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參數(shù)資料
| 型號： | MAX5431CEUB+ |
| 廠商： | Maxim Integrated Products |
| 文件頁數(shù)： | 5/7頁 |
| 文件大小： | 0K |
| 描述： | IC VOLTAGE DIVIDER PGA 10-UMAX |
| 產品培訓模塊： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 標準包裝： | 50 |
| 接片： | 4 |
| 電阻（歐姆）： | 57k |
| 電路數(shù)： | 1 |
| 存儲器類型： | 易失 |
| 接口： | 2 輸入并口 |
| 電源電壓： | 12 V ~ 15 V，±12 V ~ 15 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） |
| 供應商設備封裝： | 10-µMAX |
| 包裝： | 管件 |
MAX5430/MAX5431
±15V Digitally Programmable
Precision Voltage-Dividers for PGAs
_______________________________________________________________________________________
5
Pin Description
PIN
MAX5431
MAX5430
NAME
FUNCTION
18
VDD
Positive Power Supply
2—
MATCH_H
Matching Resistor High Terminal
37
GND
Ground
46
H
High Terminal of Resistive-Divider
55
L
Low Terminal of Resistive-Divider
6—
MATCH_L
Matching Resistor Low Terminal
74
VSS
Negative Power Supply
83
W
Wiper Terminal of Resistive-Divider
92
D1
Second Bit Digital Input (MSB) (Table 1)
10
1
D0
First Bit Digital Input (LSB) (Table 1)
Detailed Description
The MAX5430/MAX5431 are digitally programmable pre-
cision resistor arrays. These devices have fixed resistor-
dividers with digitally controlled contacts, providing four
precision noninverting gains of 1, 2, 4, and 8 for PGA
applications (see Functional Diagram and Figure 1). The
MAX5430/MAX5431 achieve ratio accuracies of 0.025%
(MAX5430A/MAX5431A), 0.09% (MAX5430B/MAX5431B),
or 0.5% (MAX5430C/MAX5431C).
The end-to-end resistance from H to L is 57k
. The
impedance seen at W is designed to be the same 14k
for gain settings 2, 4, and 8, ensuring excellent op amp
input-resistance balance, regardless of gain setting. In
a gain of 1 configuration, H is internally connected to W
with a typical resistance of 500
.
Matching Resistor (MAX5431)
The MAX5431 includes a matching resistor to compen-
sate the offset voltage due to the input bias current of
the op amp. The resistance from MATCH_H to
MATCH_L is a fixed matching resistor, equal to the
resistance seen at W for gains of 2, 4, and 8. In the
gain of 1, an internal switch short circuits MATCH_H
and MATCH_L. This internal switch matches the imped-
ance of the switch between H and W.
Figure 1. Simplified Functional Diagram
4R
2R
RATIO = 2
RATIO = 1
R
L
W
H
RATIO = 4
RATIO = 8
R
DIGITAL INPUTS
D1
D0
GAIN
00
1
01
2
10
4
11
8
Table 1. Logic-Control Truth Table
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| MAX5431CEUB+ | 功能描述:數(shù)字電位計 IC Precision Voltage Divider for PGAs 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 安裝風格:SMD/SMT 封裝 / 箱體:TQFN-16 封裝:Reel |
| MAX5431CEUB+T | 功能描述:數(shù)字電位計 IC Precision Voltage Divider for PGAs 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 安裝風格:SMD/SMT 封裝 / 箱體:TQFN-16 封裝:Reel |
| MAX5431CEUB-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 安裝風格:SMD/SMT 封裝 / 箱體:TQFN-16 封裝:Reel |
| MAX5432EVKIT+ | 功能描述:其他開發(fā)工具 MAX5432/33 Eval Kit RoHS:否 制造商:Parallax 產品:ELEV-8 Hex Upgrade Kits 類型:Robotics 工具用于評估:ELEV-8 Quadcopter 工作電源電壓: |
| MAX5432LETA | 制造商:Maxim Integrated Products 功能描述:32-TAP NONVOLATILE I2C LINEAR D - Rail/Tube |
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