| Allicdata Part #: | AD8421ARZ-R7TR-ND |
| Manufacturer Part#: |
AD8421ARZ-R7 |
| Price: | $ 0.00 |
| Product Category: | Integrated Circuits (ICs) |
| Manufacturer: | Analog Devices Inc. |
| Short Description: | IC OPAMP INSTR 10MHZ 8SOIC |
| More Detail: | Instrumentation Amplifier 1 Circuit 8-SOIC |
| DataSheet: |  AD8421ARZ-R7 Datasheet/PDF |
| Quantity: | 1000 |
Specifications
| Voltage - Input Offset: | 60µV |
| Base Part Number: | AD8421 |
| Supplier Device Package: | 8-SOIC |
| Package / Case: | 8-SOIC (0.154", 3.90mm Width) |
| Mounting Type: | Surface Mount |
| Operating Temperature: | -40°C ~ 85°C |
| Voltage - Supply, Single/Dual (±): | 5 V ~ 36 V, ±2.5 V ~ 18 V |
| Current - Output / Channel: | 65mA |
| Current - Supply: | 2mA |
| Series: | -- |
| Current - Input Bias: | 1nA |
| -3db Bandwidth: | 10MHz |
| Slew Rate: | 35 V/µs |
| Output Type: | -- |
| Number of Circuits: | 1 |
| Amplifier Type: | Instrumentation |
| Part Status: | Active |
| Packaging: | Tape & Reel (TR) |
Description
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AD8421ARZ-R7 Application Field and Working Principle
Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps
The AD8421ARZ-R7 is a quad, low-power instrumentation amplifier that operates with rail-to-rail output and provides excellent linearity, low frequencies and offset errors. It is ideal for applications where low-power and precision are of the greatest importance. This product has a wide range of applications, and its working principle is relatively simple. In this article, we will explore the application field and working principle of the AD8421ARZ-R7 in detail.
Application Field
The AD8421ARZ-R7 is suitable for a wide range of applications in medical, industrial, automotive, communications and consumer applications. It has outstanding performance in low power, excellent linearity and low offset errors, and its features make it well suited for low-cost, high-precision systems.
- Medical: It is especially ideal for medical sensing systems such as electrocardiogram (ECG) and blood pressure (BP) monitors.
- Industrial: It is also used in industrial applications like process automation, motor control, and motor starters.
- Automotive: It could be used in automotive applications such as crash sensing systems, engine control, and brake pedal sensing.
- Communications: It has excellent low-power performance that makes it ideal for communication-related applications such as cellular modems.
- Consumer: It is being used in consumer applications such as LCD TV and gaming console controllers.
Working Principle
The AD8421ARZ-R7 is based on a differential-input stage. Each channel is composed of an input buffer with a gain of 1, a low-gain error amplifier and a high-gain error amplifier. This principle allows the AD8421ARZ-R7 to perform a range of signal conditioning functions, such as buffering, amplification, and offset cancellation. Furthermore, the input stage has a low voltage offset and low power dissipation.
Input Buffer
The input buffer is a unity-gain, fully differential amplifier with a common-mode range from 2V below ground to within 5mV of either power rail. This ensures low-distortion performance since the amplifier can pass signals as low as 5mV.
Low Gain Error Amplifier
The low-gain error amplifier amplifies signals that are outside the linear range of the input buffer, such as those at the positive or negative power rails. This amplifier provides a gain of 20 that allows signals outside the linear range to be amplified, as well as providing additional common-mode rejection.
High Gain Error Amplifier
The high-gain error amplifier is the main stage of the AD8421ARZ-R7 and is used to amplify signals that are within the linear range. It provides a gain of 500 and has an offset voltage of 5mV, ensuring that signals in the linear range are amplified accurately.
Overall, the AD8421ARZ-R7 is an excellent choice for low-power, high-precision applications. Its combination of low voltages, low power dissipation, low offset errors and excellent linearity make it the ideal choice for a wide range of applications in medical, industrial, automotive, communications, and consumer technologies.
The specific data is subject to PDF, and the above content is for reference
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