AD7091R

Data Sheet 1 MSPS, Ultralow Power, 12-Bit ADC in 10-Lead LFCSP and MSOP AD7091R 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 GENERAL DESCRIPTION The AD7091R is a 12-bit successive approximation analog-todigital 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. Th...