ADI AD7264BCPZ

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.

• 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: >7 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