Overview
The AD8237ARMZ-R7, produced by Analog Devices Inc., is a micropower, zero drift, rail-to-rail input and output instrumentation amplifier. This device is designed for applications requiring high precision and low power consumption. It employs an indirect current feedback architecture, enabling true rail-to-rail capability and the ability to amplify signals with common-mode voltages at or slightly beyond the supply voltages. This makes it an excellent choice for portable systems, medical instrumentation, and other applications where power efficiency and accuracy are crucial.
Key Specifications
| Parameter | Value |
|---|---|
| Supply Voltage | 1.8 V to 5.5 V |
| Supply Current | 115 μA (typical) |
| Gain Range | 1 to 1000 V/V (set by external resistors) |
| Gain Error | 0.005% (VOUT = 0.1 V to 4.9 V, G = 1 to 1000) |
| Gain Error vs. VCM | 15 ppm/V |
| Gain vs. Temperature | 1 ppm/°C |
| Common Mode Rejection Ratio (CMRR) | 106 dB (minimum) |
| Offset Voltage Drift | 0.3 μV/°C (maximum) |
| Bandwidth | 200 kHz |
| Package | 8-lead MSOP |
| Operating Temperature Range | -40°C to +125°C |
| ESD Rating | 8 kV HBM |
Key Features
- Micropower consumption with a typical supply current of 115 μA.
- Zero drift and true rail-to-rail input and output capability.
- Gain set by two external resistors, allowing gains from 1 to 1000.
- Excellent gain accuracy and low gain drift across all gains.
- High common mode rejection ratio (CMRR) of 106 dB.
- Low offset voltage drift of 0.3 μV/°C.
- On-chip RFI filter and bandwidth mode pin (BW) for compensation.
- Single-supply operation with a voltage range of 1.8 V to 5.5 V.
Applications
- Bridge amplification.
- Pressure measurement.
- Medical instrumentation.
- Thermocouple interface.
- Portable systems.
- Current measurement.
Q & A
- What is the supply voltage range of the AD8237ARMZ-R7? The supply voltage range is from 1.8 V to 5.5 V.
- What is the typical supply current of the AD8237ARMZ-R7? The typical supply current is 115 μA.
- How is the gain of the AD8237ARMZ-R7 set? The gain is set by two external resistors, allowing gains from 1 to 1000.
- What is the common mode rejection ratio (CMRR) of the AD8237ARMZ-R7? The minimum CMRR is 106 dB.
- What is the offset voltage drift of the AD8237ARMZ-R7? The maximum offset voltage drift is 0.3 μV/°C.
- What is the bandwidth of the AD8237ARMZ-R7? The bandwidth is 200 kHz.
- What package options are available for the AD8237ARMZ-R7? It is available in an 8-lead MSOP package.
- What is the operating temperature range of the AD8237ARMZ-R7? The operating temperature range is from -40°C to +125°C.
- What is the ESD rating of the AD8237ARMZ-R7? The ESD rating is 8 kV HBM.
- What are some typical applications of the AD8237ARMZ-R7? Typical applications include bridge amplification, pressure measurement, medical instrumentation, thermocouple interface, portable systems, and current measurement.
