AD7798
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AD7798

3-Channel, Low Noise, Low Power, 16-Bit, Sigma Delta ADC with On-Chip In-Amp

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Info: : PRODUCTION tooltip
Info: : PRODUCTION tooltip
Part Details
Part Models 2
1ku List Price Starting From $4.89
Features
  • RMSnoise: 
    27 nV at 4.17 Hz (AD7799) 
    65 nV at 16.7 Hz (AD7799) 
    40 nV at 4.17 Hz (AD7798) 
    85 nV at 16.7 Hz (AD7798)
  • Current: 380 μA typical
  • Power-down: 1 μA maximum
  • Low noise, programmable gain, instrumentation amp
  • Internal clock oscillator
  • Simultaneous 50 Hz/60 Hz rejection
  • Reference detect
  • Low-side power switch
  • Programmable digital outputs
  • Burnout currents
  • Power supply: 2.7 V to 5.25 V
  • Update rate: 4.17 Hz to 470 Hz 3 differential inputs
Additional Details
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The AD7798 / AD7799 are low power, low noise, complete analog front ends for high precision measurement applications. The AD7798 / AD7799 contains a low noise, 16-/24-bit Σ-Δ ADC with three differential analog inputs. The on-chip, low noise instrumentation amplifier means that signals of small amplitude can be interfaced directly to the ADC. With a gain setting of 64, the rms noise is 27 nV for the AD7799 and 40 nV for the AD7798 when the update rate equals 4.17 Hz.

On-chip features include a low-side power switch, reference detect, programmable digital output pins, burnout currents, and an internal clock oscillator. The output data rate from the part is software-programmable and can be varied from 4.17 Hz to 470 Hz.

The part operates with a power supply from 2.7 V to 5.25 V. The AD7798 consumes a current of 300 μA typical, whereas the AD7799 consumes 380 μA typical. Both devices are housed in a 16-lead TSSOP package.

APPLICATIONS

  • Weigh scales
  • Pressure measurement
  • Strain gauge transducers
  • Gas analysis
  • Industrial process control
  • Instrumentation
  • Portable instrumentation
  • Blood analysis
  • Smart transmitters
  • Liquid/gas chromotography 6-digit DVM
Part Models 2
1ku List Price Starting From $4.89

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Documentation

Documentation

Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
AD7798BRUZ
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AD7798BRUZ-REEL
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Part Models

Product Lifecycle

PCN

Feb 2, 2024

- 23_0143

Qualification of an Alternate Wafer Fab Site for 0.5um TSMC CMOS Process 

Apr 5, 2021

- 21_0035

Amkor Philippines as an Alternate Site for TSSOP_4.4

Jan 20, 2012

- 11_0218

Halogen Free Material Change for Certain TSSOP Products at Carsem

Filter by Model

reset

Reset Filters

Part Models

Product Lifecycle

PCN

Feb 2, 2024

- 23_0143

arrow down

Qualification of an Alternate Wafer Fab Site for 0.5um TSMC CMOS Process 

Apr 5, 2021

- 21_0035

arrow down

Amkor Philippines as an Alternate Site for TSSOP_4.4

Jan 20, 2012

- 11_0218

arrow down

Halogen Free Material Change for Certain TSSOP Products at Carsem

Software & Part Ecosystem

Software & Part Ecosystem

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Evaluation Kit

Evaluation Kits 1

EVAL-AD7798

AD7798 Evaluation Board

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EVAL-AD7798

AD7798 Evaluation Board

AD7798 Evaluation Board

Product Detail

The EVAL-AD7798EBZ is a fully featured evaluation Board for the AD7798. The evaluation board can be connected to a PC via a standard USB interface. Software is provided enabling the user to perform detailed analysis of the ADC's performance.


Please note: This Evaluation software does not run on Windows 8 or Windows 10 (USB driver is non-compliant with OS >Windows 7).

Reference Designs

Reference Designs 5

Dual-Channel Colorimeter

Dual-Channel Colorimeter with Programmable Gain Transimpedance Amplifiers and Synchronous Detectors

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cn0312

Dual-Channel Colorimeter with Programmable Gain Transimpedance Amplifiers and Synchronous Detectors

cn0312

Circuits from the lab

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Dual-Channel Colorimeter with Programmable Gain Transimpedance Amplifiers and Synchronous Detectors

Features and Benefits

  • Dual channel RGB colorimeter
  • High sensitivity low noise transimpedance amplifier
  • Programmable gain TIA
View Detailed Reference Design external link
Low Power Gas Detector Circuit

Single Supply, Micropower Toxic Gas Detector Using an Electrochemical Sensor

Dual Gas Sensor Simplified Schematic

Dual Electrochemical Gas Sensor with Temperature Compensation

Ultralow Power, Single-Supply, 16-Bit Voltage Input ADC

Ultralow Power Light Recognition System for Smart Agriculture

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CN0397

Ultralow Power Light Recognition System for Smart Agriculture

CN0397

Circuits from the lab

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Ultralow Power Light Recognition System for Smart Agriculture

Features and Benefits

  • Color light recognition system 
  • Smart agriculture applications 
  • 16-bit digitization 
  • Low power 
  • Arduino-compatible shield format 

View Detailed Reference Design external link

Design & Integration Tools

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ZIP

1.31 M

Figure 1. CN0548 Block Diagram

Isolated High Voltage, High Current, Measurement Module

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cn0548

Isolated High Voltage, High Current, Measurement Module

cn0548

Circuits from the lab

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Isolated High Voltage, High Current, Measurement Module

Features and Benefits

  • Wide Current (+/-10 A) and Voltage (80 V) Input Range
  • Configurable gain/attenuation settings
  • Galvanically Isolated
  • Arduino form factor compatible
View Detailed Reference Design external link

Design & Integration Tools

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ZIP

4.98 M

Videos

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May 13, 2022

01:02

CN0548: Isolated High Voltage, High Current, Measurement Module

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