AD9248:  Dual 14-Bit, 20/40/65 MSPS, 3 V Analog-to-Digital Converter

The AD9248 is a dual, 3 V, 14-bit, 20/40/65 MSPS analog to digital converter. It features dual high performance sample-and-hold amplifiers and an integrated voltage reference. The AD9248 uses a ...More

To drive this ADC in DC-coupled applications, we suggest ADA4938-1. To drive this ADC in AC-coupled applications, we suggest AD8351 or AD8376.

Technical Article: Blood Analysis Systems Require Wide Bandwidths and Fast Sample Processing Cycles and Analysis

AD9248:  Dual 14-Bit, 20/40/65 MSPS, 3 V Analog-to-Digital Converter

Product Description

The AD9248 is a dual, 3 V, 14-bit, 20/40/65 MSPS analog to digital converter. It features dual high performance sample-and-hold amplifiers and an integrated voltage reference. The AD9248 uses a multistage differential pipelined architecture with output error correction logic to provide 14-bit accuracy and guarantee no missing codes over the full operating temperature range at up to 65 MSPS data rates.

The wide bandwidth, differential SHA allows for a variety of user-selectable input ranges and offsets including single-ended applications. It is suitable for various applications including multiplexed systems that switch full-scale voltage levels in successive channels and for sampling inputs at frequencies well beyond the Nyquist rate. The AD9248 is suitable for applications in communications, imaging and medical ultrasound.

Dual single-ended independent clock inputs are used to control all internal conversion cycles. A Duty Cycle Stabilizer (DCS) is available on the AD9248-65 and can compensate for wide variations in the clock duty cycle, allowing the converters to maintain excellent performance. The digital output data is presented in either straight binary or twos complement format. Out-of-range signals indicate an overflow condition, which can be used with the most significant bit to determine low or high overflow.

Fabricated on an advanced CMOS process, the AD9248 is available in a space saving 64-pin LQFP and is pin compatible to the AD9238. It is specified over the industrial temperature range (-40°C to +85°C).

Features

  • Integrated Dual 14-Bit Analog-to-Digital Converters
  • Single 3 V Supply Operation (2.7 V to 3.6 V)
  • SNR = 71.6 dBc (to Nyquist, AD9248-65)
  • SFDR = 80 dBc (to Nyquist, AD9248-65)
  • Low Power: 600 mW at 65 MSPS
  • Differential Input with 500 MHz 3 dB Bandwidth
  • Exceptional Cross Talk Immunity > 85 dB
  • On-Chip Reference and SHA
  • Flexible Analog Input: 1 Vp-p to 2 Vp-p Range
  • Offset Binary or Twos Complement Data Format
  • Clock Duty Cycle Stabilizer
  • Pin compatible with AD9238

Diagrams

AD9248 Diagram
Functional Block Diagram for AD9248

Specifications

Resolution (Bits) 14bit
T-Put Rate 65000000SPS
# Chan 2
Supply V Single(+3),Single(+3.3)
Pwr Diss 700mW
Interface Par
Ain Range 1 V p-p,2 V p-p,Uni 1.0V,Uni 2.0V
SNR (dB) 73.7dB
Pkg Type QFP

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

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

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

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

Subscribe to New Products Feed More
Part# Bits Throughput Rate # of Inputs Operating Pwr Diss
AD9251-80 14 80MSPS 2 232mW
AD9248-65 14 65MSPS 2 700mW
AD9640-80 14 80MSPS 2 492mW
AD9244-65 14 65MSPS 1 640mW
AD9254 14 150MSPS 1 470mW
AD9245 14 80MSPS 1 414mW
AD9246-105 14 105MSPS 1 458mW
AD9246-125 14 125MSPS 1 458mW
AD9268-80 16 80MSPS 2 425mW
AD9238-65 12 65MSPS 2 698mW
AD9627-80 12 80MSPS 2 490mW
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.

Production Availability
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.

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.

View Sales and Distribution Offices