Overview
The AD7402-8BRIZ-RL is a high-performance, 16-bit isolated Sigma-Delta modulator produced by Analog Devices Inc. This device is designed to convert an analog input signal into a high-speed, single-bit data stream, featuring on-chip digital isolation based on Analog Devices' iCoupler technology. The AD7402 operates from a 4.5 V to 5.5 V power supply and accepts a differential input signal of ±250 mV (±320 mV full scale). It is packaged in an 8-lead, wide-body SOIC with increased creepage, ensuring high reliability and safety standards.
Key Specifications
| Parameter | Value | Unit | Comments |
|---|---|---|---|
| Resolution | 16 bits | - | No missing codes |
| Number of Channels | 1 Channel | - | - |
| Interface Type | Serial | - | - |
| Sampling Rate | 39 kS/s | - | - |
| Input Type | Differential | - | ±250 mV (±320 mV full scale) |
| Architecture | Sigma-Delta | - | Second-order modulator |
| Analog Supply Voltage | 4.5 V to 5.5 V | V | - |
| Digital Supply Voltage | 3 V to 5.5 V | V | - |
| Minimum Operating Temperature | -40°C | °C | - |
| Maximum Operating Temperature | +105°C | °C | - |
| Power Dissipation | 209 mW | mW | - |
| Package Type | 8-Lead SOIC (Increased Creepage) | - | - |
| Insulation Voltage | 5000 V rms for 1 minute | V | UL 1577 compliant |
Key Features
- 16-bit resolution with no missing codes
- High-speed internal clock rate of up to 10 MHz
- Signal-to-noise ratio (SNR): 87 dB typical
- Effective number of bits (ENOB): 13.5 bits typical
- On-board digital isolator using iCoupler technology
- On-board reference
- Full-scale analog input range: ±320 mV
- High common-mode transient immunity: >25 kV/µs
- Slew rate limited output for low electromagnetic interference (EMI)
- Safety and regulatory approvals: UL recognition, CSA certification, VDE certificate of conformity
Applications
- Shunt current monitoring
- AC motor controls
- Power and solar inverters
- Wind turbine inverters
- Data acquisition systems
- Analog-to-digital and opto-isolator replacements
Q & A
- Q: What is the AD7402-8BRIZ-RL and its primary function?
A: The AD7402-8BRIZ-RL is a 16-bit isolated Sigma-Delta modulator that converts an analog input signal into a high-speed, single-bit data stream, featuring on-chip digital isolation.
- Q: What is the operating voltage range for the AD7402-8BRIZ-RL?
A: The device operates from a 4.5 V to 5.5 V power supply for the analog side and 3 V to 5.5 V for the digital side.
- Q: What are the key safety and regulatory approvals for the AD7402-8BRIZ-RL?
A: The device has UL recognition, CSA certification, and VDE certificate of conformity, and it meets standards such as UL 1577, IEC 62368-1, and IEC 60601-1.
- Q: What is the typical signal-to-noise ratio (SNR) of the AD7402-8BRIZ-RL?
A: The typical signal-to-noise ratio (SNR) is 87 dB.
- Q: What is the effective number of bits (ENOB) for the AD7402-8BRIZ-RL?
A: The effective number of bits (ENOB) is typically 13.5 bits.
- Q: What is the maximum operating temperature for the AD7402-8BRIZ-RL?
A: The maximum operating temperature is +105°C.
- Q: What is the insulation voltage rating for the AD7402-8BRIZ-RL?
A: The device has an insulation voltage rating of 5000 V rms for 1 minute, compliant with UL 1577.
- Q: What are some common applications for the AD7402-8BRIZ-RL?
A: Common applications include shunt current monitoring, AC motor controls, power and solar inverters, wind turbine inverters, and data acquisition systems.
- Q: How does the AD7402-8BRIZ-RL ensure low electromagnetic interference (EMI)?
A: The device features a slew rate limited output to minimize electromagnetic interference (EMI).
- Q: What kind of package does the AD7402-8BRIZ-RL come in?
A: The device is packaged in an 8-lead, wide-body SOIC with increased creepage.
