Dual-Channel, 14-Bit, 250-MSPS Analog-to-Digital Converter (ADC) - ADS4249

ADS4249 (ACTIVE)

Dual-Channel, 14-Bit, 250-MSPS Analog-to-Digital Converter (ADC)

 

Description

The ADS4249 is a member of the ADS42xx ultralow-power family of dual-channel, 12-bit and 14-bit analog-to-digital converters (ADCs). Innovative design techniques are used to achieve high dynamic performance, while consuming extremely low power with a 1.8-V supply. This topology makes the ADS4249 well-suited for multi-carrier, wide-bandwidth communications applications.

The ADS4249 has gain options that can be used to improve SFDR performance at lower full-scale input ranges. This device also includes a dc offset correction loop that can be used to cancel the ADC offset. Both DDR LVDS and parallel CMOS digital output interfaces are available in a compact QFN-64 PowerPAD package.

The device includes internal references while the traditional reference pins and associated decoupling capacitors have been eliminated. The ADS4249 is specified over the industrial temperature range (–40°C to 85°C).

Features

  • Maximum Sample Rate: 250 MSPS
  • Ultra-Low Power with Single 1.8-V Supply:
    • 560-mW Total Power at 250 MSPS
  • High Dynamic Performance:
    • 80-dBc SFDR at 170 MHz
    • 71.7-dBFS SNR at 170 MHz
  • Crosstalk: > 90 dB at 185 MHz
  • Programmable Gain up to 6 dB for
    SNR/SFDR Trade-off
  • DC Offset Correction
  • Output Interface Options:
    • 1.8-V Parallel CMOS Interface
    • Double Data Rate (DDR) LVDS with
      Programmable Swing:
      • Standard Swing: 350 mV
      • Low Swing: 200 mV
  • Supports Low Input Clock Amplitude
    Down to 200 mVPP
  • Package: 9-mm × 9-mm, 64-Pin Quad Flat No-
    Lead (QFN) Package

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Parametrics Compare all products in High Speed ADCs (>10MSPS)

 
Resolution (Bits)
Sample Rate (Max) (MSPS)
# Input Channels
SNR (dB)
ENOB (Bits)
SFDR (dB)
Power Consumption (Typ) (mW)
Input Range (Vp-p)
Interface
Operating Temperature Range (C)
Analog Input BW (MHz)
Input Buffer
Package Group
Package Size: mm2:W x L (PKG)
Rating
SINAD (dB)
Architecture
DNL (Typ) (+/-LSB)
INL (Typ) (+/-LSB)
Reference Mode
ADS4249 ADS4222 ADS4225 ADS4226 ADS4229 ADS4242 ADS4245 ADS4246
14    12    12    12    12    14    14    14   
250    65    125    160    250    65    125    160   
2    2    2    2    2    2    2    2   
72.8    70.9    70.8    70.5    70.5    73.6    73.4    72.8   
11.7    11.5    11.5    11.4    11.3    11.9    11.9    11.8   
80    91    89    87    80    92    89    87   
470    183    277    332    470    183    277    332   
2    2    2    2    2    2    2    2   
DDR LVDS
Parallel CMOS   		 DDR LVDS
Parallel CMOS   		 DDR LVDS
Parallel CMOS   		 DDR LVDS
Parallel CMOS   		 DDR LVDS
Parallel CMOS   		 DDR LVDS
Parallel CMOS   		 DDR LVDS
Parallel CMOS   		 DDR LVDS
Parallel CMOS   
-40 to 85    -40 to 85    -40 to 85    -40 to 85    -40 to 85    -40 to 85    -40 to 85    -40 to 85   
600    600    600    600    600    600    600    600   
No    No    No    No    No    No    No    No   
VQFN    VQFN    VQFN    VQFN    VQFN    VQFN    VQFN    VQFN   
64VQFN: 81 mm2: 9 x 9(VQFN)    64VQFN: 81 mm2: 9 x 9(VQFN)    64VQFN: 81 mm2: 9 x 9(VQFN)    64VQFN: 81 mm2: 9 x 9(VQFN)    64VQFN: 81 mm2: 9 x 9(VQFN)    64VQFN: 81 mm2: 9 x 9(VQFN)    64VQFN: 81 mm2: 9 x 9(VQFN)    64VQFN: 81 mm2: 9 x 9(VQFN)   
Catalog    Catalog    Catalog    Catalog    Catalog    Catalog    Catalog    Catalog   
72    70.8    70.7    70.4    70    73.5    73.2    72.6   
Pipeline    Pipeline    Pipeline    Pipeline    Pipeline    Pipeline    Pipeline    Pipeline   
0.5    0.5    0.13    0.5    0.5    0.5    0.5    0.5   
2    2    0.5    2    1.8    2    2    2   
Int    Int    Int    Int    Int    Int    Int    Int   

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