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鍙冩暩(sh霉)璩囨枡
| 鍨嬭櫉(h脿o)锛� | DS3502U+ |
| 寤犲晢锛� | Maxim Integrated Products |
| 鏂囦欢闋�(y猫)鏁�(sh霉)锛� | 8/11闋�(y猫) |
| 鏂囦欢澶�?銆�?/td> | 0K |
| 鎻忚堪锛� | IC POT DGTL NV 128TAP 10-MSOP |
| 鐢�(ch菐n)鍝佸煿瑷�(x霉n)妯″锛� | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 妯�(bi膩o)婧�(zh菙n)鍖呰锛� | 556 |
| 鎺ョ墖锛� | 128 |
| 闆婚樆锛堟瓙濮嗭級锛� | 10k |
| 闆昏矾鏁�(sh霉)锛� | 1 |
| 婧害绯绘暩(sh霉)锛� | 妯�(bi膩o)婧�(zh菙n)鍊� ±4 ppm/°C |
| 瀛樺劜(ch菙)鍣ㄩ鍨嬶細 | 闈炴槗澶� |
| 鎺ュ彛锛� | I²C锛堣ō(sh猫)鍌欎綅鍧€锛� |
| 闆绘簮闆诲锛� | 2.5 V ~ 5.5 V |
| 宸ヤ綔婧害锛� | -40°C ~ 100°C |
| 瀹夎椤炲瀷锛� | 琛ㄩ潰璨艰 |
| 灏佽/澶栨锛� | 10-TFSOP锛�10-MSOP锛�0.118"锛�3.00mm 瀵級 |
| 渚涙噳(y墨ng)鍟嗚ō(sh猫)鍌欏皝瑁濓細 | 10-µMAX |
| 鍖呰锛� | 绠′欢 |
绗�1闋�(y猫)绗�2闋�(y猫)绗�3闋�(y猫)绗�4闋�(y猫)绗�5闋�(y猫)绗�6闋�(y猫)绗�7闋�(y猫)鐣�(d膩ng)鍓嶇8闋�(y猫)绗�9闋�(y猫)绗�10闋�(y猫)绗�11闋�(y猫)
DS3502
High-Voltage, NV, I2C POT
6
_______________________________________________________________________________________
I2C
INTERFACE
WIPER
REGISTER/
INITIAL VALUE
REGISTER
(WR/IVR)
00h
VCC
SDA
A0
A1
CONTROL
LOGIC/
REGISTER
(02h)
RH
RL
V+
POS 7Fh
POS 00h
GND
SCL
MODE BIT
RW
DS3502
Simplified Functional Diagram
Detailed Description
The DS3502 contains a single potentiometer whose
wiper position is controlled by the value in the Wiper
Register (WR). The initial power-up value of the wiper
position is set by programming the Initial Value Register
(IVR). On power-up, the data stored in the IVR register
is loaded into the WR register, which sets the position
of the potentiometer鈥檚 wiper.
Control Register
The Control Register (CR) located in register 02h con-
tains the WR/IVR Address Mode bit (MODE bit). The
MODE bit determines how I2C data is written to the WR
and IVR data register as follows:
MODE = 0: I2C writes to memory address 00h write to
(CR = 00h) both WR and IVR.
I2C reads from address 00h read from WR.
MODE = 1: I2C writes to memory address 00h write to
(CR = 80h) WR.
I2C reads from address 00h read from WR.
Regardless of the setting of the MODE bit, all I2C reads
of address 00h return the contents of the WR register.
Setting MODE = 1 allows for quick writing of SRAM
without the added delay of writing to the associated
EEPROM register. The data that is stored in EEPROM
and SRAM remains unchanged if the MODE bit is tog-
gled. The volatile CR register powers up as 00h, set-
ting the device into MODE = 0.
Digital Potentiometer Output
The potentiometer consists of 127 resistors in series
connected between the RH and RL pins. Between each
resistance and at the two endpoints, RH and RL, solid-
state switches enable RW to be connected within the
resistive network. The wiper position and the output on
RW are decoded based on the value in WR. If RH, RL,
and RW are externally connected in a voltage-divider
configuration, then the voltage on RW can be easily
calculated using the following equation:
where WR is the wiper position in decimal (0鈥�127).
