Product Details
●The AD7656A contains six 16-bit, fast, low power, successive approximation analog-to-digital converters (ADCs) all in the one package that is designed on the _i_CMOS® process (industrial CMOS). _i_CMOS is a process combining high voltage silicon with submicron CMOS and complementary bipolar technologies. It enables the development of a wide range of high performance analog ICs, capable of 33 V operation in a footprint that no previous generation of high voltage devices could achieve. Unlike analog ICs using conventional CMOS processes, _i_CMOS components can accept bipolar input signals while providing increased performance, which dramatically reduces power consumption and package size.
●The AD7656A features throughput rates of up to 250 kSPS. It contains wide bandwidth (12 MHz), track-and-hold amplifiers that can handle input frequencies up to 12 MHz.
●The conversion process and data acquisition are controlled using CONVST x signals and an internal oscillator. Three CONVST x pins (CONVST A, CONVST B, and CONVST C) allow independent, simultaneous sampling of the three ADC pairs. The AD7656A has a high speed parallel and serial interface, allowing the device to interface with microprocessors or digital signal processors (DSPs). In serial interface mode, the AD7656A has a daisy-chain feature that allows multiple ADCs to connect to a single serial interface. The AD7656A can accommodate true bipolar input signals in the ±4 × VREF range and ±2 × VREF range. The AD7656A also contains an on-chip 2.5 V reference.
●Multifunction pin names may be referenced by their relevant function only.
●Please visit next generation product AD7606. For reduced decoupling requirements visit the AD7656A-1 product page.
●PRODUCT HIGHLIGHTS
● 1. Six 16-bit, 250 kSPS ADCs on board.
● 2. Six true bipolar, high impedance analog inputs.
● 3. Parallel and high speed serial interfaces.
●APPLICATIONS
● Power line monitoring systems
● Instrumentation and control systems
● Multi-axis positioning systems
●### Features and Benefits
● 6 independent analog-to-digital converters (ADCs)
● True bipolar analog inputs
● Pin-/software-selectable ranges: ±10 V or ±5 V
● Fast throughput rate: 250 kSPS
● iCMOS® process technology
● Low power: 140 mW at 250 kSPS with 5 V supplies
● Wide input bandwidth
●86.5 dB SNR at 50 kHz input frequency
● On-chip reference and reference buffers
● On-chip reference and reference buffers
● Parallel, serial, and daisy-chain interface modes
● High speed serial interface
●Serial peripheral interface (SPI)/QSPI™/MICROWIRE®/DSP compatible
● Power-down mode:
●100 mW maximum
● 64-lead LQFP
● Improved power supply sequencing (PSS) robustness
