Overview
The AD8450ASTZ, produced by Analog Devices Inc., is a high-performance Analog Front End (AFE) specifically designed for precision battery cell testing and monitoring applications. This component integrates a precision programmable gain instrumentation amplifier, voltage and current sensing, and control functions, making it an ideal solution for advanced battery management systems. The AD8450ASTZ offers excellent accuracy, performance over temperature, and flexibility in functionality, all within a compact 80-lead LQFP package.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Analog Supply Voltage (AVCC - AVEE) | 5 | 36 | V | |
| Digital Supply Voltage (DVCC - DGND) | 3 | 5 | V | |
| Operating Temperature Range | -40 | +85 | °C | |
| Number of Channels | 2 | |||
| Package Type | 80-LQFP | |||
| Quiescent Current (AVCC) | 7 | 10 | mA | |
| Quiescent Current (AVEE) | 6.5 | 10 | mA | |
| Quiescent Current (DVCC) | 40 | 70 | µA | |
| Small Signal Gain Bandwidth Product | 3 | MHz | ||
| Slew Rate | 1 | V/µs | ||
| Voltage Noise (f = 1 kHz) | 10 | nV/√Hz | ||
| Voltage Noise, Peak-to-Peak (f = 0.1 Hz to 10 Hz) | 0.4 | µV p-p |
Key Features
- Precision Programmable Gain Instrumentation Amplifier: Allows for precise signal conditioning and amplification.
- Automated Constant Current (CC) and Constant Voltage (CV) Switching: Transparent switching between CC and CV modes, controlled by TTL logic level input.
- Resistor Programmable Overvoltage and Overcurrent Detection: Enhances safety and reliability by detecting and responding to overvoltage and overcurrent conditions.
- Current Sharing Circuitry: Balances the output current of multiple bridged channels, ensuring consistent performance.
- Dual Channel Capability: Supports simultaneous data acquisition on two separate channels, increasing throughput.
- Wide Range of Supply Voltages: Compatible with analog supply voltages from 5V to 36V and digital supply voltages from 3V to 5V.
- Compact LQFP Package: Optimizes board space utilization with an 80-lead LQFP package.
- Precision Temperature Sensing and Control: Ensures accurate temperature monitoring and control.
- Programmable Output Current Limits and Alarms: Allows for customized current limits and alarm settings.
- Automated Calibration of All Parameters: Simplifies setup and ensures accurate performance.
Applications
- Research on Battery Technology: Ideal for advanced battery cell testing and monitoring.
- Energy Storage Solutions: Suitable for various energy storage applications requiring precise battery management.
- Industrial Data Acquisition Systems: Used in industrial settings for precise signal conditioning and data acquisition.
- Automation Systems: Enhances automation by providing accurate and reliable data acquisition and control.
- Robotics: Supports robotic systems that require precise battery management and data acquisition.
- Precision Measurement Devices: Used in devices that require high accuracy in signal conditioning and measurement.
Q & A
- Q: What is the primary application of the AD8450ASTZ?
A: The AD8450ASTZ is primarily designed for precision battery cell testing and monitoring applications.
- Q: What is the operating temperature range of the AD8450ASTZ?
A: The operating temperature range is from -40°C to +85°C.
- Q: How many channels does the AD8450ASTZ support?
A: The AD8450ASTZ supports two channels for simultaneous data acquisition.
- Q: What is the package type of the AD8450ASTZ?
A: The AD8450ASTZ is available in an 80-lead LQFP package.
- Q: What are the supply voltage ranges for the AD8450ASTZ?
A: The analog supply voltage range is from 5V to 36V, and the digital supply voltage range is from 3V to 5V.
- Q: Does the AD8450ASTZ support automated calibration?
A: Yes, the AD8450ASTZ supports automated calibration of all parameters.
- Q: What safety features does the AD8450ASTZ include?
A: The AD8450ASTZ includes resistor programmable overvoltage and overcurrent detection.
- Q: How does the current sharing circuitry work in the AD8450ASTZ?
A: The current sharing circuitry balances the output current of multiple bridged channels to ensure consistent performance.
- Q: Is the AD8450ASTZ compatible with various microcontrollers?
A: Yes, the AD8450ASTZ is compatible with various microcontrollers and digital systems within its voltage supply range.
- Q: What is the quiescent current of the AD8450ASTZ?
A: The quiescent current for AVCC is 7-10 mA, for AVEE is 6.5-10 mA, and for DVCC is 40-70 µA.
