ADuM7703
RECOMMENDED FOR NEW DESIGNS16-Bit, Isolated, Sigma-Delta ADC
- Part Models
- 6
- 1ku List Price
- Starting From $5.05
Part Details
- 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
- ADuM7703 wide-body, 16-lead SOIC_W, and ADuM7703 wide-body with increased creepage, 8-lead SOIC_IC
- UL 1577
- VISO = 5700 V rms for 1 minute
- IEC/EN/CSA 62368-1
- IEC/CSA 60601-1
- IEC/CSA 61010-1
- DIN EN IEC 60747-17 (VDE 0884-17)
- VIORM = 1401 VPEAK
- UL 1577
- ADuM7703 wide-body, 16-lead SOIC_W, and ADuM7703 wide-body with increased creepage, 8-lead SOIC_IC
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.
Applications
- Shunt current monitoring
- AC motor controls
- Power and solar inverters
- Wind turbine inverters
- Analog-to-digital and optoisolator replacement
Documentation
Data Sheet 1
User Guide 1
Technical Articles 1
Safety and Regulatory Compliance 1
Video 1
Solutions Bulletin & Brochure 2
Safety and Regulatory Compliance 1
Thought Leadership Page 1
Webcast 3
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. View our quality and reliability program and certifications for more information.
| Part Model | Pin/Package Drawing | Documentation | CAD Symbols, Footprints, and 3D Models |
|---|---|---|---|
| ADUM7703-8BRIZ | 8-Lead SOIC (Increased Creepage) | ||
| ADUM7703-8BRIZ-RL | 8-Lead SOIC (Increased Creepage) | ||
| ADUM7703-8BRIZ-RL7 | 8-Lead SOIC (Increased Creepage) | ||
| ADUM7703BRWZ | 16-Lead SOIC Wide | ||
| ADUM7703BRWZ-RL | 16-Lead SOIC Wide | ||
| ADUM7703BRWZ-RL7 | 16-Lead SOIC Wide |
| Part Models | Product Lifecycle | PCN |
|---|---|---|
|
Sep 27, 2021 - 20_0135 ADuM7701 and ADuM7703 metal edit |
||
| ADUM7703-8BRIZ | PRODUCTION | |
| ADUM7703-8BRIZ-RL | PRODUCTION | |
| ADUM7703-8BRIZ-RL7 | PRODUCTION | |
| ADUM7703BRWZ | PRODUCTION | |
| ADUM7703BRWZ-RL | PRODUCTION | |
| ADUM7703BRWZ-RL7 | PRODUCTION | |
|
Jun 26, 2025 - 25_0064 Update Data Sheet Regulatory Information for Select Isolated ADC Products |
||
| ADUM7703BRWZ | PRODUCTION | |
| ADUM7703BRWZ-RL | PRODUCTION | |
| ADUM7703BRWZ-RL7 | PRODUCTION | |
This is the most up-to-date revision of the Data Sheet.
Software Resources
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Request a Driver/SoftwareTools & Simulations
IBIS Model 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.
Evaluation Kits
ADuM7703 Evaluation Board