Part A
AD7983BRMZ
Analog Equipment GmbH.
- Lifecycle
- Active
- Stock
- 4332 PCS
- Package
- MSOP-10
- Series
- Acquisition de données - Convertisseur analogique - numérique (ADC)
Replacement verdict
Compatible functional replacement candidate
The AD7983BRMZ is a viable functional replacement candidate for the AD7980ARMZRL7, sharing the same 16-bit SAR architecture, 10-lead MSOP package, and serial SPI interface, though the lower 1.33 MSPS throughput and reduced analog input range require validation against the target application's sampling and signal-chain requirements.
Resolution and Architecture
High match
Sample Rate
Validation required
Package and Pinout
High match
Analog Input Range
Validation required
Parts at a glance
Part B
AD7980ARMZRL7
Analog Equipment GmbH.
- Lifecycle
- Active
- Stock
- 4200 PCS
- Package
- MSOP-10
- 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 | AD7980ARMZRL7 | AD7983BRMZ | Why it matters |
|---|---|---|---|
| Resolution | 16 bit | 16 bit | Both are 16-bit ADCs, so resolution is identical and not a differentiator for substitutability. |
| Sampling Rate | 1 MSPS | 1.33 MSPS | The AD7983 offers a higher maximum throughput, which matters for applications needing faster conversion rates. |
| Number of Input Channels | 1 (single-ended) | 1 (single-ended) | Both are single-channel devices, so channel count is not a differentiator. |
| Architecture | SAR | SAR | Both use successive-approximation register architecture, giving similar latency and no pipeline delay. |
| Supply Voltage (Analog & Digital) | 2.5 V (2.375 V to 2.625 V) | 2.5 V (2.375 V to 2.625 V) | Identical supply requirements mean the same power rail design can be reused. |
| Interface Type | SPI / QSPI / MICROWIRE / DSP compatible serial | SPI / QSPI / MICROWIRE / DSP compatible serial | Matching serial interfaces allow drop-in digital connectivity with the same host controller. |
| Package / Mounting | 10-Lead MSOP (surface mount) | 10-Lead MSOP (surface mount) | Same package and footprint enable direct PCB replacement without layout changes. |
| Operating Temperature Range | -40 °C to +125 °C | -40 °C to +125 °C | Identical temperature ratings suit the same industrial and harsh-environment applications. |
| Power Consumption (Typical) | 4.0 mW at 1 MSPS | 5.3 mW at 1.33 MSPS | The AD7983 draws more power at its higher throughput, which affects thermal and energy budgets. |
Need help validating a replacement?
Send your BOM and application constraints for technical and sourcing review.
Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | AD7983BRMZ | AD7980ARMZRL7 |
|---|---|---|
| Series | PulSAR® | PulSAR® |
| Part Status | Active | Active |
| Number of Bits | 16 | 16 |
| Sampling Rate(Per Second) | 1.33M | 1M |
| Number of Inputs | 1 | 1 |
| Input Type | Pseudo-Differential | Pseudo-Differential |
| Data Interface | SPI, DSP | SPI, DSP |
| Configuration | S/H-ADC | S/H-ADC |
| Ratio - S / H: ADC | 1:1 | 1:1 |
| Number of A/D Converters | 1 | 1 |
| Architecture | SAR | SAR |
| Reference Type | External | External |
| Voltage - Supply, Analog | 2.375V ~ 2.625V | 2.375V ~ 2.625V |
| Voltage - Supply, Digital | 2.375V ~ 2.625V | 2.375V ~ 2.625V |
| Operating Temperature | -40°C ~ 85°C | -40°C ~ 125°C |
Frequently asked questions
What are the key differences between the AD7980ARMZRL7 and the AD7983BRMZ?
The AD7980ARMZRL7 is a 16-bit, 1 MSPS PulSAR ADC, while the AD7983BRMZ is a 16-bit, 1.33 MSPS PulSAR ADC. Both are successive-approximation ADCs in 10-lead MSOP packages, but the AD7983 offers a higher maximum throughput rate of 1.33 MSPS versus 1 MSPS for the AD7980. The AD7980ARMZRL7 is supplied in tape-and-reel packaging (RL7 suffix), whereas the AD7983BRMZ is a tube/standard packaging variant.
Are the AD7980ARMZRL7 and AD7983BRMZ pin-compatible?
Yes. Both devices are offered in the same 10-lead MSOP (RM) package with the same pinout, which includes VDD, VIO, GND, REF, IN+, IN-, CNV, SDO, SCK, and SDI. This shared pinout allows board designs to accommodate either part, though the higher throughput of the AD7983BRMZ must be validated against the digital interface timing of the host system.
What is the maximum sampling rate of each device?
The AD7980ARMZRL7 supports a maximum throughput of 1 MSPS. The AD7983BRMZ supports a maximum throughput of 1.33 MSPS. Both are 16-bit successive-approximation register (SAR) ADCs with a pseudo-differential input structure.
Do both parts support the same digital interface?
Yes. Both the AD7980ARMZRL7 and AD7983BRMZ use a SPI-compatible serial interface with a separate CNV (convert) input and SDO (serial data out) output, and both support daisy-chain and busy-indicator modes. The interface logic supply (VIO) is separate from the analog supply (VDD) on both devices, allowing direct connection to 1.8 V, 2.5 V, 3 V, or 5 V logic.
What are the analog supply and reference requirements for these ADCs?
Both devices operate from a single analog supply (VDD) of 2.5 V and a separate digital I/O supply (VIO) of 1.8 V to 5 V. The external reference voltage (REF) is applied to the REF pin and sets the full-scale input range; the REF input range is typically 2.5 V to 5 V. Designers should consult the respective datasheets for exact reference and supply tolerances.
Can the AD7983BRMZ be used as a drop-in replacement for the AD7980ARMZRL7?
Because both parts share the same 10-lead MSOP package and pinout, the AD7983BRMZ can be placed on a board designed for the AD7980ARMZRL7. However, the higher 1.33 MSPS throughput of the AD7983BRMZ requires that the host's SPI clock, CNV timing, and acquisition time be verified against the AD7983 datasheet. The AD7980ARMZRL7 cannot replace the AD7983BRMZ in applications that require the full 1.33 MSPS rate.
What are the packaging differences between the AD7980ARMZRL7 and AD7983BRMZ?
The AD7980ARMZRL7 suffix "RL7" indicates tape-and-reel packaging, typically 1,500 units per 7-inch reel, which is suited to automated high-volume assembly. The AD7983BRMZ is supplied in standard tube packaging. Both use the same 10-lead MSOP (RM) body, so the PCB footprint is identical.
Which part should be selected for a 1 MSPS application?
For a design requiring exactly 1 MSPS, the AD7980ARMZRL7 is the appropriate choice and is specified for that maximum rate. The AD7983BRMZ is specified for up to 1.33 MSPS and can also be operated at 1 MSPS, but selecting the AD7980ARMZRL7 avoids paying for unused throughput. Final selection should account for power consumption, availability, and packaging needs.