Part A
AD627BRZ
Công ty Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 6920 PCS
- Package
- SOIC-8
- Series
- Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps
Replacement verdict
Compatible functional replacement candidate
The AD627BRZ and AD627BR are functionally equivalent instrumentation amplifiers sharing the same core specifications, pinout, and package. The primary distinction is the AD627BRZ's RoHS-compliant, lead-free construction versus the leaded (non-RoHS) finish of the AD627BR, making the BRZ the preferred choice for current production and compliance-driven designs.
Amplifier Architecture
High match
Package and Pinout
High match
Electrical Specifications
High match
RoHS Compliance
Validation required
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 | AD627BR | Why it matters |
|---|---|---|---|
| Amplifier Type | Instrumentation Amplifier | Instrumentation Amplifier | Confirms both parts are the same functional category, a prerequisite for substitutability. |
| Number of Channels | 1 | 1 | Channel count must match for the parts to be drop-in replacements in a given circuit. |
| Supply Voltage Range | 2.2 V to 36 V (single), ±1.1 V to ±18 V (dual) | 2.2 V to 36 V (single), ±1.1 V to ±18 V (dual) | The operating supply window determines compatibility with the system power rail. |
| Gain Range | 1 to 1000 (set by external resistor) | 1 to 1000 (set by external resistor) | Gain configurability must match so the same external resistor network yields the intended amplification. |
| Input Offset Voltage (max) | ±150 µV | ±150 µV | Offset voltage directly affects DC accuracy; matching values preserve measurement precision. |
| Input Bias Current (max) | 27 nA | 27 nA | Bias current impacts error in high-impedance sensor interfaces; equal values ensure equivalent behavior. |
| Gain Bandwidth Product | 80 kHz (G = 1) | 80 kHz (G = 1) | Bandwidth limits the maximum signal frequency the amplifier can handle accurately. |
| Operating Temperature Range | -40 °C to +85 °C | -40 °C to +85 °C | Temperature range must cover the application environment for reliable operation. |
| Package / Mounting | 8-Lead SOIC (RoHS-compliant) | 8-Lead SOIC (non-RoHS) | The Z suffix denotes RoHS compliance; this affects regulatory and assembly compatibility even though the footprint is identical. |
| RoHS Status | RoHS Compliant | Non-RoHS (contains lead) | RoHS compliance is required for many markets and affects solder process and environmental compliance. |
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 | AD627BR |
|---|---|---|
| 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 | 25 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 is the difference between the AD627BRZ and the AD627BR?
The AD627BRZ is the RoHS-compliant, lead-free (Pb-free) version of the AD627BR. Both are the B-grade, 8-lead SOIC (R-8) package variants of the AD627 micropower instrumentation amplifier, but the AD627BRZ carries the "Z" suffix denoting RoHS compliance and a lead-free termination finish, while the AD627BR is the non-RoHS predecessor. Electrically, both are specified as B-grade with the same datasheet performance limits.
Are the AD627BRZ and AD627BR electrically identical?
Yes. Both are B-grade AD627 devices in the same 8-lead SOIC package and share the same datasheet specifications, including gain range of 5 to 1000 set by a single external resistor, micropower supply current, and rail-to-rail output. The only documented difference is the RoHS/lead-free status indicated by the "Z" suffix on the AD627BRZ.
Can the AD627BRZ be used as a direct drop-in replacement for the AD627BR?
Yes, in most cases. Both parts use the identical 8-lead SOIC (R-8) package and pinout, so the PCB land pattern is unchanged. The AD627BRZ is lead-free and RoHS-compliant, so it is suitable for lead-free soldering processes; verify that your assembly process and any regulatory requirements are compatible before substituting.
What package do the AD627BRZ and AD627BR use?
Both devices are supplied in the 8-lead SOIC package (Analog Devices R-8 suffix). The package outline and pin assignments are the same for both orderable part numbers.
What is the gain range and how is gain set on these devices?
The AD627 is a micropower instrumentation amplifier whose gain is programmed with a single external resistor connected between the RG pins. Per the datasheet, gains from 5 to 1000 are achievable with a single resistor, and higher gains can be obtained with additional external components. This applies equally to the AD627BRZ and AD627BR.
Do the AD627BRZ and AD627BR differ in temperature grade or performance grade?
No. Both are B-grade parts, which is the higher-precision grade of the AD627. The "Z" in AD627BRZ denotes RoHS compliance and lead-free construction, not a different temperature or performance grade. Refer to the manufacturer datasheet for the exact B-grade specifications.
Which part should be selected for a new lead-free/RoHS-compliant design?
The AD627BRZ should be selected for new designs requiring RoHS compliance and lead-free assembly, since the "Z" suffix indicates Pb-free termination finish and RoHS compliance. The AD627BR is the non-RoHS version and is generally intended for legacy or exempt applications.