參數(shù)資料
型號(hào): AD5259BRMZ10
廠商: Analog Devices Inc
文件頁(yè)數(shù): 13/24頁(yè)
文件大?。?/td> 0K
描述: IC DGTL POT 10K 256POS 10-MSOP
標(biāo)準(zhǔn)包裝: 50
接片: 256
電阻(歐姆): 10k
電路數(shù): 1
溫度系數(shù): 標(biāo)準(zhǔn)值 500 ppm/°C
存儲(chǔ)器類型: 非易失
接口: I²C(設(shè)備位址)
電源電壓: 2.7 V ~ 3.3 V,4.5 V ~ 5.5 V
工作溫度: -40°C ~ 85°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: 管件
產(chǎn)品目錄頁(yè)面: 787 (CN2011-ZH PDF)
配用: AD5259EVAL-ND - BOARD EVAL FOR AD5259 DGTL POT
AD5259
Data Sheet
Rev. C | Page 20 of 24
DISPLAY APPLICATIONS
CIRCUITRY
A special feature of the AD5259 is its unique separation of the
VLOGIC and VDD supply pins. The separation provides greater
flexibility in applications that do not always provide needed
supply voltages.
In particular, LCD panels often require a VCOM voltage in the
range of 3 V to 5 V. The circuit in Figure 46 is the rare excep-
tion in which a 5 V supply is available to power the digital
potentiometer.
05026-006
A
B
W
R2
10k
R1
70k
R3
25k
VDD
VLOGIC
SCL
SDA
GND
+
U1
AD8565
3.5V < VCOM < 4.5V
14.4V
VCC (~3.3V)
5V
AD5259
MCU
C1
1
F
R5
10k
R6
10k
Figure 46. VCOM Adjustment Application
In the more common case shown in Figure 47, only analog
14.4 V and digital logic 3.3 V supplies are available. By placing
discrete resistors above and below the digital potentiometer,
VDD can now be tapped off the resistor string itself. Based on the
chosen resistor values, the voltage at VDD in this case equals 4.8
V, allowing the wiper to be safely operated all the way up to 4.8
V. The current draw of VDD will not affect that node’s bias
because it is only on the order of microamps. VLOGIC is tied to
the MCU’s 3.3 V digital supply because VLOGIC will draw the 35
mA which is needed when writing to the EEPROM. It would be
impractical to try and source 35 mA through the 70 k resistor,
therefore, VLOGIC is not connected to the same node as VDD.
For this reason, VLOGIC and VDD are provided as two separate
supply pins that can either be tied together or treated inde-
pendently; VLOGIC supplying the logic/EEPROM with power,
and VDD biasing up the A, B, and W terminals for added
flexibility.
05026-007
A
B
W
R2
10k
R1
70k
R3
25k
VDD
VLOGIC
SCL
SDA
GND
+
U1
AD8565
3.5V < VCOM < 4.5V
14.4V
VCC (~3.3V)
AD5259
MCU
C1
1
F
R5
10k
R6
10k
SUPPLIES POWER
TO BOTH THE
MICRO AND THE
LOGIC SUPPLY OF
THE DIGITAL POT
Figure 47. Circuitry When a Separate Supply is Not Available for VDD
For a more detailed look at this application, refer to the article,
“Simple VCOM Adjustment uses any Logic Supply Voltage” in
the September 30, 2004 issue of EDN magazine.
相關(guān)PDF資料
PDF描述
AD5200BRMZ10 IC POT DGTL 10K 256POS 10MSOP
MCP79401T-I/MNY IC CLK RTCC 64B EUI-48 8-TDFN
AD5111BCPZ10-RL7 IC DGTL POT 128POS 10K 8LFCSP
AD5111BCPZ80-RL7 IC DGTL POT 128POS 80K 8LFCSP
MCP79410T-I/MNY IC RTC/CALENDAR EEPROM 8TDFN
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
AD5259BRMZ100 功能描述:IC DGTL POT 100K 256POS 10-MSOP 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(chǔ)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(yè)面:1399 (CN2011-ZH PDF) 其它名稱:MAX5423ETA+TCT
AD5259BRMZ100-R7 功能描述:IC POT DGTL 100K 256POS 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(chǔ)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)
AD5259BRMZ10-R7 功能描述:IC POT DGTL 10K 256POS 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(chǔ)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)
AD5259BRMZ5 功能描述:IC POT DGTL 5K 256POS 10-MSOP 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(chǔ)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(yè)面:1399 (CN2011-ZH PDF) 其它名稱:MAX5423ETA+TCT
AD5259BRMZ50 功能描述:IC POT DGTL 50K 256POS 10-MSOP 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:3,300 系列:WiperLock™ 接片:257 電阻(歐姆):100k 電路數(shù):1 溫度系數(shù):標(biāo)準(zhǔn)值 150 ppm/°C 存儲(chǔ)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(yīng)商設(shè)備封裝:8-DFN-EP(3x3) 包裝:帶卷 (TR)