AD7795
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AD7795

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

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Info: : PRODUCTION tooltip
Info: : PRODUCTION tooltip
Part Details
Part Models 2
1ku List Price Starting From $5.64
Features
  • Up to 23 effective bits
  • RMS noise: 40 nV @ 4.17 Hz, 85 nV @ 16.7 Hz
  • Current: 400 μA typical
  • Power-down: 1 μA maximum
  • Low noise, programmable gain, instrumentation amp
  • Band gap reference with 4 ppm/°C drift typical
  • Update rate: 4.17 Hz to 470 Hz
  • Six differential analog inputs
  • Internal clock oscillator
  • Simultaneous 50 Hz/60 Hz rejection
  • Reference detect
  • Programmable current sources
Additional Details
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The AD7794/AD7795 are low power, low noise, complete analog front ends for high precision measurement applications. They contain a low noise, 24-/16-bit Σ-Δ ADC with six differential inputs. The on-chip low noi se instrumentation amplifier means that signals of small amplitude can be interfaced directly to the ADC.

Each device contains a precision, low noise, low drift internal band gap reference, and can also accept up to two external differential references. Other on-chip features include programmable excitation current sources, burnout currents, and a bias voltage generator that is used to set the common-mode voltage of a channel to AVDD/2. The low-side power switch can be used to power down bridge sensors between conversions, minimizing the system’s power consumption. The AD7794/AD7795 can operate with either an internal clock or an external clock. The output data rate from each part can vary from 4.17 Hz to 470 Hz.

Both parts operate with a power supply from 2.7 V to 5.25 V. The B-grade parts (AD7794 and AD7795) are specified for a temperature range of −40°C to +105°C while the C-grade part (AD7794) is specified for a temperature range of −40°C to +125°C. They consume a current of 400 μA typical and are housed in a 24-lead TSSOP.

Applications

  • Temperature measurement
  • Pressure measurement
  • Weigh scales
  • Strain gage transducers
  • Gas analysis
Part Models 2
1ku List Price Starting From $5.64

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Documentation

Documentation

Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
AD7795BRUZ
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AD7795BRUZ-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 

Aug 10, 2021

- 21_0035

Amkor Philippines as an Alternate Site for TSSOP_4.4

Jul 23, 2014

- 13_0241

Qualification of ASE Chungli as an Alternate Assembly Site for Select 16L, 20L and 24L TSSOP Packages

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 

Aug 10, 2021

- 21_0035

arrow down

Amkor Philippines as an Alternate Site for TSSOP_4.4

Jul 23, 2014

- 13_0241

arrow down

Qualification of ASE Chungli as an Alternate Assembly Site for Select 16L, 20L and 24L TSSOP Packages

Jan 20, 2012

- 11_0218

arrow down

Halogen Free Material Change for Certain TSSOP Products at Carsem

Software and Part Ecosystem

Software and Part Ecosystem

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Evaluation Kit

Evaluation Kits 1

EVAL-AD7795

AD7795 Evaluation Board

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EVAL-AD7795

AD7795 Evaluation Board

AD7795 Evaluation Board

Product Detail

The EVAL-AD7795EBZ is a fully featured evaluation Board for the AD7795. 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).

Software

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Reference Designs

Reference Designs 1

Functional Block Diagram

PLC and DCS Universal Analog Input Using Either 4-Pin or 6-Pin Terminal Block

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cn0325

PLC and DCS Universal Analog Input Using Either 4-Pin or 6-Pin Terminal Block

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Circuits from the lab

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PLC and DCS Universal Analog Input Using Either 4-Pin or 6-Pin Terminal Block

Features and Benefits

  • PLC/DCS universal input module
  • 4-pin or 6-pin terminal block
  • Fully isolated
  • 16-bit sigma-delta ADC
View Detailed Reference Design external link

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