Overview
The AD622ANZ, produced by Analog Devices Inc., is a low-cost, moderately accurate instrumentation amplifier. It is designed to replace discrete, two or three op-amp instrumentation amplifier designs, offering superior performance, reliability, and board area efficiency. The AD622ANZ features a traditional pin configuration and requires only one external resistor to set any gain between 2 and 1000. For a gain of 1, no external resistor is necessary. This amplifier provides good common-mode rejection, superior linearity, and temperature stability, making it a versatile solution for various applications.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Gain Range | 1 | - | 1000 | - |
| Gain Error (G = 1) | - | 0.15% | - | % |
| Input Offset Voltage | - | - | 125 μV | μV |
| Input Offset Drift | - | - | 1.0 μV/°C | μV/°C |
| Input Bias Current | - | - | 5 nA | nA |
| Common-Mode Rejection Ratio (G = 1) | 66 dB | - | - | dB |
| Bandwidth (G = 10) | - | - | 800 kHz | kHz |
| Slew Rate | - | - | 1.2 V/μs | V/μs |
| Supply Voltage Range | ±2.6 V | - | ±15 V | V |
| Maximum Supply Current | - | - | 1.5 mA | mA |
Key Features
- Easy to use with a traditional pin configuration.
- Low-cost solution with higher performance than two or three op-amp designs.
- Unity gain achievable without an external resistor; optional gains with one external resistor (range: 2 to 1000).
- Wide power supply range: ±2.6 V to ±15 V.
- Available in 8-lead PDIP and 8-lead SOIC_N packages.
- Low power consumption with a maximum supply current of 1.5 mA.
- Superior linearity and common-mode rejection due to precision laser-trimmed resistors.
- High temperature stability and reliability.
Applications
- Transducer interface.
- Low-cost thermocouple amplifier.
- Industrial process controls.
- Difference amplifier.
- Low-cost data acquisition.
Q & A
- What is the gain range of the AD622ANZ?
The AD622ANZ has a gain range of 1 to 1000, settable with one external resistor.
- What are the typical package options for the AD622ANZ?
The AD622ANZ is available in 8-lead PDIP and 8-lead SOIC_N packages.
- What is the maximum supply current of the AD622ANZ?
The maximum supply current is 1.5 mA.
- What is the common-mode rejection ratio (CMRR) of the AD622ANZ at a gain of 1?
The CMRR at a gain of 1 is a minimum of 66 dB.
- What is the bandwidth of the AD622ANZ at a gain of 10?
The bandwidth at a gain of 10 is 800 kHz.
- How does the AD622ANZ improve over discrete op-amp designs?
The AD622ANZ offers better common-mode rejection, superior linearity, and temperature stability, along with reduced board area and component count compared to discrete designs.
- What are some typical applications of the AD622ANZ?
Typical applications include transducer interfaces, low-cost thermocouple amplifiers, industrial process controls, difference amplifiers, and low-cost data acquisition.
- What is the input offset voltage of the AD622ANZ?
The maximum input offset voltage is 125 μV.
- What is the slew rate of the AD622ANZ?
The slew rate is 1.2 V/μs.
- What is the operating temperature range of the AD622ANZ?
The operating temperature range is −40°C to +85°C.
