AD7621:  16-Bit, 2 LSB INL, 3 MSPS PulSAR® ADC

The AD7621 is a 16-bit, 3 MSPS, charge redistribution SAR, fully differential analog-to-digital converter that operates from a single 2.5 V power supply. The part contains a high-speed 16-bit sampling ...More

AD7621:  16-Bit, 2 LSB INL, 3 MSPS PulSAR® ADC

Product Description

The AD7621 is a 16-bit, 3 MSPS, charge redistribution SAR, fully differential analog-to-digital converter that operates from a single 2.5 V power supply. The part contains a high-speed 16-bit sampling ADC, an internal conversion clock, an internal reference buffer, error correction circuits, and both serial and parallel system interface ports.

It features a very high sampling rate mode (Wideband Warp) for undersampling applications and, for asynchronous conversion rate applications, a fast mode (Normal) and, for low power applications, a reduced power mode (Impulse) where the power is scaled with the throughput.

It is available in a 48-lead LQFP or a 48-lead LFCSP with operation specified from –40°C to +85°C.

Features

  • 16 Bits Resolution with No Missing Codes
  • No Pipeline Delay ( SAR architecture )
  • Differential Input Range: ±VREF (VREF up to 2.5V)
  • Throughput:
    3 MSPS (Wideband Warp and Warp Mode)
    2 MSPS (Normal Mode)
    1.25 MSPS (Impulse Mode)
  • INL ±2 LSB Max (±30 ppm of FS)
  • SINAD: 89 dB Typ @ 100 kHz
  • THD: -103 dB Typ @ 100 kHz
  • Parallel (16 or 8 bits bus) and Serial 5 V/3.3 V/2.5 V Interface
  • SPI®/QSPI™/MICROWIRE™/DSP Compatible
  • On-board Low Drift Reference with Buffer and Temperature Sensor
  • Single 2.5 V Supply Operation
  • Power Dissipation: 70 mW Typ @ 3 MSPS With REF

Diagrams

AD7621 Diagram
Functional Block Diagram for AD7621

Specifications

Resolution (Bits) 16bit
T-Put Rate 3MSPS
# Chan 1
Supply V Single(+2.5)
Pwr Diss 86mW
Interface Byte,Par,Ser,SPI
Ain Range (2Vref) p-p
SNR (dB) 90dB
Pkg Type CSP,QFP

AD7781 - 20-Bit, Pin-Programmable, Ultralow Power Sigma-Delta ADC

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

AD7780 - 24-Bit Pin-Programmable Low Power Σ−Δ ADC

AD7357 - Differential Input, Dual, Simultaneous Sampling, 4.25 MSPS, 14-Bit, SAR ADC

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Part# Bits Throughput Rate # of Inputs Operating Pwr Diss
AD7621 16 3MSPS 1 86mW
AD7276 12 3MSPS 1 19.8mW
AD7277 10 3MSPS 1 19.8mW
AD7278 8 3MSPS 1 19.8mW
AD775 8 20MSPS 1 85mW
AD7400 16 10MSPS 1 90mW
AD7400A 16 10MSPS 1 95mW
AD7401 16 20MSPS 1 100mW
AD7401A 16 20MSPS 1 105mW
AD7720 16 12.5MSPS 1 215mW
AD9261 16 160MSPS 1 473mW
Pricing, Packaging & Availability

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Model
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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.

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

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

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