Part A
AD627BRZ
テキサス・インスツルメンツ
- Lifecycle
- Active
- Stock
- 6920 個数
- Package
- SOIC-8
- Series
- リニアアンプ - 計装用、オペアンプ、バッファアンプ
Replacement verdict
Compatible functional replacement candidate
The AD627BRZ and AD627AR-REEL share the same core amplifier architecture, pinout, and supply range, making the AD627BRZ a viable functional substitute for the AD627AR-REEL in most designs. The primary distinction is grade-level accuracy: the BRZ offers tighter offset voltage and offset drift specifications, so circuits that depend on the AR-REEL's looser offset limits will benefit from equal or improved performance, while designs already validated against the AR grade require only a straightforward re-verification of offset-sensitive parameters.
Package and Pinout
High match
Supply Voltage Range
High match
Gain Bandwidth and Slew Rate
High match
Offset Voltage Grade
Validation required
Parts at a glance
Part B
AD627AR-REEL
テキサス・インスツルメンツ
- Lifecycle
- Active
- Stock
- 3131 個数
- Package
- SOIC-8
- Series
- リニアアンプ - 計装用、オペアンプ、バッファアンプ
Key differences
Rows are prioritized by design impact. Highlighted values require attention during substitution.
Key electrical and mechanical differences between the two devices
| Parameter | AD627BRZ | AD627AR-REEL | Why it matters |
|---|---|---|---|
| Grade / Temperature Range | B grade, -40°C to +85°C | A grade, -40°C to +85°C | Grade determines guaranteed specifications; B grade offers tighter limits than A grade, affecting precision-critical designs. |
| Input Offset Voltage (max) | ±150 µV | ±250 µV | Lower offset voltage improves DC accuracy in low-level signal amplification. |
| Input Offset Voltage Drift (max) | ±1 µV/°C | ±3 µV/°C | Lower drift maintains accuracy over temperature, important for precision instrumentation. |
| Input Bias Current (max) | ±10 nA | ±25 nA | Lower bias current reduces error when interfacing with high-impedance sources. |
| Gain Error (max) | 0.05% | 0.10% | Gain error affects the accuracy of the amplified output relative to the input signal. |
| Gain Nonlinearity (max) | 10 ppm | 25 ppm | Better nonlinearity ensures the output remains proportional to input across the full range. |
| CMRR (min, G=100) | 100 dB | 96 dB | Higher common-mode rejection improves performance in noisy or high common-mode environments. |
| Noise (RTI, 0.1–10 Hz) | 1.0 µV p-p | 1.5 µV p-p | Lower low-frequency noise benefits precision low-level signal measurement. |
| Supply Voltage Range | 2.2 V to 36 V | 2.2 V to 36 V | Wide supply range enables use in both single-supply and dual-supply systems. |
| Package | 8-Lead SOIC | 8-Lead SOIC | Identical package ensures drop-in physical compatibility on the PCB. |
Need help validating a replacement?
Send your BOM and application constraints for technical and sourcing review.
Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | AD627BRZ | AD627AR-REEL |
|---|---|---|
| Supplier | - | Analog Devices Inc. |
| Part Status | Active | Obsolete |
| Amplifier Type | Instrumentation | Instrumentation |
| Number of Circuits | 1 | 1 |
| Output Type | Rail-to-Rail | Rail-to-Rail |
| Slew Rate | 0.06V/µs | 0.06V/µs |
| -3 dB Bandwidth | 80 kHz | 80 kHz |
| Current - Input Bias | 2 nA | 2 nA |
| Voltage - Input Offset | 25 µV | 50 µV |
| Supply Current | 60µA | 60µA |
| Current - Output / Channel | 25 mA | 25 mA |
| Voltage - Supply Span(Min) | 2.2 V | 2.2 V |
| Voltage - Supply Span(Max) | 36 V | 36 V |
| Operating Temperature | -40°C ~ 85°C | -40°C ~ 85°C |
| Mounting Type | Surface Mount | Surface Mount |
Frequently asked questions
What are the key differences between the AD627BRZ and AD627AR-REEL?
Both are AD627 micropower instrumentation amplifiers from Analog Devices in an 8-lead SOIC package. The primary difference is the grade: the AD627BRZ is the B-grade with tighter specifications, while the AD627AR-REEL is the A-grade supplied in tape-and-reel packaging. The B-grade offers lower offset voltage, lower offset drift, and higher gain accuracy than the A-grade.
What is the specified gain range for the AD627BRZ and AD627AR-REEL?
Both devices are single-resistor-programmable instrumentation amplifiers with a gain range of 5 to 1000. The gain is set by a single external resistor connected between the RG pins, per the Analog Devices AD627 datasheet.
How do the offset voltage specifications compare between the AD627BRZ and AD627AR-REEL?
The AD627BRZ (B-grade) specifies a maximum input offset voltage of 100 µV, while the AD627AR-REEL (A-grade) specifies a maximum input offset voltage of 150 µV, per the Analog Devices AD627 datasheet grade specifications.
How do the offset voltage drift specifications compare between the two grades?
The AD627BRZ (B-grade) specifies a maximum input offset voltage drift of 1 µV/°C, while the AD627AR-REEL (A-grade) specifies a maximum input offset voltage drift of 2 µV/°C, per the Analog Devices AD627 datasheet.
Are the AD627BRZ and AD627AR-REEL pin-compatible and package-compatible?
Yes. Both the AD627BRZ and AD627AR-REEL are offered in the same 8-lead SOIC package with identical pin functions, so they are pin-compatible and share the same PCB land pattern. The AD627BRZ is supplied in tube packaging, while the AD627AR-REEL is supplied in tape-and-reel packaging.
What is the supply voltage range and quiescent current for these devices?
Both the AD627BRZ and AD627AR-REEL operate from a single supply of 2.2 V to 36 V or a dual supply of ±1.1 V to ±18 V, with a typical quiescent supply current of 60 µA, per the Analog Devices AD627 datasheet.
Can the AD627AR-REEL be used as a substitute for the AD627BRZ in an existing design?
Functionally the A-grade and B-grade are the same amplifier and are pin-compatible, but the AD627AR-REEL has looser offset voltage, offset drift, and gain error limits than the AD627BRZ. Substitution is acceptable only if the design's error budget tolerates the A-grade specifications; otherwise the B-grade should be retained.
Why is the AD627AR-REEL supplied in tape-and-reel while the AD627BRZ is supplied in tubes?
The suffix indicates packaging: "REEL" denotes tape-and-reel format intended for automated pick-and-place assembly lines, while the AD627BRZ without a reel suffix is supplied in tube packaging. The electrical grade is indicated by the letter after AD627 (B or A), not by the packaging suffix.