Part A
AD629BRZ-R7
Công ty Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 7417 PCS
- Package
- SOIC-8
- Series
- Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps
Replacement verdict
Compatible functional replacement candidate
The AD629BRZ-R7 and AD629BR are functionally equivalent precision difference amplifiers sharing the same core specifications, package, and pinout, making them viable substitutes in most designs. The primary distinction lies in the packaging format, with the AD629BRZ-R7 supplied in tape-and-reel for automated assembly while the AD629BR is provided in tube form. Designers should confirm the supply format aligns with their production requirements before substituting.
Amplifier Function and Gain
High match
Package Type and Pinout
High match
Supply Voltage Range
High match
Packaging Format
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 | AD629BRZ-R7 | AD629BR | Why it matters |
|---|---|---|---|
| Amplifier Type | Difference Amplifier | Difference Amplifier | Both are difference amplifiers, so the core function is identical and they are functionally substitutable in the same circuit role. |
| Number of Channels | 1 | 1 | Single-channel configuration must match for pin-compatible replacement in single-amplifier designs. |
| Gain | 1 V/V (fixed) | 1 V/V (fixed) | A fixed unity gain means the transfer function is identical, so no recalibration of gain is needed when substituting. |
| Supply Voltage Range | ±2.5 V to ±18 V (dual) | ±2.5 V to ±18 V (dual) | Matching supply ranges ensure the part operates correctly in the same power rail configuration. |
| Input Offset Voltage (max) | 1 mV | 1 mV | Offset voltage directly affects DC accuracy; identical limits mean equivalent precision performance. |
| Input Common-Mode Voltage Range | -18 V to +18 V (at ±15 V supply) | -18 V to +18 V (at ±15 V supply) | Wide common-mode range determines high-voltage sensing capability; identical range preserves application suitability. |
| Bandwidth | 500 kHz (typical) | 500 kHz (typical) | Bandwidth governs signal frequency handling; matching values ensure equivalent dynamic response. |
| Operating Temperature Range | -40 °C to +85 °C | -40 °C to +85 °C | Identical temperature ratings confirm both parts suit the same environmental conditions. |
| Package / Mounting | 8-SOIC, surface mount, tape and reel | 8-SOIC, surface mount, tube | Same package and footprint allow direct board replacement, but the packaging format (reel vs tube) differs, affecting assembly handling. |
| Packaging / Ordering Format | Tape and reel (R7 suffix) | Tube | Packaging format affects automated pick-and-place assembly and inventory handling, though the electrical part is the same. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | AD629BRZ-R7 | AD629BR |
|---|---|---|
| Supplier | - | Rochester Electronics, LLC,Analog Devices Inc. |
| Part Status | Active | Obsolete |
| Amplifier Type | Differential | Differential |
| Number of Circuits | 1 | 1 |
| Slew Rate | 2.1V/µs | 2.1V/µs |
| -3 dB Bandwidth | 500 kHz | 500 kHz |
| Voltage - Input Offset | 100 µV | 100 µV |
| Supply Current | 900µA | 900µA |
| Current - Output / Channel | 25 mA | 25 mA |
| Voltage - Supply Span(Min) | 5 V | 5 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 main differences between the AD629BRZ-R7 and the AD629BR?
Both parts are the same AD629 high common-mode voltage difference amplifier from Analog Devices. The AD629BRZ-R7 is supplied in a 7-inch reel (R7) in a lead-free, RoHS-compliant SOIC package (Z suffix), while the AD629BR is the tube/rail version of the same B-grade device. The electrical specifications are identical; the difference is packaging and shipping format.
Are the AD629BRZ-R7 and AD629BR electrically and functionally interchangeable?
Yes. Both are B-grade AD629 difference amplifiers with the same die, pinout, and specified performance. They differ only in packaging format (reel vs. tube) and lead-free/RoHS status of the Z-suffix part, so they are functionally interchangeable in the same circuit.
What is the common-mode voltage range of the AD629?
The AD629 is designed to handle common-mode voltages up to ±270 V with a supply of ±15 V, while maintaining a fixed gain of 1. This high common-mode range is the defining feature of the device.
What package and pin configuration do the AD629BRZ-R7 and AD629BR use?
Both devices are offered in an 8-lead SOIC package with the same pinout. The AD629BRZ-R7 is the reeled, lead-free (Z) version, and the AD629BR is the standard tube version; the package footprint and pin functions are identical.
Does the AD629BRZ-R7 meet RoHS requirements while the AD629BR may not?
The "Z" suffix in AD629BRZ-R7 denotes a lead-free, RoHS-compliant package. The AD629BR is the non-Z ordering code and should be checked against the manufacturer's datasheet and ordering guide for its specific compliance status before use in RoHS-restricted designs.
What is the gain and gain error specification of the AD629?
The AD629 provides a fixed gain of 1 V/V. The B-grade version offers tightened gain error compared with the A grade; designers should consult the official Analog Devices datasheet for the exact gain error limit applicable to the B grade.
Which applications are the AD629BRZ-R7 and AD629BR suited for?
Both parts are intended for high common-mode voltage sensing applications such as current sensing in motor control, power supply monitoring, and industrial measurement systems where the common-mode voltage can exceed the supply rails.
How should the AD629BRZ-R7 be handled during PCB assembly compared with the AD629BR?
Because the AD629BRZ-R7 is a lead-free (Z) part, it should be assembled using a lead-free soldering profile per the manufacturer's recommendations. The AD629BR, if a non-lead-free version, may require a different soldering process; verify the moisture sensitivity level and reflow profile from the datasheet for each ordering code.