The AD8232 is an integrated signal conditioning block for ECG and other biopotential measurement applications. It is designed to extract, amplify, and filter small biopotential signals in the presence of noisy conditions, such as those created by motion or remote electrode placement. This design allows for an ultralow power analog-to-digital converter (ADC) or an embedded microcontroller to acquire the output signal easily.
The AD8232 can implement a two-pole high-pass filter for eliminating motion artifacts and the electrode half-cell potential. This filter is tightly coupled with the instrumentation architec-ture of the amplifier to allow both large gain and high-pass filtering in a single stage, thereby saving space and cost.
An uncommitted operational amplifier enables the AD8232 to create a three-pole low-pass filter to remove additional noise. The user can select the frequency cutoff of all filters to suit different types of applications.
To improve common-mode rejection of the line frequencies in the system and other undesired interferences, the AD8232 includes an amplifier for driven lead applications, such as right leg drive (RLD).
The AD8232 includes a fast restore function that reduces the duration of otherwise long settling tails of the high-pass filters. After an abrupt signal change that rails the amplifier (such as a leads off condition), the AD8232 automatically adjusts to a higher filter cutoff. This feature allows the AD8232 to recover quickly, and therefore, to take valid measurements soon after connecting the electrodes to the subject.
The AD8232 is available in a 4 mm × 4 mm, 20-lead LFCSP package. Performance is specified from 0°C to 70°C and is operational from −40°C to +85°C.
Features and Benefits
| Application SpecificAmplifiersHealthcare
|
| Document | note |
| AD8232: Single-Lead, Heart-Rate Monitor Front End Data Sheet (Rev. A) | PDF 245 kB |
| Document | note |
| UG-514: Evaluating the AD8232 Single-Lead Heart Rate Monitor Front End | PDF 487.9 K |
| Document | note |
| Part Number | Package | Packing Qty | Temp Range | Price 100-499 | Price 1000+ | RoHS |
|---|---|---|---|---|---|---|
| AD8232ACPZ-R7 Production | 20 ld LFCSP (4x4mm 2.5EP) | REEL 1500 | -40 to 85C | 0 | 1.36 | Y |
| AD8232ACPZ-RL Production | 20 ld LFCSP (4x4mm 2.5EP) | REEL 5000 | -40 to 85C | 0 | 1.36 | Y |
| AD8232ACPZ-WP Production | 20 ld LFCSP (4x4mm 2.5EP) | REEL 64 | -40 to 85C | 1.7 | 1.36 | Y |
| Part Number | Description | Price | RoHS |
|---|---|---|---|
| AD8232-EVALZ | Evaluation Board | 46.27 | Y |
