- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄9297 > AD5252BRUZ1-RL7 (Analog Devices Inc)IC DGTL POT DUAL 1K 14-TSSOP PDF資料下載
參數(shù)資料
| 型號： | AD5252BRUZ1-RL7 |
| 廠商： | Analog Devices Inc |
| 文件頁數(shù)： | 10/28頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC DGTL POT DUAL 1K 14-TSSOP |
| 標準包裝： | 1,000 |
| 接片： | 256 |
| 電阻（歐姆）： | 1k |
| 電路數(shù)： | 2 |
| 溫度系數(shù)： | 標準值 650 ppm/°C |
| 存儲器類型： | 非易失 |
| 接口： | I²C（設備位址） |
| 電源電壓： | 2.7 V ~ 5.5 V，±2.25 V ~ 2.75 V |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 14-TSSOP（0.173"，4.40mm 寬） |
| 供應商設備封裝： | 14-TSSOP |
| 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頁第8頁第9頁當前第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
AD5251/AD5252
Data Sheet
Rev. D | Page 18 of 28
RDAC/EEMEM Quick Commands
The AD5251/AD5252 feature 12 quick commands that facilitate
easy manipulation of RDAC wiper settings and provide RDAC-
to-EEMEM storing and restoring functions. The command
format is shown in Figure 31, and the command descriptions
are shown in Table 9.
When using a quick command, issuing a third byte is not needed,
but is allowed. The quick commands reset and store RDAC to
EEMEM require acknowledge polling to determine whether the
command has finished executing.
RAB Tolerance Stored in Read-Only Memory
The AD5251/AD5252 feature patented RAB tolerances storage in
the nonvolatile memory. The tolerance of each channel is stored
in the memory during the factory production and can be read
by users at any time. The knowledge of the stored tolerance,
users to predict RAB accurately. This feature is valuable for
precision, rheostat mode, and open-loop applications in which
knowledge of absolute resistance is critical.
The stored tolerances reside in the read-only memory and are
expressed as percentages. Each tolerance is stored in two memory
locations (see Table 10 ). The tolerance data is expressed in sign
magnitude binary format stored in two bytes; an example is
shown in Figure 32. For the first byte in Register N, the MSB
is designated for the sign (0 = + and 1 = –) and the 7 LSB is
designated for the integer portion of the tolerance. For the
second byte in Register N + 1, all eight data bits are designated
for the decimal portion of tolerance. As shown in Table 10
data readback from Address 11000 shows 0001 1100 and
Address 11001 shows 0000 1111, then RDAC0 tolerance can be
calculated as
MSB: 0 = +
Next 7 MSB: 001 1100 = 28
8 LSB: 0000 1111 = 15 × 2–8 = 0.06
Tolerance = 28.06% and, therefore,
RAB_ACTUAL = 12.806 k
EEMEM Write-Acknowledge Polling
After each write operation to the EEMEM registers, an
internal write cycle begins. The I2C interface of the device is
disabled. To determine if the internal write cycle is complete
and the I2C interface is enabled, interface polling can be
executed. I2C interface polling can be conducted by sending a
start condition, followed by the slave address and the write bit.
If the I2C interface responds with an ACK, the write cycle is
complete and the interface is ready to proceed with further
operations. Other-wise, I2C interface polling can be repeated
until it succeeds. Command 2 and Command 7 also require
acknowledge polling.
EEMEM Write Protection
Setting the WP pin to logic low after EEMEM programming
protects the memory and RDAC registers from future write
operations. In this mode, the EEMEM and RDAC read
operations function as normal.
Table 9. RDAC-to-EEMEM Interface and RDAC Operation Quick Command Bits (CMD/REG = 1, A2 = 0)
C3
C2
C1
C0
Command Description
0
NOP
0
1
Restore EEMEM (A1, A0) to RDAC (A1, A0)1
0
1
0
Store RDAC (A1, A0) to EEMEM (A1, A0)
0
1
Decrement RDAC (A1, A0) 6 dB
0
1
0
Decrement all RDACs 6 dB
0
1
0
1
Decrement RDAC (A1, A0) one step
0
1
0
Decrement all RDACs one step
0
1
Reset: restore EEMEMs to all RDACs
1
0
Increment RDACs (A1, A0) 6 dB
1
0
1
Increment all RDACs 6 dB
1
0
1
0
Increment RDACs (A1, A0) one step
1
0
1
Increment all RDACs one step
1
0
Reserved
:
1
Reserved
1 This command leaves the device in the EEMEM read power state, which consumes power. Issue the NOP command to return the device to its idle state.
相關PDF資料 |
PDF描述 |
|---|---|
| AD5272BCPZ-20-RL7 | IC RHEOSTAT 5V 50-TP 1024 10MSOP |
| MS3106E32-15P | CONN PLUG 8POS STRAIGHT W/PINS |
| M83723/76W18086 | CONN PLUG 8POS STRAIGHT W/PINS |
| M83723/76R18087 | CONN PLUG 8POS STRAIGHT W/PINS |
| AD5272BCPZ-100-RL7 | IC RHEOSTAT 5V 50-TP 1024 10MSOP |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| AD5252BRUZ50 | 功能描述:IC DGTL POT 256P 50K DL 14TSSOP RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 數(shù)字電位器 系列:- 標準包裝:3,300 系列:WiperLock™ 接片:257 電阻（歐姆）:100k 電路數(shù):1 溫度系數(shù):標準值 150 ppm/°C 存儲器類型:易失 接口:3 線 SPI（芯片選擇） 電源電壓:1.8 V ~ 5.5 V 工作溫度:-40°C ~ 125°C 安裝類型:表面貼裝 封裝/外殼:8-VDFN 裸露焊盤 供應商設備封裝:8-DFN-EP（3x3） 包裝:帶卷 (TR) |
| AD5252BRUZ50-RL7 | 功能描述:IC POT DGTL DL 50K 256P 14TSSOP RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 數(shù)字電位器 系列:- 標準包裝:3,000 系列:DPP 接片:32 電阻（歐姆）:10k 電路數(shù):1 溫度系數(shù):標準值 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 供應商設備封裝:8-TDFN（2x3） 包裝:帶卷 (TR) |
| AD5252EVAL | 制造商:Analog Devices 功能描述:EVAL BOARD FOR AD5252 - Bulk |
| AD5253 | 制造商:AD 制造商全稱:Analog Devices 功能描述:Quad 64-/256-Position I2C Nonvolatile Memory Digital Potentiometers |
| AD5253_12 | 制造商:AD 制造商全稱:Analog Devices 功能描述:Quad 64-/256-Position I2C Nonvolatile Memory Digital Potentiometers |
發(fā)布緊急采購，3分鐘左右您將得到回復。