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19-3009; Rev 3; 12/04
Precision-Matched Resistor-Divider in SOT23
General Description
The MAX5491 precision resistor-divider consists of two
accurately matched resistors with access to the ends
and center of the divider. This device offers excellent
resistance matching of 0.035% (A grade), 0.05% (B
grade), and 0.1% (C grade). The MAX5491 includes an
extremely low resistance-ratio temperature drift of
2ppm/°C over -40°C to +85°C, and has an end-to-end
resistance of 30k ? . Resistance ratios from 1:1 to 30:1 are
available. Ten standard ratios are available (see Table
1), and custom ratios are also available upon request. To
enhance device and system robustness, the MAX5491
also features ±2kV Human Body Model electrostatic dis-
charge (ESD) protection to ensure against real-world
ESD events. The MAX5491 is ideal for precision gain-set-
ting applications where tight resistance matching and
low temperature drift are necessary.
The MAX5491 is available in a space-saving 3-pin
SOT23 package, and is guaranteed over the extended
-40°C to +85°C temperature range.
Applications
Features
? Resistance Ratios from 1:1 to 30:1
? Custom Ratios Available Upon Request
? ±2kV Human Body Model ESD Protection
? Tight Initial Ratio Accuracy
0.035% (MAX5491A)
0.05% (MAX5491B)
0.1% (MAX5491C)
? Low 2ppm/ ° C Resistor-Ratio-Drift
? Up to 50V Operating Voltage Across Sum of R1
and R2
? Tiny 3-Pin SOT23 Package
Ordering Information*
Industrial Process Control
Instrumentation
Precision Gain Setting
PART
TEMP
RANGE
PIN-
PACKAGE
RATIO
ACCURACY
(%)
Medical Equipment
Automatic Test Equipment
Base Stations
MAX5491 _ A _ _ _ _ _ -T -40°C to +85°C 3 SOT23-3
MAX5491 _ B _ _ _ _ _ -T -40°C to +85°C 3 SOT23-3
MAX5491 _ C _ _ _ _ _ -T -40°C to +85°C 3 SOT23-3
* See the How to Order section for more details.
0.035
0.05
0.1
Block Diagram
TOP VIEW
Pin Configuration
P1
MAX5491
R 1
P1
1
P2
R 2
P3
P2 2
MAX5491
SOT23
3
P3
________________________________________________________________ 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
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MAX5491NB01500 制造商:Maxim Integrated Products 功能描述:PRECISION-MATCHED RESISTOR-DIVIDER - Cut Tape Product
MAX5491NB01500+ 制造商:Maxim Integrated Products 功能描述:DGTL POTENTIOMETER 30KOHM 3PIN SOT-23 - Rail/Tube
MAX5491NB01500+T 功能描述:电阻器网络与阵列 Precision Match Res/Divider RoHS:否 制造商:Vishay/Thin Film 产品类型:Networks 电路类型:Divider 电阻器数量: 电阻数值:10 kOhms 容差:0.1 % 温度系数: 管脚数量:3 工作温度范围:- 55 C to + 155 C 尺寸:1.02 mm W x 3.05 mm L x 1.4 mm H 引线间隔: 端接类型:SMD/SMT 封装:Reel
MAX5491NB01500-T 功能描述:电阻器网络与阵列 RoHS:否 制造商:Vishay/Thin Film 产品类型:Networks 电路类型:Divider 电阻器数量: 电阻数值:10 kOhms 容差:0.1 % 温度系数: 管脚数量:3 工作温度范围:- 55 C to + 155 C 尺寸:1.02 mm W x 3.05 mm L x 1.4 mm H 引线间隔: 端接类型:SMD/SMT 封装:Reel
MAX5491NC01500 制造商:Maxim Integrated Products 功能描述:PRECISION-MATCHED RESISTOR-DIVIDER - Rail/Tube
MAX5491NC01500+ 制造商:Maxim Integrated Products 功能描述:DGTL POTENTIOMETER 30KOHM 3PIN SOT-23 - Cut Tape Product
MAX5491NC01500+T 功能描述:电阻器网络与阵列 Precision Match Res/Divider RoHS:否 制造商:Vishay/Thin Film 产品类型:Networks 电路类型:Divider 电阻器数量: 电阻数值:10 kOhms 容差:0.1 % 温度系数: 管脚数量:3 工作温度范围:- 55 C to + 155 C 尺寸:1.02 mm W x 3.05 mm L x 1.4 mm H 引线间隔: 端接类型:SMD/SMT 封装:Reel