Overview
The AD7667AST is a 16-bit, 1 MSPS (Mega Samples Per Second) PulSAR® (Successive Approximation Register) 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-speed and low-power applications. It features a charge redistribution SAR architecture and includes an internal conversion clock, internal reference, and error correction circuits. The AD7667AST is available in either a 48-lead LQFP (Low Profile Quad Flat Package) or a 48-lead LFCSP (Lead Frame Chip Scale Package), allowing for flexible configurations as either a serial or parallel interface.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Resolution | 16 bits | |
| Sampling Rate | 1 MSPS | |
| Power Supply | 5 V | |
| Operating Temperature Range | -40°C to +85°C | |
| Analog Input Range | 0 to 5 V, ±5 V, ±10 V (configurable) | |
| Interface | Serial and Parallel | |
| Package Type | 48-lead LQFP or 48-lead LFCSP | |
| Signal-to-Noise Ratio (SNR) | Up to 92 dB | |
| Total Harmonic Distortion (THD) | -100 dB |
Key Features
- High-Speed Modes: The AD7667AST features three operating modes: Warp (high-speed), Normal (fast), and Impulse (low-power) modes, allowing for flexibility in various applications.
- Internal Reference and Clock: Includes an internal reference and conversion clock, simplifying system design and reducing external component count.
- Error Correction Circuits: Equipped with error correction circuits to ensure high accuracy in both DC and AC parameters such as gain, offset, linearity, SNR, and THD.
- Flexible Interface Options: Supports both serial and parallel system interface ports, enabling versatile integration into different system architectures.
- Low Power Consumption: The Impulse mode allows for reduced power consumption, making it suitable for low-power applications.
Applications
- Industrial Automation: Suitable for high-accuracy data acquisition in industrial automation systems.
- Medical Devices: Used in medical equipment requiring precise analog-to-digital conversion, such as patient monitoring systems and diagnostic devices.
- Aerospace and Defense: Applicable in aerospace and defense systems where high reliability and accuracy are critical.
- Test and Measurement Equipment: Ideal for use in test and measurement instruments that require high-speed and high-accuracy ADCs.
Q & A
- What is the resolution of the AD7667AST ADC?
The AD7667AST has a resolution of 16 bits.
- What are the different operating modes of the AD7667AST?
The AD7667AST operates in three modes: Warp (high-speed), Normal (fast), and Impulse (low-power) modes).
- What is the sampling rate of the AD7667AST?
The sampling rate of the AD7667AST is up to 1 MSPS).
- What types of interfaces does the AD7667AST support?
The AD7667AST supports both serial and parallel system interface ports).
- What is the operating temperature range of the AD7667AST?
The operating temperature range is from -40°C to +85°C).
- Can the AD7667AST be used in low-power applications?
Yes, the AD7667AST has an Impulse mode that reduces power consumption, making it suitable for low-power applications).
- What are the package options for the AD7667AST?
The AD7667AST is available in either a 48-lead LQFP or a 48-lead LFCSP package).
- Does the AD7667AST have internal reference and clock?
Yes, the AD7667AST includes an internal reference and conversion clock).
- How is the AD7667AST controlled during the conversion process?
The AD7667AST is controlled by the CNVST signal, which initiates the conversion process. Once initiated, the conversion cannot be restarted or aborted until it is complete).
- What are the typical applications of the AD7667AST?
The AD7667AST is typically used in industrial automation, medical devices, aerospace and defense, and test and measurement equipment).
