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ADS7888

AKTIV

Serieller ADC, 2,35-5,25 V, 8 Bit, 1,25 MSPS

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ADS7888

AKTIV
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Produktdetails

Resolution (Bits) 8 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) 8 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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Top-Dokumentation Typ Titel Format-Optionen Datum
* Data sheet ADS788x 10-Bit, 8-Bit, 1.25-MSPS, Micro-Power, Miniature SAR Analog-to-Digital Converters datasheet (Rev. A) PDF | HTML 24 Aug 2016
E-book Best of Baker's Best: Precision Data Converters -- SAR ADCs 21 Mai 2015
Application note Determining Minimum Acquisition Times for SAR ADCs, part 2 17 Mär 2011
Application note Determining Minimum Acquisition Times for SAR ADCs, part 1 (Rev. A) 10 Nov 2010

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