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See Technical Specifications

INA821IDR +BOM

High bandwidth, low noise

Manufacturer:

Texas Instruments, Inc
Mfr.Part #:

INA821IDR
Datasheet:

INA821IDR Datasheet (PDF)
Amplifier Type:

Instrumentation
Number Of Circuits:

1
Slew Rate:

2V/µs
-3db Bandwidth:

4.7 MHz
EDA/CAD Models:

Request Free CAD Models for INA821IDR

Description

The Texas Instruments INA821IDR is a single-supply operational amplifier (op-amp) designed for precision voltage measurement, current sensing, power management, and motor control applications. It features low offset voltage, gain drift, and noise, making it suitable for industrial and automotive applications. The op-amp has a stable performance with 1-nF capacitive loads and is protected against input voltages up to ±40 V. The INA821IDR operates over a wide supply range of 4.5 V to 36 V (single-supply) or ±2.25 V to ±18 V (dual-supply), making it suitable for various applications. It also features a high common-mode rejection ratio and power supply rejection ratio, ensuring accurate measurements. The op-amp is available in three packages: SOIC-8, VSSOP, and WSON. Its specified temperature range is -40°C to +125°C, making it suitable for use in a wide range of environments.

Features

According to the product information, the features of the INA821IDR are:

Low offset voltage: 10 µV (typ), 35 µV (max)
Gain drift: 5 ppm/°C (G = 1), < 35 ppm/°C (G > 1) (max)
Noise: 7 nV/√Hz
Bandwidth: 4.7 MHz (G = 1), 290 kHz (G = 100)
Stable with 1-nF capacitive loads
Inputs protected up to ±40 V
Common-mode rejection: 112 dB, G = 10 (min)
Power supply rejection: 110 dB, G = 1 (min)
Supply current: 650 µA (max)
Supply range: single-supply 4.5 V to 36 V, dual-supply ±2.25 V to ±18 V

These features make the INA821IDR suitable for various applications including industrial and automotive use cases, telecommunications equipment, medical devices, and consumer electronics.

Package

The package type of INA821IDR is SOIC-8 (Surface Mount Device, 8-pin). Additionally, it's also available in VSSOP and WSON packages.

Pinout

The INA821IDR has an 8-pin SOIC package. The pin functions are:

Pin 1: VCC (positive supply voltage)
Pin 2: OUT (output signal)
Pin 3: IN- (negative input signal)
Pin 4: IN+ (positive input signal)
Pin 5: GND (ground)
Pin 6: NC (no connect)
Pin 7: VSS (negative supply voltage)
Pin 8: COMP (compensation pin)

This device is an operational amplifier designed for precision current sensing and monitoring applications.

Manufacturer

The manufacturer of the INA821IDR is Texas Instruments (TI). TI is a well-established globally recognized leader in the semiconductor industry, specializing in analog and embedded processing technologies.

Applications

The INA821IDR is commonly used in industrial and automotive applications for current sensing and monitoring, precision voltage measurement, power management, and motor control. Additionally, it can also be applied to telecommunications equipment, medical devices, and consumer electronics for accurate current sensing and measurement.

Equivalent

The equivalent products of INA821IDR are:

OP07 series (Texas Instruments)
LM833 series (National Semiconductor)
AD8461/AD8462 (Analog Devices)

These amplifiers offer similar characteristics, such as low offset voltage, high gain, and wide bandwidth, making them suitable for applications like current sensing, precision voltage measurement, and power management.

Specifications

Category	Integrated Circuits (ICs)LinearAmplifiersInstrumentation, OP Amps, Buffer Amps	Series	-
Amplifier Type	Instrumentation	Number of Circuits	1
Output Type	-	Slew Rate	2V/µs
-3db Bandwidth	4.7 MHz	Current - Input Bias	150 pA
Voltage - Input Offset	10 µV	Current - Supply	600µA
Current - Output / Channel	20 mA	Voltage - Supply Span (Min)	4.5 V
Voltage - Supply Span (Max)	36 V	Operating Temperature	-40°C ~ 125°C (TA)
Mounting Type	Surface Mount	Base Product Number	INA821
Number of channels	1	Vs (max) (V)	36
Vs (min) (V)	4.5	Input offset (±) (max) (µV)	35
Voltage gain (min) (V/V)	1	Voltage gain (max) (V/V)	10000
Noise at 1 kHz (typ) (nV√Hz)	7	Features	Overvoltage protection, Small Size, Super-beta
CMRR (min) (dB)	136	Input offset drift (±) (max) (V/°C)	0.0000004
Input bias current (±) (max) (nA)	0.5	Iq (typ) (mA)	0.6
Bandwidth at min gain (typ) (MHz)	4.7	Gain error (±) (max) (%)	0.15
Operating temperature range (°C)	-40 to 125	Rating	Catalog
Type	Resistor	Gain nonlinearity (±) (max) (%)	0.0015
Output swing headroom (to negative supply) (typ) (V)	0.15	Output swing headroom (to positive supply) (typ) (V)	-0.15
Input common mode headroom (to negative supply) (typ) (V)	2	Input common mode headroom (to positive supply) (typ) (V)	-2
Noise at 0.1 Hz to 10 Hz (typ) (µVPP)	0.14	Pin Count	8
Released Date	Jan 16, 2020	Last Modified Date	Mar 7, 2023 4:10 PM UTC
Package/Case	SOP8

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Ratings and Reviews

A**n 10/30/2022

Very not fast but everything came. Delivery to 63 regions almost a month. i recommend

Z**e 01/17/2022

For these pennies all super

M**i 11/27/2021

Full compliance with description and image. Went, or rather crawled, two weeks.

B**n 10/01/2020

Fast shipping and shipping. Everything works. Thank you!Lead acid, namely calcium batteries should not discharge less than to 11.8 v, otherwise they begin to lose their capacity. Usually inverters allow you to discharge the battery to 10 v which is very good (and good for manufacturers). To disconnect the load, you need to buy the relay at 220 v and connect this relay at the output of the inverter (load in the house). So the inverter will be able to charge the batteries after turning off the load and turning on the gasoline generator.