/AD5173
Data Sheet
Rev. I | Page 16 of 28
THEORY OF OPERATION
SDA
SCL
A
W
B
FUSES
EN
DAC
REG
I2C INTERFACE
COMPARATOR
ONE-TIME
PROGRAM/TEST
CONTROL BLOCK
MUX
DECODER
FUSE
REG
0
410
3-
0
26
Figure 39. Detailed Functional Block Diagram
The AD5172/AD5173 are 256-position, digitally controlled
variable resistors (VRs) that employ fuse link technology to
achieve memory retention of the resistance setting.
An internal power-on preset places the wiper at midscale
during power-on. If the OTP function is activated, the device
powers up at the user-defined permanent setting.
ONE-TIME PROGRAMMING (OTP)
during initial power-on. After the wiper is set to the desired
position, the resistance can be permanently set by programming
the T bit high, with the proper coding (see Table 8 and Table 9),
and one-time VDD_OTP. The fuse link technology of the AD517x
family of digital potentiometers requires VDD_OTP to be between
5.6 V and 5.8 V to blow the fuses to achieve a given nonvolatile
setting. However, during operation, VDD can be 2.7 V to 5.5 V. As a
result, an external supply is required for one-time programming.
The user is allowed only one attempt to blow the fuses. If the user
fails to blow the fuses during this attempt, the structure of the
fuses can change such that they may never be blown, regardless
of the energy applied during subsequent events. For details, see
the Power Supply Considerations section.
The device control circuit has two validation bits, E1 and E0,
that can be read back to check the programming status (see
Table 7). Users should always read back the validation bits to
ensure that the fuses are properly blown. After the fuses are
blown, all fuse latches are enabled upon subsequent power-on;
therefore, the output corresponds to the stored setting. Figure 39
shows a detailed functional block diagram.
Table 7. Validation Status
E1
E0
Status
0
Ready for programming.
1
0
Fatal error. Some fuses are not blown. Do not retry.
Discard this unit.
1
Successful. No further programming is possible.
PROGRAMMING THE VARIABLE RESISTOR AND
VOLTAGE
Rheostat Operation
The nominal resistance of the RDAC between Terminal A and
Terminal B is available in 2.5 kΩ, 10 kΩ, 50 kΩ, and 100 kΩ.
The nominal resistance (RAB) of the VR has 256 contact points
accessed by the wiper terminal and the B terminal contact. The
8-bit data in the RDAC latch is decoded to select one of the
256 possible settings.
A
W
B
A
W
B
A
W
B
04
10
3-
0
27
Figure 40. Rheostat Mode Configuration
Assuming a 10 kΩ part is used, the first connection of the wiper
starts at the B terminal for Data 0x00. Because there is a 50 Ω
wiper contact resistance, such a connection yields a minimum
of 100 Ω (2 × 50 Ω) resistance between Terminal W and Ter-
minal B. The second connection is the first tap point, which
corresponds to 139 Ω (RWB = RAB/256 + 2 × RW = 39 Ω + 2 ×
50 Ω) for Data 0x01. The third connection is the next tap point,
representing 178 Ω (2 × 39 Ω + 2 × 50 Ω) for Data 0x02, and so
on. Each LSB data value increase moves the wiper up the resistor
ladder until the last tap point is reached at 10,100 Ω (RAB + 2 × RW).
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| VE-BNB-MW-F1 | CONVERTER MOD DC/DC 95V 100W |
| AD5173BRM2.5-RL7 | IC DGTL POT DUAL 2.5K OTP 10MSOP |
| VE-B6P-MY-F4 | CONVERTER MOD DC/DC 13.8V 50W |
| AD5173BRM100-RL7 | IC DGTL POT DUAL 100K OTP 10MSOP |
| VE-B6P-MY-F2 | CONVERTER MOD DC/DC 13.8V 50W |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AD5173BRMZ10 | 功能描述:IC POT DGTL DUAL 10K OTP 10MSOP RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 數(shù)字電位器 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:1 系列:- 接片:256 電阻（歐姆）:100k 電路數(shù):1 溫度系數(shù):標(biāo)準(zhǔn)值 35 ppm/°C 存儲器類型:非易失 接口:3 線串口 電源電壓:2.7 V ~ 5.25 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:8-WDFN 裸露焊盤 供應(yīng)商設(shè)備封裝:8-TDFN-EP（3x3） 包裝:剪切帶 (CT) 產(chǎn)品目錄頁面:1399 (CN2011-ZH PDF) 其它名稱:MAX5423ETA+TCT |
| AD5173BRMZ100 | 功能描述:IC POT DGTL DUAL 100K OTP 10MSOP RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 數(shù)字電位器 系列:- 標(biāo)準(zhǔn)包裝:3,000 系列:DPP 接片:32 電阻（歐姆）:10k 電路數(shù):1 溫度系數(shù):標(biāo)準(zhǔn)值 300 ppm/°C 存儲器類型:非易失 接口:3 線串行（芯片選擇，遞增，增/減） 電源電壓:2.5 V ~ 6 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:8-WFDFN 裸露焊盤 供應(yīng)商設(shè)備封裝:8-TDFN（2x3） 包裝:帶卷 (TR) |
| AD5173BRMZ1002 | 制造商:AD 制造商全稱:Analog Devices 功能描述:256-Position, One-Time Programmable, Dual-Channel, I2C Digital Potentiometers |
| AD5173BRMZ102 | 制造商:AD 制造商全稱:Analog Devices 功能描述:256-Position, One-Time Programmable, Dual-Channel, I2C Digital Potentiometers |
| AD5173BRMZ10-RL7 | 功能描述:IC POT DGTL DUAL 10K OTP 10MSOP RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 數(shù)字電位器 系列:- 標(biāo)準(zhǔn)包裝:3,000 系列:DPP 接片:32 電阻（歐姆）:10k 電路數(shù):1 溫度系數(shù):標(biāo)準(zhǔn)值 300 ppm/°C 存儲器類型:非易失 接口:3 線串行（芯片選擇，遞增，增/減） 電源電壓:2.5 V ~ 6 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:8-WFDFN 裸露焊盤 供應(yīng)商設(shè)備封裝:8-TDFN（2x3） 包裝:帶卷 (TR) |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。