AD5934YRSZ

Product Overview

• Category: Integrated Circuit
• Use: Analog Front End (AFE) for impedance measurement applications
• Characteristics:
  • High precision impedance measurement
  • Programmable frequency sweep
  • On-chip temperature sensor
  • Serial interface
• Package: 24-pin LFCSP (Lead Frame Chip Scale Package)
• Essence: AD5934YRSZ is a high-performance analog front end designed for impedance measurement applications. It offers accurate and programmable frequency sweeps, making it suitable for a wide range of applications.
• Packaging/Quantity: The AD5934YRSZ is available in a 24-pin LFCSP package and is typically sold in reels of 2500 units.

Specifications

• Resolution: 12 bits
• Frequency Range: 1 Hz to 100 kHz
• Impedance Measurement Range: 100 Ω to 10 MΩ
• Temperature Sensor Accuracy: ±2°C
• Supply Voltage Range: 2.7 V to 5.5 V
• Operating Temperature Range: -40°C to +105°C

Pin Configuration

The AD5934YRSZ has a total of 24 pins. Here is the detailed pin configuration:

1. VIN1: Analog Input Channel 1
2. VIN2: Analog Input Channel 2
3. VIN3: Analog Input Channel 3
4. VIN4: Analog Input Channel 4
5. GND: Ground
6. AGND: Analog Ground
7. AVDD: Analog Power Supply
8. DVDD: Digital Power Supply
9. SDA: Serial Data Input/Output
10. SCL: Serial Clock Input
11. RESET: Reset Input
12. MCLK: Master Clock Input
13. VOUT: Analog Output
14. VREF: Reference Voltage Output
15. TEMP: Temperature Sensor Output 16-24: NC (No Connection)

Functional Features

• High precision impedance measurement with 12-bit resolution
• Programmable frequency sweep for versatile applications
• On-chip temperature sensor for accurate temperature compensation
• Serial interface for easy integration with microcontrollers and other devices

Advantages and Disadvantages

Advantages: - High precision impedance measurement - Programmable frequency sweep allows flexibility in applications - On-chip temperature sensor enables accurate temperature compensation - Serial interface simplifies integration with other devices

Disadvantages: - Limited frequency range compared to some other impedance measurement ICs - Requires external components for complete circuit implementation

Working Principles

The AD5934YRSZ utilizes a direct digital synthesis (DDS) technique to generate a programmable frequency sweep. It applies an excitation signal to the device under test (DUT) and measures the resulting voltage across the DUT. By analyzing the amplitude and phase of the measured voltage, the AD5934YRSZ calculates the impedance of the DUT.

Application Field Plans

The AD5934YRSZ finds applications in various fields, including: 1. Bioimpedance analysis 2. Electrochemical impedance spectroscopy 3. Impedance-based gas sensors 4. Industrial process control 5. Medical diagnostics 6. Non-destructive testing

Alternative Models

Here are some alternative models that offer similar functionality to the AD5934YRSZ: 1. AD5933: Similar specifications and features, but with a different package option. 2. AD5932: Lower resolution (10 bits) but offers a wider frequency range. 3. AD5930: Basic impedance measurement IC with limited features and lower resolution.

Note: Please refer to the respective datasheets for detailed specifications and pin configurations of these alternative models.

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