Part A
AD7683BRMZRL7
Analog Equipment GmbH.
- Lifecycle
- Active
- Stock
- 6941 PCS
- Package
- MSOP-8
- Series
- Acquisition de données - Convertisseur analogique - numérique (ADC)
Replacement verdict
Compatible functional replacement candidate
The AD7683BRMZRL7 and AD7683ARM share the same 16-bit SAR ADC core, pseudo-differential input architecture, and 100 kSPS throughput, making them functionally interchangeable in most designs. The primary distinction is the operating temperature range and package finish, so the AD7683ARM serves as a viable replacement where the narrower industrial temperature window and standard MSOP configuration are acceptable.
Resolution and Throughput
High match
Input Architecture
High match
Package Type
High match
Operating Temperature Range
Validation required
Parts at a glance
Part B
AD7683ARM
Analog Equipment GmbH.
- Lifecycle
- Active
- Stock
- 3371 PCS
- Package
- TSSOP-8
- Series
- Acquisition de données - Convertisseur analogique - numérique (ADC)
Key differences
Rows are prioritized by design impact. Highlighted values require attention during substitution.
Key electrical and mechanical differences between the two devices
| Parameter | AD7683BRMZRL7 | AD7683ARM | Why it matters |
|---|---|---|---|
| Resolution | 16 bit | 16 bit | Both converters provide 16-bit resolution, so measurement precision is equivalent. |
| Sampling Rate | 100 kSPS | 100 kSPS | Identical throughput allows the same signal bandwidth and timing budget in the application. |
| Number of Input Channels | 1 (single-ended) | 1 (single-ended) | Both are single-channel ADCs, so channel count does not affect substitutability. |
| Interface Type | SPI / DSP serial (3-wire) | SPI / DSP serial (3-wire) | Matching serial interfaces allow drop-in replacement without firmware changes. |
| Supply Voltage (Analog & Digital) | 2.7 V to 5.5 V | 2.7 V to 5.5 V | Same supply range means the same power rail design can be reused. |
| Package / Mounting | 10-Lead MSOP (RM), Surface Mount | 10-Lead MSOP (RM), Surface Mount | Identical package and footprint enable direct board-level substitution. |
| Operating Temperature Range | -40 °C to +85 °C | -40 °C to +85 °C | Same temperature rating ensures equivalent environmental robustness. |
| Packaging / Ordering Format | Tape & Reel (RL7) | Tube / Tray | Different shipping formats affect assembly line handling and inventory, though the die is functionally the same. |
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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 | AD7683BRMZRL7 | AD7683ARM |
|---|---|---|
| Supplier | - | Rochester Electronics, LLC |
| Series | PulSAR® | PulSAR® |
| Part Status | Active | Obsolete |
| Number of Bits | 16 | 16 |
| Sampling Rate(Per Second) | 100k | 100k |
| Data Interface | SPI, DSP | SPI, DSP |
| Number of A/D Converters | 1 | 1 |
| Operating Temperature | -40°C ~ 85°C | -40°C ~ 85°C |
| Number of Inputs | 1 | - |
| Input Type | Pseudo-Differential | - |
| Configuration | S/H-ADC | - |
| Ratio - S / H: ADC | 1:1 | - |
| Architecture | SAR | - |
| Reference Type | External | - |
| Voltage - Supply, Analog | 2.7V ~ 5.5V | - |
| Voltage - Supply, Digital | 2.7V ~ 5.5V | - |
Frequently asked questions
What are the key differences between the AD7683BRMZRL7 and the AD7683ARM?
Both are 16-bit, 100 kSPS PulSAR analog-to-digital converters from Analog Devices in 8-lead MSOP packages. The primary difference is the grade: the AD7683BRMZRL7 is a B-grade device specified over the −40°C to +85°C industrial temperature range and supplied in tape-and-reel packaging (RL7 suffix), while the AD7683ARM is an A-grade device specified over the −40°C to +85°C range in tube packaging. The B grade offers tighter guaranteed linearity and accuracy specifications than the A grade per the respective datasheet grade tables.
Are the AD7683BRMZRL7 and AD7683ARM pin-compatible?
Yes. Both parts are offered in the same 8-lead MSOP (RM) package with an identical pinout, so they are pin-compatible and share the same PCB land pattern.
Do the AD7683BRMZRL7 and AD7683ARM have the same resolution and throughput?
Yes. Both devices are 16-bit successive-approximation ADCs with a maximum throughput of 100 kSPS and a pseudo-differential input configuration, as specified in the AD7683 datasheet.
How do the accuracy specifications differ between the B grade and A grade?
The B grade (AD7683BRMZRL7) is specified with tighter integral nonlinearity (INL) and offset/gain error limits than the A grade (AD7683ARM). Designers should consult the grade-specific specification tables in the AD7683 datasheet to confirm the exact limits for the chosen grade.
What is the difference in packaging between the AD7683BRMZRL7 and AD7683ARM?
The AD7683BRMZRL7 is supplied in tape-and-reel format (RL7 suffix), which is suited to automated high-volume assembly. The AD7683ARM is supplied in standard tube packaging. Both use the same 8-lead MSOP body.
Can the AD7683ARM be used as a drop-in replacement for the AD7683BRMZRL7?
Because both share the same package, pinout, resolution, and throughput, the A grade can physically and functionally replace the B grade in many designs. However, the A grade has looser guaranteed accuracy specifications, so the replacement is only acceptable if the system's error budget is met by the A-grade limits documented in the datasheet.
Do both parts support the same digital interface and reference configuration?
Yes. Both the AD7683BRMZRL7 and AD7683ARM use the same serial interface compatible with SPI/QSPI/MICROWIRE/DSP and share the same external reference and supply requirements as defined in the AD7683 datasheet.