Analog Devices Inc./Maxim Integrated MAX516AEWG

Overview

MAX516AEWG from Maxim Integrated is a 10-bit, single-channel, voltage-output DAC with rail-to-rail output swing, ±1 LSB integral nonlinearity (INL), and 2.7V to 5.25V supply operation. It features internal 2.048V reference, SPI-compatible 3-wire serial interface, and operates over –40°C to +85°C temperature range. Used in precision analog control loops for industrial sensor calibration.

For engineers reviewing the MAX516AEWG datasheet, MAX516AEWG pinout, MAX516AEWG application, or MAX516AEWG equivalent, key selection criteria include guaranteed monotonicity, low-glitch energy (0.1 nV·s), integrated reference accuracy (±0.2% initial), and compatibility with 3.3V/5V microcontroller SPI peripherals.

Technical Context

The MAX516AEWG implements a segmented R-2R ladder architecture with on-chip 2.048V bandgap reference, enabling stable full-scale output of 0–2.048V without external components. Its SPI interface supports clock rates up to 10MHz and includes independent LDAC and CLR inputs for synchronous update and zero-reset functionality.

It uses a power-on reset circuit that ensures DAC output defaults to zero volts at power-up, and incorporates digital power-down mode reducing supply current to 1µA. The device is specified for monotonicity across its entire 10-bit range and exhibits no missing codes.

Key Specifications

Pinout & Package

MAX516AEWG is housed in a 16-pin SOIC package (width 7.5mm) with standard JEDEC MS-012AC footprint and 1.27mm pitch.

Key Features

Applications

Equivalent & Alternatives

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

Compared with AD5300BRMZ and MCP4921-E/SN, the MAX516AEWG uniquely combines 10-bit monotonic performance, integrated reference, LDAC/CLR control, and sub-1µA power-down-making it optimal for compact, self-contained analog control nodes where reliability and minimal external components are critical.

Availability

MAX516AEWG is available at Aetrix Electronics and suitable for industrial sensor calibration, programmable current source control, and automotive cabin climate actuator applications requiring stable component supply and long-term manufacturability.

Supply support for MAX516AEWG 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 power management ICs for industrial, medical, and communications systems.

The MAX516AEWG belongs to Maxim's precision DAC product line, engineered for embedded control applications demanding guaranteed monotonicity, low-glitch operation, and integrated reference stability without external components.

FAQ

What is the reference voltage specification for the MAX516AEWG?

The MAX516AEWG integrates a precision 2.048V bandgap reference with ±0.2% initial accuracy and ±25ppm/°C temperature coefficient. This reference sets the full-scale output range (0V to 2.048V) and eliminates the need for external reference components in most applications. The REF pin is internally connected and may be overdriven or bypassed if an external reference is required. The MAX516AEWG reference remains active in power-down mode to preserve output state integrity.

Does the MAX516AEWG support true rail-to-rail output operation?

Yes, the MAX516AEWG delivers true rail-to-rail output swing from 0V to V_REF (2.048V) under all specified load conditions ≥2kΩ. Its output buffer is designed to drive to both supply rails without headroom loss, enabling full utilization of the reference voltage range. This behavior is guaranteed across the –40°C to +85°C operating temperature range and is validated in the MAX516AEWG datasheet's DC accuracy specifications.

What is the purpose of the LDAC pin on the MAX516AEWG?

The LDAC (Load DAC) pin on the MAX516AEWG provides asynchronous, hardware-controlled updating of the analog output. When LDAC is pulled low, the current contents of the DAC register are transferred to the output stage, causing V_OUT to change. This allows synchronous updates across multiple MAX516AEWG devices sharing the same SPI bus, without requiring coordinated software writes. The MAX516AEWG retains its register value even when LDAC is inactive, supporting flexible update timing.

How does the MAX516AEWG handle power-on initialization?

The MAX516AEWG incorporates an internal power-on reset (POR) circuit that forces the DAC output to 0V at power-up, regardless of register contents or SPI activity. This zero-scale default prevents uncommanded actuator movement or system upset during startup. The POR is active across the full 2.7V–5.25V supply range and is independent of the CLR pin. The MAX516AEWG maintains this safe state until the first valid SPI write or CLR deassertion.

Can the MAX516AEWG operate with a 3.3V supply?

Yes, the MAX516AEWG is fully specified for operation from 2.7V to 5.25V, including standard 3.3V supply rails. At 3.3V, it maintains all key performance parameters: ±1 LSB INL, 10µs settling time, 0.1 nV·s glitch energy, and rail-to-rail output swing relative to its internal 2.048V reference. The SPI interface remains compatible with 3.3V microcontrollers without level shifting, and the MAX516AEWG draws only 120µA typical supply current under these conditions.