Features and Benefits
- 5 MHz to 21 MHz master clock input frequency
- Offset drift vs. temperature: ±0.6 μV/°C maximum
- SNR: 86 dB typical
- 16 bits, no missing codes
- Full-scale analog input voltage range: ±320 mV
- ENOB: 14 bits typical
- IDD1: 10 mA maximum
- On-board digital isolator
- Operating temperature range
- −40°C to +125°C (16-lead SOIC_W)
- −40°C to +105°C (8-lead SOIC_IC)
- 20 V operation on VDD1
- High CMTI: 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 (Pending)
- VDE Certificate of Conformity
- DIN V VDE V 0884-10: VIORM = 1270 VPEAK
- DIN V VDE V 0884-11: VIORM = 1060 VPEAK (Pending)
- UL recognition
The ADuM7703 is a high performance, second-order, Σ-Δ analog-to-digital converter (ADC) with an integrated low dropout (LDO) regulator 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 operates from a 4.5 V to 20 V power supply range (VDD1) and accepts a pseudo differential input signal of ±250 mV (±320 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 86 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 3.3 V supply (VDD2).
The serial interface is digitally isolated. High speed complementary metal-oxide semiconductor (CMOS) technology, combined with monolithic transformer technology, results in the on-chip isolation providing outstanding performance characteristics, superior to alternatives such as optocoupler devices. The ADuM7703 device is available in a 16-lead, wide-body SOIC with an operating temperature range of −40°C to +125°C and an 8-lead, wide-body SOIC with an operating temperature range of −40°C to +105°C.
- Shunt current monitoring
- AC motor controls
- Power and solar inverters
- Wind turbine inverters
- Analog-to-digital and optoisolator replacement
Product Lifecycle Recommended for New Designs
This product has been released to the market. The data sheet contains all final specifications and operating conditions. For new designs, ADI recommends utilization of these products.
Evaluation Kits (1)
The EV-ADuM7703-8FMCZ is a fully featured evaluation board that allows the user to evaluate all features of the ADuM7703, 16-bit, isolated, Σ-Δ analog-to-digital converter (ADC). The system demonstration platform high speed EVAL-SDP-CH1Z (SDP-H1) controller board controls the EV-ADuM7703-8FMCZ evaluation board via the J9 connector and through the USB port of a PC using the Analysis Control Evaluation (ACE) software. The ACE software is available for 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, low noise, low dropout (LDO) regulator (the ADP7104ARDZ-5.0).
This user guide explains how to use the EV-ADuM7703-8FMCZ to evaluate the ADuM7703. The ADuM7703 is a high performance, second-order, Σ-Δ ADC 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.
Complete specifications for the ADuM7703 are provided in the ADuM7703 data sheet and must be consulted in conjunction with this user guide when using the evaluation board. Full details on the SDP-H1 board are available on the SDP-H1 product page.
Tools & Simulations
Safety and Regulatory Compliance (1)
Product Selection Guide (1)
Solutions Bulletins & Brochures (1)
Technical Articles (2)
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal.
Sample & Buy
The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.
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