Octal Low-Power 16-Bit +/-16.5V Output Serial Input Digital-to-Analog Converter
Product details
Parameters
Package | Pins | Size
Features
- Bipolar Output: ±2V to ±16.5V
- Unipolar Output: 0V to +33V
- 16-Bit Resolution
- Low Power: 14.4mW/Ch (Bipolar Supply)
- Relative Accuracy: 4 LSB Max
- Low Zero/Full-Scale Error
- Before User Calibration: ±10 LSB Max
- After User Calibration: ±1 LSB
- Flexible System Calibration
- Low Glitch: 4nV-s
- Settling Time: 15µs
- Channel Monitor Output
- Programmable Gain: x4/x6
- Programmable Offset
- SPI: Up to 50MHz, 1.8V/3V/5V Logic
- Schmitt Trigger Inputs
- Daisy-Chain with Sleep Mode Enhancement
- Packages: QFN-48 (7x7mm), TQFP-64 (10x10mm)
- APPLICATIONS
- Automatic Test Equipment
- PLC and Industrial Process Control
- Communications
Description
The DAC8718 is a low-power, octal, 16-bit digital-to-analog converter (DAC). With a 5V reference, the output can either be a bipolar ±15V voltage when operating from dual ±15.5V (or higher) power supplies, or a unipolar 0V to +30V voltage when operating from a +30.5V (or higher) power supply. With a 5.5V reference, the output can either be a bipolar ±16.5V voltage when operating from dual ±17V (or higher) power supplies, or a unipolar 0V to +33V voltage when operating from a +33.5V (or higher) power supply. This DAC provides low-power operation, good linearity, and low glitch over the specified temperature range of –40°C to +105°C. This device is trimmed in manufacturing and has very low zero-code and gain error. In addition, system level calibration can be performed to achieve ±1 LSB bipolar zero/full-scale error with bipolar supplies, or ±1 LSB zero code/full-scale error with a unipolar supply, over the entire signal chain. The output range can be offset by using the DAC offset register.
The DAC8718 features a standard, high-speed serial peripheral interface (SPI) that operates at up to 50MHz and is 1.8V, 3V, and 5V logic compatible, to communicate with a DSP or microprocessor. The input data of the device are double-buffered. An asynchronous load input (LDAC) transfers data from the DAC data register to the DAC latch. The asynchronous CLR input sets the output of all eight DACs to AGND. The VMON pin is a monitor output that connects to the individual analog outputs, the offset DAC, the reference buffer outputs, and two external inputs through a multiplexer (mux).
The DAC8718 is pin-to-pin and function-compatible with the DAC8218 (14-bit) and the DAC7718 (12-bit).
Technical documentation
| Type | Title | Date | |
|---|---|---|---|
| * | Datasheet | Octal, 16-bit, low-Power, High-Voltage Output, Serial Input D/A Converter datasheet (Rev. A) | Dec. 15, 2009 |
| Technical articles | DAC Essentials: String theory | May 01, 2013 | |
| User guide | DAC8718EVM User's Guide (Rev. A) | May 11, 2011 |
Design & development
For additional terms or required resources, click any title below to view the detail page where available.Hardware development
Description
The DACxx18EVM features the DAC7718, DAC8218, or DAC8718 digital to analog converter. The EVM provides a quick and easy way to evaluate the functionality and performance of this high resolution serial input Digital to Analog Converter (DAC). The DACxx18EVM is designed to work by default for a (...)
Features
- Bipolar and Unipolar mode of operation is supported
- Contains all support circuitry needed for the DACxx18 family
- Serial interface header to easily attach to TI DSP base communication systems
- Voltage reference options: onboard 5V, onboard 2.5V or external
- Onboard jumpers to control DAC control pins
- (...)
Software development
Features
- Modular design allows additional EVMs to be supported
- Graphical user interface provides easy setup to send signals to a DAC
Design tools & simulation
Features
- Leverages Cadence PSpice Technology
- Preinstalled library with a suite of digital models to enable worst-case timing analysis
- Dynamic updates ensure you have access to most current device models
- Optimized for simulation speed without loss of accuracy
- Supports simultaneous analysis of multiple products
- (...)
Features
- Expedites circuit design with analog-to-digital converters (ADCs) and digital-to-analog converters (DACs)
- Noise calculations
- Common unit translation
- Solves common amplifier circuit design problems
- Gain selections using standard resistors
- Filter configurations
- Total noise for common amplifier configurations
- (...)
CAD/CAE symbols
| Package | Pins | Download |
|---|---|---|
| TQFP (PAG) | 64 | View options |
| VQFN (RGZ) | 48 | View options |
Ordering & quality
- RoHS
- REACH
- Device marking
- Lead finish/Ball material
- MSL rating/Peak reflow
- MTBF/FIT estimates
- Material content
- Qualification summary
- Ongoing reliability monitoring
Recommended products may have parameters, evaluation modules or reference designs related to this TI product.
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