Part A
AD5412AREZ
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 3597 PCS
- Package
- TSSOP-24
- Series
- Acquisição de dados - Convertedores digitais para analógicos (DAC)
Replacement verdict
Not a drop-in replacement
The AD5412AREZ and AD5415YRU are not functionally interchangeable. The AD5412AREZ is a single-channel 12-bit current-source and voltage-output DAC with an integrated 4.5 V to 40 V compliance current source, HART connectivity, and a 24-lead TSSOP package, while the AD5415YRU is a dual-channel 12-bit current-output DAC with a 4.5 V to 5.5 V supply and a 24-lead TSSOP package. Their output architectures, channel counts, supply requirements, and internal reference configurations differ fundamentally, so direct substitution is not feasible without substantial circuit redesign.
Different output type
Different channel count
Different supply voltage
Different internal reference
Parts at a glance
Part B
AD5415YRU
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 8979 PCS
- Package
- TSSOP-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 | AD5412AREZ | AD5415YRU | Why it matters |
|---|---|---|---|
| Number of DAC Channels | 1 | 2 | Determines how many independent analog outputs are available; a single-channel device cannot directly replace a dual-channel one in multi-output designs. |
| Resolution | 12 bits | 12 bits | Sets the output voltage/current step size and achievable precision; matching resolution is essential for equivalent accuracy. |
| Output Type | Current and Voltage | Current | Defines the signal format the DAC can produce; a voltage-capable part can serve voltage-mode loads that a current-only DAC cannot. |
| Output Current Range | 0 mA to 24 mA (programmable) | 4 mA to 20 mA | Specifies the usable current span; different ranges affect compatibility with loop-powered or current-driven loads. |
| Output Voltage Range | 0 V to 5 V, 0 V to 10 V, ±5 V, ±10 V | Not applicable (current output only) | Determines whether the device can directly drive voltage-mode inputs without external conversion circuitry. |
| Supply Voltage | 10.8 V to 40 V (AVDD), 2.7 V to 5.5 V (DVDD) | 2.7 V to 5.5 V | Affects power supply design and compatibility with existing rails; mismatched supplies require redesign of the power stage. |
| Interface Type | SPI | I2C | Determines the digital communication protocol; SPI and I2C are not pin- or protocol-compatible, requiring firmware and wiring changes. |
| Package / Case | 24-Lead TSSOP (RE-24) | 16-Lead TSSOP (RU-16) | Physical footprint and pin count must match the PCB layout for a drop-in replacement. |
| Operating Temperature Range | -40 °C to +105 °C | -40 °C to +125 °C | Defines the environmental conditions under which the device is guaranteed to operate within specification. |
| Internal Reference | Yes (5 V, 10 ppm/°C) | No (external reference required) | An internal reference simplifies design and reduces external component count; its absence requires an added precision reference. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | AD5412AREZ | AD5415YRU |
|---|---|---|
| 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 | 25µs (V), 40µs (A) (Typ) | 120ns |
| Output Type | Voltage or Current - Buffered | Current - Unbuffered |
| Differential Output | No | Yes |
| Data Interface | SPI, DSP | SPI, DSP |
| Reference Type | External, Internal | External |
| Voltage - Supply, Analog | 10.8V ~ 40V, -3V ~ 26.4V | 2.5V ~ 5.5V |
| Voltage - Supply, Digital | 2.7V ~ 5.5V | 2.5V ~ 5.5V |
| INL / DNL(LSB) | -, ±1.3 (Max) | ±1 (Max), -1/+2 (Max) |
| Architecture | R-2R | R-2R |
| Operating Temperature | -40°C ~ 105°C | -40°C ~ 125°C |
Frequently asked questions
What are the primary functional differences between the AD5412AREZ and the AD5415YRU?
The AD5412AREZ is a single-channel, 12-bit current-source and voltage-output DAC with an integrated 4.5 V to 40 V compliance range for current mode and a 5 V reference. The AD5415YRU is a dual-channel, 12-bit current-output DAC (multiplying DAC) with a 2.5 V to 5.5 V reference input range and no integrated output amplifier. The AD5412AREZ integrates a precision output amplifier and current-source circuitry, while the AD5415YRU provides two uncommitted current-steering DAC outputs requiring external I-V conversion.
Are the AD5412AREZ and AD5415YRU pin-compatible or package-compatible?
No. The AD5412AREZ is supplied in a 24-lead TSSOP (RE-24 package), while the AD5415YRU is supplied in a 16-lead TSSOP (RU-16 package). Pin counts, pin functions, and PCB land patterns differ, so they are not drop-in replacements for each other.
What are the resolution and channel-count specifications for each device?
Both devices offer 12-bit resolution. The AD5412AREZ provides one DAC channel with both current and voltage output modes. The AD5415YRU provides two independent DAC channels with current outputs only.
What output configurations does each DAC support?
The AD5412AREZ supports a unipolar/bipolar voltage output and a 4 mA to 20 mA current output, with integrated output amplifier and current-source circuitry. The AD5415YRU provides two current-steering DAC outputs that require an external operational amplifier to convert the current to a voltage; it does not include an integrated output amplifier or current-source driver.
What are the reference input requirements for the AD5412AREZ and AD5415YRU?
The AD5412AREZ includes an internal 5 V reference and also accepts an external reference. The AD5415YRU requires an external reference voltage in the range of 2.5 V to 5.5 V and does not include an internal reference.
What are the supply voltage ranges for the AD5412AREZ and AD5415YRU?
The AD5412AREZ operates from a single supply of 10.8 V to 40 V for current output, or dual supplies of ±10.8 V to ±26.4 V for voltage output, with a separate digital supply of 2.7 V to 5.5 V. The AD5415YRU operates from a single 2.5 V to 5.5 V supply for the DAC core and a separate 2.5 V to 5.5 V digital supply.
What are the operating temperature ranges for the AD5412AREZ and AD5415YRU?
The AD5412AREZ is specified for the industrial temperature range of −40°C to +105°C. The AD5415YRU is specified for the industrial temperature range of −40°C to +125°C.
What serial interface types do the AD5412AREZ and AD5415YRU use?
Both devices use a serial interface. The AD5412AREZ features an SPI-compatible interface with a maximum clock rate of 30 MHz. The AD5415YRU features a 3-wire SPI-compatible interface with a maximum clock rate of 50 MHz.
Can the AD5412AREZ and AD5415YRU be used interchangeably in an existing design?
No. They differ in channel count, output type, package, pinout, reference requirements, and supply voltage ranges. A direct substitution is not possible without redesigning the PCB, external circuitry, and firmware to accommodate the different functional and electrical characteristics.