Thông số kỹ thuật
| thuộc tính | Giá trị |
| Package / Case | Bulk,Tube |
| Part Status | Obsolete |
| Amplifier Type | J-FET |
| Number of Circuits | 1 |
| Output Type | Rail-to-Rail |
| Slew Rate | 3V/µs |
| Gain Bandwidth Product | 1.8 MHz |
| -3 dB Bandwidth | 1.9 MHz |
| Current - Input Bias | 2 pA |
| Voltage - Input Offset | 400 µV |
| Supply Current | 700µA |
| Current - Output / Channel | 20 mA |
| Voltage - Supply Span(Min) | 5 V |
| Voltage - Supply Span(Max) | 36 V |
| Operating Temperature | -40°C ~ 85°C |
| Mounting Type | Surface Mount |
Tổng quan
Description
The AD820AR is a high-precision, single-supply instrumentation amplifier produced by Analog Devices. It is widely used in applications requiring accurate and stable signal amplification, such as sensor signal processing, medical instrumentation, and data acquisition systems. The device operates with a supply voltage range from 4 V to 36 V, making it versatile for various applications.
The AD820AR features a low offset voltage and low bias current, which ensure minimal error and high fidelity in signal amplification. It offers a high common-mode rejection ratio (CMRR) and excellent noise performance, crucial for maintaining signal integrity in noisy environments. The gain of the amplifier is set by an external resistor, providing flexibility in adjusting the amplification level according to specific needs.
Its compact surface-mount package (SOIC) makes it suitable for space-constrained designs. Additionally, the device is known for its robustness, with operational temperature ranges that suit both consumer and industrial applications. Overall, the AD820AR is favored for its precision, reliability, and adaptability in analog signal processing tasks.
The AD820AR features a low offset voltage and low bias current, which ensure minimal error and high fidelity in signal amplification. It offers a high common-mode rejection ratio (CMRR) and excellent noise performance, crucial for maintaining signal integrity in noisy environments. The gain of the amplifier is set by an external resistor, providing flexibility in adjusting the amplification level according to specific needs.
Its compact surface-mount package (SOIC) makes it suitable for space-constrained designs. Additionally, the device is known for its robustness, with operational temperature ranges that suit both consumer and industrial applications. Overall, the AD820AR is favored for its precision, reliability, and adaptability in analog signal processing tasks.
Equivalent
The AD820AR is a precision, low-power, single-supply operational amplifier. Equivalent products might include:
1. LM358 - A dual op-amp, often used in similar applications.
2. TLV2381 - Single channel, rail-to-rail input/output op-amp.
3. OPA344 - Precision low-power, CMOS op-amp from Texas Instruments.
4. LT1013 - Dual precision op-amp, known for reliability.
These alternatives should be evaluated for specific parameters like voltage range, bandwidth, and power to ensure compatibility.
1. LM358 - A dual op-amp, often used in similar applications.
2. TLV2381 - Single channel, rail-to-rail input/output op-amp.
3. OPA344 - Precision low-power, CMOS op-amp from Texas Instruments.
4. LT1013 - Dual precision op-amp, known for reliability.
These alternatives should be evaluated for specific parameters like voltage range, bandwidth, and power to ensure compatibility.
Features
The AD820AR is a precision, single-supply difference amplifier designed by Analog Devices. Key features include:
1. High Common-Mode Rejection: It offers excellent common-mode rejection ratio (CMRR), which is crucial for accurately extracting small differential signals in the presence of large common-mode voltages.
2. Single-Supply Operation: It operates from a single supply voltage, making it suitable for battery-powered and low-voltage applications.
3. Wide Input Range: The device can handle a wide range of input voltages, enhancing its versatility in various applications.
4. Rail-to-Rail Output: The AD820AR provides rail-to-rail output capability, maximizing the dynamic range and making it compatible with the full range of ADC inputs.
5. Low Offset Voltage: It features low offset voltage and drift, ensuring precision and stability over time and temperature variations.
6. Compact Package: Available in an 8-pin SOIC package, it is compact and easy to integrate into tight spaces on PCBs.
These features make the AD820AR suitable for use in instrumentation, automotive, and industrial applications where precision and reliability are critical.
