Overview
The AD626ANZ is a low-cost, true single-supply differential amplifier produced by Analog Devices Inc. It is designed for amplifying and low-pass filtering small differential voltages from sources having a large common-mode voltage. This amplifier is particularly useful in applications where a single power supply is preferred, and it offers a range of features that make it versatile and reliable.
Key Specifications
| Parameter | Value | Conditions |
|---|---|---|
| Supply Voltage Range | +2.4 V to +10 V (Single Supply), ±1.2 V to ±6 V (Dual Supply) | TA = TMIN to TMAX |
| Gain | 10 or 100 (preset), adjustable with external resistor | |
| Input Offset Voltage | 500 μV Max | |
| Common-Mode Rejection Ratio (CMRR) | 90 dB Typ | |
| Output Voltage Range | 0.03 V to 4.9 V (with +5 V supply) | |
| Quiescent Current | 1.5 mA to 2 mA | Gain = 10 or 100 |
| Operating Temperature Range | –40°C to +85°C | |
| Package Types | 8-lead plastic mini-DIP, 8-lead SOIC |
Key Features
- Pin selectable gains of 10 and 100
- True single-supply operation with a wide supply voltage range
- Optional low-pass filtering capability
- Excellent DC performance with low input offset voltage
- Large common-mode range with high CMRR
- Input protection against continuous overload up to 50 V
- RFI filters included in the attenuator network
- Stable driving capacitive loads up to 50 pF (G10) or 200 pF (G100)
Applications
The AD626ANZ is suitable for various applications where differential voltage amplification and filtering are required. These include:
- Industrial control systems
- Medical devices requiring differential signal amplification
- Aerospace and defense systems
- Automotive systems needing robust and reliable signal processing
- Test and measurement equipment
Q & A
- What is the supply voltage range for the AD626ANZ?
The AD626ANZ operates on a single supply voltage range of +2.4 V to +10 V and a dual supply voltage range of ±1.2 V to ±6 V.
- How can the gain of the AD626ANZ be adjusted?
The gain can be adjusted by connecting an external resistor between Pin 7 and analog ground for gains between 10 and 100. For a gain of 100, Pin 7 can be grounded.
- What is the common-mode rejection ratio (CMRR) of the AD626ANZ?
The CMRR of the AD626ANZ is typically 90 dB.
- What is the operating temperature range of the AD626ANZ?
The operating temperature range is –40°C to +85°C.
- Does the AD626ANZ have built-in low-pass filtering capability?
- How much quiescent current does the AD626ANZ consume?
The quiescent current is between 1.5 mA and 2 mA for both gain settings of 10 and 100.
- What types of packages are available for the AD626ANZ?
The AD626ANZ is available in 8-lead plastic mini-DIP and 8-lead SOIC packages.
- Is the AD626ANZ protected against electrostatic discharge (ESD)?
The AD626ANZ features proprietary ESD protection circuitry, but proper ESD precautions are still recommended to avoid performance degradation or loss of functionality.
- Can the AD626ANZ drive capacitive loads?
- What is the input offset voltage of the AD626ANZ?
The input offset voltage is 500 μV Max.
