INA826SIDRCT datasheet(29/41 Pages) TI2

Part #	INA826SIDRCT

Description	INA826S Precision, 200-μA Supply Current, 3-V to 36-V Supply Instrumentation Amplifier With Rail-to-Rail Output and Shutdown

PDF	41 Pages

Scroll/Zoom	100%

Manufacturer	TI2 [Texas Instruments]

Direct Link	https://www.ti.com

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29 / 41 page

Input Voltage (V)

-10

-5

D071

Input Current (A)

-0.02

-0.01

0.01

0.02

D070

49.4 kW

49.4 k

INA826

= 1 +

INA826

= 10.4 kW

49.4 k

5.75

OUT

REF

G =

= 5.75

4.8 V

2.5 V

400 mV

INA826S

www.ti.com

SBOS770A – MAY 2017 – REVISED JUNE 2017

Product Folder Links: INA826S

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Typical Application (continued)

The value obtained from Equation 4 is not a standard 0.1% value, so 4.12 kΩ is selected. R1 and R2 also use

0.1% tolerance resistors to minimize error.

Use Equation 5 to calculate the ideal gain of the instrumentation amplifier.

(5)

Equation 6 calculates the gain-setting resistor value using the INA826S gain equation, Equation 1.

(6)

10.4 kΩ is a standard 0.1% resistor value that can be used in this design. Finally, the output RC filter

components are selected to have a –3-dB cutoff frequency of 1 MHz.

8.2.3 Application Curves

Figure 75 and Figure 76 show typical characteristic curves for Figure 74.

Figure 75. PLC Output Voltage vs Input Voltage

Figure 76. PLC Output Voltage vs Input Current

INA826SIDRCT Datasheet(PDF) 29 Page - Texas Instruments

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