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AD7264

Analog Devices
Part Number AD7264
Manufacturer Analog Devices
Description Simultaneous Sampling SAR ADC
Published Mar 6, 2017
Detailed Description Data Sheet 1 MSPS, 14-Bit, Simultaneous Sampling SAR ADC with PGA and Four Comparators AD7264 FEATURES Dual, simultane...
Datasheet PDF File AD7264 PDF File

AD7264
AD7264

Overview
Data Sheet 1 MSPS, 14-Bit, Simultaneous Sampling SAR ADC with PGA and Four Comparators AD7264 FEATURES Dual, simultaneous sampling, 14-bit, 2-channel ADC True differential analog inputs Programmable gain stage: ×1, ×2, ×3, ×4, ×6, ×8, ×12, ×16, ×24, ×32, ×48, ×64, ×96, ×128 Throughput rate per ADC 1 MSPS for AD7264 Analog input impedance: >1 GΩ Wide input bandwidth −3 dB bandwidth: 1.
7 MHz at gain = 2 4 on-chip comparators SNR: 78 dB typical at gain = 2, 71 dB typical at gain = 32 Device offset calibration System gain calibration On-chip reference: 2.
5 V −40°C to +105°C operation High speed serial interface Compatible with SPI, QSPI™, MICROWIRE™, and DSP 48-lead LFCSP and LQFP packages GENERAL DESCRIPTION The AD7264 is a dual, 14-bit, high speed, low power, successive approximation ADC that operates from a single 5 V power supply and features throughput rates of up to 1 MSPS per on-chip ADC.
Two complete ADC functions allow simultaneous sampling and conversion of two channels.
Each ADC is preceded by a true differential analog input with a PGA.
There are 14 gain settings available: ×1, ×2, ×3, ×4, ×6, ×8, ×12, ×16, ×24, ×32, ×48, ×64, ×96, and ×128.
The AD7264 contains four comparators.
Comparator A and Comparator B are optimized for low power, whereas Comparator C and Comparator D have fast propagation delays.
The AD7264 features a calibration function to remove any device offset error and programmable gain adjust registers to allow input path (for example, sensor) offset and gain compensation.
The AD7264 has an on-chip 2.
5 V reference that can be disabled if an external reference is preferred.
The AD7264 is available in 48-lead LFCSP and LQFP packages.
The AD7264 is ideally suited for monitoring small amplitude signals from a variety of sensors.
The devices include all the functionality needed for monitoring the position feedback signals from a variety of analog encoders used in motor control systems.
FUNCTIONAL BLOCK DIAGRAM AVCC VREFA REF BUF AD7264 14-...


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