AD9267
warning : NOT RECOMMENDED FOR NEW DESIGNS
searchIcon
cartIcon

AD9267

10 MHz Bandwidth, 640 MSPS Dual Continuous Time Sigma-Delta Modulator

Show More showmore-icon

warning : NOT RECOMMENDED FOR NEW DESIGNS tooltip
warning : NOT RECOMMENDED FOR NEW DESIGNS tooltip
Part Details
Part Models 2
1ku List Price Starting From $44.96
Features
  • SNR: 83 dB (85 dBFS) to 10 MHz input
  • SFDR: −88 dBc to 10 MHz input
  • Noise figure: 15 dB
  • Input impedance: 1 kΩ
  • Power: 416 mW
  • 10 MHz real or 20 MHz complex bandwidth
  • 1.8 V analog supply operation
  • Please see data sheet for additional features
Additional Details
show more Icon
The AD9267 is a dual continuous time (CT) sigma-delta (Σ-Δ) modulator with -88 dBc of dynamic range over 10 MHz real or 20 MHz complex bandwidth. The combination of high dynamic range, wide bandwidth, and characteristics unique to the continuous time Σ-Δ modulator architecture makes the AD9267 an ideal solution for wireless communication systems.

The AD9267 has a resistive input impedance that significantly relaxes the requirements of the driver amplifier. In addition, a 32× oversampled fifth-order continuous time loop filter attenuates out-of-band signals and aliases, reducing the need for external filters at the input. The low noise figure of 15 dB relaxes the linearity requirements of the front-end signal chain components, and the high dynamic range reduces the need for an automatic gain control (AGC) loop.

A differential input clock controls all internal conversion cycles. An external clock input or the integrated integer-N PLL provides the 640 MHz internal clock needed for the oversampled conti- nuous time Σ-Δ modulator. The digital output data is presented as 4-bit, LVDS at 640 MSPS in twos complement format. A data clock output (DCO) is provided to ensure proper latch timing with receiving logic. Additional digital signal processing may be required on the 4-bit modulator output to remove the out-of-band noise and to reduce the sample rate.

The AD9267 operates on a 1.8 V power supply, consuming 416 mW. The AD9267 is available in a 64-lead LFCSP and is specified over the industrial temperature range (−40°C to +85°C).

Product Highlights

  1. Continuous time Σ-Δ architecture efficiently achieves high dynamic range and wide bandwidth.
  2. Passive input structure reduces or eliminates the require- ments for a driver amplifier.
  3. An oversampling ratio of 32× and high order loop filter provide excellent alias rejection, reducing or eliminating the need for antialiasing filters.
  4. Operates from a single 1.8 V power supply.
  5. A standard serial port interface (SPI) supports various product features and functions.
  6. Features a low pin count, high speed LVDS interface with data output clock.

Applications

  • Baseband quadrature receivers: CDMA2000, W-CDMA, multicarrier GSM/EDGE, 802.16x, and LTE
  • Quadrature sampling instrumentation
Part Models 2
1ku List Price Starting From $44.96

close icon
Documentation

Documentation

Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
AD9267BCPZ
  • HTML
  • HTML
AD9267BCPZRL7
  • HTML
  • HTML

Filter by Model

reset

Reset Filters

Filter by Model

reset

Reset Filters

Evaluation Kit

Evaluation Kits 1

EVAL-AD9267

AD9267 Evaluation Board

zoom

EVAL-AD9267

AD9267 Evaluation Board

AD9267 Evaluation Board

Product Detail

The AD9267 evaluation board serves two purposes: as an evaluation platform for the 16-bit, dual, continuous time sigmadelta (Σ-Δ) modulator and as a direct conversion demonstration platform. 


The AD9267 is a dual continuous time Σ-Δ modulator with −88 dBc of dynamic range over 10 MHz real or 20 MHz complex bandwidth. The combination of high dynamic range, wide bandwidth, and characteristics unique to the continuous time Σ-Δ modulator architecture makes the AD9267 an ideal solution for wireless communication systems.

Recently Viewed