AD7719BR-REEL7
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Analog Devices Inc. AD7719BR-REEL7

Manufacturer No:
AD7719BR-REEL7
Manufacturer:
Analog Devices Inc.
Package:
Tape & Reel (TR)
Description:
IC ADC 16/24BIT SIG-DELTA 28SOIC
Delivery:
Payment:
iso14001
iso45001
iso9001
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Product Introduction

Overview

The AD7719BR-REEL7, produced by Analog Devices Inc., is a low voltage, low power, factory-calibrated 16-/24-bit dual analog-to-digital converter (ADC). This device is designed as a complete analog front end for low frequency measurement applications. It integrates two high resolution Σ-Δ ADCs, along with various on-chip functions such as switchable matched excitation current sources, low-side power switches, a digital I/O port, and a temperature sensor. The AD7719 operates from a single 3 V or 5 V supply, making it suitable for a wide range of applications requiring high precision and low power consumption.

Key Specifications

ParameterValueUnitTest Conditions
Resolution24-bit (main channel), 16-bit (auxiliary channel)--
Output Update Rate5.4 Hz min, 105 Hz maxHzBoth channels synchronized
Integral Nonlinearity±10 ppm of FSR maxppmTMIN to TMAX
Offset Error±3 µV typµV-
Power Supply3 V or 5 VV-
Power Dissipation4.5 mW (both ADCs enabled), 2.85 mW (main ADC enabled)mW3 V supply
Input Voltage Range±1.024 × REFIN1/GAIN V (main channel), ±REFIN2 V (auxiliary channel)V-
Package28-lead SOIC and TSSOP--

Key Features

  • High resolution Σ-Δ ADCs with 24-bit main channel and 16-bit auxiliary channel.
  • Rail-to-rail input buffer and programmable gain amplifier (PGA).
  • On-chip temperature sensor and 4-bit digital I/O port.
  • Switchable matched excitation current sources and low-side power switches.
  • Reference detect circuit for external reference monitoring.
  • Software programmable output data rate.
  • Low power consumption with 4.5 mW power dissipation at 3 V supply.

Applications

  • Sensor measurement and temperature measurement.
  • Pressure measurement and weigh scales.
  • Portable instrumentation and 4 to 20 mA transmitters.

Q & A

  1. What is the resolution of the AD7719BR-REEL7?
    The AD7719BR-REEL7 has a 24-bit resolution for the main channel and a 16-bit resolution for the auxiliary channel.
  2. What are the power supply options for the AD7719BR-REEL7?
    The device operates from a single 3 V or 5 V supply.
  3. What is the power dissipation of the AD7719BR-REEL7?
    The power dissipation is 4.5 mW with both ADCs enabled and 2.85 mW with only the main ADC enabled at 3 V supply.
  4. What are the input voltage ranges for the AD7719BR-REEL7?
    The main channel accepts input voltage ranges from ±1.024 × REFIN1/GAIN V, and the auxiliary channel accepts ±REFIN2 V.
  5. Does the AD7719BR-REEL7 have on-chip temperature sensing?
    Yes, the device includes an on-chip temperature sensor.
  6. What are the package options for the AD7719BR-REEL7?
    The device is available in 28-lead SOIC and TSSOP packages.
  7. What are some typical applications of the AD7719BR-REEL7?
    Typical applications include sensor measurement, temperature measurement, pressure measurement, weigh scales, portable instrumentation, and 4 to 20 mA transmitters.
  8. Is the output data rate of the AD7719BR-REEL7 programmable?
    Yes, the output data rate is software programmable.
  9. Does the AD7719BR-REEL7 have switchable excitation current sources?
    Yes, the device includes switchable matched excitation current sources.
  10. What is the integral nonlinearity of the AD7719BR-REEL7?
    The integral nonlinearity is ±10 ppm of FSR max.

Product Attributes

Number of Bits:16, 24
Sampling Rate (Per Second):105
Number of Inputs:3, 6
Input Type:Differential, Pseudo-Differential, Single Ended
Data Interface:SPI, DSP
Configuration:MUX-PGA-ADC
Ratio - S/H:ADC:- 
Number of A/D Converters:2
Architecture:Sigma-Delta
Reference Type:External
Voltage - Supply, Analog:2.7V ~ 3.6V, 5V
Voltage - Supply, Digital:2.7V ~ 3.6V, 5V
Features:PGA, Simultaneous Sampling, Temperature Sensor
Operating Temperature:-40°C ~ 85°C
Package / Case:28-SOIC (0.295", 7.50mm Width)
Supplier Device Package:28-SOIC
Mounting Type:Surface Mount
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Similar Products

Part Number AD7719BR-REEL7 AD7718BR-REEL7 AD7719BR-REEL
Manufacturer Analog Devices Inc. Analog Devices Inc. Analog Devices Inc.
Product Status Obsolete Obsolete Obsolete
Number of Bits 16, 24 24 16, 24
Sampling Rate (Per Second) 105 1.37k 105
Number of Inputs 3, 6 4/5, 8/10 3, 6
Input Type Differential, Pseudo-Differential, Single Ended Differential, Pseudo-Differential Differential, Pseudo-Differential, Single Ended
Data Interface SPI, DSP SPI, DSP SPI, DSP
Configuration MUX-PGA-ADC MUX-PGA-ADC MUX-PGA-ADC
Ratio - S/H:ADC - - -
Number of A/D Converters 2 1 2
Architecture Sigma-Delta Sigma-Delta Sigma-Delta
Reference Type External External External
Voltage - Supply, Analog 2.7V ~ 3.6V, 5V 2.7V ~ 3.6V, 5V 2.7V ~ 3.6V, 5V
Voltage - Supply, Digital 2.7V ~ 3.6V, 5V 2.7V ~ 3.6V, 5V 2.7V ~ 3.6V, 5V
Features PGA, Simultaneous Sampling, Temperature Sensor PGA PGA, Simultaneous Sampling, Temperature Sensor
Operating Temperature -40°C ~ 85°C -40°C ~ 85°C -40°C ~ 85°C
Package / Case 28-SOIC (0.295", 7.50mm Width) 28-SOIC (0.295", 7.50mm Width) 28-SOIC (0.295", 7.50mm Width)
Supplier Device Package 28-SOIC 28-SOIC 28-SOIC
Mounting Type Surface Mount Surface Mount Surface Mount

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