Overview
The AD22050 is a single-supply difference amplifier designed for amplifying and low-pass filtering small differential voltages. It is particularly useful for applications where the input signals have large common-mode voltages. The amplifier operates on a single supply voltage ranging from +3.0 V to +36 V and is capable of handling peak input voltages up to 60 V for 40 ms. It features an accurate midscale offset capability, making it suitable for amplifying bipolar signals.
Key Specifications
| Parameter | Value |
|---|---|
| Supply Voltage | +3.0 V to +36 V |
| Peak Input Voltage (40 ms) | +60 V |
| Reversed Supply Protection | -34 V |
| Operating Temperature Range | -40°C to +125°C |
| Gain Range | ×1 to ×160 |
| Input Common-Mode Range | Below ground to +24 V (using +5 V supply) |
| Differential Input Resistance | 400 kΩ |
| Output Span | 20 mV to (VS - 0.2) V |
| Low-Pass Filtering | 1-, 2-, 3-Pole available |
Key Features
- Single-supply operation with a wide supply voltage range (+3.0 V to +36 V)
- High gain range (×1 to ×160) with adjustable gain settings
- Excellent common-mode rejection ratio (CMRR) of at least 80 dB
- Accurate midscale offset capability for bipolar signal amplification
- Transient spike protection and RFI filters included
- Provisions for optional low-pass filtering (1-, 2-, 3-pole)
- Differential input resistance of 400 kΩ
- Drives 1 kΩ load to +4 V using VS = +5 V
Applications
The AD22050 is suitable for various applications requiring the amplification of small differential signals in the presence of large common-mode voltages. These include:
- Industrial automation and control systems
- Medical devices and diagnostic equipment
- Instrumentation and measurement systems
- Smart industry and IoT applications
- Electrification and digital health solutions
Q & A
- What is the supply voltage range of the AD22050?
The AD22050 operates on a single supply voltage ranging from +3.0 V to +36 V. - What is the peak input voltage the AD22050 can handle?
The AD22050 can handle peak input voltages up to 60 V for 40 ms. - What is the common-mode rejection ratio (CMRR) of the AD22050?
The CMRR of the AD22050 is at least 80 dB. - Can the AD22050 drive a 1 kΩ load?
Yes, the AD22050 can drive a 1 kΩ load to +4 V using a +5 V supply. - What types of low-pass filtering are available on the AD22050?
The AD22050 offers 1-, 2-, and 3-pole low-pass filtering options. - What is the operating temperature range of the AD22050?
The operating temperature range of the AD22050 is -40°C to +125°C. - Does the AD22050 have transient spike protection?
Yes, the AD22050 includes transient spike protection and RFI filters. - What is the differential input resistance of the AD22050?
The differential input resistance of the AD22050 is 400 kΩ. - Can the gain of the AD22050 be adjusted?
Yes, the gain of the AD22050 can be adjusted from ×1 to ×160. - What is the input common-mode range of the AD22050 using a +5 V supply?
The input common-mode range extends from below ground to +24 V using a +5 V supply.
