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Name: AD7194BCPZ-REEL7
Brand: Analog Devices Inc.
SKU: AD7194BCPZ-REEL7
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Analog Devices Inc. AD7194BCPZ-REEL7

Part No.:: AD7194BCPZ-REEL7

Manufacturer:: Analog Devices Inc.

Package:: 32-WFQFN Exposed Pad, CSP

Datasheet:: AD7194BCPZ-REEL7.pdf

Description:: IC ADC 24BIT SIGMA-DELTA 32LFCSP

In Stock:: 186

Quantity:: Add To Cart

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AD7194BCPZ-REEL7 Specifications

Packaging:
Tape & Reel (TR),Cut Tape (CT),Digi-Reel®
Series:
-
Product Status:
Active
Number of Bits:
24
Sampling Rate(PerSecond):
-
Number of Inputs:
8, 16
Input Type:
Differential, Pseudo-Differential
Data Interface:
SPI, DSP
Configuration:
MUX-PGA-ADC
Ratio-S/H:ADC:
-
Number of A/D Converters:
1
Architecture:
Sigma-Delta
Reference Type:
External
Voltage-Supply Analog:
3V ~ 5.25V
Voltage-Supply Digital:
2.7V ~ 5.25V
Features:
PGA
Operating Temperature:
-40°C ~ 105°C

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AD7194BCPZ-REEL7 information

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AD7194BCPZ-REEL7 Typical application Circuitry

AD7194BCPZ-REEL7

A full analog front end with minimal noise for high precision measurement applications is the AD7194BCPZ-REEL7. It has a very low noise programmable gain amplifier (PGA) and a 24-bit sigma-delta (Σ-Δ) analog-to-digital converter (ADC).

Function: The primary function of the AD7194BCPZ-REEL7 is to convert analog signals into high-resolution digital data. It is designed for applications requiring high accuracy and low noise, such as process control, temperature measurement, and weighing systems.

Application Scenarios: This AD7194BCPZ-REEL7 chip is commonly used in industrial and instrumentation applications, including temperature and pressure measurement systems, medical devices, and process control systems.

Parameter Features: The AD7194BCPZ-REEL7 features a 24-bit Σ-Δ ADC, a low noise PGA with gain settings from 1 to 128, a 4.92 kHz output data rate, and a low power consumption of 4.65 mW at 4.92 kHz.

Circuit Design for Temperature Measurement System:

1. Power Supply: Connect a stable +3.3V power supply to the AVDD and DVDD pins (pins 23 and 22, respectively) for analog and digital power. Decouple these pins with 10 µF and 0.1 µF capacitors to ground to ensure power supply stability.

2. Reference Voltage: Connect a 2.5V precision reference voltage to the REFIN+/REFIN- pins (pins 13 and 14). This reference voltage determines the full-scale range of the ADC.

3. Analog Input: Connect the AD7194BCPZ-REEL7 positive and negative terminals of a temperature sensor (e.g., RTD or thermocouple) to the AIN1+ and AIN1- pins (pins 15 and 16) for differential input.

4. Clock Source: Connect an external 4.9152 MHz crystal oscillator between the MCLK1 and MCLK2 pins (pins 9 and 10) to provide a clock source for the ADC.

5. Digital Interface: Connect the SPI interface pins (CS, SCLK, DIN, and DOUT/RDY) to the microcontroller for data communication. CS is pin 24, SCLK is pin 6, DIN is pin 5, and DOUT/RDY is pin 7.

6. Configuration: Configure the ADC through the SPI interface to set the desired gain, channel, and filter settings for the temperature measurement.

7. Data Acquisition: Monitor the DOUT/RDY pin for data ready indication and read the 24-bit conversion result through the SPI interface.

Design Considerations:

- Ensure that the power supply and reference voltage are stable and noise-free to maintain the accuracy of the ADC.

- Use proper filtering and shielding techniques to minimize noise and interference in the analog input signal.

- Consider the thermal drift and non-linearity of the temperature sensor and calibrate the system accordingly.

- Implement error checking and handling in the software to detect and correct communication errors or ADC overrange conditions.

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6. What is the process for return or replacement of AD7194BCPZ-REEL7?

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(1)Such as a deficiency in quantity, delivery of wrong items, and apparent external defects (breakage and rust, etc.), and we acknowledge such problems.

(2)We are informed of the defect described above within 90 days after the delivery of AD7194BCPZ-REEL7.

(3)The PartNo is unused and only in the original unpacked packaging.

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(1)Inform us within 90 days

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