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類比轉數位轉換器 (ADC)
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ADS7867

現行

1.2V、10 位元 240KSPS、序列 ADC

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產品規格表

ADS7867

現行
產品規格表 立即訂購

產品詳細資料

Resolution (Bits) 10 Sample rate (max) (ksps) 240 Number of input channels 1 Interface type SPI Architecture SAR Input type Single-ended Rating Catalog Reference mode Supply Input voltage range (max) (V) 3.6 Input voltage range (min) (V) 0 Features Small Size Operating temperature range (°C) -40 to 85 Power consumption (typ) (mW) 0.22 Analog supply voltage (min) (V) 1.2 Analog supply voltage (max) (V) 3.6 SNR (dB) 61.8 Digital supply (min) (V) 1.2 Digital supply (max) (V) 3.6
Resolution (Bits) 10 Sample rate (max) (ksps) 240 Number of input channels 1 Interface type SPI Architecture SAR Input type Single-ended Rating Catalog Reference mode Supply Input voltage range (max) (V) 3.6 Input voltage range (min) (V) 0 Features Small Size Operating temperature range (°C) -40 to 85 Power consumption (typ) (mW) 0.22 Analog supply voltage (min) (V) 1.2 Analog supply voltage (max) (V) 3.6 SNR (dB) 61.8 Digital supply (min) (V) 1.2 Digital supply (max) (V) 3.6
SOT-23 (DBV) 6 8.12 mm² 2.9 x 2.8
  • Single 1.2-V to 3.6-V Supply Operation
  • High Throughput
    • 200/240/280KSPS for 12/10/8-Bit VDD 1.6 V
    • 100/120/140KSPS for 12/10/8-Bit VDD 1.2 V
  • ±1.5LSB INL, 12-Bit NMC (ADS7866)
  • 71 dB SNR, –83 dB THD at fIN = 30 kHz (ADS7866)
  • Synchronized Conversion with SCLK
  • SPI Compatible Serial Interface
  • No Pipeline Delays
  • Low Power
    • 1.39 mW Typ at 200 KSPS, VDD = 3.6 V
    • 0.39 mW Typ at 200 KSPS, VDD = 1.6 V
    • 0.22 mW Typ at 100 KSPS, VDD = 1.2 V
  • Auto Power-Down: 8 nA Typ, 300 nA Max
  • 0 V to VDD Unipolar Input Range
  • 6-Pin SOT-23 Package
  • APPLICATIONS
    • Battery Powered Systems
    • Isolated Data Acquisition
    • Medical Instruments
    • Portable Communication
    • Portable Data Acquisition Systems
    • Automatic Test Equipment
  • Single 1.2-V to 3.6-V Supply Operation
  • High Throughput
    • 200/240/280KSPS for 12/10/8-Bit VDD 1.6 V
    • 100/120/140KSPS for 12/10/8-Bit VDD 1.2 V
  • ±1.5LSB INL, 12-Bit NMC (ADS7866)
  • 71 dB SNR, –83 dB THD at fIN = 30 kHz (ADS7866)
  • Synchronized Conversion with SCLK
  • SPI Compatible Serial Interface
  • No Pipeline Delays
  • Low Power
    • 1.39 mW Typ at 200 KSPS, VDD = 3.6 V
    • 0.39 mW Typ at 200 KSPS, VDD = 1.6 V
    • 0.22 mW Typ at 100 KSPS, VDD = 1.2 V
  • Auto Power-Down: 8 nA Typ, 300 nA Max
  • 0 V to VDD Unipolar Input Range
  • 6-Pin SOT-23 Package
  • APPLICATIONS
    • Battery Powered Systems
    • Isolated Data Acquisition
    • Medical Instruments
    • Portable Communication
    • Portable Data Acquisition Systems
    • Automatic Test Equipment

The ADS7866/67/68 are low power, miniature, 12/10/8-bit A/D converters each with a unipolar, single-ended input. These devices can operate from a single 1.6 V to 3.6 V supply with a 200-KSPS throughput for ADS7866. In addition, these devices can maintain at least a 100-KSPS throughput with a supply as low as 1.2 V.

