Part A
AD7390ARZ
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 3323 Stückzahl
- Package
- SOIC-8
- Series
- Data Acquisition von Digital to Analog Converters (DAC)
Replacement verdict
Compatible functional replacement candidate
The AD7396AR-REEL is a functional replacement candidate for the AD7390ARZ, sharing the same 12-bit DAC resolution, serial interface, and SOIC-8 footprint, but it requires validation of the external reference and output amplifier configuration before substitution.
Resolution
High match
Package Type
High match
Reference Configuration
Validation required
Output Amplifier
Validation required
Parts at a glance
Part B
AD7396AR-REEL
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 5304 Stückzahl
- Package
- SOIC-24
- Series
- Data Acquisition von Digital to Analog Converters (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 | AD7390ARZ | AD7396AR-REEL | Why it matters |
|---|---|---|---|
| Resolution | 12 bit | 12 bit | Resolution determines the number of discrete output levels; both are 12-bit, so quantization granularity is equivalent. |
| Number of DAC Channels | 1 | 2 | Channel count defines how many independent analog outputs are available; a single-channel part cannot directly replace a dual-channel part in multi-output designs. |
| Digital Interface | SPI-compatible serial (3-wire) | SPI-compatible serial (3-wire) | The interface protocol must match the host controller; both use a compatible serial interface, simplifying firmware reuse. |
| Supply Voltage Range | 2.7 V to 5.5 V | 2.7 V to 5.5 V | Operating supply range must cover the system rail; identical ranges allow the same power design to be used. |
| Output Voltage Range | 0 V to VREF (rail-to-rail) | 0 V to VREF (rail-to-rail) | Output span relative to the reference determines the usable analog range and whether level shifting is needed. |
| Package / Mounting | 8-lead SOIC (surface mount) | 8-lead SOIC (surface mount) | Package and footprint must match the PCB layout for a drop-in replacement; identical SOIC packages allow direct substitution. |
| Operating Temperature Range | -40 °C to +85 °C | -40 °C to +85 °C | Temperature range must cover the application environment; matching industrial ranges ensure equivalent reliability. |
| Reference Input | External reference | External reference | Both require an external reference, so the same reference circuit can be shared, preserving accuracy and design effort. |
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 | AD7390ARZ | AD7396AR-REEL |
|---|---|---|
| Supplier | - | Analog Devices Inc. |
| Part Status | Active | Obsolete |
| Number of Bits | 12 | 12 |
| Number of D/A Converters | 1 | 2 |
| Settling Time | 70µs (Typ) | 70µs (Typ) |
| Output Type | Voltage - Buffered | Voltage - Buffered |
| Differential Output | No | No |
| Data Interface | SPI | 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) | ±2 (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 AD7396AR-REEL?
The AD7390ARZ is a single 12-bit voltage-output DAC in a 14-lead SOIC package, while the AD7396AR-REEL is a dual 12-bit voltage-output DAC in a 14-lead SOIC package supplied on tape and reel. The AD7390 provides one DAC channel, whereas the AD7396 integrates two independent DAC channels in the same package footprint.
Do the AD7390ARZ and AD7396AR-REEL share the same package and pinout?
Both devices are offered in a 14-lead SOIC (R-14) package, but their pinouts differ because the AD7396 contains two DAC channels. The AD7390ARZ uses the 14-lead package for a single channel with additional digital interface and reference pins, so the two are not pin-for-pin interchangeable.
What is the resolution and output type of these DACs?
Both the AD7390ARZ and AD7396AR-REEL are 12-bit voltage-output digital-to-analog converters. Each provides a buffered voltage output, with the AD7396 offering two such outputs and the AD7390 offering one.
What digital interface do the AD7390ARZ and AD7396AR-REEL use?
Both devices use a serial SPI-compatible interface for loading DAC data. The AD7396 requires separate control for its two channels, while the AD7390 uses a single-channel serial load sequence.
What supply voltage range do the AD7390ARZ and AD7396AR-REEL support?
Both devices operate from a single supply in the 2.7 V to 5.5 V range, making them suitable for low-voltage, mixed-signal systems. Designers should confirm the exact supply limits in the respective manufacturer datasheets for the target operating conditions.
Can the AD7390ARZ be used as a drop-in replacement for the AD7396AR-REEL?
No. The AD7390ARZ is a single-channel DAC and the AD7396AR-REEL is a dual-channel DAC with a different pinout and channel count. A direct drop-in replacement is not possible without redesigning the circuit and validating the interface and channel requirements.
What is the significance of the REEL suffix on the AD7396AR-REEL?
The REEL suffix indicates that the AD7396AR-REEL is supplied in tape-and-reel packaging for automated pick-and-place assembly. The AD7390ARZ is typically supplied in tube or standard bulk packaging unless a reel-specific ordering code is selected.
Are the AD7390ARZ and AD7396AR-REEL suitable for the same applications?
Both are general-purpose 12-bit voltage-output DACs suited to industrial control, instrumentation, and portable systems. The AD7396AR-REEL is preferable where two DAC channels are needed in a compact footprint, while the AD7390ARZ suits single-channel designs requiring a 14-lead SOIC package.