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ADS7946SRTET Datasheet(PDF) 1 Page - Texas Instruments |
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ADS7946SRTET Datasheet(HTML) 1 Page - Texas Instruments |
1 / 49 page SPI AV D D DVDD GND AIN0P AIN1N AIN0N AIN1P PDEN SAR ADC SCLK SDO CS REFGND REF CHSEL MUX S/H ADS7945 SPI AV D D DVDD GND AIN0 AIN1GND AIN0GND AIN1 PDEN SAR ADC SCLK SDO CS REFGND REF CHSEL MUX S/H ADS7946 ADS7945 ADS7946 www.ti.com SBAS539B – JUNE 2011 – REVISED SEPTEMBER 2011 14-Bit, 2 MSPS, Dual-Channel, Differential/Single-Ended, Ultralow-Power Analog-to-Digital Converters Check for Samples: ADS7945, ADS7946 1 FEATURES DESCRIPTION The ADS7945/6 are 14-bit, 2 MSPS analog-to-digital 23 • Sample Rate: 2 MSPS converters (ADCs), with differential and single-ended • 14-Bit, Pin-Compatible with 8/10/12-bit inputs, respectively. The devices operate at a 2 ADS7947/8/9 Family (ADS7946) MSPS sample rate with a standard 16-clock data • Outstanding Performance: frame. The devices feature both outstanding dc precision and excellent dynamic performance; the – SNR: 84 dB (ADS7945) ADS7946 is pin-compatible with the 8/10/12-bit – No Missing Codes ADS7947/8/9 devices. The devices include a – INL: 1.5 LSB (max) (ADS7945) two-channel input multiplexer and a low-power successive approximation register (SAR) ADC with • Low Power: an inherent sample-and-hold (S/H) input stage. – 11.6 mW at 2 MSPS Operation The ADS7945/6 support a wide analog supply range – Auto Power-Down at Lower Speeds: that allows the full-scale input range to extend to ±5 V – 7.2 mW at 500 kSPS differential or 5 V single-ended. A simple SPI ™, with – 1.4 mW at 100 kSPS a digital supply that can operate as low as 1.65 V, allows for easy interfacing to a wide variety of digital – 0.3 mW at 20 kSPS controllers. Automatic power-down can be enabled • Wide Supply Range: when operating at slower speeds to dramatically – Analog: 2.7 V to 5.25 V reduce power consumption. – Digital: 1.65 V to AVDD Offered in a tiny 3 mm × 3 mm QFN package, the • Simple Serial Interface (SPI) ADS7945/6 are fully specified over the extended temperature range of –40°C to +125°C and are • Fully Specified from –40°C to +125°C suitable for a wide variety of data acquisition • Tiny Footprint: 3 mm × 3 mm QFN applications where high performance, low power, and small package size are key. APPLICATIONS • Optical Networking • Medical Instrumentation • Battery-Powered Equipment • Data Acquisition Systems 1 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. 2 SPI is a trademark of Motorola. 3 All other trademarks are the property of their respective owners. PRODUCTION DATA information is current as of publication date. Copyright © 2011, 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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