Overview
The AD7403BRIZ, 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, making it suitable for applications requiring high isolation and precision.
The AD7403BRIZ operates over a wide temperature range of −40°C to +125°C, with the AD7403-8 variant operating up to +105°C. It is packaged in a 16-lead, wide-body SOIC package, which enhances creepage distance and provides high common-mode transient immunity.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Operating Temperature | −40°C | +125°C (AD7403), +105°C (AD7403-8) | °C | |
| Input Voltage Range | V | |||
| VDD1 | 4.5 | 5.5 | V | |
| VDD2 | 3 | 5.5 | V | |
| IDD1 (VDD1 = 5.5V) | 30 | 33.5 | mA | |
| IDD2 (VDD2 = 5.5V) | 13 | 16 | mA | |
| Power Dissipation (VDD1 = VDD2 = 5.5V) | 237 | 272 | mW | |
| Master Clock Input Frequency | 5 | 20 | MHz | |
| Data Access Time after MCLKIN Rising Edge | 40 | 45 | ns | |
| Effective Number of Bits (ENOB) | 13.1 | 14.2 | Bits | |
| Isolation Transient Immunity | 25 | 30 | kV/µs |
Key Features
- High-performance, second-order Σ-Δ modulator converting analog input signals into high-speed, single-bit data streams.
- On-chip digital isolation for enhanced safety and reliability.
- Wide operating temperature range: −40°C to +125°C (AD7403) and −40°C to +105°C (AD7403-8).
- High common-mode transient immunity: >25 kV/µs.
- Slew rate limited output for low EMI.
- Safety and regulatory approvals including UL recognition, CSA certification, and VDE Certificate of Conformity.
- 16-bit resolution with an effective number of bits (ENOB) of 13.1 to 14.2 bits.
- CMOS logic inputs with Schmitt trigger and low input current.
Applications
- Shunt current monitoring.
- AC motor controls.
- Power and solar inverters.
- Wind turbine inverters.
- Data acquisition systems.
- Analog-to-digital and optoisolator replacements.
Q & A
- What is the AD7403BRIZ?
The AD7403BRIZ is a high-performance, second-order Σ-Δ modulator produced by Analog Devices Inc., designed to convert analog input signals into high-speed, single-bit data streams with on-chip digital isolation.
- What is the operating temperature range of the AD7403BRIZ?
The AD7403 operates from −40°C to +125°C, while the AD7403-8 operates from −40°C to +105°C.
- What is the resolution of the AD7403BRIZ?
The AD7403BRIZ has a 16-bit resolution with an effective number of bits (ENOB) ranging from 13.1 to 14.2 bits.
- What are the key safety features of the AD7403BRIZ?
The device has high common-mode transient immunity, slew rate limited output for low EMI, and various safety and regulatory approvals including UL recognition, CSA certification, and VDE Certificate of Conformity.
- What are some common applications of the AD7403BRIZ?
Common applications include shunt current monitoring, AC motor controls, power and solar inverters, wind turbine inverters, data acquisition systems, and analog-to-digital and optoisolator replacements.
- What is the package type of the AD7403BRIZ?
The AD7403BRIZ is packaged in a 16-lead, wide-body SOIC package.
- What is the master clock input frequency range of the AD7403BRIZ?
The master clock input frequency range is from 5 MHz to 20 MHz.
- What is the power dissipation of the AD7403BRIZ?
The power dissipation is typically between 237 mW and 272 mW when VDD1 and VDD2 are both 5.5V.
- Does the AD7403BRIZ have any specific regulatory approvals?
Yes, it has UL recognition, CSA certification per IEC 62368-1 and IEC 60601-1, and VDE Certificate of Conformity.
- How does the AD7403BRIZ handle EMI?
The device features a slew rate limited output to minimize EMI.