VV
WR
VV
RW
RL
RH
RL
=+
127
()
Table 1. Memory Map
REGISTER
NAME
ADDRESS
(HEX)
FACTORY/POWER-UP DEFAULT
(HEX)
WR/IVR
Wiper Register/Initial Value Register
00
40
CR
Control Register
02
00 (Mode 0)
鐩搁棞(gu膩n)PDF璩囨枡 |
PDF鎻忚堪 |
|---|---|
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鐩搁棞(gu膩n)浠ｇ悊鍟�/鎶€琛�(sh霉)鍙冩暩(sh霉) |
鍙冩暩(sh霉)鎻忚堪 |
|---|---|
| DS3502U+ | 鍔熻兘鎻忚堪:鏁�(sh霉)瀛楅浕浣嶈▓(j矛) IC High-Voltage NV I2C RoHS:鍚� 鍒堕€犲晢:Maxim Integrated 闆婚樆:200 Ohms 婧害绯绘暩(sh霉):35 PPM / C 瀹瑰樊:25 % POT 鏁�(sh霉)閲�:Dual 姣� POT 鍒嗘帴闋�:256 寮у埛瀛樺劜(ch菙)鍣�:Volatile 绶╂矕鍒�: 鏁�(sh霉)瀛楁帴鍙�:Serial (3-Wire, SPI) 鎻忚堪/鍔熻兘:Dual Volatile Low Voltage Linear Taper Digital Potentiometer 宸ヤ綔闆绘簮闆诲:1.7 V to 5.5 V 闆绘簮闆绘祦:27 uA 鏈€澶у伐浣滄韩搴�:+ 125 C 瀹夎棰�(f膿ng)鏍�:SMD/SMT 灏佽 / 绠遍珨:TQFN-16 灏佽:Reel |
| DS3502U+T&R | 鍒堕€犲晢:Maxim Integrated Products 鍔熻兘鎻忚堪:MXMDS3502U+T&R HIGH-VOLTAGE NV I?掳?C POTEN 鍒堕€犲晢:Maxim Integrated Products 鍔熻兘鎻忚堪:DGTL POTENTIOMETER 128POS 10KOHM SGL 10USOP - Tape and Reel 鍒堕€犲晢:Maxim Integrated Products 鍔熻兘鎻忚堪:IC POT DGTL NV 128TAP 10-MSOP 鍒堕€犲晢:Maxim Integrated Products 鍔熻兘鎻忚堪:Digital Potentiometer ICs High-Voltage NV I2C |
| DS3502U+T&R/C | 鍒堕€犲晢:Maxim Integrated Products 鍔熻兘鎻忚堪:DIGITAL POTENTIOMETER 128POS 10KOHM SINGLE 10-PIN USOP T/R - Tape and Reel 鍒堕€犲晢:Maxim Integrated Products 鍔熻兘鎻忚堪:IC POT DGTL NV 128TAP 10-USOP 鍒堕€犲晢:Maxim Integrated Products 鍔熻兘鎻忚堪:Digital Potentiometer ICs High-Voltage NV I2C |
| DS3502U+T&R | 鍔熻兘鎻忚堪:鏁�(sh霉)瀛楅浕浣嶈▓(j矛) IC High-Voltage NV I2C RoHS:鍚� 鍒堕€犲晢:Maxim Integrated 闆婚樆:200 Ohms 婧害绯绘暩(sh霉):35 PPM / C 瀹瑰樊:25 % POT 鏁�(sh霉)閲�:Dual 姣� POT 鍒嗘帴闋�:256 寮у埛瀛樺劜(ch菙)鍣�:Volatile 绶╂矕鍒�: 鏁�(sh霉)瀛楁帴鍙�:Serial (3-Wire, SPI) 鎻忚堪/鍔熻兘:Dual Volatile Low Voltage Linear Taper Digital Potentiometer 宸ヤ綔闆绘簮闆诲:1.7 V to 5.5 V 闆绘簮闆绘祦:27 uA 鏈€澶у伐浣滄韩搴�:+ 125 C 瀹夎棰�(f膿ng)鏍�:SMD/SMT 灏佽 / 绠遍珨:TQFN-16 灏佽:Reel |
| DS3502U+T&R/C | 鍔熻兘鎻忚堪:鏁�(sh霉)瀛楅浕浣嶈▓(j矛) IC High-Voltage NV I2C RoHS:鍚� 鍒堕€犲晢:Maxim Integrated 闆婚樆:200 Ohms 婧害绯绘暩(sh霉):35 PPM / C 瀹瑰樊:25 % POT 鏁�(sh霉)閲�:Dual 姣� POT 鍒嗘帴闋�:256 寮у埛瀛樺劜(ch菙)鍣�:Volatile 绶╂矕鍒�: 鏁�(sh霉)瀛楁帴鍙�:Serial (3-Wire, SPI) 鎻忚堪/鍔熻兘:Dual Volatile Low Voltage Linear Taper Digital Potentiometer 宸ヤ綔闆绘簮闆诲:1.7 V to 5.5 V 闆绘簮闆绘祦:27 uA 鏈€澶у伐浣滄韩搴�:+ 125 C 瀹夎棰�(f膿ng)鏍�:SMD/SMT 灏佽 / 绠遍珨:TQFN-16 灏佽:Reel |
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