AD7402-8BRIZ-RL7

模数转换器 - ADC Isolated 16Bit SigmaDelta ADC Int Clock

Product Details

The AD7402 is a high performance, second-order, Σ-Δ modulator that converts an analog input signal into a high speed, single-bit data stream, with on-chip digital isolation based on Analog Devices, Inc., iCoupler® technology. The AD7402 operates from a 4.5 to 5.5 V VDD1 power supply and accepts a differential input signal of ±250 mV ±320 mV full scale. The differential input is ideally suited to shunt voltage monitoring in high voltage applications where galvanic isolation is required.

The analog input is continuously sampled by a high performance analog modulator, and converted to a ones density, digital output stream with a data rate of 10 MHz. The original information can be reconstructed with an appropriate digital filter to achieve 87 dB signal to noise ratio SNR at 39 kSPS. The serial input/output can use a 3 V to 5.5 V or a 3.3 V supply VDD2.

The serial interface is digitally isolated. High speed complementary metal oxide semiconductor CMOS technology, combined with monolithic transformer technology, means the on-chip isolation provides outstanding performance characteristics, superior to alternatives such as optocoupler devices. The AD7402 device is offered in an 8-lead wide body SOIC package and has an operating temperature range of −40°C to +105°C.

Safety and regulatory approvals

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UL recognition

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5000 V rms for 1 minute per UL 1577

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CSA Component Acceptance Notice 5A

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VDE Certificate of Conformity

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DIN V VDE V 0884-10 VDE V 0884-10:2006-12

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VIORM = 1250 VPEAK

Applications

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Shunt current monitoring

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AC motor controls

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Power and solar inverters

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Wind turbine inverters

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Data acquisition systems

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Analog-to-digital and opto-isolator replacements

### Features and Benefits

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10 MHz internal clock rate

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16 bits, no missing codes

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Signal-to-noise ratio SNR: 87 dB typical

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Effective number of bits ENOB: 13.5 bits typical

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Typical offset drift vs. temperature: 1.7 µV/°C

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On-board digital isolator

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On-board reference

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Full-scale analog input range: ±320 mV

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−40°C to +105°C operating range

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High common-mode transient immunity: >25 kV/µs

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8-lead, wide-body SOIC, with increased creepage package

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Slew rate limited output for low electromagnetic interference EMI