AD8227BRZ-RL7 - Low Cost Wide Supply Range In-Amp | Analog Devices
MPN: AD8227BRZ-RL7 ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $4.85 | $4.85 |
| 10 | $4.36 | $43.60 |
| 100 | $3.88 | $388.00 |
| 500 | $3.49 | $1,745.00 |
| 1,000 | $3.1 | $3,100.00 |
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-R7
✅ Drop-In📋 Reference alternative (not in catalog)
AD8227ARZ-R7
✅ Drop-In📋 Reference alternative (not in catalog)
AD8227BRZ
✅ Drop-In✓ In Stock
$2.95 / Unit
View Datasheet →AD8227ARZ
✅ Drop-In✓ In Stock
$3.1 / Unit
View Datasheet →AD8227BRZ-RL
✅ Drop-In📋 Reference alternative (not in catalog)
AD8227BRZ-RL7 Maximum Ratings & Electrical Characteristics
| Amplifier Type | Instrumentation Amplifier |
| Number of Circuits | 1 |
| Gain Range | 5 to 1000 |
| Supply Voltage Range | ±1.5 V to ±18 V (2.2 V to 36 V single supply) |
| Input Bias Current | 20 nA |
| Output Type | Rail-to-Rail |
| Package | 8-SOIC |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
| Number of Pins | 8 |
| Input Voltage Range | Wide input range, can go below negative supply |
| Gain Setting | Single external resistor |
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 |
| Pin 6 | OUT — 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, Medical Instrumentation, Bridge Amplifiers, Data Acquisition Systems, Battery-Powered Devices, Automotive Sensor Interfaces.
Industrial Process Control
The AD8227BRZ-RL7 is ideal for industrial process control due to its wide supply range (±1.5 V to ±18 V) and ability to amplify small differential signals from bridge sensors and thermocouples. Its rail-to-rail output allows full use of the supply rails, and the input range can go below the negative supply, enabling single-supply operation. This makes it suitable for 4-20 mA loops and other industrial signal conditioning, where accuracy and noise rejection are critical.
Recommended
Medical Instrumentation
In medical instrumentation, the AD8227BRZ-RL7 provides high input impedance and low bias current (20 nA), making it suitable for amplifying signals from ECG, EEG, and other biosensors. Its wide supply range and rail-to-rail output ensure compatibility with battery-powered devices. The ability to amplify signals near ground without dual supplies is particularly beneficial for portable medical devices, where power efficiency and signal integrity are paramount.
Recommended
Bridge Amplifiers
The AD8227BRZ-RL7 excels in bridge amplifier applications, such as strain gauge and load cell interfaces. Its high common-mode rejection and low offset voltage ensure accurate measurement of small differential voltages. The single-resistor gain setting (5 to 1000) allows easy adjustment for different sensor sensitivities. The wide supply range supports both 5V and 24V systems, making it versatile for various industrial and automotive sensing applications.
Recommended
Data Acquisition Systems
For data acquisition systems, the AD8227BRZ-RL7 provides a cost-effective solution for conditioning analog signals before ADC conversion. Its rail-to-rail output maximizes the dynamic range of the ADC, and the wide input range accommodates various sensor outputs. The low bias current minimizes loading on high-impedance sources, preserving signal integrity. The compact 8-SOIC package is ideal for multi-channel systems where board space is limited.
Recommended
Battery-Powered Devices
The AD8227BRZ-RL7 is well-suited for battery-powered devices due to its low power consumption and ability to operate from a single supply as low as 2.2 V. The input range can go below the negative supply, allowing amplification of signals near ground without a negative rail, which simplifies power supply design. This makes it ideal for portable instrumentation, remote sensors, and other low-power applications where efficiency is critical.
Recommended
Automotive Sensor Interfaces
In automotive applications, the AD8227BRZ-RL7 can interface with various sensors such as pressure, temperature, and position sensors. Its wide supply range (up to 36 V) is compatible with automotive battery voltages, and its robustness ensures reliable operation in harsh environments. The rail-to-rail output and low offset voltage contribute to accurate signal processing, while the single-resistor gain setting simplifies calibration. This makes it a cost-effective choice for automotive electronic control units.
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-R7 | AD8227ARZ-R7 | AD8227ARMZ-RL |
|---|---|---|---|---|
| Package | 8-SOIC | 8-SOIC | 8-SOIC | 8-MSOP |
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| Input Bias Current | 20 nA | 20 nA | 27 nA | [DATA_NEEDED] |
| Supply Voltage Range | ±1.5 V to ±18 V | ±1.5 V to ±18 V | ±1.5 V to ±18 V | ±1.5 V to ±18 V |
| Gain Range | 5 to 1000 | 5 to 1000 | 5 to 1000 | 5 to 1000 |
| Output Type | Rail-to-Rail | Rail-to-Rail | Rail-to-Rail | Rail-to-Rail |
| Number of Circuits | 1 | 1 | 1 | 1 |
| RoHS | Compliant | Compliant | Compliant | Compliant |
Key Differentiators
- Low input bias current of 20 nA (vs AD8227ARZ-R7)
- Wide supply range up to ±18 V (vs AD8227ARMZ-RL)
- Single-resistor gain setting (vs AD8221ARZ)
Design Notes
Place the gain-setting resistor (RG) as close to the AD8227BRZ-RL7 as possible to minimize parasitic capacitance and inductance, which can affect gain accuracy and stability. Use a precision resistor with low temperature coefficient for stable gain over temperature. Keep the traces short and direct to the RG pins.
The AD8227BRZ-RL7 operates from ±1.5 V to ±18 V (2.2 V to 36 V single supply). Ensure the supply voltage is within this range and adequately decoupled with 0.1 uF ceramic capacitors close to the V+ and V- pins. For single-supply operation, the input common-mode range must be considered to avoid output clipping.
Do not exceed the absolute maximum supply voltage of 36 V. Also, ensure the input voltages stay within the specified input range to avoid damage. The reference pin (REF) should be driven with a low-impedance source to maintain accuracy. If unused, tie REF to ground or mid-supply as appropriate.
Compliance Information
RoHS compliance indicated in distributor listings. Other compliance data not specified in provided sources.
