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AD7767:  24-Bit, 15 mW, 109 dB, 128 kSPS/64 kSPS/32 kSPS ADCs

The AD7767/AD7767-1/AD7767-2 are high performance, 24-bit, oversampled SAR analog-to-digital converters (ADCs). The AD7767/AD7767-1/AD7767-2 combine the benefits of a large dynamic range and input bandwidth, consuming 15 mW, 10.5 mW, and 8.5 mW power, respectively, and are contained in a 16-lead TSSOP package.

Ideal for ultralow power data acquisition (such as PCI- and USB-based systems), ...More

AD7767:  24-Bit, 15 mW, 109 dB, 128 kSPS/64 kSPS/32 kSPS ADCs

Product Description

The AD7767/AD7767-1/AD7767-2 are high performance, 24-bit, oversampled SAR analog-to-digital converters (ADCs). The AD7767/AD7767-1/AD7767-2 combine the benefits of a large dynamic range and input bandwidth, consuming 15 mW, 10.5 mW, and 8.5 mW power, respectively, and are contained in a 16-lead TSSOP package.

Ideal for ultralow power data acquisition (such as PCI- and USB-based systems), the AD7767/AD7767-1/AD7767-2 provide 24-bit resolution. The combination of exceptional SNR, wide dynamic range, and outstanding dc accuracy make the AD7767/AD7767-1/AD7767-2 ideally suited for measuring small signal changes over a wide dynamic range. This is particularly suitable for applications where small changes on the input are measured on larger ac or dc signals. In such an application, the AD7767/AD7767-1/AD7767-2 accurately gather both ac and dc information.

The AD7767/AD7767-1/AD7767-2 include an on-board digital filter (complete with linear phase response) that acts to elimi-nate out-of-band noise by filtering the oversampled input voltage. The oversampled architecture also reduces front-end antialias requirements. Other features of the AD7767 include a SYNC/PD (synchronization/power-down) pin, allowing the synchronization of multiple AD7767 devices. The addition of an SDI pin provides the option of daisy chaining multiple AD7767 devices.

The AD7767/AD7767-1/AD7767-2 operate from a 2.5 V supply using a 5 V reference. The devices operate from −40°C to +105°C.

Applications

  • Low power PCI/USB data acquisition systems
  • Low power wireless acquisition systems
  • Vibration analysis
  • Instrumentation
  • High precision medical acquisition

RESOURCES & TOOLS

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EVALUATION BOARDS & DEVELOPMENT KITS

  • Oversampled successive approximation (SAR) architecture
  • High performance ac and dc accuracy, low power
    115.5 dB dynamic range, 32 kSPS (AD7767-2)
    112.5 dB dynamic range, 64 kSPS (AD7767-1)
    109.5 dB dynamic range, 128 kSPS (AD7767)
    −118 dB THD
  • Exceptionally low power
    8.5 mW, 32 kSPS (AD7767-2)
    10.5 mW, 64 kSPS (AD7767-1)
    15 mW, 128 kSPS (AD7767)
  • High dc accuracy
    24 bits, no missing codes (NMC)
    INL: ±3 ppm (typical), ±7.6 ppm (maximum)
  • Low temperature drift
    Zero error drift: 15 nV/°C
    Gain error drift: 0.4 ppm/°C
  • On-chip low-pass FIR filter
    Linear phase response
    Pass-band ripple: ±0.005 dB
    Stop-band attenuation: 100 dB
  • 2.5 V supply with 1.8 V/2.5 V/3 V/3.6 V logic interface options
  • Flexible interfacing options
    Synchronization of multiple devices
    Daisy-chain capability
    Power-down function
  • Temperature range: −40°C to +105°C
  • Resolution (Bits): 24bit
  • T-Put Rate: 128kSPS
  • # Chan: 1
  • Supply V: Single(+2.5)
  • Pwr Diss: 18mW
  • Interface: Ser
  • Ain Range: (2Vref) p-p
  • SNR (dB): 113.5dB
  • Pkg Type: SOP

Functional Block Diagram for AD7767

Similar Products

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Part# Bits Throughput Rate # of Inputs Operating Pwr Diss
AD7766 24 128KSPS 1 18mW
AD7767 24 128KSPS 1 18mW
AD7982 18 1MSPS 1 8.6mW
AD7984 18 1.33MSPS 1 14mW
AD7980 16 1MSPS 1 10mW
AD7687 16 250KSPS 1 12.5mW
AD7694 16 250KSPS 1 6.3mW
AD7983 16 1.33MSPS 1 12mW
AD7942 14 250KSPS 1 12.5mW
AD9874 24 541.5KSPS 1 79.5mW
AD7765 24 156KSPS 1 371mW
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Pricing, Packaging & Availability

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Model
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Status
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  • 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).
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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.

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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.
Sample availability may be better than production availability. Please enter samples into your cart to check sample availability.

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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.

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This is the list of Product Change Notifications (PCN) published on the web for this model. Click on the link to access PCN Information.Only select pre-2009 PCN�s are available on-line. To obtain a pre-2009 PCN, contact your ADI Sales Rep. For more information on ADI's PCN process, please visit our PCN Policy Statement 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.
**Sample availability may be better than production availability. Please enter samples into your cart to check sample availability.