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 (max) 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

AD7356 - Differential Input, Dual, Simultaneous Sampling, 5 MSPS, 12-Bit, SAR ADC

AD7699 - 16-Bit, 8-Channel, 500 kSPS PulSAR ADC

AD7352 - Differential Input, Dual, Simultaneous Sampling, 3 MSPS, 12-Bit, SAR ADC

AD7190 - 4.8 kHz Ultra-Low Noise 24-Bit Sigma-Delta ADC with PGA

Subscribe to New Products Feed More
Part# Res Throughput Rate # of Inputs Operating Pwr Diss
AD9248-65 14 65MSPS 2 700mW
AD9640-80 14 80MSPS 2 492mW
AD9244-65 14 65MSPS 1 640mW
AD9254 14 150MSPS 1 470mW
AD9246-125 14 125MSPS 1 458mW
AD9245 14 80MSPS 1 414mW
AD9246-105 14 105MSPS 1 458mW