Overview
The AD7400YRWZ-REEL, produced by Analog Devices Inc., is a second-order, sigma-delta (Σ-Δ) modulator designed to convert an analog input signal into a high-speed, 1-bit data stream. This device incorporates on-chip digital isolation using Analog Devices' iCoupler® technology, ensuring robust and reliable operation in various applications. The AD7400 operates from a 5 V power supply and accepts a differential input signal of ±200 mV (±320 mV full scale), continuously sampling the analog input without the need for external sample-and-hold circuitry. The output data stream has a typical data rate of 10 MHz, and the original information can be reconstructed using an appropriate digital filter.
Key Specifications
| Parameter | Characteristic | Unit |
|---|---|---|
| Clock Rate | 10 MHz | - |
| Modulator Order | Second-order | - |
| Resolution | 16 bits (no missing codes) | - |
| Integral Nonlinearity (INL) | ±2 LSB typical at 16 bits | - |
| Offset Drift vs. Temperature | 3.5 µV/°C | - |
| Power Supply | 5 V (VDD1), 3 V or 5 V (VDD2) | V |
| Maximum Power Consumption | 18 mA at 5.25 V | mA |
| Operating Temperature Range | −40°C to +105°C | °C |
| Package Type | 16-lead SOIC | - |
| Isolation Voltage | 5000 V rms for 1 minute | V rms |
Key Features
- On-chip digital isolation using iCoupler® technology
- On-board reference and digital isolator
- Low power operation: 18 mA maximum at 5.25 V
- Wide operating temperature range: −40°C to +105°C
- High accuracy: ±2 LSB INL typical at 16 bits, ±0.5 mV offset error
- Low offset drift: 3.5 µV/°C
- Safety and regulatory approvals: UL 1577, IEC / CSA 62368-1, IEC / CSA 61010-1, DIN EN IEC 60747-17 (VDE 0884-17)
Applications
- AC motor controls
- Data acquisition systems
- A/D + opto-isolator replacements
Q & A
- What is the primary function of the AD7400YRWZ-REEL?
The AD7400YRWZ-REEL is a second-order, sigma-delta modulator that converts an analog input signal to a high-speed, 1-bit data stream with on-chip digital isolation.
- What is the typical clock rate of the AD7400YRWZ-REEL?
The typical clock rate is 10 MHz.
- What is the resolution of the AD7400YRWZ-REEL?
The resolution is 16 bits with no missing codes.
- What is the operating temperature range of the AD7400YRWZ-REEL?
The operating temperature range is −40°C to +105°C.
- What type of power supply does the AD7400YRWZ-REEL use?
The device operates from a 5 V power supply (VDD1) and can use either a 3 V or 5 V supply for the serial I/O (VDD2).
- What is the maximum power consumption of the AD7400YRWZ-REEL?
The maximum power consumption is 18 mA at 5.25 V.
- What safety and regulatory approvals does the AD7400YRWZ-REEL have?
The device has approvals from UL 1577, IEC / CSA 62368-1, IEC / CSA 61010-1, and DIN EN IEC 60747-17 (VDE 0884-17).
- What is the isolation voltage of the AD7400YRWZ-REEL?
The isolation voltage is 5000 V rms for 1 minute.
- What are some common applications of the AD7400YRWZ-REEL?
Common applications include AC motor controls, data acquisition systems, and A/D + opto-isolator replacements.
- How is the analog input signal processed by the AD7400YRWZ-REEL?
The analog input signal is continuously sampled by the analog modulator and converted into a high-speed, 1-bit data stream. The input information is contained in the output stream as a density of ones.
