AD7190BRUZ -REEL Detailed explanation of pin function specifications and circuit principle instructions

The part number AD7190BRUZ-REEL belongs to Analog Devices, a leading brand in the field of high-performance analog, mixed-signal, and digital signal processing. This specific model is part of the AD7190 series, which is a high-precision 24-bit sigma-delta ADC (Analog-to-Digital Converter) typically used for industrial measurement systems.

Package and Pin Description

Package: The AD7190BRUZ is a LFCSP (Lead Frame Chip Scale Package), and specifically, it comes in a 16-lead LFCSP package. The "REEL" suffix typically means it is provided in a reel for automated assembly.

Pin Count: 16 Pins.

Below is a detailed pinout of the AD7190BRUZ-REEL, with each pin's function description:

Pin Number Pin Name Pin Function Description 1 VDD Supply voltage input. Connect to positive supply voltage (typically 2.7V to 5.25V). 2 AGND Analog ground. Connect to the analog ground of the system. 3 AIN1+ Analog input channel 1 positive terminal. 4 AIN1- Analog input channel 1 negative terminal. 5 AIN2+ Analog input channel 2 positive terminal. 6 AIN2- Analog input channel 2 negative terminal. 7 VREF+ Positive reference input. This is used to set the reference voltage for the ADC. 8 VREF- Negative reference input. Used together with VREF+ for setting reference voltage. 9 CS Chip select input. Used to select the AD7190 device for communication. 10 SDO Serial data output. This pin outputs the digital data from the ADC to the microcontroller. 11 SDI Serial data input. This is used to send data to the AD7190. 12 SCK Serial clock input. This pin provides the clock signal to the AD7190 for communication. 13 REFOUT Reference output. This can be used to supply a reference voltage for other devices in the system. 14 RESET Reset input. A low logic level on this pin resets the AD7190. 15 PD Power -down pin. Allows you to put the device into a low-power state. 16 AGND Analog ground (again). Ground pin for the analog section.

Pin Function Specifications

The detailed function for each pin is provided above, and here are additional usage guidelines:

VDD (Pin 1): It should be connected to a supply voltage between 2.7V and 5.25V. Ensure proper decoupling near the VDD pin for stable operation.

AGND (Pins 2, 16): These pins should be connected to the analog ground of the system to ensure accurate voltage measurements and reduce noise.

AIN+ and AIN- (Pins 3-6): These are the differential analog input channels. You can choose between two input channels depending on your application.

VREF+ and VREF- (Pins 7 and 8): The reference voltage (VREF) is crucial for accurate measurements. These pins should be connected to a stable reference source, and the voltage applied between VREF+ and VREF- determines the full-scale voltage range.

CS (Pin 9): This is the chip select pin for SPI communication. Pull it low to activate the AD7190.

SDO (Pin 10): This pin outputs the serial data from the AD7190. This is typically connected to the microcontroller or processing unit.

SDI (Pin 11): Used for sending configuration or data to the AD7190 through SPI.

SCK (Pin 12): The clock input for SPI communication.

REFOUT (Pin 13): Provides a reference voltage output that can be used to reference other devices.

RESET (Pin 14): The reset pin allows you to reset the AD7190 device, which is often required during system initialization.

PD (Pin 15): If you want to save power when the device is not in use, you can activate this pin to put the AD7190 in a low-power mode.

Frequently Asked Questions (FAQ)

What is the operating voltage range for AD7190BRUZ? The AD7190BRUZ operates within a voltage range of 2.7V to 5.25V. How do I connect the reference voltage for AD7190BRUZ? Connect a stable voltage source between VREF+ (pin 7) and VREF- (pin 8). This reference determines the ADC's measurement range. What type of communication does AD7190BRUZ use? The AD7190BRUZ uses SPI (Serial Peripheral interface ) for communication with microcontrollers. What is the purpose of the RESET pin? The RESET pin (pin 14) resets the AD7190BRUZ to its default state, useful during system initialization. Can I use the REFOUT pin to power other devices? Yes, the REFOUT pin (pin 13) provides a reference voltage output that can be used for other devices, though it should be stable and within the desired range. How do I put the AD7190BRUZ into low-power mode? You can activate the low-power mode by pulling the PD (Power-down) pin low. What is the function of the AIN pins (3-6)? The AIN pins are differential analog input channels for the analog-to-digital conversion process. What is the data format for the SDO pin? The SDO pin outputs digital data in binary format, representing the ADC conversion result. How do I ensure accuracy in measurements with the AD7190BRUZ? To ensure accuracy, use a stable and clean reference voltage (VREF) and ground connections, and implement proper signal conditioning for analog inputs.

Can the AD7190BRUZ be used in battery-powered applications?

Yes, with proper power management and low-power modes, the AD7190BRUZ can be used in battery-operated systems.

What is the sampling rate of the AD7190BRUZ?

The AD7190BRUZ has a programmable data rate, typically ranging from 10 Hz to 4 kHz.

Is the AD7190BRUZ suitable for high-precision industrial applications?

Yes, the AD7190BRUZ offers high-precision measurements with a 24-bit resolution, making it ideal for industrial applications.

How many channels can the AD7190BRUZ measure?

The AD7190BRUZ can measure two differential input channels, AIN1 and AIN2.

Can I use the AD7190BRUZ for single-ended measurements?

Yes, you can configure the AD7190BRUZ to perform single-ended measurements by connecting one of the differential inputs to ground.

What is the maximum input voltage for the AIN pins?

The maximum input voltage for the AIN pins should not exceed the supply voltage (VDD) or go below ground (AGND).

What is the resolution of the AD7190BRUZ?

The AD7190BRUZ provides 24-bit resolution for high-precision measurements.

How can I configure the AD7190BRUZ for continuous conversion?

To enable continuous conversion, configure the device via the SPI interface to continuously sample and output data.

What is the power consumption of the AD7190BRUZ?

Power consumption varies depending on the sampling rate and operational mode, but it is typically low, especially when in power-down mode.

How do I interface the AD7190BRUZ with a microcontroller?

Use the SPI interface (SDO, SDI, SCK, and CS pins) to communicate with a microcontroller for data exchange and configuration.

Can I use the AD7190BRUZ for temperature sensing?

While the AD7190BRUZ is not a dedicated temperature sensor, you can interface it with external temperature sensors (e.g., thermocouples or RTDs) to measure temperature.

This detailed breakdown of the AD7190BRUZ pinout, specifications, and frequently asked questions provides a comprehensive understanding of how to use the device in your applications.