Overview
The ADuM7703-8BRIZ, produced by Analog Devices Inc., is a high-performance, second-order, Σ-Δ (Sigma-Delta) analog-to-digital converter (ADC) with integrated low dropout (LDO) regulator. This device is designed to convert an analog input signal into a high-speed, single-bit data stream, utilizing on-chip digital isolation based on Analog Devices' iCoupler® technology. It is particularly suited for applications requiring galvanic isolation, such as shunt voltage monitoring in high-voltage systems.
Key Specifications
| Parameter | Min | Typ | Max | Unit | Test Conditions/Comments |
|---|---|---|---|---|---|
| VDD1 (Power Supply) | 4.5 | 15 | 20 | V | |
| VDD2 (Power Supply) | 3 | 5.5 | V | ||
| IDD1 (Current) | 8.2 | 10 | mA | ||
| IDD2 (Current) | 2 | 3 | mA | ||
| Analog Input Range | ±250 mV | ±320 mV (full-scale) | mV | Pseudo differential input | |
| SNR (Signal-to-Noise Ratio) | 86 dB | dB | At 78.1 kSPS with 20 MHz master clock | ||
| ENOB (Effective Number of Bits) | 14 bits | bits | Typical | ||
| Isolation Voltage | 780 V rms (1102 VPEAK) for 16-lead SOIC_W | V | Reinforced insulation per CSA 60950-1-07 and IEC 60950-1 | ||
| Operating Temperature | −40°C | +125°C for 16-lead SOIC_W, +105°C for 8-lead SOIC_IC | °C |
Key Features
- High-performance, second-order, Σ-Δ analog-to-digital converter (ADC) with integrated LDO regulator.
- On-chip digital isolation using iCoupler® technology.
- Pseudo differential analog input range of ±250 mV (±320 mV full-scale), suitable for shunt voltage monitoring in high-voltage applications.
- High-speed single-bit data stream output with up to 21 MHz data rate.
- SNR of 86 dB typical at 78.1 kSPS with a 20 MHz master clock.
- ENOB of 14 bits typical.
- Operating power supply range of 4.5 V to 20 V (VDD1) and 3 V to 5.5 V (VDD2).
- Digital interface operates from 3 V or 5 V supply.
- Available in 16-lead and 8-lead wide-body SOIC packages.
- Reinforced insulation with high isolation voltage ratings.
Applications
- Industrial automation.
- Programmable logic controllers (PLCs).
- High-voltage monitoring and control systems.
- Power supply monitoring and control.
- Medical devices requiring high isolation and precision.
- Energy metering and monitoring systems.
Q & A
- What is the ADuM7703-8BRIZ used for?
The ADuM7703-8BRIZ is a high-performance, second-order, Σ-Δ analog-to-digital converter (ADC) with integrated LDO regulator, used for converting analog input signals into high-speed digital data streams, especially in applications requiring galvanic isolation.
- What is the analog input range of the ADuM7703-8BRIZ?
The analog input range is ±250 mV (±320 mV full-scale) pseudo differential input.
- What is the signal-to-noise ratio (SNR) of the ADuM7703-8BRIZ?
The SNR is typically 86 dB at 78.1 kSPS with a 20 MHz master clock.
- What are the power supply requirements for the ADuM7703-8BRIZ?
The device operates from a 4.5 V to 20 V power supply range (VDD1) and a 3 V to 5.5 V power supply range (VDD2).
- What is the isolation voltage rating of the ADuM7703-8BRIZ?
The isolation voltage rating is up to 780 V rms (1102 VPEAK) for the 16-lead SOIC_W package and up to 810 V rms (1145 VPEAK) for the 8-lead SOIC_IC package.
- What are the typical applications of the ADuM7703-8BRIZ?
Typical applications include industrial automation, programmable logic controllers, high-voltage monitoring and control systems, power supply monitoring, and medical devices requiring high isolation and precision.
- What is the operating temperature range of the ADuM7703-8BRIZ?
The operating temperature range is −40°C to +125°C for the 16-lead SOIC_W package and −40°C to +105°C for the 8-lead SOIC_IC package.
- What is the data rate of the ADuM7703-8BRIZ?
The data rate can be up to 21 MHz.
- What is the effective number of bits (ENOB) of the ADuM7703-8BRIZ?
The ENOB is typically 14 bits.
- What package options are available for the ADuM7703-8BRIZ?
The device is available in 16-lead and 8-lead wide-body SOIC packages.
- What technology is used for digital isolation in the ADuM7703-8BRIZ?
The device uses Analog Devices' iCoupler® technology for digital isolation.
