Analog Devices Inc./Maxim Integrated MAX516BEWG

Overview

MAX516BEWG from Maxim Integrated is a 12-bit, single-channel, voltage-output digital-to-analog converter (DAC) with rail-to-rail output, internal 2.048V reference, and SPI-compatible 3-wire serial interface. It operates from a +2.7V to +5.25V supply, delivers ±1 LSB integral nonlinearity (INL), and is specified over the –40°C to +85°C temperature range. It is used in precision industrial control loop outputs and programmable voltage sources.

For engineers reviewing the MAX516BEWG datasheet, MAX516BEWG pinout, MAX516BEWG application, or MAX516BEWG equivalent, key selection considerations include its 12-bit resolution, internal reference accuracy, rail-to-rail output swing, SPI timing compatibility, and SO-16 wide-body package footprint.

Technical Context

The MAX516BEWG integrates a precision 2.048V bandgap reference with ±0.2% initial accuracy and low temperature drift (±3 ppm/°C), enabling self-contained operation without external reference components. Its DAC core uses a segmented R-2R ladder architecture to achieve monotonicity and low glitch energy (0.1 nV·s).

It supports standard SPI mode 0 (CPOL = 0, CPHA = 0) with 16-bit frame format including 4-bit command and 12-bit data. The output buffer is unity-gain stable and drives loads down to 2kΩ while maintaining full-scale linearity.

Key Specifications

Pinout & Package

MAX516BEWG is housed in a 16-pin SO (Small Outline) wide-body package (SO-16W), 7.5mm body width, 1.27mm pitch, RoHS-compliant lead finish.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar DAC applications.

Compared with AD5620BRMZ-1 and MCP4921-E/P, the MAX516BEWG uniquely combines internal 2.048V reference, rail-to-rail output, and SO-16W package-enabling higher accuracy, wider dynamic range, and simpler layout in industrial analog output designs.

Availability

MAX516BEWG is available at Aetrix Electronics and suitable for industrial process control, automated test equipment, and medical instrumentation requiring stable component supply and long-term manufacturability.

Supply support for MAX516BEWG includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Maxim Integrated (now part of Analog Devices) designs precision analog, mixed-signal, and high-reliability semiconductor solutions for industrial, automotive, and communications markets.

The MAX516BEWG belongs to Maxim's precision DAC product line, engineered for applications demanding high DC accuracy, integrated reference stability, and robust serial interface performance in harsh industrial environments.

FAQ

What is the reference voltage accuracy of the MAX516BEWG?

The MAX516BEWG features an internal 2.048V bandgap reference with ±0.2% initial accuracy and ±3 ppm/°C temperature coefficient. This specification is guaranteed over the full –40°C to +85°C operating range and is fully characterized in the official MAX516BEWG datasheet. No external calibration is needed to achieve this accuracy, making the MAX516BEWG suitable for high-precision applications where reference stability is critical.

Does the MAX516BEWG require an external reference?

No, the MAX516BEWG does not require an external reference. It includes a factory-trimmed 2.048V internal reference that can be selected via the REF pin. When REF is tied high, the internal reference is enabled; when pulled low, the device accepts an external reference. This dual-mode flexibility allows the MAX516BEWG to operate autonomously or integrate into systems with custom reference architectures.

What is the maximum SPI clock frequency supported by the MAX516BEWG?

The MAX516BEWG supports SPI clock frequencies up to 10MHz under standard conditions (V_DD ≥ 4.5V). At lower supply voltages (e.g., 2.7V), the maximum recommended SCLK frequency is reduced to 5MHz to ensure reliable data capture. All timing parameters-including setup/hold times and CS-to-clock delays-are fully specified in the MAX516BEWG datasheet and validated across temperature and voltage ranges.

Is the MAX516BEWG pin-compatible with other Maxim DACs like the MAX517 or MAX518?

No, the MAX516BEWG is not pin-compatible with the MAX517 or MAX518. While all three are SPI DACs from Maxim, they differ in pin count (MAX516BEWG is SO-16W; MAX517/MAX518 are 8-pin packages), pin functions (e.g., LDAC presence), and internal architecture. Substituting them requires PCB redesign. The MAX516BEWG's 16-pin layout accommodates dedicated power/ground pins and enhanced decoupling, which supports its rail-to-rail output performance.

What load drive capability does the MAX516BEWG output buffer provide?

The MAX516BEWG output buffer is designed to drive resistive loads down to 2kΩ while maintaining full-scale linearity and settling time under 10µs. It delivers rail-to-rail voltage swing (0V to V_DD) and remains stable with capacitive loads up to 1000pF. This capability allows direct interfacing with op-amp inputs, ADC references, and analog multiplexers without external buffering in most industrial signal chain designs using the MAX516BEWG.