AD7712ARZ 24-Bit Σ-Δ ADC with Low Noise On-Chip PGA 5V/3V Operation High Accuracy Flexible Filtering and Low Power for Precision Sensing

FEATURES

Charge Balancing ADC

24 Bits No Missing Codes

0.0015% Nonlinearity

High Level and Low Level Analog Input Channels

Programmable Gain for Both Inputs

Gains from 1 to 128

Differential Input for Low Level Channel

Low-Pass Filter with Programmable Filter Cutoffs

Ability to Read/Write Calibration Coefficients

Bidirectional Microcontroller Serial Interface

Internal/External Reference Option

Single- or Dual-Supply Operation

Low Power (25 mW typ) with Power-Down Mode

(100 W typ)

APPLICATIONS

Process Control

Smart Transmitters

Portable Industrial Instruments

DESCRIPTION

The AD7712 is a complete analog front end for low frequency measurement applications. The device has two analog input channels and accepts either low level signals directly from a trans ducer or high level (±4 VREF) signals, and outputs a serial digital word. It employs a sigma-delta conversion technique to realize up to 24 bits of no missing codes performance. The low level input signal is applied to a proprietary programmable gain front end based around an analog modulator. The high level analog input is attenuated before being applied to the same 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.

Normally, one of the channels will be used as the main channel with the second channel used as an auxiliary input to periodi cally measure a second voltage. The part can be operated from a single supply (by tying the VSS pin to AGND), provided that the input signals on the low level analog input are more positive than –30 mV. By taking the VSS pin negative, the part can con vert signals down to –VREF on this low level input. This low level input, as well as the reference input, features differential input capability.

The AD7712 is ideal for use in smart, microcontroller based systems. Input channel selection, gain settings, and signal polar ity can be configured in software using the bidirectional serial port. The AD7712 also contains self-calibration, system calibra tion, and background calibration options, and allows the user to read and to write the on-chip calibration registers.

CMOS construction ensures low power dissipation, and a hard ware programmable power-down mode reduces the standby power consumption to only 100 µW typical. The part is available in a 24-lead, 0.3 inch wide, plastic and hermetic dual-in-line pack age (DIP), as well as a 24-lead small outline (SOIC) package.

INFORMATION

Drawing

Our advantage :

• High quality products --- our offers are 100% new and original, ROHS
• Competitive price --- good Purchase channels with good price.
• Professional service --- strict quality testing before the shipment, and perfect after-sales service after the purchase.
• Adequate inventory --- With the support of our strong Purchasing team,
• Fast delivery --- we will ship the goods within 1-3 working days after the payment confirmed.

be sure to meet your need for all kinds of components. ^_^


Product List
Supply a Series of Electronic Components, full range of semiconductors, active & passive Components.We can help you to get all for bom of the PCB,IN a word, you can get one-stop solution here,


The offers including:
Integrated Circuit, Memory ICs, Diode, Transistor , Capacitor, Resistor, Varistor, Fuse, Trimmer & Potentiometer, Transformer, Battery, Cable, Relay, Switch, Connector, Terminal Block, Crystal & Oscillator, Inductor, Sensor, Transformer, IGBT Driver, LED,LCD, Convertor, PCB (Printed Circuit Board),PCBA (PCB Assembly)

Strong in Brand:
Microchip, MAX, AD, TI, ATMEL, ST, ON, NS, Intersil, Winbond, Vishay, ISSI, Infineon, NEC, FAIRCHILD, OMRON,YAGEO, TDK, etc

Thank you for your time to know our company and lean our production.

TOP Electronic Industry co., Ltd  was established in 2006. After 10 years effort and development, now we have become one of the leading electronic components distributors in China. We keep very kind relationship with our suppliers and partners, and put our customers in the first place always.

Here we can offer one-stop solution service:  from PCB design, production to PCB assembly, from a series of components offer to the BOM list.

In addition to its component supply service, TOP distributes industry respected communication modules(GPS,GSM/GPRS,3G,LTE 4G modules) and accessories. All the brands are very famous and welcome by the customers all over the world, they are including: Sierra Wireless, SIMCOM, CINTERION, U-BLOX, HUAWEI, ZTE,TELIT, HOLUX etc. competitive price, Adequate  inventory, fast delivery, be praised by all the customers .

As an innovative company, TOP supplies and  markets high-quality wireless communication antennas and RF-cables. to work with modules together. With more than 8 years antenna experience, we win a lot of stable customers from more than 50 countries. In order to save the cost and delivery time, control the quality, supply the competitive price for our customers, we built our own antenna factory in 2012,which is for developing and manufacturing GPS antenna, GSM/GPRS antenna, WIFI antenna, LTE antenna, all kinds of combo antennas etc. Quality, stability,  accessibility are all important to us.

 The third production-line is Supply a Series of Electronic Components, including Integrated Circuits, Transistor, Diode, LED, LCD display, Capacitor, Resistor, Inductor, Relay, Crystal , Terminal block ,pin header etc.

Our Strong in Brand including Microchip, MAX, AD, TI, NXP, ATMEL, ST, ON, NS, Intersil, Winbond, Vishay, ISSI, Infineon, NEC, FAIRCHILD, OMRON,YAGEO, TDK, etc

As a global distributor of electronic components, we stocking the world's widest range products of semiconductor and electronic components. You can get one stop service here include BOM(bill of material)  purchasing, testing, design for your project. Our experienced team is providing the most excellent service to meet your needs and satisfaction.

With rich experience on wireless product and electronic components, we win our customers with good quality and competitive price. We only offer the products 100% original from the factory.

 TOP has never stop going forward, we always want to give our customers best service. in 2013, together with our partners, we built another PCB factory. In this factory, we can make design, supply PCB, make PCB SMT and DIP assembly, offer BOM service. As a professional supplier , We have a strong procurement team and are therefore able to provide customers with competitive prices and good quality. This is our advantage to you.

As they are to you. Just as in our name, TOP strives to be a leading business in the electronic industry. Our high quality products and professional service, are sure to meet your need for all kinds of electronic components.

You are searching for creditable and professional supplier to work with; we are also looking for sincerely and long-term customers. Once we find each other, we could make rapid progress together!