Part A
AD7732BRUZ
Công ty Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 6723 PCS
- Package
- TSSOP-28
- Series
- Data Acquisition - Analog to Digital Converters (ADC)
Replacement verdict
Compatible functional replacement candidate
The AD7732BRUZ and AD7732BRU are functionally equivalent signal-conditioning ADCs, with the BRUZ suffix denoting the RoHS-compliant package variant of the same AD7732 device. Both share identical core architecture, channel configuration, resolution, and interface, making the BRUZ a suitable functional replacement for the BRU in most designs, subject to confirming RoHS and moisture-sensitivity requirements against the original BRU specification.
Resolution and Architecture
High match
Channel Count and Input Type
High match
Package and Pinout
High match
RoHS and Environmental Compliance
Validation required
Key differences
Rows are prioritized by design impact. Highlighted values require attention during substitution.
Key electrical and mechanical differences between the two devices
| Parameter | AD7732BRUZ | AD7732BRU | Why it matters |
|---|---|---|---|
| Number of Channels | 2 | 2 | Determines how many analog input signals the ADC can digitize simultaneously; must match the application's channel count. |
| Resolution | 24 bit | 24 bit | Sets the finest signal increment the ADC can resolve; critical for high-precision measurement applications. |
| Sampling Rate | Up to 15.4 kSPS | Up to 15.4 kSPS | Defines the maximum conversion throughput; must satisfy the bandwidth requirements of the measured signal. |
| Input Type | Differential | Differential | Differential inputs improve noise rejection and are required for certain sensor and bridge interfaces. |
| Supply Voltage | 5 V (analog and digital) | 5 V (analog and digital) | Must be compatible with the system power rails to avoid level shifting or additional regulation. |
| Interface | SPI / Serial | SPI / Serial | Determines compatibility with the host microcontroller's communication bus and firmware. |
| Package / Mounting | 24-TSSOP (Surface Mount) | 24-TSSOP (Surface Mount) | Footprint and mounting style must match the PCB layout for a drop-in replacement. |
| RoHS Compliance | RoHS Compliant (lead-free) | Non-RoHS (contains lead) | RoHS status affects regulatory compliance and solder process selection; the "Z" suffix denotes the lead-free variant. |
| Operating Temperature Range | -40 °C to +105 °C | -40 °C to +105 °C | Must cover the ambient conditions of the target application; both variants share the same industrial range. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | AD7732BRUZ | AD7732BRU |
|---|---|---|
| Supplier | - | Analog Devices Inc.,Rochester Electronics, LLC |
| Part Status | Active | Obsolete |
| Number of Bits | 24 | 24 |
| Sampling Rate(Per Second) | 15.4k | 15.4k |
| Number of Inputs | 2 | 2 |
| Input Type | Differential | Differential |
| Data Interface | SPI, DSP | SPI, DSP |
| Configuration | MUX-ADC | MUX-ADC |
| Number of A/D Converters | 1 | 1 |
| Architecture | Sigma-Delta | Sigma-Delta |
| Reference Type | External | External |
| Voltage - Supply, Analog | 5V | 5V |
| Voltage - Supply, Digital | 2.7V ~ 3.6V, 5V | 2.7V ~ 3.6V, 5V |
| Operating Temperature | -40°C ~ 105°C | -40°C ~ 105°C |
Frequently asked questions
What is the difference between the AD7732BRUZ and the AD7732BRU?
The AD7732BRUZ and AD7732BRU are both 24-bit, 2-channel sigma-delta ADCs from Analog Devices in a 28-lead TSSOP package. The primary difference is the suffix: the "Z" designation in AD7732BRUZ indicates RoHS-compliant, lead-free construction, while the AD7732BRU is the non-RoHS (leaded) version. Both share the same functional specifications and are electrically equivalent.
Are the AD7732BRUZ and AD7732BRU functionally interchangeable?
Yes. Both parts are functionally identical 24-bit sigma-delta ADCs with the same pinout, package (28-lead TSSOP), and electrical specifications. The only difference is the RoHS/lead-free compliance status. They can be interchanged in designs where RoHS compliance is not a constraint, but the AD7732BRUZ is preferred for new designs requiring lead-free compliance.
What are the key specifications of the AD7732?
The AD7732 is a 24-bit, 2-channel, sigma-delta analog-to-digital converter with a programmable gain amplifier (PGA), offering a resolution of 24 bits and a maximum data rate of 15.4 kSPS. It operates from a single 5 V analog supply and a 2.7 V to 3.6 V digital supply, and is specified over the -40°C to +105°C temperature range. It is housed in a 28-lead TSSOP package.
Is the AD7732BRUZ RoHS compliant?
Yes. The "Z" suffix in AD7732BRUZ denotes RoHS compliance and lead-free construction, per Analog Devices' part numbering convention. The AD7732BRU, lacking the Z suffix, is the non-RoHS version containing lead in its termination finish.
Can the AD7732BRUZ be used as a drop-in replacement for the AD7732BRU?
Yes, in terms of form, fit, and function, the AD7732BRUZ is a drop-in replacement for the AD7732BRU because both share the same 28-lead TSSOP package, pinout, and electrical specifications. The substitution is valid provided the application does not require the leaded (non-RoHS) finish of the AD7732BRU.
What is the operating temperature range for both the AD7732BRUZ and AD7732BRU?
Both the AD7732BRUZ and AD7732BRU are specified over the industrial temperature range of -40°C to +105°C, consistent with the AD7732 datasheet specifications.
Which part should be selected for a new lead-free design?
The AD7732BRUZ should be selected for new designs requiring RoHS compliance and lead-free assembly. The AD7732BRU is the non-RoHS variant and is generally not recommended for new designs subject to RoHS or lead-free manufacturing requirements.