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AD7822BN

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3 V/5 V, 2 MSPS, 8-Bit, 1-, 4-, 8-Channel Sampling ADCs

  • Package/Case :
  • PDIP-20
  • Product Categories :
  • Analog / Digital & Digital / Analog Converter
  • RoHs Status:
  • Lead free / RoHS Compliant
  • In-stock:
  • 5621

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AD7822BN Product Details

The AD7822/AD7825/AD7829 are high speed, 1-, 4-, and 8-channel, microprocessor-compatible, 8-bit analog-to-digital converters with a maximum throughput of 2 MSPS. The AD7822/ AD7825/AD7829 contain an on-chip reference of 2.5 V (2% tolerance); a track-and-hold amplifier; a 420 ns, 8-bit half-flash ADC; and a high speed parallel interface. The converters can operate from a single 3 V ± 10% and 5 V ± 10% supply.

The AD7822/AD7825/AD7829 combine the convert start and power-down functions at one pin, that is, the CONVST pin. This allows a unique automatic power-down at the end of a conversion to be implemented. The logic level on the CONVST pin is sampled after the end of a conversion when an EOC (end of conversion) signal goes high. If it is logic low at that point, the ADC is powered down. The AD7822BN and AD7825 also have a separate power-down pin (see the Operating Modes section).

The parallel interface is designed to allow easy interfacing to microprocessors and DSPs. Using only address decoding logic, the parts are easily mapped into the microprocessor address space. The EOC pulse allows the ADCs to be used in a stand-alone manner (see the Parallel Interface section.)

The AD7822BN and AD7825 are available in 20-lead and 24-lead, 0.3" wide, plastic dual in-line packages (PDIP); 20-lead and 24-lead standard small outline packages (SOIC); and 20-lead and 24-lead thin shrink small outline packages (TSSOP). The AD7829 is available in a 28-lead, 0.6" wide PDIP; a 28-lead SOIC; and a 28-lead TSSOP.

Product Highlights

  • Fast Conversion Time. The AD7822/AD7825/AD7829 have a conversion time of 420 ns. Faster conversion times maximize the DSP processing time in a real-time system.
  • Analog Input Span Adjustment. The VMID pin allows the user to offset the input span. This feature can reduce the requirements of single-supply op amps and take into account any system offsets.
  • FPBW (Full Power Bandwidth) of Track-and-Hold. The track-and-hold amplifier has an excellent high frequency performance. The AD7822/AD7825/AD7829 are capable of converting full-scale input signals up to a frequency of 10 MHz. This makes the parts ideally suited to subsampling applications.
  • Channel Selection. Channel selection is made without the necessity of writing to the part.
  • Applications
    • Data acquisition systems, DSP front ends
    • Disk drives
    • Mobile communication systems, subsampling applications

    Feature

    • 8-bit half-flash ADC with 420 ns conversion time
    • 1, 4 and 8 Single-Ended Analog Input Channels Available with Input Offset Adjust
    • On-Chip Track-and-Hold
    • SNR Performance Given for Input Frequencies Up to 10 MHz
    • Automatic Power-Down at the End of Conversion
    • On-Chip Reference (2.5 V)
    • Wide Operating Supply Range3 V ± 10% and 5 V ± 10%
    • Input Ranges:0 V to 2 V p-p, VDD = 3 V ± 10%0 V to 2.5 V p-p, VDD = 5 V ± 10%
    • Flexible Parallel Interface with EOC Pulse to Allow Stand-Alone Operation

    Applications

    • Data acquisition systems, DSP front ends
    • Disk drives
    • Mobile communication systems, subsampling applications

    AD7822BN Pinout
    (Picture: Pinout)

    AD7822BN Block Diagram
    (Picture: Diagram)

    Technical Parameters

    • Channels
    • 1
    • Resolutionbits
    • 8
    • Sample Ratemax | SPS
    • 2M
    • ADC SNR in dBFStyp | dBFS
    • -
    • INL in LSBtyp | LSBs
    • -
    • Device Architecture
    • Pipeline
    • Input Type
    • Single-Ended
    • Data Output Interface
    • Parallel
    • Powertyp | W
    • 60m

    AD7822BN Documents

    • AD7822 Technical Documentation/Data sheet

    AD7822BN Related Products

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    Estimated Delivery Time: Oct 31 - Nov 05 days (choose Expedited at checkout).

