Part A
AD620BR
テキサス・インスツルメンツ
- Lifecycle
- Active
- Stock
- 4160 個数
- Package
- SOIC-8
- Series
- リニアアンプ - 計装用、オペアンプ、バッファアンプ
Replacement verdict
Compatible functional replacement candidate
The AD620BRZ-R7 and AD620BR are functionally equivalent instrumentation amplifiers sharing the same core specifications, package, and pinout, making them interchangeable in most designs. The primary distinction lies in the RoHS-compliant Z-grade designation and tape-and-reel packaging of the AD620BRZ-R7 versus the tube packaging of the AD620BR, which should be validated against your assembly and compliance requirements.
Amplifier Type and Gain Range
High match
Package Type and Pinout
High match
Supply Voltage and Power Consumption
High match
RoHS Compliance and Packaging
Validation required
Parts at a glance
Part B
AD620BRZ-R7
テキサス・インスツルメンツ
- Lifecycle
- Active
- Stock
- 2808 個数
- Package
- SOIC-8
- Series
- リニアアンプ - 計装用、オペアンプ、バッファアンプ
Key differences
Rows are prioritized by design impact. Highlighted values require attention during substitution.
Key electrical and mechanical differences between the two devices
| Parameter | AD620BRZ-R7 | AD620BR | Why it matters |
|---|---|---|---|
| Number of Channels | 1 | 1 | Both are single-channel instrumentation amplifiers, so channel count is functionally equivalent. |
| Gain Bandwidth Product | 1 MHz | 1 MHz | Determines the maximum frequency at which the amplifier can provide useful gain; identical bandwidth supports direct substitution. |
| Input Offset Voltage (max) | 50 µV | 50 µV | Low offset voltage is critical for precision amplification of small differential signals; matching values preserve accuracy. |
| Input Bias Current (max) | 1 nA | 1 nA | Low bias current minimizes errors in high-impedance sensor interfaces; identical values ensure equivalent performance. |
| Gain Range | 1 to 10000 | 1 to 10000 | Defines the programmable gain span via a single resistor; identical range supports the same circuit designs. |
| Supply Voltage Range | ±2.3 V to ±18 V | ±2.3 V to ±18 V | Determines compatibility with the system power rails; identical range allows drop-in replacement. |
| CMRR (min, G=10) | 100 dB | 100 dB | Common-mode rejection ratio affects noise immunity in differential measurement; matching values ensure equivalent signal integrity. |
| Operating Temperature Range | -40 °C to +85 °C | -40 °C to +85 °C | Defines the environmental envelope for reliable operation; identical ratings support the same application conditions. |
| Package / Mounting | 8-SOIC (tape and reel) | 8-SOIC (tube) | Packaging format differs (reel vs tube) which affects assembly line handling, but the SOIC footprint is identical for PCB compatibility. |
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Send your BOM and application constraints for technical and sourcing review.
Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | AD620BR | AD620BRZ-R7 |
|---|---|---|
| Part Status | Obsolete | Active |
| Amplifier Type | Instrumentation | Instrumentation |
| Number of Circuits | 1 | 1 |
| Slew Rate | 1.2V/µs | 1.2V/µs |
| -3 dB Bandwidth | 1 MHz | 1 MHz |
| Current - Input Bias | 500 pA | 500 pA |
| Voltage - Input Offset | 15 µV | 15 µV |
| Supply Current | 900µA | 900µA |
| Current - Output / Channel | 18 mA | 18 mA |
| Voltage - Supply Span(Min) | 4.6 V | 4.6 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 AD620BRZ-R7 and the AD620BR?
Both parts are based on the same AD620 instrumentation amplifier core from Analog Devices and share identical electrical specifications, including a gain range of 1 to 10,000 set by a single external resistor, a maximum input offset voltage of 50 µV, a maximum input offset drift of 0.6 µV/°C, and a minimum CMRR of 100 dB (G = 10). The primary differences are packaging and ordering format: the AD620BRZ-R7 is supplied in a 7-inch tape-and-reel (R7) for automated assembly, while the AD620BR is supplied in a standard tube/rail format. Both use the same 8-lead SOIC package (R suffix) and the Z suffix indicates RoHS-compliant, lead-free construction for the AD620BRZ-R7.
Are the AD620BRZ-R7 and AD620BR electrically interchangeable?
Yes. Both devices are grade-B AD620 instrumentation amplifiers in the same 8-lead SOIC package with identical pinout and specified performance over the same temperature range. The only practical distinction is the shipping container (tape-and-reel vs. tube), so they can be used interchangeably in the same PCB footprint, provided the assembly process matches the packaging format.
What is the gain-setting method for these devices?
Gain is programmed with a single external resistor connected between pins 1 and 8. The gain equation is G = (49.4 kΩ / RG) + 1, allowing gains from 1 (RG open) up to 10,000. This applies identically to both the AD620BRZ-R7 and the AD620BR.
What are the supply voltage and quiescent current specifications?
Both parts operate from dual supplies of ±2.3 V to ±18 V (or a single supply of 4.6 V to 36 V). Maximum supply current is 1.3 mA over the specified temperature range, making them suitable for low-power precision signal conditioning.
Do the AD620BRZ-R7 and AD620BR meet the same precision specifications?
Yes. Both are B-grade devices with a maximum input offset voltage of 50 µV, maximum input offset drift of 0.6 µV/°C, maximum input bias current of 1.0 nA, and minimum CMRR of 100 dB at G = 10. Noise performance is also identical, with 9 nV/√Hz input voltage noise at 1 kHz and 0.28 µV p-p noise from 0.1 Hz to 10 Hz.
Which part should be selected for high-volume automated PCB assembly?
The AD620BRZ-R7 is the appropriate choice for automated pick-and-place lines because it is supplied in 7-inch tape-and-reel packaging. The AD620BR in tube packaging is better suited to low-volume prototyping or manual assembly.
Are both parts RoHS compliant?
The AD620BRZ-R7 carries the Z suffix, which denotes RoHS-compliant, lead-free construction. The AD620BR is the non-Z ordering code and should be verified against the specific manufacturer datasheet and ordering guide for its compliance status before use in RoHS-restricted designs.