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| 型号： | MAX5427ETA+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 6/10页 |
| 文件大小： | 0K |
| 描述： | IC POT DGTL 1TIME PROGR 8-TDFN |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 接片： | 32 |
| 电阻（欧姆）： | 100k |
| 电路数： | 1 |
| 温度系数： | 标准值 35 ppm/°C |
| 存储器类型： | 非易失 |
| 接口： | I²C（芯片选择，增/减） |
| 电源电压： | 2.7 V ~ 5.5 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-WDFN 裸露焊盘 |
| 供应商设备封装： | 8-TDFN-EP（3x3） |
| 包装： | 带卷 (TR) |
Detailed Description
The MAX5427/MAX5428/MAX5429 are 100k
/50k/
10k
(end-to-end resistance) digitally controlled poten-
tiometers. They have 32 tap positions that are accessible
to the wiper along the resistor array between H and L.
The wiper (W) position is adjusted sequentially through
the tap positions using a simple 2-wire interface. These
digital potentiometers have an optional one-time pro-
grammable feature that sets the POR position of the
wiper. The 2-wire interface can then be disabled, perma-
nently preventing unwanted adjustment.
Digital Interface Operation
The MAX5427/MAX5428/MAX5429 have two modes of
operation when the serial interface is active: increment
mode and decrement mode. The serial interface is only
active when
CS is low.
The
CS and U/D inputs control the position of the wiper
along the resistor array. When
CS transitions from high
to low, the part goes into increment mode if U/
D is high
(Figure 2), and into decrement mode if U/
D is low
(Figure 3). Once the mode is set, the device remains in
that mode until
CS goes high. A low-to-high transition at
the U/
D increments or decrements the wiper position
depending on the current mode.
When the
CS input transitions to high (when serial inter-
face is inactive) and U/
D is low, the wiper increments or
decrements one position in accordance with the state
of U/
D when CS went low. If U/D is high when CS tran-
sitions to high, the wiper remains in the same position.
MAX5427/MAX5428/MAX5429
One-Time Programmable, Linear-Taper
Digital Potentiometers
_______________________________________________________________________________________
5
Pin Description
Typical Operating Characteristics (continued)
(VDD = 5.0V, TA = +25°C, unless otherwise noted.)
R-INL ERROR vs. INPUT CODE
(MAX5428)
MAX5427-29
toc10
INPUT CODE (DECIMAL)
R-INL
(LSB)
25
20
15
10
5
-0.08
-0.06
-0.04
-0.02
0
0.02
0.04
0.06
0.08
0.10
-0.10
030
R-DNL ERROR vs. INPUT CODE
(MAX5429)
MAX5427-29
toc11
INPUT CODE (DECIMAL)
R-DNL
(LSB)
25
20
15
10
5
-0.020
-0.015
-0.010
-0.005
0
0.005
0.010
0.015
0.020
0.025
-0.025
030
R-INL ERROR vs. INPUT CODE
(MAX5429)
MAX5427-29
toc12
INPUT CODE (DECIMAL)
R-INL
(LSB)
25
20
15
10
5
-0.08
-0.06
-0.04
-0.02
0
0.02
0.04
0.06
0.08
0.10
-0.10
030
PIN
NAME
FUNCTION
1
W
Wiper Connection
2
CS
Chip-Select Input. A high-to-low
CS transition determines the mode: increment if U/D is high, or
decrement if U/
D is low. CS is also used for one-time programming (see the One-Time Programming
section).
3VDD
Power-Supply Voltage
4
GND
Ground
5VPP
Programming Voltage for One-Time Programming. Connect VPP to 10V supply when one-time
programming the device. For normal operation, connect to ground or let float.
6U/
D
Up/
Down Control Input. With CS low, a low-to-high transition increments or decrements the wiper
position.
7
L
Low Terminal of Resistor
8
H
High Terminal of Resistor
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX5427EUA | 功能描述:数字电位计 IC RoHS:否 制造商:Maxim Integrated 电阻:200 Ohms 温度系数:35 PPM / C 容差:25 % POT 数量:Dual 每 POT 分接头:256 弧刷存储器:Volatile 缓冲刷: 数字接口:Serial (3-Wire, SPI) 描述/功能:Dual Volatile Low Voltage Linear Taper Digital Potentiometer 工作电源电压:1.7 V to 5.5 V 电源电流:27 uA 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:TQFN-16 封装:Reel |
| MAX5427EUA+ | 功能描述:数字电位计 IC 32-Tap One-Time Programmable RoHS:否 制造商:Maxim Integrated 电阻:200 Ohms 温度系数:35 PPM / C 容差:25 % POT 数量:Dual 每 POT 分接头:256 弧刷存储器:Volatile 缓冲刷: 数字接口:Serial (3-Wire, SPI) 描述/功能:Dual Volatile Low Voltage Linear Taper Digital Potentiometer 工作电源电压:1.7 V to 5.5 V 电源电流:27 uA 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:TQFN-16 封装:Reel |
| MAX5427EUA+T | 功能描述:数字电位计 IC 32-Tap One-Time Programmable RoHS:否 制造商:Maxim Integrated 电阻:200 Ohms 温度系数:35 PPM / C 容差:25 % POT 数量:Dual 每 POT 分接头:256 弧刷存储器:Volatile 缓冲刷: 数字接口:Serial (3-Wire, SPI) 描述/功能:Dual Volatile Low Voltage Linear Taper Digital Potentiometer 工作电源电压:1.7 V to 5.5 V 电源电流:27 uA 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:TQFN-16 封装:Reel |
| MAX5427EUA-T | 功能描述:数字电位计 IC RoHS:否 制造商:Maxim Integrated 电阻:200 Ohms 温度系数:35 PPM / C 容差:25 % POT 数量:Dual 每 POT 分接头:256 弧刷存储器:Volatile 缓冲刷: 数字接口:Serial (3-Wire, SPI) 描述/功能:Dual Volatile Low Voltage Linear Taper Digital Potentiometer 工作电源电压:1.7 V to 5.5 V 电源电流:27 uA 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:TQFN-16 封装:Reel |
| MAX5427EVKIT | 功能描述:数字电位计 IC Evaluation Kit for the MAX5427 MAX5428 MAX5429 RoHS:否 制造商:Maxim Integrated 电阻:200 Ohms 温度系数:35 PPM / C 容差:25 % POT 数量:Dual 每 POT 分接头:256 弧刷存储器:Volatile 缓冲刷: 数字接口:Serial (3-Wire, SPI) 描述/功能:Dual Volatile Low Voltage Linear Taper Digital Potentiometer 工作电源电压:1.7 V to 5.5 V 电源电流:27 uA 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:TQFN-16 封装:Reel |
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