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

DAC8218

現行

八、低功耗、14 位元 +/-16.5V 輸出串聯輸入數位轉類比轉換器

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產品規格表

DAC8218

現行
產品規格表 立即訂購

產品詳細資料

Resolution (Bits) 14 Number of DAC channels 8 Interface type SPI Output type Buffered Voltage Output voltage range (V) -15 to 15, 0 to 30 INL (max) (±LSB) 2 Settling time (µs) 15 Reference type Ext Architecture String Rating Catalog Features On-chip Offset and Gain Calibration, Reset to Mid-Scale, SDO Sample/update rate (Msps) 0.066 Power consumption (typ) (mW) 115 Operating temperature range (°C) -40 to 105
Resolution (Bits) 14 Number of DAC channels 8 Interface type SPI Output type Buffered Voltage Output voltage range (V) -15 to 15, 0 to 30 INL (max) (±LSB) 2 Settling time (µs) 15 Reference type Ext Architecture String Rating Catalog Features On-chip Offset and Gain Calibration, Reset to Mid-Scale, SDO Sample/update rate (Msps) 0.066 Power consumption (typ) (mW) 115 Operating temperature range (°C) -40 to 105
TQFP (PAG) 64 144 mm² (12 mm × 12 mm) VQFN (RGZ) 48 49 mm² (7 mm × 7 mm)
  • Bipolar Output: ±2V to ±16.5V
  • Unipolar Output: 0V to +33V
  • 14-Bit Resolution
  • Low Power: 14.4mW/Ch (Bipolar Supply)
  • Relative Accuracy: 1 LSB Max
  • Low Zero/Full-Scale Error
    • Before User Calibration: ±2.5 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
  • Bipolar Output: ±2V to ±16.5V
  • Unipolar Output: 0V to +33V
  • 14-Bit Resolution
  • Low Power: 14.4mW/Ch (Bipolar Supply)
  • Relative Accuracy: 1 LSB Max
  • Low Zero/Full-Scale Error
    • Before User Calibration: ±2.5 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

The DAC8218 is a low-power, octal, 14-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 DAC8218 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 DAC8218 is pin-to-pin and function-compatible with the DAC8718 (16-bit) and the DAC7718 (12-bit).

The DAC8218 is a low-power, octal, 14-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 DAC8218 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 DAC8218 is pin-to-pin and function-compatible with the DAC8718 (16-bit) and the DAC7718 (12-bit).
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重要文件 類型 標題 格式選項 下載最新的英文版本 日期
* 資料表 Octal, 14-Bit, Low-Power, High-Voltatge Output, Serial Input D/A Converter datasheet (Rev. A) 2009/12/15

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DAC8218EVM — DAC8218 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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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
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DXP — DXP EVM GUI

DAC 操作器程序 (DXP) 是一款德州儀器的軟體工具，無需昂貴的模式產生器或編寫複雜軟體，即可評估 DAC。搭配德州儀器 DAC EVM 和模組化主機板使用時，可為 DAC 產生簡單易用的數位訊號，以產生用於量測和評估用途的類比輸出。

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模擬型號

DAC8218 IBIS Model

SBAM089.ZIP (82 KB) - IBIS 模型
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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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TQFP (PAG) 64 Ultra Librarian
VQFN (RGZ) 48 Ultra Librarian
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