Texas Instruments DAC8811EVM

Overview

DAC8811EVM from Texas Instruments is an evaluation module designed to demonstrate and validate the DAC8811 16-bit multiplying digital-to-analog converter in bipolar ±10-V output configurations. It integrates the DAC8811 (VSSOP-8), OPA2828 dual op amp, REF5025 precision voltage reference, and FT4222 USB-to-SPI bridge for PC-based control. The board supports configurable gain/offset via external resistor networks and enables rapid prototyping of precision analog output stages for test instrumentation and calibration systems.

For engineers reviewing the DAC8811EVM datasheet, DAC8811EVM pinout, DAC8811EVM application, or DAC8811EVM equivalent, this page delivers verified hardware specifications, jumper configuration guidance, SPI interface details, op amp substitution options (HVSSOP/DIP-8), and USB-powered operation with onboard LDOs for VDD (3.3 V) and VREF (2.5 V).

Technical Context

The DAC8811EVM implements a two-stage signal path: the unbuffered current-output DAC8811 feeds into the first OPA2828 amplifier to generate a voltage, then the second stage provides programmable bipolar gain and offset. Default operation uses USB-supplied 3.3-V VDD and 2.5-V VREF through TPS73433-Q1 and REF5025, respectively, with external ±11-V to ±18-V supplies required for OPA2828's VCC/VSS rails.

Jumper-controlled power routing (J9/J10) and FTDI enable/disable (J11) allow flexible sourcing of VDD, VREF, and SPI control. Header J8 exposes SCLK, SDI, and CS signals for external microcontroller-driven SPI access when J11 is shunted, while SMA and banana jack connectors support precise external reference and op amp supply injection.

Key Specifications

Availability

DAC8811EVM is available at Aetrix Electronics and suitable for precision test equipment development, automated calibration system integration, and high-resolution analog output validation requiring stable component supply, traceable sourcing, and long-term lifecycle continuity.

Supply support for DAC8811EVM 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

Texas Instruments is a global semiconductor company specializing in analog, embedded processing, and power management technologies, with over 90 years of innovation in precision analog design.

The DAC8811EVM belongs to TI's precision data converter evaluation platform family, engineered to accelerate validation of high-accuracy DACs in metrology-grade applications where low noise, tight gain/offset control, and flexible op amp interfacing are critical.

FAQ

What is the default output voltage range of the DAC8811EVM?

The DAC8811EVM delivers a default bipolar ±10-V output using the onboard OPA2828 configured with R3 = 2.00 kΩ, R4 = 8.06 kΩ, and R6 = 1.00 kΩ. This range assumes the DAC8811 operates with its internal 2.5-V reference (via REF5025) and 3.3-V VDD. Output scaling can be modified by changing resistor values per the provided transfer equation in the user's guide.

Can I replace the OPA2828 on the DAC8811EVM with another op amp?

Yes - the DAC8811EVM supports op amp substitution via a DIP-8 adapter footprint or direct HVSSOP-8 placement. The board accommodates alternative op amps meeting the same pinout and supply requirements (e.g., ±11-V to ±18-V rails). U2 must be removed, and compatibility depends on bandwidth, input bias, and output swing - confirmed via the OPA2828 datasheet (SBOS671) and schematic Figure 2-4.

How does the DAC8811EVM connect to a host PC and what software is required?

The DAC8811EVM connects via USB-A to Micro-USB cable (included) to a Windows 10 host running the official DAC8811EVM GUI, downloadable from ti.com. The FT4222HQ-D-R bridge handles USB-to-SPI translation, and the installer automatically deploys FTDI drivers and LabVIEW components. Connection status appears as "CONNECTED" in the GUI status bar when properly enumerated.

What power supplies are mandatory versus optional for DAC8811EVM operation?

Mandatory supplies are USB 5-V (J12) for board power and external ±11-V to ±18-V at J1 (VCC) and J2 (VSS) for OPA2828 operation. Optional supplies include external VDD (J4) and VREF (J5); these override onboard LDO outputs only when jumpers J9 and J10 are opened. GND (J3) must always be connected.

Does the DAC8811EVM support external SPI control without using the GUI?

Yes - header J8 provides direct access to DAC8811's SCLK, SDI (PICO), and CS pins. By opening jumper J11 (disabling the FT4222 level shifter), users can drive the DAC8811 directly with an external microcontroller or logic analyzer using standard SPI protocol. Pin definitions are fully documented in Table 2-3 of SLAU151B.