- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄9372 > ISL23415UFUZ-T7A (Intersil)IC DGTL POT 256POS 50K 10TQFN PDF資料下載
參數(shù)資料
| 型號(hào)： | ISL23415UFUZ-T7A |
| 廠商： | Intersil |
| 文件頁數(shù)： | 8/20頁 |
| 文件大小： | 0K |
| 描述： | IC DGTL POT 256POS 50K 10TQFN |
| 產(chǎn)品培訓(xùn)模塊： | Solutions for Industrial Control Applications |
| 標(biāo)準(zhǔn)包裝： | 1 |
| 系列： | XDCP™ |
| 接片： | 256 |
| 電阻（歐姆）： | 50k |
| 電路數(shù)： | 1 |
| 溫度系數(shù)： | 標(biāo)準(zhǔn)值 85 ppm/°C |
| 存儲(chǔ)器類型： | 易失 |
| 接口： | 4 線 SPI（芯片選擇） |
| 電源電壓： | 1.2 V ~ 5.5 V，1.7 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： | 標(biāo)準(zhǔn)包裝 |
| 其它名稱： | ISL23415UFUZ-T7ADKR |
ISL23415
16
FN7780.1
August 16, 2011
Applications Information
Communicating with ISL23415
Communication with ISL23415 proceeds using SPI interface
through the ACR (address 10000b) and WR (addresses 00000b)
registers.
The wiper of the potentiometer is controlled by the WR register.
Writes and reads can be made directly to these register to control
and monitor the wiper position.
Daisy Chain Configuration
When application needs more than one ISL23415, it can
communicate with all of them without additional CS lines by
daisy chaining the DCPs as shown on Figure 29. In Daisy Chain
configuration, the SDO pin of the previous chip is connected to
the SDI pin of the following chip, and each CS and SCK pins are
connected to the corresponding microcontroller pins in parallel,
like regular SPI interface implementation. The Daisy Chain
configuration can also be used for simultaneous setting of
multiple DCPs. Note, the number of daisy chained DCPs is
limited only by the driving capabilities of SCK and CS pins of
microcontroller; for larger number of SPI devices buffering of
SCK and CS lines is required.
Daisy Chain Write Operation
The write operation starts by HIGH-to-LOW transition on CS line,
followed by N number of two bytes write instructions on SDI line
with reversed chain access sequence: the instruction byte + data
byte for the last DCP in chain is going first, as shown in Figure 30,
where N is a number of DCPs in chain. The serial data is going
through DCPs from DCP0 to DCP(N-1) as follow: DCP0 --> DCP1 -->
DCP2 --> ... --> DCP(N-1). The write instruction is executed on the
rising edge of CS for all N DCPs simultaneously.
Daisy Chain Read Operation
The read operation consists of two parts: first, send the read
instructions (N two bytes operation) with valid address; second,
read the requested data while sending NOP instructions (N two
The first part starts by HIGH-to-LOW transition on CS line,
followed by N two bytes read instruction on SDI line with reversed
chain access sequence: the instruction byte + dummy data byte
for the last DCP in chain is going first, followed by LOW-to-HIGH
transition on CS line. The read instructions are executed during
second part of read sequence. It also starts by HIGH-to-LOW
transition on CS line, followed by N number of two bytes NOP
instructions on SDI line and LOW-to-HIGH transition of CS. The
data is read on every even byte during second part of read
sequence while every odd byte contains code 111b followed by
address from which the data is being read.
Wiper Transition
When stepping up through each tap in voltage divider mode,
some tap transition points can result in noticeable voltage
transients, or overshoot/undershoot, resulting from the sudden
transition from a very low impedance “make” to a much higher
impedance “break within a short period of time (<1s). There are
several code transitions such as 0Fh to 10h, 1Fh to 20h,..., EFh to
FFh, which have higher transient glitch. Note, that all switching
transients will settle well within the settling time as stated in the
datasheet. A small capacitor can be added externally to reduce
the amplitude of these voltage transients, but that will also
reduce the useful bandwidth of the circuit, thus may not be a
good solution for some applications. It may be a good idea, in
that case, to use fast amplifiers in a signal chain for fast
recovery.
VLOGIC Requirements
It is recommended to keep VLOGIC powered all the time during
normal operation. In a case where turning VLOGIC OFF is
necessary, it is recommended to ground the VLOGIC pin of the
ISL23415. Grounding the VLOGIC pin or both VLOGIC and VCC does
not affect other devices on the same bus. It is good practice to put
a 1F capacitor in parallel with 0.1F decoupling capacitor close to
the VLOGIC pin.
VCC Requirements and Placement
It is recommended to put a 1F capacitor in parallel with 0.1F
decoupling capacitor close to the VCC pin.
CS
SCK
MOSI
MISO
CS
SCK
SDI
SDO
CS
SCK
SDI
SDO
CS
SCK
SDI
SDO
CS
SCK
SDI
C
DCP0
DCP1
DCP2
DCP(N-1)
FIGURE 29. DAISY CHAIN CONFIGURATION
N DCP IN A CHAIN
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| VE-BNY-MX-F3 | CONVERTER MOD DC/DC 3.3V 49.5W |
| VE-BNY-MX-F2 | CONVERTER MOD DC/DC 3.3V 49.5W |
| VE-BNY-MW-F4 | CONVERTER MOD DC/DC 3.3V 66W |
| VE-BNY-MW-F3 | CONVERTER MOD DC/DC 3.3V 66W |
| VE-B3P-MY-F4 | CONVERTER MOD DC/DC 13.8V 50W |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ISL23415UFUZ-TK | 功能描述:數(shù)字電位計(jì) IC 256 TAP VOLATILE SPI DL FL RNG DCP 10LD 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 |
| ISL23415WFRUZ-T7A | 功能描述:數(shù)字電位計(jì) IC 256 TAP VOLATILE SPI FL RNG INC DCP 21X16 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 |
| ISL23415WFRUZ-TK | 功能描述:數(shù)字電位計(jì) IC 256 TAP VOLATILE SPI FL RNG INC DCP 21X16 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 |
| ISL23415WFUZ | 功能描述:數(shù)字電位計(jì) IC 256 TAP VOLATILE SPI DL FL RNG DCP 10LD 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 |
| ISL23415WFUZ-T7A | 功能描述:數(shù)字電位計(jì) IC 256 TAP VOLATILE SPI DL FL RNG DCP 10LD 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 |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。