Part A
AD7923BRUZ
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 1788 PCS
- Package
- TSSOP-16
- Series
- Acquisição de dados - Analogo para Convertedores Digitais (ADC)
Replacement verdict
Compatible functional replacement candidate
The AD7923SRU-EP is a functionally compatible candidate for the AD7923BRUZ, sharing the same 12-bit SAR ADC architecture, 4-channel multiplexer, and TSSOP-16 footprint. The primary distinction is the enhanced screening and extended temperature range of the EP variant, which requires validation against the target application's environmental and qualification requirements before substitution.
Resolution and Architecture
High match
Package and Pinout
High match
Operating Temperature Range
Validation required
Screening and Qualification Level
Validation required
Parts at a glance
Part B
AD7923SRU-EP
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 7540 PCS
- Package
- TSSOP-16
- Series
- Acquisição de dados - Analogo para Convertedores Digitais (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 | AD7923BRUZ | AD7923SRU-EP | Why it matters |
|---|---|---|---|
| Resolution | 12 bit | 12 bit | Both converters provide the same 12-bit resolution, so measurement granularity is identical. |
| Number of Channels | 4 (single-ended) | 4 (single-ended) | Matching channel count ensures the same number of analog inputs can be sampled. |
| Sampling Rate | 200 kSPS | 200 kSPS | Identical throughput supports the same signal bandwidth and timing requirements. |
| Supply Voltage | 2.7 V to 5.25 V | 2.7 V to 5.25 V | Same supply range allows drop-in use in the same power architecture. |
| Interface | SPI / QSPI / MICROWIRE / DSP compatible | SPI / QSPI / MICROWIRE / DSP compatible | Identical serial interface ensures firmware and bus compatibility. |
| Package / Case | 16-TSSOP | 16-TSSOP | Same package footprint enables direct PCB replacement without layout changes. |
| Operating Temperature Range | -40 °C to +85 °C | -55 °C to +125 °C | The extended temperature range of the EP version matters for harsh-environment and military applications. |
| Product Grade / Screening | Standard commercial/industrial grade | Enhanced Product (EP) grade | EP grade implies additional qualification and screening for reliability-critical applications. |
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 | AD7923BRUZ | AD7923SRU-EP |
|---|---|---|
| Supplier | - | Analog Devices Inc.,Rochester Electronics, LLC |
| Part Status | Active | Obsolete |
| Number of Bits | 12 | 12 |
| Sampling Rate(Per Second) | 200k | 200k |
| Number of Inputs | 4 | 4 |
| Input Type | Single Ended | Single Ended |
| Data Interface | SPI, DSP | SPI, DSP |
| Configuration | MUX-S/H-ADC | MUX-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 | 2.7V ~ 5.25V | 2.7V ~ 5.25V |
| Voltage - Supply, Digital | 2.7V ~ 5.25V | 2.7V ~ 5.25V |
| Operating Temperature | -40°C ~ 125°C | -40°C ~ 125°C |
Frequently asked questions
What are the key differences between the AD7923BRUZ and the AD7923SRU-EP?
Both devices are 4-channel, 12-bit successive-approximation ADCs with a serial interface, but they differ in grade and qualification. The AD7923BRUZ is the standard industrial-grade version in a 16-lead TSSOP, specified over the −40°C to +85°C temperature range. The AD7923SRU-EP is an enhanced-product (EP) variant with controlled manufacturing and is specified over the extended −55°C to +125°C range, making it suitable for harsher environments.
Are the AD7923BRUZ and AD7923SRU-EP pin-compatible?
Yes. Both parts are offered in the same 16-lead TSSOP (RU-16) package and share the same pinout, so they are pin-compatible. However, the AD7923SRU-EP's extended temperature rating should be verified against the target application's thermal requirements before substitution.
Do the AD7923BRUZ and AD7923SRU-EP have the same resolution and throughput?
Yes. Both are 12-bit ADCs with a maximum throughput rate of 200 kSPS and support four single-ended input channels (or two pseudo-differential inputs) with a 0 V to VREF input range. The core conversion performance is the same across both variants.
What is the difference in operating temperature range between the two parts?
The AD7923BRUZ is specified for the −40°C to +85°C industrial temperature range. The AD7923SRU-EP is specified for the extended −55°C to +125°C range, which is the primary reason to select the EP variant for military, aerospace, or other harsh-environment designs.
Can the AD7923SRU-EP be used as a drop-in replacement for the AD7923BRUZ?
Electrically and mechanically, the AD7923SRU-EP is a drop-in replacement in the same 16-lead TSSOP footprint with the same serial interface and reference requirements. The substitution should be validated against the design's temperature, qualification, and sourcing requirements, since the EP variant is intended for extended-temperature and controlled-manufacturing applications.
What is the difference between the "B" and "S" grade designations?
The "B" grade (AD7923BRUZ) denotes the standard industrial temperature grade. The "S" grade with "EP" suffix (AD7923SRU-EP) denotes an enhanced-product variant with extended temperature specification and controlled manufacturing/qualification flow. Designers should consult the respective datasheets for the exact qualification and screening details.
Do both parts support the same serial interface and reference voltage?
Yes. Both devices use a SPI/QSPI/MICROWIRE/DSP-compatible serial interface and operate from a single 2.7 V to 5.25 V supply with an external reference (VREF) that sets the full-scale input range. The digital timing and reference requirements are common to both variants.