The sampling, conversion, and activation of digital output SDO are initiated on the falling edge of CS\. The serial clock SCLK is used for controlling the conversion rate and shifting data out of the converter. Furthermore, SCLK provides a mechanism to allow digital host processors to synchronize with the con- verter. These converters interface with micro-processors or DSPs through a high-speed SPI compatible serial interface. There are no pipeline delays associated with the device.

The minimum conversion time is determined by the frequency of the serial clock input, SCLK, while the maximum frequency of SCLK is determined by the minimum sampling time required to charge the input capacitance to 12/10/8-bit accuracy for the ADS7866/67/68, respectively. The maximum throughput is determined by how often a conversion is initiated when the minimum sampling time is met and the maximum SCLK frequency is used. Each device automatically powers down after each conversion, which allows each device to save power when the throughput is reduced while using the maximum SCLK frequency.

The converter reference is taken internally from the supply. Hence, the analog input range for these devices is 0 V to VDD.

These devices are available in a 6-pin SOT-23 package and are characterized over the industrial –40°C to 85°C temperature range.

The ADS7866/67/68 are low power, miniature, 12/10/8-bit A/D converters each with a unipolar, single-ended input. These devices can operate from a single 1.6 V to 3.6 V supply with a 200-KSPS throughput for ADS7866. In addition, these devices can maintain at least a 100-KSPS throughput with a supply as low as 1.2 V.

The sampling, conversion, and activation of digital output SDO are initiated on the falling edge of CS\. The serial clock SCLK is used for controlling the conversion rate and shifting data out of the converter. Furthermore, SCLK provides a mechanism to allow digital host processors to synchronize with the con- verter. These converters interface with micro-processors or DSPs through a high-speed SPI compatible serial interface. There are no pipeline delays associated with the device.

The minimum conversion time is determined by the frequency of the serial clock input, SCLK, while the maximum frequency of SCLK is determined by the minimum sampling time required to charge the input capacitance to 12/10/8-bit accuracy for the ADS7866/67/68, respectively. The maximum throughput is determined by how often a conversion is initiated when the minimum sampling time is met and the maximum SCLK frequency is used. Each device automatically powers down after each conversion, which allows each device to save power when the throughput is reduced while using the maximum SCLK frequency.

The converter reference is taken internally from the supply. Hence, the analog input range for these devices is 0 V to VDD.

These devices are available in a 6-pin SOT-23 package and are characterized over the industrial –40°C to 85°C temperature range.
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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 1.2-V 12/10/8-Bit 200-KSPS/100-KSPS MICRO-POWER MINIATURE ADC s/Serial Interface datasheet 2005年 7月 1日
E-book Best of Baker's Best: Precision Data Converters -- SAR ADCs 2015年 5月 21日
Application note Determining Minimum Acquisition Times for SAR ADCs, part 2 2011年 3月 17日
Application note Determining Minimum Acquisition Times for SAR ADCs, part 1 (Rev. A) 2010年 11月 10日
Application note Interfacing the ADS786x to TMS470 Processors 2006年 7月 10日
Application note Interfacing the ADS786x to the MSP430F2013 2006年 6月 15日

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模擬型號

ADS7867 IBIS Model

SLAM154.ZIP (27 KB) - IBIS Model
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計算工具

ANALOG-ENGINEER-CALC — PC software analog engineer's calculator

The analog engineer’s calculator is designed to speed up many of the repetitive calculations that analog circuit design engineers use on a regular basis. This PC-based tool provides a graphical interface with a list of various common calculations ranging from setting operational-amplifier (...)

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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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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 (...)
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SOT-23 (DBV) 6 Ultra Librarian
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