Part A
AD7392ARZ
テキサス・インスツルメンツ
- Lifecycle
- Active
- Stock
- 2297 個数
- Package
- SOIC-20
- Series
- データ取得 - デジタル/アナログコンバータ (DAC)
Replacement verdict
Compatible functional replacement candidate
The AD7392ARZ and AD7392AR are functionally equivalent 12-bit voltage-output DACs from Analog Devices, sharing the same core architecture, resolution, and SOIC-8 package. The AD7392ARZ is the RoHS-compliant lead-free version of the AD7392AR, making it a suitable drop-in replacement in most designs, provided the operating temperature range and supply requirements are validated against the target application.
Resolution
High match
Package Type
High match
RoHS Compliance
Validation required
Operating Temperature Range
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 | AD7392ARZ | AD7392AR | Why it matters |
|---|---|---|---|
| Package / Mounting | 20-Lead SOIC (R-20), Surface Mount | 20-Lead SOIC (R-20), Surface Mount | Package and mounting style determine PCB footprint and assembly compatibility; both share the same SOIC-20 body. |
| RoHS / Lead-Free Status | RoHS compliant, lead-free (Z suffix) | Non-RoHS, contains lead (no Z suffix) | The "Z" suffix denotes lead-free/RoHS compliance; this affects regulatory compliance and solder process selection. |
| Resolution | 12 bits | 12 bits | Resolution defines the number of discrete output levels and thus the finest achievable DAC step size. |
| Number of DAC Channels | 1 | 1 | Channel count determines how many independent analog outputs the device can drive. |
| Supply Voltage Range | 2.7 V to 5.5 V | 2.7 V to 5.5 V | The supply range must match the system rail to ensure proper operation and output swing. |
| Interface Type | SPI-compatible serial (3-wire) | SPI-compatible serial (3-wire) | The digital interface must be compatible with the host controller's serial bus for communication. |
| Operating Temperature Range | -40 °C to +85 °C | -40 °C to +85 °C | Temperature range determines suitability for the target environment and reliability margins. |
| Output Type | Voltage output | Voltage output | Voltage-output DACs drive loads directly without external I-to-V conversion, simplifying the analog chain. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | AD7392ARZ | AD7392AR |
|---|---|---|
| Supplier | - | Analog Devices Inc.,Rochester Electronics, LLC |
| Part Status | Active | Obsolete |
| Number of Bits | 12 | 12 |
| Number of D/A Converters | 1 | 1 |
| Settling Time | 70µs (Typ) | 70µs (Typ) |
| Output Type | Voltage - Buffered | Voltage - Buffered |
| Differential Output | No | No |
| Data Interface | Parallel | Parallel |
| Reference Type | External | External |
| Voltage - Supply, Analog | 2.7V ~ 5.5V | 2.7V ~ 5.5V |
| Voltage - Supply, Digital | 2.7V ~ 5.5V | 2.7V ~ 5.5V |
| INL / DNL(LSB) | ±3 (Max), ±1 (Max) | ±3 (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 AD7392ARZ and AD7392AR?
The AD7392ARZ and AD7392AR are functionally identical 12-bit voltage-output digital-to-analog converters. The suffix difference is package/ordering related: the "Z" designation in AD7392ARZ indicates RoHS-compliant lead-free construction, while AD7392AR is the non-RoHS (leaded) version. Both are specified in a 20-lead SOIC package and share the same electrical specifications per the Analog Devices datasheet.
Are AD7392ARZ and AD7392AR electrically interchangeable?
Yes. Both parts are the same AD7392 12-bit DAC die with identical resolution, reference input, output range, and interface specifications. The only documented difference is the RoHS/lead-free status of the package finish, so they are electrically interchangeable in the same circuit.
What is the resolution and architecture of the AD7392?
The AD7392 is a 12-bit voltage-output digital-to-analog converter with a serial (SPI-compatible) interface. It operates from a single +2.7 V to +5.5 V supply and provides a buffered voltage output. Refer to the Analog Devices AD7392 datasheet for the complete electrical specifications.
Can AD7392ARZ be used as a drop-in replacement for AD7392AR?
Yes, in most cases. Because both share the same 20-lead SOIC package, pinout, and electrical specifications, AD7392ARZ can replace AD7392AR on an existing PCB. The substitution is recommended where RoHS compliance is required; verify the specific design's soldering process and any customer-specific lead-free requirements before substituting.
Which part should be selected for a new RoHS-compliant design?
AD7392ARZ should be selected for new designs requiring RoHS compliance, since the "Z" suffix denotes the lead-free, RoHS-compliant package finish. AD7392AR is the non-RoHS version and is generally not preferred for new designs subject to RoHS or lead-free manufacturing requirements.
Do AD7392ARZ and AD7392AR have the same package and pinout?
Yes. Both are offered in the same 20-lead SOIC (R-20) package with identical pin assignments. The package body, lead count, and pin functions are the same; only the lead finish/RoHS status differs between the two orderable part numbers.
What supply voltage range do AD7392ARZ and AD7392AR support?
Both devices operate from a single supply of +2.7 V to +5.5 V, as specified in the Analog Devices AD7392 datasheet. The supply range is identical for both orderable part numbers because they share the same silicon and electrical specifications.