DAC7718
- Bipolar Output: ±2V to ±16.5V
- Unipolar Output: 0V to +33V
- 12-Bit Resolution
- Low Power: 14.4mW/Ch (Bipolar Supply)
- Relative Accuracy: 1 LSB Max
- Low Zero/Full-Scale Error: ±1 LSB Max
- 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
The DAC7718 is a low-power, octal, 12-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 over the entire signal chain. The output range can be offset by using the DAC offset register.
The DAC7718 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 DAC7718 is pin-to-pin and function-compatible with the DAC8718 (16-bit) and the DAC8218 (14-bit).
技術資料
| 上位の文書 | タイプ | タイトル | フォーマットオプション | 最新の英語版をダウンロード | 日付 | |
|---|---|---|---|---|---|---|
| * | データシート | Octal, 12-Bit, Low-Power, High-Voltage Output, Serial Input D/A Converter データシート (Rev. A) | 2009/12/15 | |||
| アナログ デザイン ジャーナル | Isolated RS-485 transceivers support DMX512 stage lighting & special-effects app | 2011/09/16 | ||||
| アナログ デザイン ジャーナル | 3Q 2011 Issue Analog Applications Journal | 2011/09/16 | ||||
| アナログ デザイン ジャーナル | The IBIS model, Part 2: Determining the total quality of an IBIS model | 2011/03/14 |
設計と開発
その他のアイテムや必要なリソースを参照するには、以下のタイトルをクリックして詳細ページをご覧ください。
DAC7718EVM — DAC7718 評価モジュール
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 (...)
DAC8718EVM — DAC8718 評価モジュール
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 (...)
DXP — DXP EVM GUI
DAC Exerciser Program (DXP)は、高価なパターン ジェネレーターや複雑なソフトウェアを必要とせずにDACを評価できる、テキサス インスツルメンツ社のソフトウェアツールです。テキサス インスツルメンツ社のDAC EVMとモジュラー マザーボードと併用することで、測定や評価を目的としたアナログ出力を生成するためのDAC用のデジタル信号を簡単に作成することができます。
ADC-DAC-TO-VREF-SELECT-DESIGN-TOOL — The ADC-TO-VREF-SELECT tool enables the pairing of TI ADCs, DACs, and series voltage references.
| パッケージ | ピン数 | CAD シンボル、フットプリント、および 3D モデル |
|---|---|---|
| VQFN (RGZ) | 48 | Ultra Librarian |
| TQFP (PAG) | 64 | Ultra Librarian |
購入と品質
推奨製品には、この TI 製品に関連するパラメータ、評価基板、またはリファレンス デザインが存在する可能性があります。