Part A
AD627BRZ
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 6920 Stückzahl
- Package
- SOIC-8
- Series
- Linear-Verstärker.Instrumentation, OP-Verstärker, Pufferverstärker
Replacement verdict
Compatible functional replacement candidate
The AD627BRZ and AD627AR-REEL7 are functionally compatible instrumentation amplifiers sharing the same core architecture, pinout, and supply range, making the AD627BRZ a viable replacement candidate for the AD627AR-REEL7 in most designs. The primary distinction lies in grade-level specifications, where the BRZ offers tighter offset voltage and improved gain accuracy, while the AR-REEL7 is supplied in tape-and-reel packaging for automated assembly. Designers should validate gain-setting resistor tolerances and offset budget against the target application before substituting.
Package Type
High match
Pin Configuration
High match
Input Offset Voltage Grade
Validation required
Gain Error Grade
Validation required
Parts at a glance
Part B
AD627AR-REEL7
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 239 Stückzahl
- Package
- SOIC-8
- Series
- Linear-Verstärker.Instrumentation, OP-Verstärker, Pufferverstärker
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-REEL7 | Why it matters |
|---|---|---|---|
| Grade / Temperature Range | B grade, -40°C to +85°C | A grade, -40°C to +85°C | Grade determines guaranteed specifications such as offset voltage and gain error; B grade offers tighter limits than A grade, affecting precision in critical signal chains. |
| Input Offset Voltage (max) | ±125 µV | ±250 µV | Lower offset voltage reduces DC error at the output, which is important for low-level sensor signal amplification and precision measurement. |
| Input Offset Voltage Drift (max) | ±1 µV/°C | ±3 µV/°C | Drift determines offset stability over temperature; tighter drift in the B grade maintains accuracy across the operating range. |
| Gain Error (max) | 0.02% | 0.05% | Gain error affects the accuracy of the amplified signal; lower gain error in the B grade improves overall measurement precision. |
| Input Bias Current (max) | 10 nA | 25 nA | Bias current creates error across source impedance; lower bias current in the B grade is preferable for high-impedance sensor interfaces. |
| Noise (0.1 Hz to 10 Hz, RTI) | 0.9 µV p-p | 1.0 µV p-p | Low-frequency noise limits resolution for DC and low-frequency signals; slightly lower noise in the B grade benefits precision low-bandwidth applications. |
| Supply Voltage Range | 2.2 V to 36 V (±1.1 V to ±18 V) | 2.2 V to 36 V (±1.1 V to ±18 V) | Wide single/dual supply range enables use in battery-powered and industrial systems; identical range means both parts are interchangeable for supply compatibility. |
| Gain Range | 1 to 1000 | 1 to 1000 | Programmable gain via a single resistor defines application flexibility; identical gain range means both parts support the same signal scaling. |
| Package | 8-Lead SOIC | 8-Lead SOIC | Package compatibility ensures the parts are drop-in replacements on the same PCB footprint. |
| Supply Current (max) | 85 µA | 85 µA | Low quiescent current is critical for portable and battery-powered designs; identical current draw means no change in power budget. |
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-REEL7 |
|---|---|---|
| Supplier | - | Analog Devices Inc.,Rochester Electronics, LLC |
| 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-REEL7?
The AD627BRZ is the B-grade version of the AD627 instrumentation amplifier in an 8-lead SOIC package, while the AD627AR-REEL7 is the A-grade version supplied in tape-and-reel packaging. The primary difference is the grade specification: the B-grade offers tighter guaranteed offset voltage, offset drift, and gain error than the A-grade. Both are functionally the same micropower instrumentation amplifier.
Are the AD627BRZ and AD627AR-REEL7 electrically interchangeable in an existing design?
Yes, both devices are pin-compatible AD627 instrumentation amplifiers in the same 8-lead SOIC footprint and share the same supply range, gain-setting configuration, and pinout. However, because the B-grade has tighter specifications than the A-grade, substituting an A-grade part where a B-grade was specified may reduce guaranteed performance margins. Substitution should be validated against the design's error budget.
What is the supply voltage range for the AD627BRZ and AD627AR-REEL7?
Both the AD627BRZ and AD627AR-REEL7 operate from a single supply of 2.2 V to 36 V, or from dual supplies of ±1.1 V to ±18 V, as specified in the Analog Devices AD627 datasheet.
How is gain set on the AD627BRZ and AD627AR-REEL7?
Gain on both devices is set by a single external resistor connected between the RG pins, using the relationship G = 5 + (200 kΩ / RG). This allows gains from 5 to 1000, per the AD627 datasheet.
What is the difference in offset voltage between the B-grade and A-grade AD627?
The AD627B (AD627BRZ) has a maximum input offset voltage of 125 µV, while the AD627A (AD627AR-REEL7) has a maximum input offset voltage of 250 µV, as specified in the Analog Devices AD627 datasheet. The B-grade therefore offers tighter offset performance.
What package and packaging options apply to these two parts?
Both the AD627BRZ and AD627AR-REEL7 are offered in an 8-lead SOIC package. The AD627BRZ is supplied in tube/standard packaging, while the AD627AR-REEL7 suffix indicates tape-and-reel packaging for automated assembly.
Do the AD627BRZ and AD627AR-REEL7 share the same operating temperature range?
Yes, both the AD627BRZ and AD627AR-REEL7 are specified over the industrial temperature range of −40°C to +85°C, per the Analog Devices AD627 datasheet.
What is the quiescent supply current of the AD627BRZ and AD627AR-REEL7?
Both devices draw a maximum quiescent supply current of 85 µA, making them suitable for low-power, battery-operated signal conditioning applications, as stated in the AD627 datasheet.