AD7720:  CMOS Sigma-Delta Modulator with 90 dB Dynamic Range

This device is a 7th order sigma-delta modulator that converts the analog input signal into a high speed 1-bit data stream. The part operates from a +5 V supply and accepts a differential input range ...More

AD7720:  CMOS Sigma-Delta Modulator with 90 dB Dynamic Range

Product Description

This device is a 7th order sigma-delta modulator that converts the analog input signal into a high speed 1-bit data stream. The part operates from a +5 V supply and accepts a differential input range of 0 V to +2.5 V or ±1.25 V centered about a common-mode bias. The analog input is continuously sampled by the analog modulator, eliminating the need for external sample and hold circuitry. The input information is contained in the output stream as a density of ones. The original information can be reconstructed with an appropriate digital filter.

Features

  • 12.5 MHz Master Clock Frequency
  • 0 V to +2.5 V or ±1.25 V Input Range
  • Single Bit Output Stream
  • 90 dB Dynamic Range
  • Power Supplies: AVDD, DVDD: +5 V ± 5%
  • On-Chip 2.5 V Voltage Reference
  • 28-Lead TSSOP

Diagrams

AD7720 Diagram
Functional Block Diagram for AD7720

Specifications

Resolution (Bits) 16bit
T-Put Rate 12.5MSPS
# Chan 1
Supply V Single(+5)
Pwr Diss (max) 215mW
Interface Ser
Ain Range (Vref) p-p,2.5V p-p,Uni (Vref),Uni 2.5V
SNR (dB) n/a
Pkg Type SOP

AD7262 - True Differential, Dual, 1 MSPS, 14-Bit/12-Bit, 2-Channel SAR ADC With PGA

AD7949 - 14-Bit, 8-Channel, 250 kSPS PulSAR® ADC

AD7401A - Isolated Sigma-Delta Modulator

EVAL-CED - Converter Evaluation and Development (CED) Board

Subscribe to New Products Feed More
Part# Res Throughput Rate # of Inputs Operating Pwr Diss
AD7401 16 20MSPS 1 100mW
AD7720 16 12.5MSPS 1 215mW
AD9235-20 12 20MSPS 1 110mW
AD9237-20 12 20MSPS 1 120mW
AD9203 10 40MSPS 1 108mW
AD9200 10 20MSPS 1 100mW
AD9215-65 10 65MSPS 1 114mW
AD876 10 20MSPS 1 190mW
AD9215-105 10 105MSPS 1 145mW
AD775 8 20MSPS 1 85mW
AD9280 8 32MSPS 1 110mW
Pricing, Packaging & Availability

Help

Model
The model number is a specific version of a generic that can be purchased or sampled.

Status
Status indicates the current lifecycle of the product. This can be one of 4 stages:
  • Pre-Release: The model has not been released to general production, but samples may be available.
  • Production: The model is currently being produced, and generally available for purchase and sampling.
  • Last Time Buy: The model has been scheduled for obsolescence, but may still be purchased for a limited time.
  • Obsolete: The specific part is obsolete and no longer available. Other models listed in the table may still be available (if they have a status that is not obsolete).
Package Description
The package for this IC (i.e. DIP, SOIC, BGA). An Evaluation Board is a board engineered to show the performance of the model, the part is included on the board.

For detailed drawings and chemical composition please consult our  Package Site

Pin Count
Pin Count is the number of pins, balls, or pads on the device. Pin-out diagrams & pin function descriptions may be found in the datasheet.

Temperature Range
This is the acceptable operating range of the device. The various ranges specified are as follows:
  • Commercial: 0 to +70 degrees Celsius
  • Military : -55 to +125 degrees Celsius
  • Industrial: Temperature ranges may vary by model. Please consult the datasheet for more information.
  • Automotive: -40 to +125 degrees Celsius
Price
The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.

Available Ship Date
This is the date Analog Devices, Inc. anticipates that the product will ship from the warehouse. Most orders ship within 48 hours of this date.Once an order has been placed, Analog Devices, Inc. will send an Order Acknowledgement email to confirm your delivery date. It is important to note the scheduled dock date on the order entry screen. We do take orders for items that are not in stock, so delivery may be scheduled at a future date. Also, please note the warehouse location for the product ordered. We have warehouses in the United States, Europe and Southeast Asia. Transit times from these sites may vary.

RoHS Compliant
Due to environmental concerns, ADI offers many of our products in lead-free versions. For more information about lead-free parts, please consult our Pb (Lead) free information page.

The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.

View Sales and Distribution Offices