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ADS7887

現行

2.35V-5.25V、10 位元 1.25MSPS、序列 ADC

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產品規格表

ADS7887

現行
產品規格表 立即訂購

產品詳細資料

Resolution (Bits) 10 Sample rate (max) (ksps) 1250 Number of input channels 1 Interface type SPI Architecture SAR Input type Single-ended Rating Catalog Reference mode Supply Input voltage range (max) (V) 5.25 Input voltage range (min) (V) 0 Features Small Size Operating temperature range (°C) -40 to 125 Power consumption (typ) (mW) 3.8 Analog supply voltage (min) (V) 2.35 Analog supply voltage (max) (V) 5.25 Digital supply (min) (V) 2.35 Digital supply (max) (V) 5.25
Resolution (Bits) 10 Sample rate (max) (ksps) 1250 Number of input channels 1 Interface type SPI Architecture SAR Input type Single-ended Rating Catalog Reference mode Supply Input voltage range (max) (V) 5.25 Input voltage range (min) (V) 0 Features Small Size Operating temperature range (°C) -40 to 125 Power consumption (typ) (mW) 3.8 Analog supply voltage (min) (V) 2.35 Analog supply voltage (max) (V) 5.25 Digital supply (min) (V) 2.35 Digital supply (max) (V) 5.25
SOT-23 (DBV) 6 8.12 mm² 2.9 x 2.8 SOT-SC70 (DCK) 6 4.2 mm² 2 x 2.1
  • 1.25-MHz Sample Rate Serial Device
  • 10-Bit Resolution (ADS7887)
  • 8-Bit Resolution (ADS7888)
  • Zero Latency
  • 25-MHz Serial Interface
  • Supply Range: 2.35 V to 5.25 V
  • Typical Power Dissipation at 1.25 MSPS:
    • 3.8 mW at 3-V VDD
    • 8 mw at 5-V VDD
  • ±0.35 LSB INL, DNL (ADS7887)
  • ±0.15 LSB INL, ±0.1 LSB DNL (ADS7888)
  • 61 dB SINAD, –84 dB THD (ADS7887)
  • 49.5 dB SINAD, –67.5 dB THD (ADS7888)
  • Unipolar Input Range: 0 V to VDD
  • Power-Down Current: 1 µA
  • Wide Input Bandwidth: 15 MHz at 3 dB
  • 6-Pin SOT23 and SC70 Packages

All trademarks are the property of their respective owners.

  • 1.25-MHz Sample Rate Serial Device
  • 10-Bit Resolution (ADS7887)
  • 8-Bit Resolution (ADS7888)
  • Zero Latency
  • 25-MHz Serial Interface
  • Supply Range: 2.35 V to 5.25 V
  • Typical Power Dissipation at 1.25 MSPS:
    • 3.8 mW at 3-V VDD
    • 8 mw at 5-V VDD
  • ±0.35 LSB INL, DNL (ADS7887)
  • ±0.15 LSB INL, ±0.1 LSB DNL (ADS7888)
  • 61 dB SINAD, –84 dB THD (ADS7887)
  • 49.5 dB SINAD, –67.5 dB THD (ADS7888)
  • Unipolar Input Range: 0 V to VDD
  • Power-Down Current: 1 µA
  • Wide Input Bandwidth: 15 MHz at 3 dB
  • 6-Pin SOT23 and SC70 Packages

All trademarks are the property of their respective owners.

The ADS7887 device is a 10-bit, 1.25-MSPS, analog-to-digital converter (ADC), and the ADS7888 device is a 8-bit, 1.25-MSPS ADC. These devices include a capacitor-based SAR A/D converter with inherent sample and hold. The serial interface in each device is controlled by the CS and SCLK signals for glueless connections with microprocessors and DSPs. The input signal is sampled with the falling edge of CS, and SCLK is used for conversion and serial data output.

The devices operate from a wide supply range from 2.35 V to 5.25 V. The low power consumption of the devices make them suitable for battery-powered applications. The devices also include a power-saving, power-down feature for when the devices are operated at lower conversion speeds.

The high level of the digital input to the device is not limited to device VDD. This means the digital input can go as high as 5.25 V when device supply is 2.35 V. This feature is useful when digital signals are coming from other circuit with different supply levels. Also this relaxes restriction on power-up sequencing.

The ADS7887 and ADS7888 are available in 6-pin SOT-23 and SC70 packages and are specified for operation from –40°C to 125°C.

The ADS7887 device is a 10-bit, 1.25-MSPS, analog-to-digital converter (ADC), and the ADS7888 device is a 8-bit, 1.25-MSPS ADC. These devices include a capacitor-based SAR A/D converter with inherent sample and hold. The serial interface in each device is controlled by the CS and SCLK signals for glueless connections with microprocessors and DSPs. The input signal is sampled with the falling edge of CS, and SCLK is used for conversion and serial data output.

The devices operate from a wide supply range from 2.35 V to 5.25 V. The low power consumption of the devices make them suitable for battery-powered applications. The devices also include a power-saving, power-down feature for when the devices are operated at lower conversion speeds.

The high level of the digital input to the device is not limited to device VDD. This means the digital input can go as high as 5.25 V when device supply is 2.35 V. This feature is useful when digital signals are coming from other circuit with different supply levels. Also this relaxes restriction on power-up sequencing.

The ADS7887 and ADS7888 are available in 6-pin SOT-23 and SC70 packages and are specified for operation from –40°C to 125°C.
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ADS7888 現行 2.35V-5.25V、8 位元 1.25MSPS、序列 ADC Lower resolution (8-bit), lower INL (0.3)

技術文件

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重要文件 類型 標題 格式選項 日期
* Data sheet ADS788x 10-Bit, 8-Bit, 1.25-MSPS, Micro-Power, Miniature SAR Analog-to-Digital Converters datasheet (Rev. A) PDF | HTML 2016年 8月 24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

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模擬型號

ADS7887 IBIS Model

SLAM094.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。 

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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
SOT-SC70 (DCK) 6 Ultra Librarian
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