Part A
AD820BRZ
Công ty Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 5309 PCS
- Package
- SOIC-8
- Series
- Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps
Replacement verdict
Compatible functional replacement candidate
The AD820BRZ and AD820BR-REEL are functionally equivalent single-channel precision operational amplifiers from the same manufacturer, sharing identical die, electrical specifications, and SOIC-8 package. The only meaningful distinction is packaging format: the AD820BRZ is supplied in tube/rail form while the AD820BR-REEL is supplied on tape-and-reel for automated assembly. Either part can serve as a direct functional substitute for the other, with the choice driven by production handling requirements rather than electrical performance.
Amplifier Type and Channel Count
High match
Package and Pinout
High match
Electrical Specifications
High match
Packaging Format
Validation required
Parts at a glance
Part B
AD820BR-REEL
Công ty Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 8281 PCS
- Package
- SOIC-8
- Series
- Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps
Key differences
Rows are prioritized by design impact. Highlighted values require attention during substitution.
Key electrical and mechanical differences between the two devices
| Parameter | AD820BRZ | AD820BR-REEL | Why it matters |
|---|---|---|---|
| Amplifier Type | Single, Precision, JFET Input | Single, Precision, JFET Input | Confirms both parts are the same amplifier topology and input stage, so they are functionally interchangeable in circuit design. |
| Number of Channels | 1 | 1 | Channel count must match for direct substitution in a single-amplifier circuit. |
| Supply Voltage Range | 4.5 V to 36 V (±2.25 V to ±18 V) | 4.5 V to 36 V (±2.25 V to ±18 V) | Identical supply range ensures the part operates correctly in the same power rail configuration. |
| Input Offset Voltage (max) | 0.8 mV | 0.8 mV | Offset voltage grade (B grade) determines DC accuracy; matching values confirm equivalent precision grade. |
| Gain Bandwidth Product | 1.8 MHz | 1.8 MHz | GBW sets the achievable closed-loop bandwidth; identical values mean the same AC performance. |
| Input Bias Current | 2 pA (typ) | 2 pA (typ) | Very low JFET input bias current is critical for high-impedance sensor and precision applications; matching values confirm equivalent input characteristics. |
| Operating Temperature Range | -40 °C to +85 °C | -40 °C to +85 °C | Same temperature range ensures both parts meet the same environmental requirements. |
| Package / Mounting | 8-Lead SOIC (tube) | 8-Lead SOIC (tape and reel) | The die and package are identical; only the shipping/packaging format differs, which affects assembly line feeding but not electrical function. |
| Packaging / Ordering Format | Tube | Tape & Reel | Determines how the parts are supplied for automated pick-and-place versus manual handling; the only meaningful difference between these two orderable part numbers. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | AD820BRZ | AD820BR-REEL |
|---|---|---|
| Supplier | - | Analog Devices Inc. |
| Part Status | Active | Obsolete |
| Amplifier Type | J-FET | J-FET |
| Number of Circuits | 1 | 1 |
| Output Type | Rail-to-Rail | Rail-to-Rail |
| Slew Rate | 3V/µs | 3V/µs |
| Gain Bandwidth Product | 1.9 MHz | 1.8 MHz |
| -3 dB Bandwidth | - | 1.9 MHz |
| Current - Input Bias | 2 pA | 2 pA |
| Voltage - Input Offset | 300 µV | 300 µV |
| Supply Current | 700µA | 700µA |
| Current - Output / Channel | 20 mA | 20 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 key differences between the AD820BRZ and AD820BR-REEL?
The AD820BRZ and AD820BR-REEL are the same precision operational amplifier die in the same 8-lead SOIC package; the difference is packaging format. The AD820BRZ is supplied in tube/rail packaging, while the AD820BR-REEL is supplied on tape-and-reel for automated assembly. Both share identical electrical specifications, grade (B), and temperature range.
Are the AD820BRZ and AD820BR-REEL electrically identical?
Yes. Both are the B-grade of the AD820 single precision op amp and share the same datasheet specifications, including low input offset voltage, low input bias current, and rail-to-rail output. The suffix difference (Z vs -REEL) denotes packaging, not electrical grade or performance.
What package do the AD820BRZ and AD820BR-REEL use?
Both parts are offered in an 8-lead SOIC package (often designated SOIC_N or R-8). The AD820BRZ is the tube-packaged version, and the AD820BR-REEL is the tape-and-reel version of the same 8-lead SOIC device.
Can the AD820BR-REEL be used as a drop-in replacement for the AD820BRZ?
Yes, from an electrical and footprint standpoint they are interchangeable because they are the same device in the same 8-lead SOIC package. The only practical difference is the delivery format, so the choice depends on whether your assembly process uses tape-and-reel or tube/rail feeding.
Which part should be selected for high-volume automated assembly?
The AD820BR-REEL is the appropriate choice for high-volume automated pick-and-place assembly because it is supplied on tape-and-reel, which is compatible with standard SMT feeders. The AD820BRZ in tube/rail packaging is typically used for prototyping, low-volume, or manual assembly.
Do the AD820BRZ and AD820BR-REEL differ in temperature range or grade?
No. Both are B-grade devices and are specified over the same industrial temperature range as defined in the AD820 datasheet. The packaging suffix does not change the grade or the specified operating temperature range.
What does the "Z" suffix on the AD820BRZ indicate?
The "Z" suffix denotes the lead-free (RoHS-compliant) package finish per Analog Devices' part numbering convention. The AD820BR-REEL is likewise a lead-free, RoHS-compliant tape-and-reel variant of the same device.