AD7656A-1BSTZ-RL

IC ADC 16Bit 6CH 250KSPS 64LQFP

Product Details

The AD7656A-1 is a reduced decoupling pin- and software-compatible version of AD7656A. The AD7656A-1 contains six 16-bit, fast, low power successive approximation ADCs in a package 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-1 features throughput rates of to 250 kSPS. It contains wide bandwidth 4.5 MHz, track-and-hold amplifiers that can handle input frequencies up to 4.5 MHz.

The conversion process and data acquisition are controlled using the 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-1 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-1 has a daisy-chain feature that allows multiple ADCs to connect to a single serial interface. The AD7656A-1 can accommodate true bipolar input signals in the ±4 × VREF range and the ±2 × VREF range. The AD7656A-1 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.

**PRODUCT HIGHLIGHTS**

1. Six 16-bit, 250 kSPS ADCs on board.

2. Six true bipolar, high impedance analog inputs.

3. High speed parallel and serial interfaces.

4. Reduced decoupling requirements and reduced bill of

materials cost compared with the AD7656A.

**APPLICATIONS**

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Power line monitoring and measuring systems

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Instrumentation and control systems

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Multiaxis positioning systems

### Features and Benefits

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Pin and software compatible with the AD7656A featuring reduced decoupling requirements

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6 independent analog-to-digital converters ADCs

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True bipolar analog inputs

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Pin-/software-selectable ranges: ±10 V or ±5 V

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Fast throughput rate: 250 kSPS

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iCMOS process technology

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Low power: 140 mW at

250 kSPS with 5 V supplies

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High noise performance with wide bandwidth

88 dB SNR at 10 kHz input frequency

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On-chip reference and reference buffers

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See data sheet for additional features