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AD7091RBCPZ-RL7 Datasheet(PDF) 1 Page - Analog Devices |
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AD7091RBCPZ-RL7 Datasheet(HTML) 1 Page - Analog Devices |
1 / 20 page 1 MSPS, Ultralow Power, 12-Bit ADC in 10-Lead LFCSP and MSOP Data Sheet AD7091R Rev. 0 Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibilityisassumedbyAnalogDevicesforitsuse,norforanyinfringementsofpatentsorother rightsofthirdpartiesthatmayresultfromitsuse.Specificationssubjecttochangewithoutnotice.No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners. One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781.329.4700 www.analog.com Fax: 781.461.3113 ©2012 Analog Devices, Inc. All rights reserved. FEATURES Fast throughput rate of 1 MSPS Specified for VDD of 2.7 V to 5.25 V Logic voltage VDRIVE of 1.65 V to 5.25 V INL of ±1 LSB maximum Analog input range of 0 V to VREF Ultralow power 349 µA typical at 3 V and 1 MSPS 264 nA typical at 3 V in power-down mode Internal 2.5 V reference, ±4.5 ppm/°C typical drift Wide input bandwidth Flexible power/throughput rate management High speed serial interface SPI®/QSPI™/MICROWIRE™/DSP compatible BUSY indicator Power-down mode 10-lead, 3 mm × 2 mm LFCSP and 10-lead MSOP packages Temperature range of −40°C to +125°C APPLICATIONS Battery-powered systems Handheld meters Medical instruments Mobile communications Instrumentation and control systems Data acquisition systems Optical sensors Diagnostic/monitoring functions Energy harvesting FUNCTIONAL BLOCK DIAGRAM Figure 1. Figure 2. Power vs. Throughput Rate GENERAL DESCRIPTION The AD7091R is a 12-bit successive approximation analog-to- digital converter (ADC) that offers ultralow power consumption (typically 349 µA at 3 V and 1 MSPS) while achieving fast throughput rates (1 MSPS with a 50 MHz SCLK). Operating from a single 2.7 V to 5.25 V power supply, the part contains a wide bandwidth track-and-hold amplifier that can handle input frequencies in excess of 7 MHz. The AD7091R also features an on-chip conversion clock, accurate reference, and high speed serial interface. The conversion process and data acquisition are controlled using a CONVST signal and an internal oscillator. The AD7091R has a serial interface that allows data to be read after the conversion while achieving a 1 MSPS throughput rate. The AD7091R uses advanced design and process techniques to achieve very low power dissipation at high throughput rates. An on-chip, accurate 2.5 V reference is available. PRODUCT HIGHLIGHTS 1. Lowest Power 12-Bit SAR ADC Available. 2. On-Chip, Accurate 2.5 V Reference. 3. High Throughput Rate with Ultralow Power Consumption. 4. Flexible Power/Throughput Rate Management. Average power scales with the throughput rate. Power-down mode allows the average power consumption to be reduced when the device is not performing a conversion. 5. Single Supply Operation with VDRIVE Function. The AD7091R operates from a single 2.7 V to 5.25 V supply. The VDRIVE function allows the serial interface to connect directly to 1.8 V to 3.3 V processors. 2.5V REF CONVERSION CONTROL LOGIC GND CLK OSC VIN REGCAP VDD 12-BIT SAR SERIAL INTERFACE SDO AD7091R SCLK CS VDRIVE CONVST T/H REFIN/REFOUT 0 100 200 300 400 500 600 700 800 900 1000 1100 0 200 400 600 800 1000 THROUGHPUT RATE (kSPS) VDD VDRIVE VDD = VDRIVE = 3V VDD = VDRIVE = 3V |
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