Texas Instruments DAC8811EVM-PDK

Overview

DAC8811EVM-PDK from Texas Instruments is an evaluation module designed to demonstrate and validate the DAC8811 16-bit multiplying digital-to-analog converter with unbuffered current output, configured by default for ±10-V bipolar voltage output using the OPA2828 operational amplifier, supporting SPI control via FT4222 USB bridge, onboard 2.5-V REF5025 reference, and 3.3-V LDO-regulated VDD supply.

For engineers reviewing the DAC8811EVM-PDK datasheet, DAC8811EVM-PDK pinout, DAC8811EVM-PDK application, or DAC8811EVM-PDK equivalent, this module enables rapid characterization of DAC8811 performance-including settling time (0.5 µs), full-scale accuracy, gain/offset tuning, and op-amp interface flexibility-under real-world power, reference, and signal conditioning conditions.

Technical Context

The DAC8811EVM-PDK implements a two-stage precision analog signal chain: the DAC8811 generates a proportional current output referenced to VREF (2.5 V), which is converted to voltage by the first OPA2828 amplifier stage, then scaled and inverted by the second stage to deliver a calibrated ±10-V output. Power is derived from USB 5 V, regulated to 3.3 V (VDD) and 2.5 V (VREF) via TPS73433-Q1 and REF5025, respectively.

Control is handled by an FT4222 USB-to-SPI bridge interfacing directly with the DAC8811's SCLK, SDI, and CS pins through header J8; jumper J11 enables or disables the FTDI level shifter. External op-amp substitution is supported via DIP-8 or HVSSOP-8 footprints, with configurable gain/offset resistors (R3, R4, R6) enabling custom output ranges per Equation (1) in the user's guide.

Key Specifications

Availability

DAC8811EVM-PDK is available at Aetrix Electronics and suitable for precision DAC validation, analog front-end prototyping, and high-resolution signal generation applications requiring stable component supply, traceable sourcing, and long-term evaluation platform continuity.

Supply support for DAC8811EVM-PDK 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 high-performance analog solutions, with over 90 years of innovation in precision data converters and evaluation platforms.

The DAC8811EVM-PDK belongs to TI's precision DAC evaluation module product line, engineered to accelerate design-in of high-accuracy digital-to-analog conversion in test equipment, medical instrumentation, and industrial control systems.

FAQ

What is the primary function of the DAC8811EVM-PDK?

The DAC8811EVM-PDK is an evaluation module built around the DAC8811 16-bit multiplying DAC, providing a complete, ready-to-use platform for characterizing its current-output performance, verifying SPI interface timing, and validating analog signal conditioning circuits. It includes the DAC8811IBDGKR, OPA2828IDGNT, REF5025AID, and FT4222HQ-D-R, enabling immediate ±10-V output testing without external hardware. The DAC8811EVM-PDK supports both GUI-driven and direct SPI control modes.

Does the DAC8811EVM-PDK require external power supplies beyond USB?

Yes - while USB provides 5 V for board regulation (to 3.3 V VDD and 2.5 V VREF), the OPA2828 operational amplifier requires external bipolar supplies: +11 V to +18 V at J1 (VCC) and –11 V to –18 V at J2 (VSS). These are mandatory for proper ±10-V output operation. The DAC8811EVM-PDK documentation explicitly states that VCC and VSS must be provided externally; no onboard regulation exists for these rails.

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

Yes - the DAC8811EVM-PDK includes a DIP-8 adapter footprint and supports HVSSOP-8 or DIP-8 packaged op amps. U2 (OPA2828IDGNT) can be removed and replaced; resistor network R3/R4/R6 remains configurable to adapt gain and offset for the new device. The user's guide confirms compatibility with alternative op amps and provides pinout diagrams for DIP-8 mounting. This flexibility allows evaluation of different bandwidth, noise, or supply-range trade-offs using the same DAC8811EVM-PDK platform.

How is SPI communication implemented on the DAC8811EVM-PDK?

SPI communication is implemented via the FT4222HQ-D-R USB-to-SPI bridge, which connects to the DAC8811's SCLK, SDI (PICO), and CS pins through level-shifting circuitry. Header J8 exposes these signals for external microcontroller control when jumper J11 is shorted to disable the FTDI path. The DAC8811EVM-PDK GUI uses the FT4222 to send standard SPI frames (CPOL=0, CPHA=0) at up to 20 MHz, matching the DAC8811's maximum SCLK specification. All timing and protocol details align with the DAC8811IBDGKR datasheet.

What software tools are included with the DAC8811EVM-PDK?

The DAC8811EVM-PDK ships with the DAC8811EVM GUI - a Windows 10-compatible LabVIEW-based application that provides register-level access to the DAC8811, real-time value entry, configuration save/load (.cfg files), and status monitoring (e.g., CONNECTED/DEMO mode). It installs FTDI USB drivers automatically and requires no additional SDKs. No third-party IDEs, compilers, or firmware flashing tools are needed - the DAC8811EVM-PDK GUI handles all low-level SPI transactions transparently.