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ADS7888SDBVTG4 Datasheet(PDF) 1 Page - Burr-Brown (TI) |
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ADS7888SDBVTG4 Datasheet(HTML) 1 Page - Burr-Brown (TI) |
1 / 23 page BurrBrown Products from Texas Instruments FEATURES APPLICATIONS DESCRIPTION ADS7887 ADS7888 SLAS468 – JUNE 2005 10-/8-Bit, 1.25-MSPS, MICRO-POWER, MINIATURE SAR ANALOG-TO-DIGITAL CONVERTERS • Base Band Converters in Radio Communi- • 1.25-MHz Sample Rate Serial Device cation • 10-Bit Resolution – ADS7887 • Motor Current/Bus Voltage Sensors in Digital • 8-Bit Resolution – ADS7888 Drives • Zero Latency • Optical Networking (DWDM, MEMS Based • 25-MHz Serial Interface Switching) • Supply Range: 2.35 V to 5.25 V • Optical Sensors • Battery Powered Systems • Typical Power Dissipation at 1.25 MSPS: • Medical Instrumentations – 3.8 mW at 3-V VDD • High-Speed Data Acquisition Systems – 8 mw at 5-V VDD • High-Speed Closed-Loop Systems • ±0.35 LSB INL, DNL – ADS7887 • ±0.15 LSB INL, ±0.1 LSB DNL – ADS7888 • 61dB SINAD, -84 dB THD – ADSA7887 • 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 The ADS7887 is a 10-bit, 1.25-MSPS analog-to-digital converter (ADC), and the ADS7888 is a 8-bit, 1.25-MSPS ADC. The 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 powerdown 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 SOT23 and SC70 packages and are specified for operation from -40°C to 125°C. Micro-Power Miniature SAR Converter Family BIT < 300 KSPS 300 KSPS – 1.25 MSPS 12-Bit ADS7866 (1.2 VDD to 3.6 VDD) ADS7886 (2.35 VDD to 5.25 VDD) 10-Bit ADS7867 (1.2 VDD to 3.6 VDD) ADS7887 (2.35 VDD to 5.25 VDD) 8-Bit ADS7868 (1.2 VDD to 3.6 VDD) ADS7888 (2.35 VDD to 5.25 VDD) Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. PRODUCTION DATA information is current as of publication date. Copyright © 2005, Texas Instruments Incorporated Products conform to specifications per the terms of the Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. |
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