max5491rc02500t Maxim Integrated Products, Inc., max5491rc02500t Datasheet

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max5491rc02500t

Manufacturer Part Number
max5491rc02500t
Description
Max5491 Precision-matched Resistor-divider In Sot23
Manufacturer
Maxim Integrated Products, Inc.
Datasheet
1.MAX5491RC02500T.pdf (7 pages)
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 30kΩ. 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.
19-3009; Rev 3; 12/04
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.
Industrial Process Control
Instrumentation
Precision Gain Setting
Medical Equipment
Automatic Test Equipment
Base Stations
Precision-Matched Resistor-Divider in SOT23
P1
P2
________________________________________________________________ Maxim Integrated Products
General Description
MAX5491
R
R
2
1
Block Diagram
Applications
P3
♦ Resistance Ratios from 1:1 to 30:1
♦ Custom Ratios Available Upon Request
♦ ±2kV Human Body Model ESD Protection
♦ Tight Initial Ratio Accuracy
♦ Low 2ppm/°C Resistor-Ratio-Drift
♦ Up to 50V Operating Voltage Across Sum of R1
♦ Tiny 3-Pin SOT23 Package
*See the How to Order section for more details.
MAX5491
MAX5491
MAX5491
and R2
0.035% (MAX5491A)
0.05% (MAX5491B)
0.1% (MAX5491C)
TOP VIEW
PA R T
_
_
_
A
B
C
_ _ _ _ _
_ _ _ _ _
_ _ _ _ _
-T -40°C to +85°C 3 SOT23-3
-T -40°C to +85°C 3 SOT23-3
-T -40°C to +85°C 3 SOT23-3
P1
P2
Ordering Information*
1
2
R A N G E
T EM P
MAX5491
SOT23
Pin Configuration
PIN -
PA C K A G E
3
P3
Features
AC CUR ACY
RA TIO
0.035
0.05
(%)
0.1
1

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max5491rc02500t Summary of contents

Page 1

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), ...

Page 2

Precision-Matched Resistor-Divider in SOT23 ABSOLUTE MAXIMUM RATINGS Voltage Between P1 and P2...................................................50V Continuous Current into Any Pin....................................±1.75mA Continuous Power Dissipation (T = +70°C) A 3-Pin SOT23 (derate 7.1mW/°C above +70°C).........571.4mW Stresses beyond those listed under “Absolute Maximum Ratings” may cause ...

Page 3

Precision-Matched Resistor-Divider in SOT23 (V = 10V +25°C, unless otherwise noted.) P1-P2 A NORMALIZED RESISTOR-RATIO DRIFT vs. TEMPERATURE 400 V 300 RATIO = 1:1 200 100 0 -100 -200 -300 -400 -50 - TEMPERATURE (°C) ...

Page 4

Precision-Matched Resistor-Divider in SOT23 P3 MAX5491 Figure 1. Inverting Amplifier Configuration Figure 3. Buffered Attenuator Applications Information Self-Heating and Error Applying a voltage across terminals P1 ...

Page 5

Precision-Matched Resistor-Divider in SOT23 PREFIX ROOT PART NUMBER MAX5491 = 30kΩ End-to-End RATIO RANGE L through W. Resistor ratio must fall in the appropriate ratio range. (See Table 2.) RATIO ACCURACY A = 0.035% (max 0.05% (max); C ...

Page 6

Precision-Matched Resistor-Divider in SOT23 Table 1. Standard Ratios* (continued) PART RESISTOR RATIO MAX5491RB02500-T 2.5:1 MAX5491RC02500-T 2.5:1 MAX5491SA03200-T 3.2:1 MAX5491SB03200-T 3.2:1 MAX5491SC03200-T 3.2:1 MAX5491TA05000-T 5:1 MAX5491TB05000-T 5:1 MAX5491TC05000-T 5:1 MAX5491UA07538-T 7.538:1 MAX5491UB07538-T 7.538:1 MAX5491UC07538-T 7.538:1 MAX5491VA10000-T 10:1 MAX5491VB10000-T 10:1 MAX5491VC10000-T 10:1 ...

Page 7

Precision-Matched Resistor-Divider in SOT23 (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information www.maxim-ic.com/packages.) Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely ...

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