Part A
AD629BRZ
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 3376 Stückzahl
- Package
- SOIC-8
- Series
- Linear-Verstärker.Instrumentation, OP-Verstärker, Pufferverstärker
Replacement verdict
Compatible functional replacement candidate
The AD629BRZ and AD629BR-REEL7 are functionally identical, differing only in packaging format. Both are the same AD629 difference amplifier die in an 8-lead SOIC package with identical electrical specifications, making them fully interchangeable for design and qualification purposes. The only practical distinction is the delivery form: AD629BRZ is supplied in tube/rail packaging, while AD629BR-REEL7 is supplied on a 7-inch tape-and-reel for automated assembly. Selection should be driven by the production line's feeding method rather than by any performance consideration.
Amplifier Function and Topology
High match
Package and Pinout
High match
Electrical Specifications
High match
Packaging and Delivery Form
High match
Parts at a glance
Part B
AD629BR-REEL7
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 8560 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 | AD629BRZ | AD629BR-REEL7 | Why it matters |
|---|---|---|---|
| Amplifier Type | Differential Amplifier | Differential Amplifier | Confirms both parts perform the same core function, enabling functional substitutability. |
| Number of Circuits | 1 | 1 | Single-channel configuration must match for direct replacement in a circuit. |
| Gain Bandwidth Product | 1 MHz | 1 MHz | Determines the frequency range over which the amplifier maintains useful gain. |
| Input Offset Voltage | 1 mV (max) | 1 mV (max) | Low offset is critical for accurate DC differential signal measurement. |
| Common Mode Rejection Ratio (CMRR) | 77 dB (min) | 77 dB (min) | High CMRR ensures rejection of common-mode noise in differential sensing applications. |
| Supply Voltage Range | ±2.5 V to ±18 V | ±2.5 V to ±18 V | Must match the system power rails for compatible operation. |
| Operating Temperature Range | -40°C to +85°C | -40°C to +85°C | Ensures both parts meet the environmental requirements of the target application. |
| Package / Case | 8-SOIC | 8-SOIC | Identical footprint allows drop-in replacement on the same PCB pad layout. |
| Packaging / Mounting Format | Tube | Tape & Reel | Packaging differs for automated assembly versus manual handling, but the device itself is functionally identical. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | AD629BRZ | AD629BR-REEL7 |
|---|---|---|
| Supplier | - | 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 is the difference between AD629BRZ and AD629BR-REEL7?
Both are the same AD629 high common-mode voltage difference amplifier in an 8-lead SOIC package with a B-grade specification. The AD629BRZ is supplied in tube packaging, while the AD629BR-REEL7 is supplied in 7-inch tape-and-reel packaging for automated assembly. The electrical specifications are identical.
Are AD629BRZ and AD629BR-REEL7 electrically interchangeable?
Yes. Both parts share the same die, grade, and 8-lead SOIC footprint, so they are electrically and functionally interchangeable. The only difference is the shipping packaging format.
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 makes it suitable for high-voltage current-sensing and industrial applications.
What is the gain of the AD629BRZ and AD629BR-REEL7?
Both parts provide a fixed differential gain of 1 V/V. The gain is internally set and does not require external resistors.
What package do AD629BRZ and AD629BR-REEL7 use?
Both parts are offered in an 8-lead SOIC package (R-8 suffix). The package dimensions and pinout are identical, allowing the same PCB land pattern to be used for either part.
Which part should be selected for high-volume automated assembly?
The AD629BR-REEL7 is supplied in 7-inch tape-and-reel format, which is compatible with automated pick-and-place assembly. The AD629BRZ in tube packaging is typically used for prototyping or low-volume manual assembly.
What are the key specifications of the AD629 B-grade?
The AD629BRZ and AD629BR-REEL7 are B-grade devices offering low offset voltage, low offset voltage drift, and high common-mode rejection. They operate from ±2.5 V to ±18 V dual supplies and are specified over the industrial temperature range.