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MAX11253 Datasheet(PDF) 1 Page - Maxim Integrated Products |
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MAX11253 Datasheet(HTML) 1 Page - Maxim Integrated Products |
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1 / 51 page  General Description The MAX11253 is a 6-channel, 16-bit delta-sigma ADC that achieves exceptional performance while consuming very low power. Sample rates up to 64ksps allow preci- sion DC measurements. The MAX11253 communicates via a SPI serial interface and is available in a small (5mm x 5mm) TQFN package. The MAX11253 offers a 6.2nV/√Hz noise programmable gain amplifier (PGA) with gain settings from 1x to 128x. The integrated PGA provides isolation of the signal inputs from the switched capacitor sampling network. The PGA also enables the MAX11253 to interface directly with high-impedance sources without compromising available dynamic range. The MAX11253 operates from a single 2.7V to 3.6V analog supply, or split ±1.8V analog supplies, allowing the analog input to be sampled below ground. The digital supply range is 1.7V to 2.0V or 2.0V to 3.6V, allowing communication with 1.8V, 2.5V, 3V, or 3.3V logic. Applications ● Analog I/O for Programmable Logic Controllers ● Weigh Scales ● Pressure Sensors ● Battery-Powered Instrumentation Benefits and Features ● High Resolution for Industrial Applications that Require a Wide Dynamic Range • 98dB SNR at 1000sps ● Longer Battery Life for Portable Applications • 2.2mA Operating Mode Current • 1μA Sleep Current ● Single or Split Analog Supplies Provide Input Voltage Range Flexibility • 2.7V to 3.6V (Single Supply) or ±1.8V (Split Supply) ● Enables System Integration • Low Noise, 6.2nV/√Hz PGA with Gains of 1, 2, 4, 8, 16, 32, 64, 128 • 6-Channel, Fully Differential Input ● Enables On-Demand Device and System Gain and Offset Calibration • User-Programmable Offset and Gain Registers ● Robust Performance in a Small Package • -40°C to +125°C Operating Temperature Range • TQFN Package, 5mm x 5mm 19-7650; Rev 0; 6/15 Ordering Information appears at end of data sheet. MAX11253 µC REF 1nF C0G AIN5P AIN5N GPO0 1nF C0G GPO1 AIN0N AIN0P 10nF REFN REFP 1µF AVDD 2.7V TO 3.6V 2.0V TO 3.6V GPOGND CAPP CAPN 1nF C0G CAPREG 220nF 0603 X7R DGND AVSS RDYB DOUT DIN SCLK DVDD CSB 1µF RESISTIVE BRIDGE MEASUREMENT CIRCUIT, SPI CONFIGURATION RSTB MAX11253 16-Bit, 6-Channel, 64ksps, 6.2nV/√Hz PGA, Delta-Sigma ADC with SPI Interface Typical Application Circuit EVALUATION KIT AVAILABLE |
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