Overview
The ADUM7702-8BRIZ-RL, produced by Analog Devices Inc., is a high-performance, second-order, Σ-Δ (Sigma-Delta) modulator. This device is designed to convert an analog input signal into a high-speed, single-bit data stream. It features on-chip digital isolation based on Analog Devices' iCoupler® technology, making it ideal for applications requiring galvanic isolation.
The ADUM7702 operates from a 4.5 V to 5.5 V power supply range and accepts a pseudo-differential input signal of ±50 mV (±64 mV full-scale). The device is particularly suited for high-voltage applications such as shunt voltage monitoring.
Key Specifications
| Parameter | Min | Typ | Max | Unit | Test Conditions/Comments |
|---|---|---|---|---|---|
| Power Supply Range (VDD1) | 4.5 | 5.5 | V | ||
| Analog Input Range | ±50 mV | ±64 mV (full-scale) | mV | Pseudo-differential input | |
| Sampling Rate | 78.1 kSPS | SPS | With a 256 decimation rate and 20 MHz master clock | ||
| Data Rate | Up to 21 MHz | MHz | |||
| Signal-to-Noise Ratio (SNR) | 82 dB | dB | Using a sinc3 digital filter with a 256 oversampling ratio | ||
| Effective Number of Bits (ENOB) | 12.5 | Bits | |||
| Common-Mode Transient Immunity (CMTI) | 75 | 150 | kV/μs | VDD2 = 5.5 V or 3.3 V | |
| Logic Input High Voltage (VIH) | 0.7 × VDD2 | V | |||
| Logic Input Low Voltage (VIL) | 0.3 × VDD2 | V | |||
| Operating Temperature Range | -40 | 125 | °C | ||
| Package Type | SOIC-8 |
Key Features
- High-Performance Σ-Δ Modulator: Converts analog input signals to high-speed, single-bit data streams.
- On-Chip Digital Isolation: Utilizes iCoupler® technology for galvanic isolation, suitable for high-voltage applications.
- Pseudo-Differential Input: Accepts input signals of ±50 mV (±64 mV full-scale), ideal for shunt voltage monitoring.
- High Sampling Rate: Up to 78.1 kSPS with a 256 decimation rate and 20 MHz master clock.
- High SNR: Achieves an 82 dB signal-to-noise ratio using a sinc3 digital filter.
- Wide Operating Temperature Range: From -40°C to 125°C.
- Compact Packaging: Available in SOIC-8 package with surface mount installation type.
- Compliant with RoHS Standards: Lead-free and compliant with RoHS standards.
Applications
- Wireless Communication: Used in base stations and communication infrastructure for signal processing, modulation, and demodulation.
- Professional Audio Equipment: Utilized in mixers, amplifiers, audio interfaces, and digital signal processors for high-quality audio signal conversion.
- Power Management: Power converters and inverters for precise control and monitoring of electrical signals.
- Renewable Energy Systems: Solar inverters, wind turbine controllers, and energy storage systems for signal processing and control.
- Robotics Control: Applied in robotics for precise control of servo motors and other actuators.
Q & A
- What is the primary function of the ADUM7702-8BRIZ-RL?
The primary function is to convert an analog input signal to a high-speed, single-bit data stream using a second-order Σ-Δ modulator.
- What is the power supply range for the ADUM7702?
The power supply range is from 4.5 V to 5.5 V.
- What type of input signal does the ADUM7702 accept?
The ADUM7702 accepts a pseudo-differential input signal of ±50 mV (±64 mV full-scale).
- What is the maximum data rate of the ADUM7702?
The maximum data rate is up to 21 MHz.
- What is the signal-to-noise ratio (SNR) achieved by the ADUM7702?
The SNR is 82 dB using a sinc3 digital filter with a 256 oversampling ratio.
- What is the common-mode transient immunity (CMTI) of the ADUM7702?
The CMTI is 75 to 150 kV/μs depending on the VDD2 voltage.
- What is the operating temperature range of the ADUM7702?
The operating temperature range is from -40°C to 125°C.
- What type of packaging does the ADUM7702-8BRIZ-RL come in?
The device comes in an SOIC-8 package with surface mount installation type.
- Is the ADUM7702 compliant with RoHS standards?
Yes, the ADUM7702 is lead-free and compliant with RoHS standards.
- What are some common applications of the ADUM7702?
Common applications include wireless communication, professional audio equipment, power management, renewable energy systems, and robotics control.
