ADUM7702
Info : RECOMMENDED FOR NEW DESIGNS
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ADUM7702

16-Bit, Isolated, Sigma-Delta Modulator

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Info : RECOMMENDED FOR NEW DESIGNS tooltip
Info : RECOMMENDED FOR NEW DESIGNS tooltip
Part Details
Part Models 6
1ku List Price Starting From $4.83
Features
  • 5 MHz to 21 MHz master clock input frequency
  • Offset drift vs. temperature: ±0.25 μV/°C
  • SNR: 82 dB typical
  • 16 bits, no missing codes
  • Full-scale analog input voltage range: ±64 mV
  • ENOB: 13 bits typical
  • IDD1: 10 mA maximum
  • On-board digital isolator
  • Operating temperature range: −40°C to +125°C
  • High isolation common-mode transient immunity: 150 kV/μs minimum, VDD2 = 3.3 V
  • Wide-body SOICs
    • 16-lead SOIC_W
    • 8-lead SOIC_IC with increased creepage
  • Safety and regulatory approvals
    • UL recognition
      • 5700 V rms for 1 minute per UL 1577
  • CSA Component Acceptance Notice 5A
  • VDE Certificate of Conformity
    • DIN V VDE V 0884-10: VIORM = 1270 VPEAK
    • DIN V VDE V 0884-11: VIORM = 1060 VPEAK (pending)
Additional Details
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The ADuM7702 is a high performance, second-order, Σ-Δ modulator that converts an analog input signal to a high speed, single-bit data stream, with on-chip digital isolation based on Analog Devices, Inc., iCoupler® technology. The device operates from a 4.5 V to 5.5 V power supply range (VDD1) and accepts a pseudo differential input signal of ±50 mV (±64 mV full-scale). The pseudo 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 up to 21 MHz. The original information can be reconstructed with an appropriate sinc3 digital filter to achieve an 82 dB signal-to-noise ratio (SNR) at 78.1 kSPS with a 256 decimation rate and a 20 MHz master clock. The serial input and output operates from a 5 V or a 3 V supply (VDD2).

The serial interface is digitally isolated. High speed complementary metal-oxide semiconductor (CMOS) technology, combined with monolithic transformer technology, results in on-chip isolation providing outstanding performance characteristics, superior to alternatives such as optocoupler devices. The ADuM7702 is available in both a 16-lead SOIC_W and an 8-lead SOIC_IC and has an operating temperature range of −40°C to +125°C.

Applications

  • Shunt current monitoring
  • AC motor controls
  • Power and solar inverters
  • Wind turbine inverters
  • Analog-to-digital and optoisolator replacement
Part Models 6
1ku List Price Starting From $4.83

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Documentation

Documentation

Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
ADUM7702-8BRIZ
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ADUM7702-8BRIZ-RL
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ADUM7702-8BRIZ-RL7
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ADUM7702BRWZ
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ADUM7702BRWZ-RL
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ADUM7702BRWZ-RL7
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Software & Part Ecosystem

Software & Part Ecosystem

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Evaluation Kit

Evaluation Kits 1

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EVAL-ADuM7702

ADuM7702 Evaluation Board

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EVAL-ADuM7702

ADuM7702 Evaluation Board

ADuM7702 Evaluation Board

Features and Benefits

  • Fully featured evaluation board for the ADuM7702
  • On-board power supplies
  • Standalone capability
  • SDP-H1 controller board compatible
  • PC-based software for control and data analysis

Product Detail

The EV-ADuM7702-8FMCZ is a fully featured evaluation board that allows the user to evaluate all features of the ADuM7702 isolated analog-to-digital converter (ADC). The EVAL-SDP-CH1Z (SDP-H1) high speed system demonstration platform (SDP) controller board controls the EV-ADuM7702-8FMCZ via the J9 connector and through the USB port of a PC using the analysis, control, evaluation (ACE) software. The ACE software is available to download on the ACE software page.

On-board components include an isolated, 5 kV, isoPower® dc-to-dc converter (the ADuM6000), a 50 mA, 60 V, high efficiency buck regulator (the ADP2360ACPZ-5.0), and a 5 V, lownoise, low dropout (LDO) regulator (the ADP7104ARDZ-5.0).

The ADuM7702 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 device is powered by a 4.5 V to 5.5 V power supply (VDD1) and accepts a pseudo differential input signal of up to ±50 mV (±64 mV at full scale). The pseudo differential input shunts voltage monitoring in high voltage applications where galvanic isolation is required.

The analog input is continuously sampled by a high performance analog modulator and converts to a ones density digital output stream with a data rate of up to 21 MHz. The original information can be reconstructed with the appropriate digital filter to achieve an 82 dB signal-to-noise ratio (SNR) at 78.1 kSPS with a 20 MHz MCLKIN frequency (fMCLKIN) for the ADuM7702. The serial input and output is powered by a supply of either 5 V or 3.3 V (VDD2).

The serial interface is digitally isolated. The on-chip isolation provides performance characteristics superior to alternatives, such as optocoupler devices, due to high speed CMOS technology combined with monolithic transformer technology. The ADuM7702 comes in both 16-lead and 8-lead, wide-body SOIC packages, and the device has an operating temperature range of −40°C to +125°C.

For full details on the ADuM7702, see the ADuM7702 data sheet, which must be consulted in conjunction with this user guide when using the evaluation board. Full details on the SDP-H1 are available on the SDP-H1 product page.

Tools & Simulations

Tools & Simulations 1

LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.

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