AD8227BRZ - Wide Supply Range In-Amp | Analog Devices
MPN: AD8227BRZ ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $4.37 | $4.37 |
| 10 | $3.94 | $39.40 |
| 100 | $3.28 | $328.00 |
| 500 | $2.84 | $1,420.00 |
| 1,000 | $2.4 | $2,400.00 |
Drop-in alternatives for AD8227BRZ — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
AD8227ARZ
✅ Drop-In✓ In Stock
$3.1 / Unit
View Datasheet →AD8226ARZ
✅ Drop-In📋 Reference alternative (not in catalog)
AD8226BRZ
✅ Drop-In✓ In Stock
$2.59 / Unit
View Datasheet →AD8221ARZ
✅ Drop-In✓ In Stock
$3.29 / Unit
View Datasheet →AD620ARZ
✅ Drop-In✓ In Stock
$7.2 / Unit
View Datasheet →AD8227BRZ Maximum Ratings & Electrical Characteristics
| Amplifier Type | Instrumentation |
| Number of Circuits | 1 |
| Gain Range | 5 to 1000 |
| Supply Voltage Range (Dual) | ±2.25 V to ±18 V |
| Supply Voltage Range (Single) | 4.5 V to 36 V |
| Bandwidth | 250 kHz (G = 5) |
| Input Offset Voltage | 100 µV |
| Input Bias Current | 20 nA |
| CMRR | 80 dB (G = 5) |
| Output Type | Rail-to-Rail |
| Quiescent Current | 700 µA |
| Operating Temperature Range | -40°C to +125°C |
| Package / Case | 8-SOIC (0.154", 3.90mm Width) |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
AD8227BRZ Pin Configuration
| Pin 1 | RG — Gain setting resistor connection |
| Pin 2 | -IN — Inverting input |
| Pin 3 | +IN — Non-inverting input |
| Pin 4 | V- — Negative supply |
| Pin 5 | REF — Reference voltage input |
| Pin 6 | VOUT — Output |
| Pin 7 | V+ — Positive supply |
| Pin 8 | RG — Gain setting resistor connection |
Safe Operating Area (SOA) & Thermal Characteristics
No official SOA curve available for this component. Always operate within absolute maximum ratings specified in the datasheet. Ensure adequate cooling and derate as needed.
Typical Applications
AD8227BRZ is suitable for 6 applications: Industrial Process Control, Medical Instrumentation, Data Acquisition Systems, Bridge Amplifiers, Portable and Battery-Powered Devices, Automotive Sensor Interfaces.
Industrial Process Control
The AD8227BRZ is ideal for industrial process control where precise measurement of sensor signals is critical. Its wide supply range of ±2.25 V to ±18 V allows operation from standard industrial power rails, while the high CMRR of 80 dB rejects common-mode noise from motors and other equipment. The gain range of 5 to 1000, set by a single resistor, enables flexible scaling of signals from thermocouples, RTDs, and strain gauges. The low input offset voltage of 100 µV ensures accurate DC measurements, and the rail-to-rail output maximizes dynamic range for ADC interfacing. Its industrial temperature range of -40°C to +125°C ensures reliable operation in harsh factory environments.
Recommended
Medical Instrumentation
In medical instrumentation, the AD8227BRZ provides accurate signal conditioning for biopotential measurements such as ECG and EEG. Its low input offset voltage of 100 µV and high CMRR of 80 dB are essential for rejecting 50/60 Hz interference from the body and power lines. The wide supply range allows operation from battery supplies, and the low quiescent current of 700 µA extends battery life in portable devices. The gain range of 5 to 1000 enables amplification of small physiological signals to levels suitable for ADC conversion. The rail-to-rail output ensures full-scale utilization of the ADC input range, and the industrial temperature range supports clinical environments.
Recommended
Data Acquisition Systems
The AD8227BRZ is well-suited for data acquisition systems that require precise amplification of small differential signals. Its wide input range and rail-to-rail output allow it to interface directly with ADCs, maximizing dynamic range. The gain range of 5 to 1000, set by a single resistor, provides flexibility in scaling signals from various sensors. The low input offset voltage of 100 µV and CMRR of 80 dB ensure accurate measurement in noisy environments. The device's low quiescent current of 700 µA is beneficial for multi-channel systems where power dissipation is a concern. Its industrial temperature range makes it suitable for both laboratory and field data acquisition.
