Overview
The AD7675ACP is a 16-bit, 100 kSPS (kilosamples per second), fully differential analog-to-digital converter (ADC) produced by Analog Devices Inc. This device operates from a single 5 V power supply and is designed for high-performance applications. The AD7675 is fabricated using Analog Devices’ high-performance 0.6 micron CMOS process and is available in a 48-lead LQFP (Lead Frame Chip Scale Package) or LFCSP (Lead Frame Chip Scale Package) with operation specified from –40°C to +85°C. It is hardware factory calibrated and comprehensively tested to ensure excellent ac and dc parameters such as signal-to-noise ratio (SNR), total harmonic distortion (THD), gain, offset, and linearity.
Key Specifications
| Parameter | Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Resolution | 16 | Bits | |||
| Sampling Rate | 100 | kSPS | |||
| Analog Input Voltage Range | V | ||||
| Power Supply | 5 | V | |||
| Power Dissipation (Typical) | 17 | mW | |||
| Power Dissipation (Power-Down) | 7 | μW | |||
| Integral Nonlinearity (INL) | 1.5 | LSB | |||
| Signal-to-Noise Ratio (SNR) | 92 | 94 | dB | ||
| Total Harmonic Distortion (THD) | dB |
Key Features
- Excellent Linearity: The AD7675 has a maximum integral nonlinearity of 1.5 LSB with no missing 16-bit codes.
- Superior AC Performance: The device offers a minimum dynamic range of 92 dB, with a typical value of 94 dB.
- Fast Throughput: It is a 100 kSPS, charge redistribution, 16-bit SAR ADC with internal error correction circuitry.
- Single-Supply Operation: The AD7675 operates from a single 5 V supply and has low power dissipation, decreasing with throughput to as low as 15 μW at 100 SPS and 7 μW in power-down mode.
- Versatile Interface: It features a serial or parallel interface, compatible with either 3 V or 5 V logic, supporting SPI and QSPI protocols).
Applications
- CT Scanners: Suitable for high-resolution imaging applications.
- Data Acquisition and Instrumentation: Ideal for precision measurement and data acquisition systems.
- Spectrum Analysis: Used in spectral analysis equipment due to its high SNR and low THD.
- Medical Instruments: Applied in medical devices requiring high accuracy and reliability.
- Battery-Powered Systems: Its low power consumption makes it suitable for battery-powered devices.
- Process Control: Used in industrial process control systems for precise measurement and control.
Q & A
- What is the resolution of the AD7675ACP?
The AD7675ACP has a resolution of 16 bits. - What is the sampling rate of the AD7675ACP?
The sampling rate of the AD7675ACP is 100 kSPS. - What is the power supply voltage for the AD7675ACP?
The AD7675ACP operates from a single 5 V power supply. - What is the typical power dissipation of the AD7675ACP?
The typical power dissipation is 17 mW, decreasing with throughput. - What is the integral nonlinearity (INL) of the AD7675ACP?
The maximum integral nonlinearity is 1.5 LSB. - What are the key applications of the AD7675ACP?
Key applications include CT scanners, data acquisition and instrumentation, spectrum analysis, medical instruments, battery-powered systems, and process control. - What types of interfaces does the AD7675ACP support?
The AD7675ACP supports both serial and parallel interfaces, compatible with 3 V or 5 V logic, and includes SPI and QSPI protocols. - What is the operating temperature range of the AD7675ACP?
The operating temperature range is from –40°C to +85°C. - What is the package type of the AD7675ACP?
The AD7675ACP is available in a 48-lead LQFP or LFCSP package. - Is the AD7675ACP factory calibrated?
Yes, the AD7675ACP is hardware factory calibrated and comprehensively tested.