1. High Common-Mode Rejection: It offers excellent common-mode rejection ratio (CMRR), which is crucial for accurately extracting small differential signals in the presence of large common-mode voltages.
2. Single-Supply Operation: It operates from a single supply voltage, making it suitable for battery-powered and low-voltage applications.
3. Wide Input Range: The device can handle a wide range of input voltages, enhancing its versatility in various applications.
4. Rail-to-Rail Output: The AD820AR provides rail-to-rail output capability, maximizing the dynamic range and making it compatible with the full range of ADC inputs.
5. Low Offset Voltage: It features low offset voltage and drift, ensuring precision and stability over time and temperature variations.
6. Compact Package: Available in an 8-pin SOIC package, it is compact and easy to integrate into tight spaces on PCBs.
These features make the AD820AR suitable for use in instrumentation, automotive, and industrial applications where precision and reliability are critical.
Pinout
The AD820AR is a precision instrumentation amplifier that usually comes in an 8-pin SOIC (Small Outline Integrated Circuit) package. Here's a brief overview of its pin configuration and functions:
1. Pin 1 (Offset Null/V+): Used for offset voltage nulling.
2. Pin 2 (Inverting Input - IN-): Accepts the inverting input signal.
3. Pin 3 (Non-Inverting Input - IN+): Accepts the non-inverting input signal.
4. Pin 4 (V-): Connected to the negative supply voltage.
5. Pin 5 (Offset Null/V-): Used for offset voltage nulling.
6. Pin 6 (Reference - Ref): Provides a reference point for the output voltage.
7. Pin 7 (Output): Outputs the amplified signal.
8. Pin 8 (V+): Connected to the positive supply voltage.
The AD820AR is designed for applications requiring precision amplification of low-level signals, such as in sensor signal processing, data acquisition systems, and medical instrumentation. It offers low input offset voltage and drift, high common-mode rejection ratio (CMRR), and low noise, making it suitable for precision applications.
1. Pin 1 (Offset Null/V+): Used for offset voltage nulling.
2. Pin 2 (Inverting Input - IN-): Accepts the inverting input signal.
3. Pin 3 (Non-Inverting Input - IN+): Accepts the non-inverting input signal.
4. Pin 4 (V-): Connected to the negative supply voltage.
5. Pin 5 (Offset Null/V-): Used for offset voltage nulling.
6. Pin 6 (Reference - Ref): Provides a reference point for the output voltage.
7. Pin 7 (Output): Outputs the amplified signal.
8. Pin 8 (V+): Connected to the positive supply voltage.
The AD820AR is designed for applications requiring precision amplification of low-level signals, such as in sensor signal processing, data acquisition systems, and medical instrumentation. It offers low input offset voltage and drift, high common-mode rejection ratio (CMRR), and low noise, making it suitable for precision applications.
Manufacturer
The AD820AR is manufactured by Analog Devices, Inc. Analog Devices is a multinational semiconductor company that specializes in the design and manufacturing of analog, mixed-signal, and digital signal processing (DSP) integrated circuits. These components are used in a variety of electronic equipment to process real-world phenomena such as light, sound, temperature, motion, and pressure. Analog Devices is known for providing solutions across a wide range of sectors, including industrial, automotive, healthcare, communications, and consumer electronics. The company is recognized for its innovation and leadership in precision and high-performance signal processing.
Application
The AD820AR is an operational amplifier that is commonly used in various applications. Key areas include signal conditioning, such as amplifying sensor outputs in instrumentation systems. It's suitable for use in data acquisition systems, providing precise signal amplification. The AD820AR is also used in medical instruments, audio processing, and active filters. Additionally, it finds applications in control systems and precision rectifiers due to its low noise and high-accuracy performance. Its capability to work in single-supply environments makes it ideal for battery-powered devices. Overall, the AD820AR is versatile for tasks requiring reliable amplification and signal integrity.
Package
The AD820AR is an operational amplifier from Analog Devices, and it is typically available in a Surface-Mount Device (SMD) package type, specifically the SOIC-8 (Small Outline Integrated Circuit with 8 leads) package.