Recommended
Bridge Amplifiers
The AD8227BRZ is an excellent choice for bridge amplifier applications, such as load cells and pressure sensors. Its high CMRR of 80 dB rejects common-mode voltage from the bridge excitation, ensuring accurate measurement of the differential signal. The gain range of 5 to 1000 allows precise scaling of the small bridge output to a usable level. The low input offset voltage of 100 µV minimizes DC errors, and the rail-to-rail output provides maximum signal swing. The wide supply range supports both 5 V and 24 V bridge excitation systems. The device's low power consumption is advantageous for battery-powered portable scales.
Recommended
Portable and Battery-Powered Devices
The AD8227BRZ is ideal for portable and battery-powered devices due to its low quiescent current of 700 µA and wide supply range of 4.5 V to 36 V. It can operate directly from a single lithium-ion battery or two AA batteries, making it suitable for handheld instruments and remote sensors. The rail-to-rail output maximizes signal swing for ADC interfacing, and the gain range of 5 to 1000 provides flexibility in amplifying sensor signals. The industrial temperature range ensures reliable operation in outdoor environments. Its small 8-SOIC package saves board space in compact designs.
Recommended
Automotive Sensor Interfaces
The AD8227BRZ is suitable for automotive sensor interfaces, such as pressure and temperature sensors in engine control units. Its wide supply range of ±2.25 V to ±18 V accommodates automotive battery voltage variations, and the high CMRR of 80 dB rejects noise from the vehicle's electrical system. The gain range of 5 to 1000 allows amplification of small sensor signals to levels suitable for the ECU's ADC. The industrial temperature range of -40°C to +125°C meets automotive requirements. The low quiescent current of 700 µA helps reduce overall power consumption in the vehicle.
Recommended
Recommended Products Summary
Engineering reference data for AD8227BRZ — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | AD8227ARZ | AD8226ARZ | AD8226BRZ | AD8221ARZ | AD620ARZ |
|---|---|---|---|---|---|---|
| Package | 8-SOIC | 8-SOIC | 8-SOIC | 8-SOIC | 8-SOIC | 8-SOIC |
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| Gain Range | 5 to 1000 | 5 to 1000 | 1 to 1000 | 1 to 1000 | 1 to 1000 | 1 to 1000 |
| Bandwidth | 250 kHz (G=5) | 250 kHz (G=5) | 1.5 MHz (G=1) | 1.5 MHz (G=1) | 825 kHz (G=1) | 120 kHz (G=100) |
| Input Offset Voltage | 100 µV | 200 µV | 200 µV | 100 µV | 25 µV | 50 µV |
| CMRR | 80 dB (G=5) | 80 dB (G=5) | 80 dB (G=5) | 80 dB (G=5) | 90 dB (G=1) | 100 dB (G=10) |
| Supply Voltage Range | ±2.25 V to ±18 V | ±2.25 V to ±18 V | ±2.25 V to ±18 V | ±2.25 V to ±18 V | ±2.25 V to ±18 V | ±2.3 V to ±18 V |
| Quiescent Current | 700 µA | 700 µA | 700 µA | 700 µA | 900 µA | 900 µA |
Key Differentiators
- Lower input offset voltage than AD8227ARZ (vs AD8227ARZ)
- Wider supply range than AD620ARZ (vs AD620ARZ)
- Lower quiescent current than AD8221ARZ (vs AD8221ARZ)
Design Notes
Ensure proper power supply decoupling by placing 0.1 µF ceramic capacitors close to the V+ and V- pins. For noisy environments, add a 10 µF tantalum capacitor in parallel. The AD8227BRZ operates from ±2.25 V to ±18 V dual supplies or 4.5 V to 36 V single supply. Verify that the supply voltages do not exceed the absolute maximum ratings to prevent damage.
For optimal CMRR, keep the input traces symmetrical and minimize parasitic capacitance. Use a ground plane under the device to reduce noise pickup. The gain-setting resistor (RG) should be placed close to the RG pins to minimize stray capacitance, which can affect bandwidth. Use precision resistors with low temperature coefficient for accurate gain.
Do not leave the REF pin floating; drive it with a low-impedance source to maintain CMRR. The gain-setting resistor must be connected between the two RG pins; an incorrect connection will result in wrong gain. Avoid exceeding the input common-mode voltage range, which can cause output saturation. Refer to the AD8227 datasheet for the input voltage range specifications.
Compliance Information
RoHS compliant per distributor listings. Other compliance information not specified in the provided data.
