Overview
The AD7400YRWZ, produced by Analog Devices Inc., is a second-order, sigma-delta (Σ-Δ) modulator designed for high-performance data acquisition applications. This component converts an analog input signal into a high-speed, 1-bit data stream with on-chip digital isolation, utilizing Analog Devices' iCoupler® technology. It operates from a 5 V power supply and accepts a differential input signal of ±200 mV (±320 mV full scale). The AD7400YRWZ eliminates the need for external sample-and-hold circuitry and provides a data rate of 10 MHz, making it suitable for various industrial and control systems.
Key Specifications
| Parameter | Characteristic | Unit |
|---|---|---|
| Operating Temperature Range | −40°C to +105°C | °C |
| Supply Voltage (VDD1) | 4.5 V to 5.25 V | V |
| Supply Voltage (VDD2) | 3 V to 5.5 V | V |
| Analog Input Voltage Range | ±200 mV (±320 mV full scale) | mV |
| Dynamic Input Current | ±8 µA | µA |
| Input Capacitance | 10 pF | pF |
| Signal-to-(Noise + Distortion) Ratio (SINAD) | 70 dB min (−40°C to +85°C) | dB |
| Signal-to-Noise Ratio (SNR) | 71 dB min | dB |
| Total Harmonic Distortion (THD) | −88 dB typ | dB |
| Effective Number of Bits (ENOB) | 11.5 Bits | Bits |
| Isolation Transient Immunity | 25 kV/µs min | kV/µs |
| Package Type | 16-lead SOIC | |
| Safety and Regulatory Approvals | UL 1577, IEC / CSA 62368-1, IEC / CSA 61010-1, DIN EN IEC 60747-17 (VDE 0884-17) |
Key Features
- Second-order sigma-delta modulator
- 10 MHz clock rate
- 16 bits no missing codes, ±2 LSB INL typical at 16 bits
- On-board digital isolator and reference
- Low power operation: 18 mA maximum at 5.25 V
- Operating range: −40°C to +105°C
- On-chip digital isolation based on iCoupler® technology
- Continuous sampling of analog input signal, eliminating the need for external sample-and-hold circuitry
- Serial I/O compatible with 5 V or 3 V supply (VDD2)
Applications
- AC motor controls
- Data acquisition systems
- A/D + opto-isolator replacements
- Industrial Control Systems
- High Speed Data Acquisition for PCs
- Process Control and Industrial Automation
Q & A
- What is the primary function of the AD7400YRWZ?
The AD7400YRWZ is a second-order sigma-delta modulator that converts an analog input signal into a high-speed, 1-bit data stream with on-chip digital isolation.
- What is the operating temperature range of the AD7400YRWZ?
The operating temperature range is −40°C to +105°C.
- What are the supply voltage ranges for VDD1 and VDD2?
VDD1: 4.5 V to 5.25 V, VDD2: 3 V to 5.5 V.
- What is the analog input voltage range for the AD7400YRWZ?
The analog input voltage range is ±200 mV (±320 mV full scale).
- What is the signal-to-noise ratio (SNR) of the AD7400YRWZ?
The SNR is 71 dB minimum.
- What type of package does the AD7400YRWZ come in?
The AD7400YRWZ comes in a 16-lead SOIC package.
- What safety and regulatory approvals does the AD7400YRWZ have?
The AD7400YRWZ has approvals from UL 1577, IEC / CSA 62368-1, IEC / CSA 61010-1, and DIN EN IEC 60747-17 (VDE 0884-17).
- What are some common applications of the AD7400YRWZ?
Common applications include AC motor controls, data acquisition systems, A/D + opto-isolator replacements, and industrial control systems.
- How does the AD7400YRWZ achieve digital isolation?
The AD7400YRWZ achieves digital isolation using Analog Devices' iCoupler® technology.
- What is the clock rate of the AD7400YRWZ?
The clock rate is 10 MHz typical.
