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參數資料
| 型號： | MAX5497 |
| 廠商： | Maxim Integrated Products, Inc. |
| 元件分類： | 通用總線功能 |
| 英文描述： | 256-Tap, Nonvolatile, I2C-Interface, Digital Potentiometers |
| 中文描述： | 四2輸入與門 |
| 文件頁數： | 1/20頁 |
| 文件大小： | 876K |
| 代理商： | MAX5497 |
General Description
The MAX5494–MAX5499 10-bit (1024-tap), dual, non-
volatile, linear-taper, programmable voltage-dividers
and variable resistors perform the function of a
mechanical potentiometer, but replace the mechanics
with a 3-wire SPI-compatible serial interface. The
MAX5494/MAX5495 are dual, 3-terminal, programma-
ble voltage-dividers; the MAX5496/MAX5497 are dual,
2-terminal variable resistors; and the MAX5498/
MAX5499 include one 2-terminal variable resistor and
one 3-terminal programmable voltage-divider.
The MAX5494–MAX5499 feature an internal, nonvolatile,
electrically erasable programmable read-only memory
(EEPROM) that stores the wiper position for initialization
during power-up. The 3-wire SPI-compatible serial inter-
face allows communication at data rates up to 7MHz.
The MAX5494–MAX5499 are ideal for applications requir-
ing digitally controlled potentiometers. End-to-end resis-
tance values of 10k
and 50k
are available with a
35ppm/°C end-to-end temperature coefficient. The ratio-
metric temperature coefficient is 5ppm/°C for each chan-
nel, making these devices ideal for applications requiring
low-temperature-coefficient programmable voltage-
dividers such as low-drift, programmable-gain amplifiers.
The MAX5494–MAX5499 operate with either a single
power supply (+2.7V to +5.25V) or dual power supplies
(±2.5V). The devices consume 400μA (max) of supply
current when writing data to the nonvolatile memory
and 1.5μA (max) of standby supply current. The
devices are available in space-saving (5mm x 5mm x
0.8mm), 16-pin TQFN package and are specified over
the extended (-40°C to +85°C) temperature range.
Applications
Gain and Offset Adjustment
LCD Contrast Adjustment
Pressure Sensors
Low-Drift Programmable-Gain Amplifiers
Mechanical Potentiometer Replacement
Volume Control
Ordering Information
Features
Wiper Position Stored in Nonvolatile Memory and
Recalled Upon Power-Up
16-Pin, 5mm x 5mm x 0.8mm TQFN Package
35ppm/°C End-to-End Resistance Temperature
Coefficient
5ppm/°C Ratiometric Temperature Coefficient
10k
and 50k
End-to-End Resistor Values
3-Wire SPI-Compatible Serial Interface
Reliability (T
A
= +85°C)
50,000 Wiper Store Cycles
50 Years Wiper Data Retention
1.5μA (max) Standby Current
Single +2.7V to +5.25V Supply Operation
Dual ±2.5V Supply Operation
Pin Configurations
M
10-Bit, Dual, Nonvolatile, Linear-Taper
Digital Potentiometers
________________________________________________________________
Maxim Integrated Products
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
1
16
1
2
3
4
12
11
10
9
15
14
13
5
6
7
8
SCLK
N.C.
N.C.
DIN
G
I
W
L
H
W
L
H
V
DD
N.C.
N.C.
V
SS
TOP VIEW
MAX5494
MAX5495
C
5mm
×
5mm
×
0.8mm TQFN
16
1
2
3
4
12
11
10
9
15
14
13
5
6
7
8
SCLK
N.C.
N.C.
DIN
G
I
W
L
D
W
L
D
V
DD
N.C.
N.C.
V
SS
MAX5496
MAX5497
C
5mm
×
5mm
×
0.8mm TQFN
PART
TEMP RANGE
PIN-
PACKAGE
PKG CODE
MAX5494
ETE
MAX5495
ETE
*
EP = Exposed pad.
Ordering Information continued at end of data sheet.
Selector Guide appears at end of data sheet.
SPI is a trademark of Motorola, Inc.
-40°C to +85°C
-40°C to +85°C
16 TQFN-EP*
16 TQFN-EP*
T1655-2
T1655-2
19-3562; Rev 1; 6/05
Pin Configurations continued at end of data sheet.
相關PDF資料 |
PDF描述 |
|---|---|
| MAX5497ETE | 256-Tap, Nonvolatile, I2C-Interface, Digital Potentiometers |
| MAX5498 | 256-Tap, Nonvolatile, I2C-Interface, Digital Potentiometers |
| MAX5498ETE | 256-Tap, Nonvolatile, I2C-Interface, Digital Potentiometers |
| MAX5499 | 256-Tap, Nonvolatile, I2C-Interface, Digital Potentiometers |
| MAX5499ETE | 256-Tap, Nonvolatile, I2C-Interface, Digital Potentiometers |
相關代理商/技術參數 |
參數描述 |
|---|---|
| MAX5497ETE | 功能描述:數字電位計 IC RoHS:否 制造商:Maxim Integrated 電阻:200 Ohms 溫度系數:35 PPM / C 容差:25 % POT 數量:Dual 每 POT 分接頭:256 弧刷存儲器:Volatile 緩沖刷: 數字接口: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 安裝風格:SMD/SMT 封裝 / 箱體:TQFN-16 封裝:Reel |
| MAX5497ETE+ | 功能描述:數字電位計 IC 10-Bit Dual NV Linear-Taper RoHS:否 制造商:Maxim Integrated 電阻:200 Ohms 溫度系數:35 PPM / C 容差:25 % POT 數量:Dual 每 POT 分接頭:256 弧刷存儲器:Volatile 緩沖刷: 數字接口: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 安裝風格:SMD/SMT 封裝 / 箱體:TQFN-16 封裝:Reel |
| MAX5497ETE+T | 功能描述:數字電位計 IC 10-Bit Dual NV Linear-Taper RoHS:否 制造商:Maxim Integrated 電阻:200 Ohms 溫度系數:35 PPM / C 容差:25 % POT 數量:Dual 每 POT 分接頭:256 弧刷存儲器:Volatile 緩沖刷: 數字接口: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 安裝風格:SMD/SMT 封裝 / 箱體:TQFN-16 封裝:Reel |
| MAX5497ETE-T | 功能描述:數字電位計 IC RoHS:否 制造商:Maxim Integrated 電阻:200 Ohms 溫度系數:35 PPM / C 容差:25 % POT 數量:Dual 每 POT 分接頭:256 弧刷存儲器:Volatile 緩沖刷: 數字接口: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 安裝風格:SMD/SMT 封裝 / 箱體:TQFN-16 封裝:Reel |
| MAX5498ETE | 功能描述:數字電位計 IC RoHS:否 制造商:Maxim Integrated 電阻:200 Ohms 溫度系數:35 PPM / C 容差:25 % POT 數量:Dual 每 POT 分接頭:256 弧刷存儲器:Volatile 緩沖刷: 數字接口: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 安裝風格:SMD/SMT 封裝 / 箱體:TQFN-16 封裝:Reel |
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