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AD7713

Features: Charge Balancing ADC24 Bits No Missing Codes0.0015% NonlinearityThree-Channel Programmable Gain Front EndGains from 1 to 128Two Differential InputsOne Single Ended High Voltage InputLow-Pass Filter with Programmable Filter CutoffsAbility to Read/Write Calibration CoefficientsBidirectiona...

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SeekIC No. : 004270721 Detail

AD7713: Features: Charge Balancing ADC24 Bits No Missing Codes0.0015% NonlinearityThree-Channel Programmable Gain Front EndGains from 1 to 128Two Differential InputsOne Single Ended High Voltage InputLow-Pa...

AD7713 Data Sheet

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Part Number:
AD7713
Supply Ability:
5000

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  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Product Details

Description



Features:

Charge Balancing ADC
24 Bits No Missing Codes0.0015% Nonlinearity
Three-Channel Programmable Gain Front End
Gains from 1 to 128
Two Differential Inputs
One Single Ended High Voltage Input
Low-Pass Filter with Programmable Filter Cutoffs
Ability to Read/Write Calibration Coefficients
Bidirectional Microcontroller Serial Interface
Single Supply Operation
Low Power (3.5 mW typ) with Power-Down Mode
(150 W typ)
APPLICATIONS
Loop Powered (Smart) Transmitters
RTD Transducers
Process Control
Portable Industrial Instrumentsv




Pinout

Connection Diagram

AD7713 Diagram




Specifications

AVDD to AGND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.3 V to +12 V
AVDD to DGND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.3 V to +12 V
DVDD to AGND . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . 0.3 V to +6 V
DVDD to DGND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . 0.3 V to +6 V
AGND to DGND . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . 0.3 V to +6 V
AIN1, AIN2 Input Voltage
to AGND . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . .0.3 V to AVDD + 0.3 V
AIN3 Input Voltage to AGND . . . . . . . . . .. . . . . . . . . . . . . . . . 0.3 V to +22 V
Reference Input Voltage to AGND . . . . . . . . . . . . . . . . 0.3 V to AVDD + 0.3 V
Digital Input Voltage to DGND . . . .. . . . . . . . . . . . . . . 0.3 V to AVDD + 0.3 V
Digital Output Voltage to DGND . . . . . . . . . . . . . . . . . . 0.3 V to DVDD + 0.3 V
Operating Temperature Range
Commercial (A Version) . . . . . . . . . . . . . . . . . . . . . . . . . . . . .40°C to +85°C
Extended (S Version) . . . . . . . . . . . . .. . . . . . . . . . . . . . . . .55°C to +125°C
Storage Temperature Range . . . . . . . . .. . . . .. . . . .. . . . .. .65°C to +150°C
Junction Temperature . . . . . . . . . . . . . . . . . . . . . . . . ... . .. . .... . . . .+150°C
Plastic DIP Package, Power Dissipation . . . . . . .. . . . .. . . . .. . .. . . . . . 450 mW
JA Thermal Impedance . . . . . . . . . . . . . . . . . . . . . . .. . . . .. .. . .. . .105°C/W
Lead Temperature, Soldering (10 sec) . . . . . . .. . . . .. . . . . . . . .. . .. .+260°C
Cerdip Package, Power Dissipation . . . . . . . . . .. . . . .. . . . . . .. . . . . . 450 mW
JA Thermal Impedance . . . . . . . . . . . . . . . . . . . . . . .. . . . .. .. . .. . . .70°C/W
Lead Temperature, Soldering . . . . . . . . . . . . . . .. . . . .. . . . . ... . .. . .+300°C
SOIC Package, Power Dissipation . . . . . . . . . . . . . . . .. . . . .. . .. . . . . 450 mW
JA Thermal Impedance . . . . . . . . . . . . . . . . . . .. . . . .. . . . . .. . ... . .75°C/W
Lead Temperature, Soldering
Vapor Phase (60 sec) . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . .... .. . .+215°C
Infrared (15 secs) . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . ... .. . .+220°C
Power Dissipation (Any Package) to +75°C . . . . . .. . . . .. . . . . . .. . . 450 mW

Resolution (Bits) 24bit
T-Put Rate 205SPS
# Chan 3
Supply V Dual(+5, -5),Multi(±5, +5 logic),Single(+5)
Pwr Diss (max) 5.5mW
Interface Ser
Ain Range (2Vref/PGA Gain) p-p,Uni (Vref) x 4,Uni (Vref)/(PGA Gain)
SNR (dB) 131dB
Pkg Type DIP,SOIC





Description

The AD7713 is a complete analog front end for low frequency measurement applications. The device accepts low level signals directly from a transducer or high level signals (4 × VREF) and outputs a serial digital word. It employs a sigma-delta con- version technique to realize up to 24 bits of no missing codes performance. The input signal is applied to a proprietary pro-grammable gain front end based around an analog modulator. The modulator output is processed by an on-chip digital filter.The first notch of this digital filter can be programmed via the on-chip control register allowing adjustment of the filter cutoff and settling time.

The part features two differential analog inputs and one single-ended high level analog input as well as a differential reference input. It can be operated from a single supply (AVDD and DVDD at +5 V). The part provides two current sources which can be used to provide excitation in three-wire and four-wire RTD con-figurations. The AD7713 thus performs all signal conditioning and conversion for a single, dual or three-channel system.

The AD7713 is ideal for use in smart, microcontroller-based systems. Gain settings, signal polarity and RTD current control can be configured in software using the bidirectional serial port. The AD7713 contains self-calibration, system calibration and background calibration options and also allows the user to read and to write the on-chip calibration registers.






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