Part A
AD7790BRMZ
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 1513 Stückzahl
- Package
- MSOP-10
- Series
- Datenerfassung mit Analog to Digital Converters (ADC)
Replacement verdict
Compatible functional replacement candidate
The AD7790BRMZ and AD7790BRM are functionally equivalent 16-bit sigma-delta ADCs from the same AD7790 family, sharing identical core specifications including resolution, channel count, supply voltage range, and serial interface. The primary distinction lies in the package and ordering suffix, where the BRMZ designation denotes RoHS-compliant packaging. Both parts are suitable for low-power precision measurement applications, though designers should confirm RoHS compliance requirements and verify package-level thermal and assembly considerations before finalizing the replacement.
Resolution and Accuracy
High match
Package Type
High match
Supply Voltage Range
High match
RoHS Compliance
Validation required
Parts at a glance
Part B
AD7790BRM
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 7017 Stückzahl
- Package
- MSOP-10
- Series
- Datenerfassung mit Analog to Digital Converters (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 | AD7790BRMZ | AD7790BRM | Why it matters |
|---|---|---|---|
| Resolution | 16 bit | 16 bit | Determines the smallest signal change the ADC can resolve; identical resolution means equivalent measurement precision. |
| Number of Channels | 1 (single-ended/differential) | 1 (single-ended/differential) | Defines how many analog inputs can be measured; matching channel count ensures the same input flexibility. |
| Sampling Rate | 4.17 SPS to 120 SPS | 4.17 SPS to 120 SPS | Sets the maximum update rate for conversions; identical rates mean the same throughput capability. |
| Interface Type | SPI (3-wire) | SPI (3-wire) | Determines how the ADC connects to a host controller; matching interface ensures drop-in digital compatibility. |
| Supply Voltage | 2.7 V to 5.25 V | 2.7 V to 5.25 V | Defines the operating power range; identical ranges allow use in the same system power rails. |
| Package / Mounting | 10-Lead MSOP (surface mount) | 10-Lead MSOP (surface mount) | Affects PCB footprint and assembly; matching package means the same board layout can be used. |
| Operating Temperature Range | -40 °C to +105 °C | -40 °C to +85 °C | Determines the environments where the part is guaranteed to operate; the wider range of the BRMZ version offers more thermal margin. |
| RoHS / Lead-Free Status | RoHS compliant, lead-free | Non-RoHS, contains lead | Affects regulatory compliance and solder process compatibility; the BRMZ is lead-free while the BRM is not. |
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 | AD7790BRMZ | AD7790BRM |
|---|---|---|
| Supplier | - | Analog Devices Inc.,Rochester Electronics, LLC |
| Part Status | Active | Obsolete |
| Number of Bits | 16 | 16 |
| Sampling Rate(Per Second) | 120 | 120 |
| Number of Inputs | 1 | 1 |
| Input Type | Differential | Differential |
| Data Interface | SPI, DSP | SPI, DSP |
| Configuration | ADC | ADC |
| Number of A/D Converters | 1 | 1 |
| Architecture | Sigma-Delta | Sigma-Delta |
| Reference Type | External | External |
| Voltage - Supply, Analog | 2.5V ~ 5.25V | 2.5V ~ 5.25V |
| Voltage - Supply, Digital | 2.5V ~ 5.25V | 2.5V ~ 5.25V |
| Features | PGA | PGA |
| Operating Temperature | -40°C ~ 105°C | -40°C ~ 105°C |
Frequently asked questions
What is the difference between the AD7790BRMZ and the AD7790BRM?
The AD7790BRMZ and AD7790BRM are functionally identical 16-bit sigma-delta ADCs from Analog Devices. The only difference is the package/ordering suffix: the "Z" suffix in AD7790BRMZ denotes RoHS-compliant lead-free construction, while the AD7790BRM is the non-RoHS (leaded) version. Both are supplied in a 10-lead MSOP package.
Are the AD7790BRMZ and AD7790BRM pin-compatible?
Yes. Both devices use the same 10-lead MSOP package with identical pin assignments, so they are pin-compatible and share the same PCB land pattern.
Can the AD7790BRMZ be used as a direct replacement for the AD7790BRM?
Yes, from a functional and footprint standpoint they are interchangeable. The AD7790BRMZ is the RoHS-compliant equivalent of the AD7790BRM, so it can replace the non-RoHS part in existing designs, subject to the assembly process being compatible with lead-free (RoHS) soldering.
What are the key specifications common to both the AD7790BRMZ and AD7790BRM?
Both are 16-bit sigma-delta ADCs with a single differential input channel, an on-chip low-noise programmable gain amplifier (PGA), and an SPI-compatible serial interface. They operate from a 2.7 V to 5.25 V supply and are specified for the −40 °C to +105 °C temperature range.
Does the "Z" suffix affect electrical performance?
No. The "Z" suffix indicates RoHS compliance (lead-free) and does not change the electrical specifications. The AD7790BRMZ and AD7790BRM share the same datasheet performance parameters.
Which part should be selected for a new RoHS-compliant design?
The AD7790BRMZ should be selected for new designs requiring RoHS compliance, as it is the lead-free, RoHS-compliant version. The AD7790BRM (non-RoHS) is generally intended for legacy or exempt applications.
Are both parts available in the same package type?
Yes. Both the AD7790BRMZ and AD7790BRM are offered in a 10-lead MSOP package, so package dimensions and thermal characteristics are the same.