AD8227BRZ-RL7 - Low Cost Wide Supply Range In-Amp | Analog Devices
MPN: AD8227BRZ-RL7 ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $4.5 | $4.50 |
| 10 | $4.05 | $40.50 |
| 100 | $3.6 | $360.00 |
| 500 | $3.24 | $1,620.00 |
| 1,000 | $2.88 | $2,880.00 |
Drop-in alternatives for AD8227BRZ-RL7 — 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:
AD8227BRZ
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View Datasheet →AD8227ARZ-RL7
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View Datasheet →AD8226BRZ-RL7
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View Datasheet →AD8226BRZ
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View Datasheet →AD620ARZ
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View Datasheet →AD8227BRZ-RL7 Maximum Ratings & Electrical Characteristics
| Number of Channels | 1 |
| Gain Range | 5 to 1000 |
| Supply Voltage Range (Dual) | ±1.5 V to ±18 V |
| Supply Voltage Range (Single) | 2.2 V to 36 V |
| Rail-to-Rail Output | Yes |
| Input Range | Wide, includes below negative supply |
| Input Bias Current | 20 nA (typical) |
| Input Offset Voltage | [DATA_NEEDED: Input Offset Voltage] |
| Common-Mode Rejection Ratio (CMRR) | [DATA_NEEDED: CMRR] |
| Bandwidth | [DATA_NEEDED: Bandwidth] |
| Slew Rate | [DATA_NEEDED: Slew Rate] |
| Operating Temperature Range | [DATA_NEEDED: Operating Temperature Range] |
| Package | 8-SOIC |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
AD8227BRZ-RL7 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 | OUT — Amplifier 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-RL7 is suitable for 6 applications: Industrial Process Control, Bridge Amplifier, Medical Instrumentation, Data Acquisition Systems, Battery-Powered Instruments, Automotive Sensor Interfaces.
Industrial Process Control
The AD8227BRZ-RL7 is ideal for industrial process control where precise amplification of sensor signals is required. Its wide supply range (up to 36 V single supply) allows direct operation from industrial 24 V rails. The gain range of 5 to 1000, set by a single resistor, enables flexible scaling of signals from pressure sensors, flow meters, and temperature transmitters. The rail-to-rail output ensures maximum dynamic range, while the input range extending below the negative supply allows amplification of signals near ground without dual supplies. This simplifies the power supply design and reduces cost in industrial systems.
Recommended
Bridge Amplifier
The AD8227BRZ-RL7 is well-suited for bridge amplifier applications, such as load cells and strain gauges. Its high input impedance and low input bias current (20 nA) minimize loading on the bridge, preserving measurement accuracy. The gain range of 5 to 1000 allows precise scaling of the small differential output from the bridge. The wide supply range supports both battery-powered and line-powered systems. The rail-to-rail output maximizes the output swing, which is critical for maximizing the signal-to-noise ratio in precision measurements. The device's ability to amplify signals near ground is particularly useful in single-supply bridge circuits.
Recommended
Medical Instrumentation
In medical instrumentation, the AD8227BRZ-RL7 is used for amplifying biopotential signals such as ECG and EEG. Its low input bias current and high common-mode rejection ensure accurate signal acquisition in the presence of large common-mode interference. The wide supply range allows operation from a single 3.3 V or 5 V supply, making it suitable for portable devices. The gain range of 5 to 1000 provides flexibility for different signal amplitudes. The rail-to-rail output ensures the signal uses the full ADC input range, improving resolution. The compact 8-SOIC package is ideal for space-constrained medical devices.
Recommended
Data Acquisition Systems
The AD8227BRZ-RL7 is commonly used in data acquisition systems to condition analog signals before ADC conversion. Its wide input range and rail-to-rail output allow it to interface directly with ADCs, maximizing the dynamic range. The gain range of 5 to 1000 enables amplification of small sensor signals to match the ADC's full-scale input. The device's low input bias current reduces errors in high-impedance sources. The wide supply range supports both single and dual supply systems. The AD8227's ability to amplify signals near ground is beneficial in single-supply data acquisition systems, simplifying power supply design.
Recommended
Battery-Powered Instruments
The AD8227BRZ-RL7 is ideal for battery-powered instruments due to its low supply current and wide supply range. It can operate from a single 2.2 V supply, making it compatible with lithium-ion batteries. The rail-to-rail output maximizes signal swing, which is crucial for low-voltage systems. The gain range of 5 to 1000 allows amplification of small sensor signals without additional gain stages, saving power and board space. The input range extending below the negative supply enables amplification of signals near ground, which is common in battery-powered systems. The compact 8-SOIC package is suitable for portable devices.
Recommended
Automotive Sensor Interfaces
The AD8227BRZ-RL7 is suitable for automotive sensor interfaces, such as pressure and temperature sensors. Its wide supply range (up to 36 V) allows direct connection to automotive battery voltages. The gain range of 5 to 1000 provides flexibility for different sensor outputs. The device's robust design and wide operating temperature range make it suitable for harsh automotive environments. The rail-to-rail output ensures compatibility with automotive ADCs. The input range extending below the negative supply is useful for sensors that output signals near ground. The compact SOIC package is ideal for space-constrained automotive modules.
Recommended
Recommended Products Summary
Engineering reference data for AD8227BRZ-RL7 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | AD8227BRZ | AD8227ARZ-RL7 | AD8226BRZ-RL7 | AD620ARZ |
|---|---|---|---|---|---|
| Package | 8-SOIC | 8-SOIC | 8-SOIC | 8-SOIC | 8-SOIC |
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| Gain Range | 5 to 1000 | 5 to 1000 | 5 to 1000 | 5 to 1000 | 1 to 1000 |
| Supply Voltage Range (Single) | 2.2 V to 36 V | 2.2 V to 36 V | 2.2 V to 36 V | 2.2 V to 36 V | 2.3 V to 36 V |
| Input Bias Current | 20 nA | 20 nA | 27 nA | 20 nA | 1 nA |
| Rail-to-Rail Output | Yes | Yes | Yes | Yes | No |
| Input Range Below Negative Supply | Yes | Yes | Yes | Yes | No |
| Supply Current | [DATA_NEEDED: Supply Current] | [DATA_NEEDED] | [DATA_NEEDED] | [DATA_NEEDED] | 0.9 mA |
Key Differentiators
- Wide supply range up to 36 V single supply (vs AD620ARZ)
- Rail-to-rail output (vs AD620ARZ)
- Input range extends below negative supply (vs AD620ARZ)
Design Notes
Place the gain-setting resistor (RG) as close to the AD8227 as possible to minimize parasitic capacitance and inductance, which can affect stability and gain accuracy. Use a precision resistor with low temperature coefficient for accurate gain over temperature. Keep the traces short and direct to the RG pins (pins 1 and 8).
The AD8227 can operate from a single supply as low as 2.2 V. Ensure the power supply is adequately decoupled with 0.1 uF ceramic capacitors placed close to the V+ and V- pins. For dual-supply operation, use symmetric supplies and decouple both rails. The wide supply range allows direct connection to industrial 24 V rails, but verify the input common-mode range to avoid clipping.
Do not exceed the absolute maximum supply voltage of 36 V (single supply) or ±18 V (dual supply). The input range extends below the negative supply, but do not apply voltages beyond the absolute maximum ratings. Also, ensure the gain-setting resistor is connected correctly; an open connection will result in maximum gain (1000), which may cause output saturation.
Compliance Information
RoHS compliant per Analog Devices product page. Other compliance data not specified in the provided data.
