Data converter circuits
Analog-to-digital converter (ADC) and digital-to-analog converter (DAC) circuits that can be quickly modified to meet your specific design needs
Each data converter circuit below includes step-by-step instructions with formulas allowing you to adapt the circuit to meet your unique design requirements. We've provided at least one recommended data converter for each circuit, but you can easily swap it with another device if you've found one that fits better with your design. Our circuits require a basic understanding of data converter concepts, so if you are new to data converter design, we highly recommend reviewing our TI Precision Labs (TIPL) training series.
Analog-to-digital converter (ADC) circuits
Low-power, small size, and cost optimized circuits
This section emphasizes low power ADC and amplifier circuits. Often these circuits total power dissipation is a function of the sampling rate and the documentation will explain this trade off. Frequently, these circuits also use a smaller physical PCB area, so often an example PCB layout and associated PCB area is covered in the document.
Level translation input drive circuits
This section covers amplifier drive circuits that translate input voltage levels to ranges appropriate for the ADC input range. For example, an amplifier drive circuit may show how a ±15V range can be attenuated and shifted for operation with a 5V ADC. Furthermore, this section will show how the amplifier drive circuit is optimized for best settling, noise, and bandwidth.
Low-level sensor input circuits
This section covers circuit design for different kinds of sensors and low-level inputs. For example, the gain scaling and component selection to connect a bridge sensor to an ADC is covered. Furthermore, RTD, thermocouples, and thermistors are covered.
Input protection, filtering and isolation circuits
This section covers how external devices like TVS and Schottky diodes can be used to protect ADC circuits. Furthermore, antialiasing filters and isolation circuits are covered.
Commonly used auxiliary circuits
This section covers circuits that are commonly used with ADC systems. For example, a power supply design that shows how to generate a -0.3V negative supply for an ADC drive amplifier is covered. Other power supply options and ADC reverence drive circuits are also covered.
|Commonly used auxiliary circuits|
|Isolated power supply, low-noise circuit: 5 V, 100 mA|
|Powering a dual-supply op amp circuit with one LDO|
Digital-to-analog converter (DAC) circuits
Circuits and design techniques for high-performance audio systems, optimizing signal-to Noise ratio (SNR), total-harmonic-distortion (THD), and other AC specifications critical for audio applications.
Auxiliary and biasing circuits
Programmable open or closed loop voltage or current sources commonly used in adaptive voltage scaling, comparator, sensor excitation, or other calibration and biasing applications.
High-side, low-side, and bi-directional current source or sink circuits commonly used for both control and biasing applications.
High-voltage and low-voltage single-ended or differential circuits along with options for high-current drive, capacitive load compensation, and positive and negative sense connections.
For a comprehensive collection of all data converter circuits noted above, check out the Analog Engineer's Circuit Cookbook.
Our large portfolio of data converters includes the ADCs and DACs mentioned in the circuits, in addition to digital potentiometers and integrated/special function data converters.