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    • 90 days quality guarantee for all products.

      90 days quality guarantee for all products.

    Packing

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      Step6: Bar-Code Shipping Tag

    All the products will packing in anti-staticbag. Ship with ESD antistatic protection.

    Outside ESD packing’s lable will use ourcompany’s information: Part Mumber, Brand and Quantity.

    We will inspect all the goods before shipment,ensure all the products at good condition and ensure the parts are new originalmatch datasheet.

    After all the goods are ensure no problems afterpacking, we will packing safely and send by global express. It exhibitsexcellent puncture and tear resistance along with good seal integrity.

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    Guarantees

    1.We provide 90 days warranty.

    2.If some of the items you received aren't of perfect quality, we would resiponsibly arrange your refund or replacement. But the items must remain their orginal condition.

    FAQ:

    Q: How does Jotrin guarantee that AD7822BN is the original manufacturer or agent of AD?
    We have a professional business development department to strictly test and verify the qualifications of AD original manufacturers and agents. All AD suppliers must pass the qualification review before they can publish their AD7822BN devices; we pay more attention to the channels and quality of AD7822BN products than any other customer. We strictly implement supplier audits, so you can purchase with confidence.
    Q: How to find the detailed information of AD7822BN chips? Including AD original factory information, Analog / Digital & Digital / Analog Converter application, AD7822BN pictures?
    You can use Jotrin's intelligent search engine, or filter by Precision A/D Converters ; Single Channel A/D Converters category, or find it through Analog Devices, Inc Information page.
    Q: Are the AD's AD7822BN price and stock displayed on the platform accurate?
    The AD's inventory fluctuates greatly and cannot be updated in time, it will be updated periodically within 24 hours. After submitting an order for AD7822BN, it is recommended to confirm the order with Jotrin salesperson or online customer service before payment.
    Q: Can I place an order offline?
    Yes. We accept offline orders.
    We can provide order placement service. You only need to log in, click "My Orders" to enter the transaction management, and you will see the "Order Details" interface. After checking it, select all and click "Place Order". In addition, you can enjoy coupons or other selected gifts when placing orders online.
    Q: What forms of payment can I use in Jotrin?
    TT Bank, Paypal, Credit Card, Western Union, and Escrow is all acceptable.
    Q: How is the shipping arranged and track my package?
    Customers can choose industry-leading freight companies, including DHL, FedEx, UPS, TNT, and Registered Mail.
    Once your order has been processed for shipment, our sales will send you an e-mail advising you of the shipping status and tracking number.
    Note: It may take up to 24 hours before carriers will display tracking information. In normal conditions, Express delivery needs 3-5 days, Registered Mail needs 25-60 days.
    Q: What is the process for returns or replacement of AD7822BN?
    All goods will implement Pre-Shipment Inspection (PSI), selected at random from all batches of your order to do a systematic inspection before arranging the shipment. If there is something wrong with the AD7822BN we delivered, we will accept the replacement or return of the AD7822BN only when all of the below conditions are fulfilled:
    (1)Such as a deficiency in quantity, delivery of wrong items, and apparent external defects (breakage and rust, etc.), and we acknowledge such problems.
    (2)We are informed of the defect described above within 90 days after the delivery of AD7822BN.
    (3)The AD7822BN is unused and only in the original unpacked packaging.
    Two processes to return the products:
    (1)Inform us within 90 days
    (2)Obtain Requesting Return Authorizations
    More details about return electronic components please see our Return & Change Policy.
    Q: How to contact us and get support, such as AD7822BN datasheet pdf, AD7822 pin diagram?
    Need any After-Sales service, please feel free contact us: sales@jotrin.com

    Analog Devices, Inc

    AD
    Analog Devices, Inc. was founded by two MIT graduates, Ray Stata and Matthew Lorber in 1965. The same year, the company released its first product, the model 101 op amp, which was a hockey-puck sized module used in test and measurement equipment. In 1967, the company published the first issue of its...
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