MAX5138BGTE+

Digital To Analog Converters Overview

The MAX5138BGTE+ is a single-channel, low-power, buffered voltage-output digital-to-analog converter with 16-bit resolution. It operates on analog and digital supplies ranging from +2.7V to +5.25V. The device features a high-linearity segmented resistor string architecture with guaranteed monotonicity. Key electrical parameters include a settling time of 5µs to ±2 LSB, an internal reference voltage of 2.44V, and supply currents of 1.6mA (analog) and 10µA (digital). It supports a 30MHz serial interface and includes a READY output for daisy-chaining.

Digital To Analog Converters Feature Summary

• Hardware-selectable power-up reset to zero or midscale via M/Z pin
• Double-buffered input registers with asynchronous LDAC update
• READY output facilitates multi-device daisy-chaining
• Low power consumption with software-controlled shutdown mode

Digital To Analog Converters Applications

• Automatic test equipment
• Portable instrumentation
• Process control and servo loops
• Programmable voltage and current sources
• Gain and offset adjustment circuits

Digital To Analog Converters Procurement Notes

Verify the specific suffix BGTE+ corresponds to the TQFN-EP package and industrial temperature range (-40°C to +105°C). Confirm RoHS compliance status as indicated by the '+' designation in official documentation. Ensure compatibility with existing board layouts regarding the 16-pin TQFN footprint and exposed pad connection requirements.

Digital To Analog Converters Selection Notes

Select this component for applications requiring high linearity and low power in a compact form factor. The 16-bit resolution suits precision instrumentation. Consider the MAX5139 if 12-bit resolution is sufficient for lower cost. Verify that the host microcontroller supports the required 3-wire SPI/MICROWIRE/QSPI timing specifications.

Digital To Analog Converters Part Context

The MAX5138BGTE+ belongs to the MAX5138/MAX5139 family of low-power DACs from Analog Devices/Maxim Integrated. This family offers pin-compatible and software-compatible options in 16-bit and 12-bit resolutions. The devices are designed for battery-powered and space-constrained systems requiring high accuracy and minimal power dissipation.

Digital To Analog Converters Replacement Considerations

The MAX5139GTE+ is a software-compatible alternative within the same family offering 12-bit resolution. Both share identical pinouts and serial interfaces. Verify that the reduced resolution of the MAX5139 meets the system's accuracy requirements before substitution.

Digital To Analog Converters FAQ

How does the M/Z pin affect power-up behavior?

Connecting M/Z to AGND resets the DAC output to zero upon power-up. Connecting M/Z to AVDD resets the output to midscale, providing safety for transducer applications.

Can multiple MAX5138 devices be daisy-chained?

Yes, the READY output allows daisy-chaining. Connect the READY pin of one device to the CS pin of the next, while sharing SCLK and DIN lines.

What is the maximum capacitive load the output can drive?

The output buffer can drive up to 200pF directly. For larger capacitive loads, a series resistor is recommended to maintain stability.