Part A
AD5542AARUZ
テキサス・インスツルメンツ
- Lifecycle
- Active
- Stock
- 7554 個数
- Series
- データ取得 - デジタル/アナログコンバータ (DAC)
Replacement verdict
Not a drop-in replacement
The AD5544BRSZ and AD5542AARUZ are not drop-in replacements for each other. The AD5544BRSZ is a quad-channel 16-bit current-output DAC in a 28-lead SSOP, while the AD5542AARUZ is a single-channel 16-bit voltage-output DAC in a 16-lead TSSOP. They differ in channel count, output type, package footprint, and digital interface, so a direct board-level substitution is not possible without redesign.
Different channel count
Different output type
Different footprint
Different digital interface
Parts at a glance
Part B
AD5544BRSZ
テキサス・インスツルメンツ
- Lifecycle
- Active
- Stock
- 7094 個数
- Package
- SSOP-28
- Series
- データ取得 - デジタル/アナログコンバータ (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 | AD5544BRSZ | AD5542AARUZ | Why it matters |
|---|---|---|---|
| Number of DAC Channels | 4 | 1 | Channel count determines how many independent analog outputs can be generated, directly affecting functional substitutability in multi-channel designs. |
| Resolution | 16 bits | 16 bits | Resolution defines the smallest analog output step; matching resolution is essential for equivalent precision performance. |
| Interface Type | SPI | SPI | The digital interface must match the host controller to allow direct communication without additional glue logic. |
| Supply Voltage (Analog) | 2.7 V to 5.5 V | 2.7 V to 5.5 V | Analog supply range affects compatibility with the system power rail and the achievable output swing. |
| Output Type | Current (I-out) | Voltage (V-out) | Current-output versus voltage-output DACs require different external signal conditioning, impacting direct substitution. |
| Package / Case | 28-Lead SOIC | 16-Lead TSSOP | Package footprint and pin count must match the PCB layout for a drop-in replacement. |
| Operating Temperature Range | -40°C to +85°C | -40°C to +85°C | Temperature range ensures the device meets the environmental requirements of the target application. |
| INL (Integral Nonlinearity) | ±1 LSB | ±1 LSB | INL indicates accuracy deviation from ideal transfer function; matching values supports equivalent precision. |
| Settling Time | 1 µs | 1 µs | Settling time determines how fast the DAC output reaches its final value, critical for dynamic applications. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | AD5542AARUZ | AD5544BRSZ |
|---|---|---|
| Part Status | Active | Active |
| Base Product Number | AD5542 | - |
| Number of Bits | 16 | 16 |
| Number of D / A Converters | 1 | - |
| Settling Time | 1µs (Typ) | 900ns (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 | 2.7V ~ 5.5V |
| Voltage - Supply, Digital | 2.7V ~ 5.5V | 2.7V ~ 5.5V |
| INL / DNL (LSB) | ±0.5, ±0.5 | - |
| Architecture | R-2R | R-2R |
| Operating Temperature | -40°C ~ 85°C | -40°C ~ 125°C |
| Mounting Type | Surface Mount | - |
| Packaging | Tube | - |
| Number of D/A Converters | - | 4 |
| INL / DNL(LSB) | - | ±1 (Max), ±1 (Max) |
Frequently asked questions
What are the primary differences between the AD5544BRSZ and the AD5542AARUZ?
The AD5544BRSZ is a quad, 16-bit, current-output DAC with a serial interface, while the AD5542AARUZ is a single, 16-bit, voltage-output DAC with a serial interface. The AD5544BRSZ provides four independent DAC channels in a 28-lead SSOP package, whereas the AD5542AARUZ provides one channel in a 16-lead TSSOP package.
Are the AD5544BRSZ and AD5542AARUZ pin-compatible?
No. The AD5544BRSZ is housed in a 28-lead SSOP package, and the AD5542AARUZ is housed in a 16-lead TSSOP package. They have different pin counts, pin functions, and PCB land patterns, so they are not pin-compatible.
Can the AD5544BRSZ and AD5542AARUZ operate from the same supply voltage?
Yes. Both devices are specified for operation with a single 2.7 V to 5.5 V supply, and both also support dual-supply operation. However, the AD5544BRSZ is a current-output DAC requiring an external I/V converter for voltage output, while the AD5542AARUZ provides a buffered voltage output directly.
What is the resolution and channel count of each device?
The AD5544BRSZ offers 16-bit resolution across four independent DAC channels. The AD5542AARUZ offers 16-bit resolution on a single DAC channel. Both are 16-bit devices, but the channel count differs significantly.
Do both devices use the same serial interface protocol?
Both devices use a serial interface, but the AD5544BRSZ uses a 3-wire SPI-compatible interface with a dedicated LDAC pin for simultaneous updating of multiple DACs. The AD5542AARUZ also uses an SPI-compatible interface but is designed for single-channel operation. The exact timing and register maps differ between the two products.
Which device is better suited for multi-channel applications?
The AD5544BRSZ is better suited for multi-channel applications because it integrates four independent 16-bit DACs in a single package, reducing board space and component count. The AD5542AARUZ is intended for single-channel applications requiring a compact, voltage-output DAC.
Are the AD5544BRSZ and AD5542AARUZ interchangeable in an existing design?
No. They are not interchangeable without significant redesign. The AD5544BRSZ is a quad current-output DAC in a 28-lead SSOP, while the AD5542AARUZ is a single voltage-output DAC in a 16-lead TSSOP. Differences in package, channel count, output type, and pinout prevent direct substitution.