Part A
AD7392ARZ
Công ty Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 2297 PCS
- Package
- SOIC-20
- Series
- Data Acquisition - Digital to Analog Converters (DAC)
Replacement verdict
Compatible functional replacement candidate
The AD7390ARZ and AD7392ARZ are functionally compatible 12-bit voltage-output DACs sharing the same SOIC-8 package, supply range, and serial interface, making the AD7392ARZ a viable replacement candidate for the AD7390ARZ in most designs. Designers should confirm the reference input configuration and output amplifier settling behavior against their specific application requirements before final qualification.
Resolution
High match
Package Type
High match
Supply Voltage Range
High match
Reference Input Configuration
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 | AD7390ARZ | AD7392ARZ | Why it matters |
|---|---|---|---|
| Resolution | 12 bits | 12 bits | Resolution determines the number of discrete output levels; both are 12-bit so they offer the same fine-grained control. |
| Number of DAC Channels | 1 | 1 | Channel count defines how many independent analog outputs are available; both are single-channel devices. |
| 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; identical ranges mean either part can operate in the same power environment. |
| Interface Type | SPI-compatible serial (3-wire) | SPI-compatible serial (3-wire) | The digital interface must be compatible with the host controller; both use the same serial protocol. |
| Output Type | Voltage output | Voltage output | Voltage-output DACs drive loads directly without external I/V conversion; both are voltage output. |
| Package / Mounting | 8-lead SOIC (surface mount) | 8-lead SOIC (surface mount) | Package and footprint must match the PCB layout for drop-in substitution; both use the same 8-lead SOIC. |
| Operating Temperature Range | -40 °C to +85 °C | -40 °C to +85 °C | The temperature range must cover the application environment; identical ranges ensure equivalent environmental tolerance. |
| Reference Type | External reference | External reference | Reference architecture affects accuracy and design complexity; both require an external reference, so the same reference circuit can be reused. |
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 | AD7392ARZ | AD7390ARZ |
|---|---|---|
| Part Status | Active | Active |
| 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 | SPI |
| 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) | ±2 (Max), ±1 (Max) |
| Architecture | R-2R | R-2R |
| Operating Temperature | -40°C ~ 85°C | -40°C ~ 85°C |
Frequently asked questions
What are the key differences between the AD7390ARZ and AD7392ARZ?
The AD7390ARZ is a 12-bit voltage-output DAC, while the AD7392ARZ is a 12-bit current-output DAC. Both are single-channel, serial-input devices in 8-lead SOIC packages, but they differ in output architecture and therefore in the external components required for a complete solution.
Are the AD7390ARZ and AD7392ARZ pin-compatible?
No. Although both are offered in 8-lead SOIC (R-8) packages, the pin functions differ because the AD7390ARZ provides a buffered voltage output and the AD7392ARZ provides a current output. The PCB layout and external circuitry must be designed accordingly, so they are not direct drop-in replacements.
What is the resolution and interface of both devices?
Both the AD7390ARZ and AD7392ARZ are 12-bit DACs with a serial (SPI-compatible) digital interface. They accept a serial data word and update the DAC register accordingly, making them suitable for microcontroller-based systems requiring moderate-resolution analog output.
What supply voltage do the AD7390ARZ and AD7392ARZ require?
Both devices operate from a single +2.7 V to +5.5 V supply, according to the Analog Devices datasheets. This wide supply range supports both 3 V and 5 V logic systems.
Does the AD7390ARZ include an internal output buffer?
Yes. The AD7390ARZ integrates a rail-to-rail output buffer amplifier, providing a buffered voltage output directly from the DAC. The AD7392ARZ, by contrast, provides a current output and requires an external op-amp to convert the current to a voltage if a voltage output is needed.
What are typical applications for each device?
The AD7390ARZ is typically used where a buffered voltage output is required, such as digital gain and offset adjustment, programmable voltage sources, and portable instrumentation. The AD7392ARZ is suited to applications requiring a current output, such as driving current-controlled loops or where an external amplifier is used to set the output range.
What is the operating temperature range for these DACs?
Both the AD7390ARZ and AD7392ARZ are specified for the industrial temperature range of −40 °C to +85 °C, per the Analog Devices datasheets.