Part A
AD7228ACR
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 3193 PCS
- Package
- SOIC-24
- Series
- Acquisição de dados - Convertedores digitais para analógicos (DAC)
Replacement verdict
Compatible functional replacement candidate
The AD7228ACRZ and AD7228ACR are functionally equivalent octal 8-bit voltage-output DACs sharing the same core architecture, resolution, and package family, with the primary distinction being the RoHS-compliant Z suffix on the AD7228ACRZ. Designers can treat the AD7228ACRZ as a direct functional substitute for the AD7228ACR in existing and new designs, subject to confirming the exact package and grade suffix against the target bill of materials.
Resolution and DAC Architecture
High match
Package Type
High match
RoHS Compliance
Validation required
Operating Temperature Range
High match
Parts at a glance
Part B
AD7228ACRZ
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 2789 PCS
- Package
- SOIC-24
- Series
- Acquisição de dados - Convertedores digitais para analógicos (DAC)
Key differences
Rows are prioritized by design impact. Highlighted values require attention during substitution.
Key electrical and mechanical differences between the two devices
| Parameter | AD7228ACRZ | AD7228ACR | Why it matters |
|---|---|---|---|
| Number of DAC Channels | 8 | 8 | Determines how many independent analog outputs the device can drive; must match for functional substitutability. |
| DAC Resolution | 8 bits | 8 bits | Sets the output granularity and accuracy; identical resolution ensures equivalent analog performance. |
| Supply Voltage (VDD) | 12 V to 15 V | 12 V to 15 V | Defines the operating power rail; matching ranges allow drop-in replacement in the same circuit. |
| Output Voltage Range | 0 V to VDD (unipolar) | 0 V to VDD (unipolar) | Determines the analog output span; identical range ensures the same signal scaling in the application. |
| Digital Interface | Parallel, 8-bit | Parallel, 8-bit | Defines how the host writes data to the DAC; matching interface allows reuse of the same control logic. |
| Package / Mounting | 28-Lead SOIC (surface mount) | 28-Lead SOIC (surface mount) | Must match for physical board compatibility and solder reflow profile. |
| RoHS Compliance | RoHS compliant (lead-free) | Non-RoHS (contains lead) | Affects regulatory compliance and manufacturing process; the Z suffix denotes the lead-free variant. |
| Operating Temperature Range | -40 °C to +85 °C | -40 °C to +85 °C | Ensures reliable operation across the application's environmental conditions. |
| Settling Time | 5 µs (typical) | 5 µs (typical) | Determines how fast the output reaches its final value; matching timing preserves dynamic response. |
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 | AD7228ACR | AD7228ACRZ |
|---|---|---|
| Part Status | Obsolete | Active |
| Number of Bits | 8 | 8 |
| Number of D/A Converters | 8 | 8 |
| Settling Time | 5µs, 7µs | 5µs, 7µs |
| Output Type | Voltage - Buffered | Voltage - Buffered |
| Differential Output | No | No |
| Data Interface | Parallel | Parallel |
| Reference Type | External | External |
| Voltage - Supply, Analog | 10.8V ~ 16.5V, ±5V | 10.8V ~ 16.5V, ±5V |
| Voltage - Supply, Digital | 13.5V ~ 16.5V | 13.5V ~ 16.5V |
| INL / DNL(LSB) | ±0.5 (Max), ±1 (Max) | ±0.5 (Max), ±1 (Max) |
| Architecture | R-2R | R-2R |
| Operating Temperature | -40°C ~ 85°C | -40°C ~ 85°C |
Frequently asked questions
What is the difference between AD7228ACRZ and AD7228ACR?
The AD7228ACRZ is the RoHS-compliant version of the AD7228ACR. Both are octal 8-bit voltage-output DACs in a 24-lead SOIC package with the same electrical specifications; the "Z" suffix denotes lead-free/RoHS compliance per Analog Devices part numbering.
Are AD7228ACRZ and AD7228ACR electrically interchangeable?
Yes. Both parts share the same datasheet specifications for resolution (8 bits), number of DACs (eight), output voltage range, reference input, and supply requirements. The only documented difference is the RoHS/lead-free construction indicated by the Z suffix.
What package do the AD7228ACRZ and AD7228ACR use?
Both devices are supplied in a 24-lead SOIC (R-24) surface-mount package. The package outline and pinout are identical between the two orderable part numbers.
What are the key specifications of the AD7228A?
The AD7228A is an octal 8-bit voltage-output digital-to-analog converter with a 5 V reference input, single or dual supply operation, and a parallel microprocessor-compatible interface. It provides eight independent DACs with output amplifiers in a single 24-lead SOIC package.
Can AD7228ACR be used as a drop-in replacement for AD7228ACRZ?
Electrically and functionally yes, since both share the same silicon design and package. However, designs requiring RoHS compliance must use the AD7228ACRZ, as the AD7228ACR is the non-RoHS version and may not meet lead-free assembly requirements.
Which part should be selected for a new RoHS-compliant design?
The AD7228ACRZ should be selected for new designs requiring RoHS compliance. The AD7228ACR is the legacy non-RoHS orderable code and is not recommended for new lead-free assembly processes.
Do both parts operate over the same temperature range?
Yes. Both the AD7228ACRZ and AD7228ACR are specified over the commercial temperature range of 0°C to +70°C, consistent with the "A" grade and "C" temperature code in the part number.