ADS7886
器件描述：12-Bit, 1-MSPS, MICRO-POWER, MINIATURE SAR ANALOG-TO-DIGITAL CONVERTERS
器件厂商：TI [Texas Instruments]
厂商主页：http://www.ti.com/
文件大小：1296.24KB，共17页
Sponsor by e络盟器件资料摘要：
FEATURES APPLICATIONS
DESCRIPTION
ADS7886
SLAS492 – SEPTEMBER 2005
12-Bit, 1-MSPS, MICRO-POWER, MINIATURE
SAR ANALOG-TO-DIGITAL CONVERTERS
• Base Band Converters in Radio• 1-MHz Sample Rate Serial Device
Communication• 12-Bit Resolution
• Motor Current/Bus Voltage Sensors in Digital• Zero Latency
Drives• 20-MHz Serial Interface
• Optical Networking (DWDM, MEMS Based
• Supply Range: 2.35 V to 5.25 V Switching)
• Typical Power Dissipation at 1 MSPS: • Optical Sensors
• Battery Powered Systems– 3.9 mW at 3-V V DD
• Medical Instrumentations– 7.5 mW at 5-V V DD
• High-Speed Data Acquisition Systems• INL ± 1.25 LSB Maximum, ± 0.65 LSB (Typical)
• High-Speed Closed-Loop Systems• DNL ± 1 LSB Maximum, +0.4 / -0.65 LSB
(Typical)
• Typical AC Performance:
72.25 dB SINAD, -84 dB THD
• Unipolar Input Range: 0 V to V DD
• Power Down Current: 1 µ A
• Wide Input Bandwidth: 15 MHz at 3 dB
• 6-Pin SOT23 and SC70 Packages
The ADS7886 is a 12-bit, 1-MSPS analog-to-digital converter (ADC). The device includes 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 device operates from a wide supply range from 2.35 V to 5.25 V. The low power consumption of the device
makes it suitable for battery-powered applications. The device also includes a powerdown feature for power
saving at lower conversion speeds.
The high level of the digital input to the device is not limited to device V DD . 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 ADS7886 is available in 6-pin SOT23 and SC70 packages and is 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 V DD to 3.6 V DD ) ADS7886 (2.35 V DD to 5.25 V DD )
10-Bit ADS7867 (1.2 V DD to 3.6 V DD ) ADS7887 (2.35 V DD to 5.25 V DD )
8-Bit ADS7868 (1.2 V DD to 3.6 V DD ) ADS7888 (2.35 V DD to 5.25 V DD )
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.
DESCRIPTION
ADS7886
SLAS492 – SEPTEMBER 2005
12-Bit, 1-MSPS, MICRO-POWER, MINIATURE
SAR ANALOG-TO-DIGITAL CONVERTERS
• Base Band Converters in Radio• 1-MHz Sample Rate Serial Device
Communication• 12-Bit Resolution
• Motor Current/Bus Voltage Sensors in Digital• Zero Latency
Drives• 20-MHz Serial Interface
• Optical Networking (DWDM, MEMS Based
• Supply Range: 2.35 V to 5.25 V Switching)
• Typical Power Dissipation at 1 MSPS: • Optical Sensors
• Battery Powered Systems– 3.9 mW at 3-V V DD
• Medical Instrumentations– 7.5 mW at 5-V V DD
• High-Speed Data Acquisition Systems• INL ± 1.25 LSB Maximum, ± 0.65 LSB (Typical)
• High-Speed Closed-Loop Systems• DNL ± 1 LSB Maximum, +0.4 / -0.65 LSB
(Typical)
• Typical AC Performance:
72.25 dB SINAD, -84 dB THD
• Unipolar Input Range: 0 V to V DD
• Power Down Current: 1 µ A
• Wide Input Bandwidth: 15 MHz at 3 dB
• 6-Pin SOT23 and SC70 Packages
The ADS7886 is a 12-bit, 1-MSPS analog-to-digital converter (ADC). The device includes 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 device operates from a wide supply range from 2.35 V to 5.25 V. The low power consumption of the device
makes it suitable for battery-powered applications. The device also includes a powerdown feature for power
saving at lower conversion speeds.
The high level of the digital input to the device is not limited to device V DD . 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 ADS7886 is available in 6-pin SOT23 and SC70 packages and is 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 V DD to 3.6 V DD ) ADS7886 (2.35 V DD to 5.25 V DD )
10-Bit ADS7867 (1.2 V DD to 3.6 V DD ) ADS7887 (2.35 V DD to 5.25 V DD )
8-Bit ADS7868 (1.2 V DD to 3.6 V DD ) ADS7888 (2.35 V DD to 5.25 V DD )
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.