Part A
AD5541AARMZ
Analog Equipment GmbH.
- Lifecycle
- Active
- Stock
- 3919 PCS
- Package
- MSOP-10
- Series
- Acquisition de données - convertisseur numérique - analogique (DAC)
Replacement verdict
Compatible functional replacement candidate
The AD5541AARMZ and AD5543BRM are both 16-bit single-channel voltage-output DACs from Analog Devices in MSOP-8 packages, sharing identical supply, reference, and interface characteristics. The AD5543BRM offers higher INL accuracy and a faster settling time, making it the stronger choice for precision applications, while the AD5541AARMZ remains a viable alternative where its looser linearity and slower settling are acceptable. Both are functionally interchangeable at the pin and protocol level, but the AD5543BRM is the preferred option for demanding high-accuracy designs.
Resolution
High match
Output Type
High match
Package Type
High match
INL Accuracy
Validation required
Parts at a glance
Part B
AD5543BRM
Analog Equipment GmbH.
- Lifecycle
- Active
- Stock
- 8611 PCS
- Package
- TSSOP-8
- Series
- Acquisition de données - convertisseur numérique - analogique (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 | AD5541AARMZ | AD5543BRM | Why it matters |
|---|---|---|---|
| Resolution | 16 bit | 16 bit | Resolution determines the smallest output step; both are 16-bit, so they offer the same nominal precision. |
| Number of D/A Converters | 1 | 1 | Both are single-channel DACs, so channel count is not a differentiator for substitution. |
| Output Type | Voltage - Unbuffered | Current - Unbuffered | Output type determines whether external signal conditioning is needed; a voltage-output DAC differs fundamentally from a current-output DAC. |
| Data Interface | SPI, DSP | SPI, DSP | Interface compatibility affects how easily the part can be dropped into an existing digital bus design. |
| Voltage - Supply, Analog | 2.7V ~ 5.5V | 5V | Analog supply range affects compatibility with the system's available rails and overall signal headroom. |
| Voltage - Supply, Digital | 2.7V ~ 5.5V | 5V | Digital supply range must match the logic levels of the controlling device to avoid level shifting. |
| Reference Type | External | External | Both require an external reference, so reference design effort is equivalent. |
| Operating Temperature | -40°C ~ 125°C | -40°C ~ 85°C | The wider temperature range of the AD5541AARMZ allows use in harsher environments where the AD5543BRM may not be rated. |
| Package / Case | 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) | 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) | Package compatibility is essential for physical drop-in replacement on an existing PCB footprint. |
| Settling Time | 1µs | 500ns | Settling time affects achievable update rate and dynamic performance in fast control loops. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | AD5541AARMZ | AD5543BRM |
|---|---|---|
| Supplier | - | Analog Devices Inc.,Rochester Electronics, LLC |
| Part Status | Active | Obsolete |
| Number of Bits | 16 | 16 |
| Number of D/A Converters | 1 | 1 |
| Settling Time | 1µs | 500ns (Typ) |
| Output Type | Voltage - Unbuffered | Current - Unbuffered |
| Differential Output | No | No |
| Data Interface | SPI, DSP | SPI |
| Reference Type | External | External |
| Voltage - Supply, Analog | 2.7V ~ 5.5V | 5V |
| Voltage - Supply, Digital | 2.7V ~ 5.5V | 5V |
| INL / DNL(LSB) | ±0.5, ±0.5 | ±2 (Max), ±1 (Max) |
| Architecture | R-2R | R-2R |
| Operating Temperature | -40°C ~ 125°C | -40°C ~ 85°C |
Frequently asked questions
What are the key differences between the AD5541AARMZ and the AD5543BRM?
The AD5541AARMZ is a 16-bit voltage-output DAC with a serial interface, specified for 2.7 V to 5.5 V operation, and offered in a 10-lead MSOP package. The AD5543BRM is a 16-bit current-output multiplying DAC with a serial interface, specified for 5 V operation, and offered in a 10-lead MSOP package. The AD5541AARMZ provides a buffered voltage output, while the AD5543BRM provides an unbuffered current output requiring an external op amp for current-to-voltage conversion.
Are the AD5541AARMZ and AD5543BRM pin-compatible?
No. Although both devices are housed in a 10-lead MSOP package, their pin functions differ. The AD5541AARMZ has a voltage output and an internal reference input configuration, while the AD5543BRM has an IOUT current output and RFB feedback resistor pin. The pinouts are not interchangeable, and the PCB layout must be designed for the specific device.
Can the AD5541AARMZ and AD5543BRM operate from the same supply voltage?
Not necessarily under identical conditions. The AD5541AARMZ is specified for a supply range of 2.7 V to 5.5 V. The AD5543BRM is specified for a 5 V supply. While both can operate at 5 V, the AD5541AARMZ supports lower supply voltages down to 2.7 V, whereas the AD5543BRM does not.
Do both DACs have the same digital interface?
Both devices use a serial interface, but the interface protocols differ. The AD5541AARMZ uses a 3-wire SPI-compatible interface. The AD5543BRM uses a 3-wire serial interface that is compatible with SPI, QSPI, MICROWIRE, and DSP interface standards. The timing and register structure should be verified against the respective datasheets before designing the digital communication.
Which device is better for unipolar voltage output applications?
The AD5541AARMZ is better suited for unipolar voltage output applications because it integrates an output amplifier that provides a buffered voltage output directly. The AD5543BRM is a current-output DAC and requires an external operational amplifier to convert the IOUT current to a voltage, adding external components and design complexity.
What is the resolution and accuracy specification of each device?
Both the AD5541AARMZ and AD5543BRM are 16-bit DACs. The AD5541AARMZ offers 16-bit monotonicity and typical DNL of ±1 LSB. The AD5543BRM offers 16-bit monotonicity and typical DNL of ±1 LSB. For guaranteed INL, DNL, offset error, and gain error limits over temperature, refer to the respective manufacturer datasheets, as grades and test conditions affect these specifications.
Are the AD5541AARMZ and AD5543BRM drop-in replacements for each other?
No. They are not drop-in replacements. They differ in output type (voltage vs. current), pinout, supply voltage range, and external component requirements. A direct substitution without redesign is not possible. Any replacement must be validated against the target design requirements, including reference, output stage, and digital timing.
What are the operating temperature ranges for these devices?
The AD5541AARMZ is specified for the industrial temperature range of −40°C to +85°C. The AD5543BRM is specified for the industrial temperature range of −40°C to +85°C. Both devices are available in extended temperature ranges depending on the specific grade; consult the manufacturer datasheet for the exact grade being used.