Overview
The AD7691BRMZ is an 18-bit analog-to-digital converter (ADC) produced by Analog Devices Inc. It is part of the PulSAR series, known for its high precision and speed. This ADC is designed for data acquisition applications and features a single differential input, making it suitable for a wide range of tasks that require accurate and high-resolution data conversion.
The AD7691BRMZ operates from a single power supply ranging from 2.3V to 5.5V and is housed in a 10-lead MSOP or 10-lead QFN package. It is compatible with SPI and DSP data interfaces, allowing for versatile integration into various electronic systems.
Analog Devices maintains high standards of quality and reliability, ensuring the AD7691BRMZ offers robust performance and long-term sustainability.
Key Specifications
| Parameter | Value |
|---|---|
| Number of Bits | 18 |
| Sampling Rate | 250 kSPS |
| Input Type | Differential |
| Supply Voltage (Analog and Digital) | 2.3 V ~ 5.5 V |
| Reference Type | External |
| Package / Case | 10-MSOP, 10-TFSOP |
| Operating Temperature | -40°C ~ 85°C |
| Data Interface | SPI, DSP |
| Architecture | SAR (Successive Approximation) |
| Integral Nonlinearity (INL) | 1.5 LSB maximum |
| Dynamic Range | 102 dB typical at 250 kSPS |
Key Features
- High Resolution and Speed: The AD7691BRMZ offers an 18-bit resolution with a sampling rate of 250 kSPS, making it ideal for applications requiring high accuracy and speed.
- Differential Input: The ADC features a single differential input, which enhances noise rejection and improves signal integrity.
- Versatile Power Supply: It operates from a single power supply between 2.3V and 5.5V, making it flexible for various system designs.
- SPI and DSP Compatibility: The ADC supports SPI and DSP data interfaces, allowing for easy integration with a wide range of microcontrollers and digital signal processors.
- Low Power Consumption: The power consumption scales linearly with throughput, making it efficient for battery-powered and low-power applications.
- Daisy-Chaining Capability: The SPI-compatible serial interface allows multiple ADCs to be daisy-chained on a single 3-wire bus, enhancing system flexibility.
- Optional Busy Indicator: The ADC provides an optional busy indicator, which can be used to monitor the conversion status.
Applications
- Data Acquisition Systems: Ideal for data acquisition tasks that require high accuracy and speed.
- Instrumentation: Suitable for use in various instrumentation applications, including medical instruments and seismic data acquisition systems.
- Signal Processing: Used in signal processing applications where high-resolution and fast conversion rates are necessary.
- Communication Systems: Can be used in communication systems that require precise analog-to-digital conversion.
- Battery-Powered Equipment: Its low power consumption makes it suitable for battery-powered devices.
Q & A
- What is the resolution of the AD7691BRMZ ADC?
The AD7691BRMZ has an 18-bit resolution.
- What is the sampling rate of the AD7691BRMZ?
The sampling rate is 250 kSPS.
- What type of input does the AD7691BRMZ support?
The AD7691BRMZ supports a single differential input.
- What is the operating voltage range for the AD7691BRMZ?
The operating voltage range is from 2.3V to 5.5V for both analog and digital supplies.
- What data interfaces does the AD7691BRMZ support?
The AD7691BRMZ supports SPI and DSP data interfaces.
- What is the package type for the AD7691BRMZ?
The AD7691BRMZ is available in 10-MSOP and 10-TFSOP packages.
- What is the operating temperature range for the AD7691BRMZ?
The operating temperature range is from -40°C to 85°C.
- Can multiple AD7691BRMZ ADCs be daisy-chained?
- Is the AD7691BRMZ RoHS compliant?
- What is the typical dynamic range of the AD7691BRMZ?
The typical dynamic range is 102 dB at 250 kSPS.
