Overview
The ADuM7701BRWZ-RL7, produced by Analog Devices Inc., is a high-performance, 16-bit, isolated Sigma-Delta modulator. This device is designed to convert an analog input signal into a high-speed, single-bit data stream, utilizing Analog Devices' iCoupler® technology for on-chip digital isolation. It is particularly suited for applications requiring galvanic isolation, such as shunt voltage monitoring in high-voltage systems. The ADuM7701 operates from a 4.5 V to 5.5 V power supply range and accepts a pseudo-differential input signal of ±250 mV (±320 mV full-scale).
Key Specifications
| Parameter | Value |
|---|---|
| Main Clock Input Frequency | 5 MHz to 21 MHz |
| Offset Drift vs. Temperature | ±0.6 µV/°C maximum |
| Signal-to-Noise Ratio (SNR) | 86 dB typical |
| Resolution | 16 bits, no missing codes |
| Full-Scale Analog Input Voltage Range | ±320 mV |
| Effective Number of Bits (ENOB) | 14 bits typical |
| Supply Voltage (VDD1) | 4.5 V to 5.5 V |
| Supply Voltage (VDD2) | 3 V to 5.5 V |
| Operating Temperature Range | −40°C to +125°C |
| Package Type | 16-Lead SOIC Wide |
| Power Dissipation (VDD2 = 4.5 V to 5.5 V) | 51 mW to 71.5 mW |
| Power Dissipation (VDD2 = 3 V to 3.6 V) | 47.6 mW to 66 mW |
Key Features
- High-performance, second-order Sigma-Delta modulator
- On-chip digital isolation using iCoupler® technology
- Pseudo-differential analog input suitable for shunt voltage monitoring
- High common-mode transient immunity
- CMOS logic inputs with Schmitt trigger
- Operating from a single 4.5 V to 5.5 V power supply (VDD1) and a separate 3 V to 5.5 V power supply (VDD2) for the digital side
- Low power consumption with typical IDD1 of 8.2 mA and IDD2 of 2 mA
Applications
- Shunt voltage monitoring in high-voltage applications
- Industrial control systems requiring galvanic isolation
- Energy metering and power quality monitoring
- Automotive systems needing isolated data acquisition
- Medical devices requiring high isolation and precision
Q & A
- What is the primary function of the ADuM7701?
The ADuM7701 is a 16-bit, isolated Sigma-Delta modulator that converts an analog input signal into a high-speed, single-bit data stream. - What is the operating temperature range of the ADuM7701?
The operating temperature range is −40°C to +125°C. - What is the full-scale analog input voltage range of the ADuM7701?
The full-scale analog input voltage range is ±320 mV. - What is the signal-to-noise ratio (SNR) of the ADuM7701?
The SNR is 86 dB typical. - What type of isolation technology does the ADuM7701 use?
The ADuM7701 uses Analog Devices' iCoupler® technology for on-chip digital isolation. - What are the power supply voltage ranges for VDD1 and VDD2?
VDD1 ranges from 4.5 V to 5.5 V, and VDD2 ranges from 3 V to 5.5 V. - What is the typical power dissipation of the ADuM7701?
The typical power dissipation is 51 mW to 71.5 mW for VDD2 = 4.5 V to 5.5 V and 47.6 mW to 66 mW for VDD2 = 3 V to 3.6 V. - What is the resolution of the ADuM7701?
The resolution is 16 bits with no missing codes. - What are some common applications of the ADuM7701?
Common applications include shunt voltage monitoring, industrial control systems, energy metering, automotive systems, and medical devices. - What type of package does the ADuM7701 come in?
The ADuM7701 comes in a 16-Lead SOIC Wide package.
