MAX551BCUB

Digital To Analog Converters Overview

The MAX551BCUB+ is a 12-bit, current-output, multiplying digital-to-analog converter (DAC) manufactured by Analog Devices Inc./Maxim Integrated. It operates from a single +4.5V to +5.25V supply and features an SPI/QSPI/MICROWIRE-compatible 3-wire serial interface. The device utilizes a laser-trimmed R-2R resistor array with NMOS current switches. Key electrical parameters include a typical supply current of 0.8mA at VDD=5V, a reference input resistance of 71kΩ, and a -3dB reference bandwidth of 725kHz. Linearity specifications are ±1 LSB for both Integral Nonlinearity (INL) and Differential Nonlinearity (DNL). The component is housed in a 10-pin µMAX package and supports an operating temperature range of 0°C to +70°C.

Digital To Analog Converters Feature Summary

• Supports unipolar or bipolar output configurations using a single power supply.
• Features double-buffered interface logic with separate 12-bit input and DAC registers.
• Includes internal power-on-reset circuitry to clear all DAC registers upon startup.
• Provides asynchronous clear input to force the DAC output voltage to zero.

Digital To Analog Converters Applications

• Automatic Calibration
• Gain Adjustment
• Transducer Drivers
• Process-Control I/O Boards

Digital To Analog Converters Procurement Notes

Verify the specific suffix 'CUB' corresponds to the 10-pin µMAX package and the commercial temperature grade (0°C to +70°C). Confirm that the part number includes the '+' designation for lead-free/RoHS compliance status as indicated in official documentation. Cross-reference the manufacturer's latest ordering guide to ensure no obsolete packaging changes affect procurement.

Digital To Analog Converters Selection Notes

Select this component when a 12-bit resolution and multiplying capability are required within a single-supply architecture. Ensure the application can accommodate the 10-pin µMAX footprint and that the serial interface timing meets the system clock requirements. Verify that the external reference voltage range aligns with the device's specified input limits for optimal linearity performance.

Digital To Analog Converters Part Context

This device belongs to the MAX551/MAX552 family of serial multiplying DACs. The MAX551 variant specifically targets +5V single-supply applications, whereas the MAX552 is designed for +3V operation. The 'B' suffix denotes a linearity specification of ±1 LSB, distinguishing it from the 'A' grade which offers tighter ±0.5 LSB accuracy. The 'CUB' suffix identifies the commercial temperature range and the specific 10-pin µMAX physical package.

Digital To Analog Converters Replacement Considerations

Direct substitutes within the same package and temperature grade include the MAX551ACUB+ (±0.5 LSB linearity) and MAX551BEUB+ (-40°C to +85°C temperature range). For +3V operation, the MAX552BCUB+ is functionally similar but requires a different supply voltage.

Digital To Analog Converters FAQ

How does the MAX551BCUB handle digital inputs during power-up?

An internal power-on-reset circuit automatically clears all DAC registers when power is applied, ensuring the DAC output voltage starts at 0V.

What is the function of the CLR pin on the µMAX package?

The CLR pin provides an asynchronous clear function. Pulling this input low clears all DAC registers, forcing the output voltage to 0V regardless of the current data state.

Can the MAX551BCUB operate with AC signals at the reference input?

Yes, the device is a true 4-quadrant multiplying DAC capable of accepting AC signals at the REF input within a voltage range of ±6V.