- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄385533 > MAX5434PEZT-T (MAXIM INTEGRATED PRODUCTS INC) 256-Tap, Nonvolatile, I2C-Interface, Digital Potentiometers PDF資料下載
參數(shù)資料
| 型號： | MAX5434PEZT-T |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類： | 數(shù)字電位計 |
| 英文描述： | 256-Tap, Nonvolatile, I2C-Interface, Digital Potentiometers |
| 中文描述： | 50K DIGITAL POTENTIOMETER, 2-WIRE SERIAL CONTROL INTERFACE, 32 POSITIONS, PDSO6 |
| 封裝： | SOT-23, 6 PIN |
| 文件頁數(shù)： | 8/17頁 |
| 文件大?。?/td> | 376K |
| 代理商： | MAX5434PEZT-T |
M
32-Tap, Nonvolatile, I
2
C, Linear, Digital
Potentiometers
8
_______________________________________________________________________
Detailed Description
The MAX5432–MAX5435 contain a resistor array with
31 resistive elements. The MAX5432/MAX5434 provide
a total end-to-end resistance of 50k
, and the
MAX5433/MAX5435 provide an end-to-end resistance
of 100k
.
The MAX5432/MAX5433 allow access to the high, low,
and wiper terminals for a standard voltage-divider con-
figuration. Connect H, L, and W in any desired configu-
ration as long as their voltages fall between GND and
V
DD
. The MAX5434/MAX5435 are variable resistors
with H internally connected to the wiper.
A simple 2-wire I
2
C-compatible serial interface moves
the wiper among the 32 tap points. Eight data bits, an
address byte, and a control byte program the wiper
position. A nonvolatile memory stores and recalls the
wiper position in the nonvolatile memory upon power-up.
The nonvolatile memory is guaranteed for 200,000 wiper
store cycles and 50 years for wiper data retention.
Digital Interface
The MAX5432–MAX5435 feature an internal, nonvolatile
EEPROM that returns the wiper to its previously stored
position at power-up. The shift register decodes the
control and address bits, routing the data to the proper
memory registers. Write data to the volatile memory
register to immediately update the wiper position, or
write data to the nonvolatile register for storage. Writing
to the nonvolatile register takes a minimum of 12ms.
The volatile register retains data as long as the device
is enabled and powered. Removing power clears the
volatile register. The nonvolatile register retains data
even after power is removed. Upon power-up, the
power-on reset circuitry and internal oscillator control
the transfer of data from the nonvolatile register to the
volatile register.
Serial Addressing
The MAX5432–MAX5435 operate as a slave that sends
and receives data through an I
2
C- and SMBus-com-
patible 2-wire interface. The interface uses a serial data
access (SDA) line and a serial clock line (SCL) to
achieve bidirectional communication between
master(s) and slave(s). A master, typically a microcon-
troller, initiates all data transfers to and from the
MAX5432–MAX5435, and generates the SCL clock that
synchronizes the data transfer (Figure 1).
SDA operates as both an input and an open-drain out-
put. SDA requires a pullup resistor, typically 4.7k
.
SCL only operates as an input. SCL requires a pullup
resistor (4.7k
typ) if there are multiple masters on the
2-wire interface, or if the master in a single-master sys-
tem has an open-drain SCL output.
Each transmission consists of a START (S) condition
(Figure 3) sent by a master, followed by the
MAX5432–MAX5435 7-bit slave address plus the 8th bit
(Figure 4), 1 command byte (Figure 7) and 1 data byte,
and finally a STOP (P) condition (Figure 3).
Start and Stop Conditions
Both SCL and SDA remain high when the interface is
not busy. A master signals the beginning of a transmis-
sion with a START (S) condition by transitioning SDA
from high to low while SCL is high. When the master
has finished communicating with the slave, it issues a
STOP (P) condition by transitioning the SDA from low to
SMBus is a trademark of Intel Corporation.
M
Pin Description
PIN
TDFN
THIN SOT23
NAME
FUNCTION
1
2
3
4
5
6
7
8
—
4
2
3
1
—
6
5
—
H
High Terminal
I
2
C-Compatible Interface Data Input
Ground
I
2
C-Compatible Interface Clock Input
Power-Supply Input. Bypass with a 0.1μF capacitor from V
DD
to GND.
Address Input. Sets the I
2
C address. Connect to V
DD
or GND. Do not leave A0 floating.
Low Terminal
Wiper Terminal
Exposed Pad. Internally connected to GND.
SDA
GND
SCL
V
DD
A0
L
W
EP
EP
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MAX5435LEZT | 256-Tap, Nonvolatile, I2C-Interface, Digital Potentiometers |
| MAX5435LEZT-T | 256-Tap, Nonvolatile, I2C-Interface, Digital Potentiometers |
| MAX5435MEZT | 256-Tap, Nonvolatile, I2C-Interface, Digital Potentiometers |
| MAX5435MEZT-T | 256-Tap, Nonvolatile, I2C-Interface, Digital Potentiometers |
| MAX5436EUB | 256-Tap, Nonvolatile, I2C-Interface, Digital Potentiometers |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX5435LEKT-T | 制造商:Maxim Integrated Products 功能描述:32-TAP, NONVOLATILE, I2C, LINEAR, DIGITAL POT - Tape and Reel |
| MAX5435LEZT | 制造商:Maxim Integrated Products 功能描述:32-TAP NONVOLATILE I2C LINEAR D - Cut Tape Product |
| MAX5435LEZT+ | 制造商:Maxim Integrated Products 功能描述:DGTL POTENTIOMETER 32POS 100KOHM SGL 6PIN TSOT-23 - Rail/Tube |
| MAX5435LEZT+T | 功能描述:數(shù)字電位計 IC 32-Tap Nonvolatile I2C Linear 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 |
| MAX5435LEZT-T | 功能描述:數(shù)字電位計 IC 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)。