Features and Benefits
- 5 MHz to 21 MHz master clock input frequency
- Offset drift vs. temperature: ±0.25 μV/°C maximum
- 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 (16-lead SOIC_W)
- −40°C to +105°C (8-lead SOIC_IC)
- 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)
- UL recognition
The ADuM7704 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 operates from a 4.5 V to 20 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 3.3 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 ADuM7704 is available in a 16-lead, wide-body SOIC_W with an operating temperature range of −40°C to +125°C and an 8-lead, wide-body SOIC_IC 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-ADuM7704-8FMCZ is a fully featured evaluation board that allows the user to evaluate all features of the ADuM7704 isolated analog-to-digital converter (ADC). The high speed system demonstration platform (SDP) EVAL-SDP-CH1Z (SDP-H1) controller board controls the EV-ADuM7704-8FMCZ 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, low noise, low dropout (LDO) regulator (the ADP7104ARDZ-5.0).
The UG-1871 user guide explains how to use the EV-ADuM7704-8FMCZ to evaluate the ADuM7704. The ADuM7704 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 20 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 ADuM7704. 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 ADuM7704 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 (16-lead SOIC_W) and −40°C to +105°C (8-lead SOIC_IC).
For full details on the ADuM7704, see the ADuM7704 data sheet, which must be consulted in conjunction with the user guide when using the evaluation board. Full details on the SDP-H1 are available on the SDP-H1 product page.
Features & Benefits
- Fully featured evaluation board for the ADuM7704
- On-board power supplies
- Standalone capability
- SDP-H1 controller board compatible
- PC-based software for control and data analysis
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.