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數據轉換器
數位轉類比轉換器 (DAC)
精密 DAC (≤10 MSPS)

DAC7718

現行

八路、低功耗、12 位元 +/-16.5V 輸出串聯輸入數位轉類比轉換器

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功能與所比較的裝置相似
DAC61408 現行 具有整合式內部參考的 8 通道、12 位元高電壓輸出 DAC Smaller 6mm x 6mm package with integrated reference

DAC7718

現行
產品規格表 立即訂購

產品詳細資料

Resolution (Bits) 12 Number of DAC channels 8 Interface type SPI Output type Buffered Voltage Output voltage range (V) -16.5 to 16.5 INL (max) (±LSB) 1 Settling time (µs) 15 Reference type Ext Architecture String Rating Catalog Features On-chip Offset and Gain Calibration, SDO Sample/update rate (Msps) 0.066 Power consumption (typ) (mW) 115 Operating temperature range (°C) -40 to 85
Resolution (Bits) 12 Number of DAC channels 8 Interface type SPI Output type Buffered Voltage Output voltage range (V) -16.5 to 16.5 INL (max) (±LSB) 1 Settling time (µs) 15 Reference type Ext Architecture String Rating Catalog Features On-chip Offset and Gain Calibration, SDO Sample/update rate (Msps) 0.066 Power consumption (typ) (mW) 115 Operating temperature range (°C) -40 to 85
TQFP (PAG) 64 144 mm² 12 x 12 VQFN (RGZ) 48 49 mm² 7 x 7
  • 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
  • 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).

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).
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技術文件

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重要文件 類型 標題 格式選項 日期
* Data sheet Octal, 12-Bit, Low-Power, High-Voltage Output, Serial Input D/A Converter datasheet (Rev. A) 2009年 12月 15日
Analog Design Journal 3Q 2011 Issue Analog Applications Journal 2011年 9月 16日
Analog Design Journal Isolated RS-485 transceivers support DMX512 stage lighting & special-effects app 2011年 9月 16日
EVM User's guide DAC7718EVM User Guide (Rev. A) 2011年 5月 11日
Analog Design Journal The IBIS model, Part 2: Determining the total quality of an IBIS model 2011年 3月 14日

設計與開發

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開發板

DAC7718EVM — DAC7718 評估模組

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 (...)

使用指南: PDF
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開發板

DAC8718EVM — DAC8718 評估模組

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 (...)

使用指南: PDF
TI.com 無法提供
支援軟體

DXP — DXP EVM GUI

DAC Exerciser Program (DXP)is a software tool from Texas Instruments for evaluating DACs without the requirements of expensive pattern generators or writing complex software. When used with a Texas Instruments DAC EVM and a modular motherboard, it allows for simple and easy digital signal (...)

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模擬型號

DAC7718 IBIS Model

SBAM088.ZIP (82 KB) - IBIS Model
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計算工具

ANALOG-ENGINEER-CALC — 類比工程師計算機

類比工程師的計算機旨在加速類比電路設計工程師定期使用的許多重複計算。此基於 PC 的工具提供圖形介面，列出各種常見計算，從使用回饋電阻器設定運算放大器增益到選擇適當的電路設計元件以穩定類比數位轉換器 (ADC) 驅動緩衝電路。

除了作為獨立工具使用外，此計算機還與類比工程師口袋參考中描述的概念相得益彰。

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設計工具

ADC-DAC-TO-VREF-SELECT-DESIGN-TOOL — The ADC-TO-VREF-SELECT tool enables the pairing of TI ADCs, DACs, and series voltage references.

The ADC-TO-VREF-SELECT tool enables the pairing of TI analog-to-digital converters (ADCs) and series voltage references. Users can select an ADC device and the desired reference voltage, and the tool will list up to two voltage reference recommendations.
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模擬工具

PSPICE-FOR-TI — PSpice® for TI 設計與模擬工具

PSpice® for TI 是有助於評估類比電路功能的設計和模擬環境。這款全功能設計和模擬套件使用 Cadence® 的類比分析引擎。PSpice for TI 包括業界最大的模型庫之一，涵蓋我們的類比和電源產品組合，以及特定類比行為模型，且使用無需支付費用。

PSpice for TI 設計和模擬環境可讓您使用其內建函式庫來模擬複雜的混合訊號設計。在進行佈局和製造之前，建立完整的終端設備設計和解決方案原型，進而縮短上市時間並降低開發成本。 

在 PSpice for TI 設計與模擬工具中，您可以搜尋 TI (...)
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模擬工具

TINA-TI — 基於 SPICE 的類比模擬程式

TINA-TI provides all the conventional DC, transient and frequency domain analysis of SPICE and much more. TINA has extensive post-processing capability that allows you to format results the way you want them. Virtual instruments allow you to select input waveforms and probe circuit nodes voltages (...)
使用指南: PDF
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封裝 針腳 CAD 符號、佔位空間與 3D 模型
TQFP (PAG) 64 Ultra Librarian
VQFN (RGZ) 48 Ultra Librarian
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