Part A
AD5544BRSZ
ADI公司
- Lifecycle
- Active
- Stock
- 7094 件
- Package
- SSOP-28
- Series
- 資料獲取-數模轉換器（DAC）
Replacement verdict
Not a drop-in replacement
The AD5544BRSZ and AD5542JR are not functionally interchangeable. The AD5544BRSZ is a quad-channel 16-bit current-output DAC in a 28-lead SSOP, while the AD5542JR is a single-channel 16-bit voltage-output DAC in a 16-lead SOIC. They differ in channel count, output architecture, package footprint, and reference input configuration, requiring complete circuit redesign rather than direct substitution.
Different channel count
Different output type
Different package footprint
Different reference architecture
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 | AD5542JR | Why it matters |
|---|---|---|---|
| Number of DAC Channels | 4 | 1 | Determines how many independent analog outputs are available; a 4-channel device cannot be substituted by a 1-channel device without redesigning the output stage. |
| Resolution | 16 bits | 16 bits | Both provide 16-bit resolution, so quantization accuracy and LSB size are equivalent for a given reference. |
| DAC Architecture | Current-output R-2R | Voltage-output R-2R | Current-output DACs require an external I/V converter, while voltage-output DACs drive loads directly; this affects the analog signal chain and board design. |
| Interface Type | SPI / Serial | SPI / Serial | Both use a serial interface, so the digital host connection is compatible, though register maps and command sets differ. |
| Supply Voltage | 2.7 V to 5.5 V | 2.7 V to 5.5 V | Matching supply ranges allow both parts to operate from the same system rails without level shifting. |
| Reference Input | External | External | Both require an external reference, so reference accuracy and stability directly set the output accuracy for either device. |
| Package | 28-lead SSOP | 16-lead SOIC | Different footprints and pin counts prevent drop-in replacement; the PCB layout must be redesigned. |
| Operating Temperature Range | -40 °C to +85 °C | -40 °C to +85 °C | Identical temperature ratings mean both are suitable for the same industrial temperature environments. |
| Output Settling Time | 1 µs (typical) | 1 µs (typical) | Similar settling times indicate comparable dynamic performance for control-loop and waveform-generation applications. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | AD5544BRSZ | AD5542JR |
|---|---|---|
| Supplier | - | Analog Devices Inc.,Rochester Electronics, LLC |
| Part Status | Active | Obsolete |
| Number of Bits | 16 | 16 |
| Number of D/A Converters | 4 | 1 |
| Settling Time | 900ns (Typ) | 1µs (Typ) |
| Output Type | Current - Unbuffered | Voltage - Unbuffered |
| Differential Output | No | No |
| Data Interface | SPI | SPI, DSP |
| 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) | ±1 (Max), ±1 (Max) | ±0.5, ±0.5 |
| Architecture | R-2R | R-2R |
| Operating Temperature | -40°C ~ 125°C | 0°C ~ 70°C |
Frequently asked questions
What are the key architectural differences between the AD5544BRSZ and the AD5542JR?
The AD5544BRSZ is a quad-channel, 16-bit current-output DAC with a serial interface, housed in a 28-lead SSOP. The AD5542JR is a single-channel, 16-bit voltage-output DAC with a serial interface, housed in a 16-lead SOIC. The AD5544BRSZ provides four independent current outputs, while the AD5542JR provides one buffered voltage output.
Are the AD5544BRSZ and AD5542JR pin-compatible or package-compatible?
No. The AD5544BRSZ uses a 28-lead SSOP package, while the AD5542JR uses a 16-lead SOIC package. They have different pin counts, pin functions, and PCB land patterns, so they are not drop-in replacements for each other.
What is the resolution and DAC architecture of each device?
Both devices are 16-bit DACs. The AD5544BRSZ uses a current-steering R-2R ladder architecture with four DAC channels. The AD5542JR uses a segmented R-2R voltage-output architecture with a single DAC channel and an internal output amplifier.
What are the output configurations of the AD5544BRSZ and AD5542JR?
The AD5544BRSZ provides unbuffered current outputs (IOUT) requiring an external op-amp for current-to-voltage conversion. The AD5542JR provides a buffered voltage output directly from the device, with an internal reference buffer and output amplifier.
Do the AD5544BRSZ and AD5542JR have the same digital interface?
Both use a serial interface, but they are not identical. The AD5544BRSZ uses a 3-wire or 4-wire SPI-compatible serial interface with separate CS, SCLK, and SDIN pins, plus a daisy-chain output. The AD5542JR uses a 3-wire SPI-compatible interface with CS, SCLK, and DIN pins, and includes a SDO pin for daisy-chaining.
What are the reference input requirements for the AD5544BRSZ and AD5542JR?
The AD5544BRSZ requires an external reference voltage for each DAC or a shared external reference, with a specified reference input range. The AD5542JR also requires an external reference voltage, but includes an internal reference buffer that allows the reference input to be driven with a lower impedance source.
What are the operating temperature ranges for the AD5544BRSZ and AD5542JR?
Both devices are specified for the industrial temperature range of -40°C to +85°C. The AD5544BRSZ is available in a 28-lead SSOP package, and the AD5542JR is available in a 16-lead SOIC package, both rated for this temperature range.
Can the AD5544BRSZ and AD5542JR be used in the same application?
They serve different system needs. The AD5544BRSZ is suited for multi-channel applications requiring four independent current-output DACs, such as industrial control or optical module biasing. The AD5542JR is suited for single-channel voltage-output applications requiring a buffered output, such as portable instrumentation or digital gain and offset adjustment.