ADS4142 14-bit, 65 MSPS, Analog-to-Digital Converter (ADC) | TI.com

ADS4142 (ACTIVE)

14-bit, 65 MSPS, Analog-to-Digital Converter (ADC)

 

Description

The ADS412x and ADS414x devices are lower-sampling speed variants in the ADS41xx family of analog-to-digital converters (ADCs). These devices use innovative design techniques to achieve high dynamic performance, while consuming extremely low power at 1.8-V supply. The devices are well-suited for multi-carrier, wide bandwidth communications applications.

The ADS412x and ADS414x devices have fine gain options that can be used to improve SFDR performance at lower full-scale input ranges, especially at high input frequencies. They include a dc offset correction loop that can be used to cancel the ADC offset. At lower sampling rates, the ADC automatically operates at scaled down power with no loss in performance.

The ADS412x and ADS414x devices are available in a compact VQFN-48 package and are specified over the industrial temperature range (–40°C to +85°C).

Features

  • Ultra-Low Power With 1.8-V Single Supply:
    • 103-mW Total Power at 65 MSPS
    • 153-mW Total Power at 125 MSPS
  • High Dynamic Performance:
    • SNR: 72.2 dBFS at 170 MHz
    • SFDR: 81 dBc at 170 MHz
  • Dynamic Power Scaling With Sample Rate
  • Idle Channel SNR 74.8 dBFS (ADS414x)
  • Output Interface:
    • Double Data Rate (DDR) LVDS With Programmable Swing and Strength:
      • Standard Swing: 350 mV
      • Low Swing: 200 mV
      • Default Strength: 100-Ω Termination
      • 2x Strength: 50-Ω Termination
    • 1.8-V Parallel CMOS Interface Also Supported
  • Programmable Gain up to 6 dB for SNR, SFDR Trade-Off
  • DC Offset Correction
  • Supports Low Input Clock Amplitude Down to 200 mVPP

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

 
Sample Rate (Max) (MSPS)
Features
Resolution (Bits)
Number of 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
Architecture
DNL (Typ) (+/-LSB)
INL (Typ) (+/-LSB)
Reference mode
ADS4142 ADS4122 ADS4125 ADS4126 ADS4128 ADS4129 ADS4145 ADS4146 ADS4149 ADS41B25 ADS41B29 ADS41B49
65     65     125     160     200     250     125     160     250     125     250     250    
Low Power     Low Power     Low Power     Low Power     Low Power     Low Power     Low Power     Low Power     Low Power     Low Power     High Performance     High Performance    
14     12     12     12     12     12     14     14     14     12     12     14    
1     1     1     1     1     1     1     1     1     1     1     1    
72.3     70.9     70.9     70.5     69     70.4     72.2     73     72.9     68.8     69.2     71.7    
11.7     11.4     11.4     11.33     11.2     11.27     11.5     11.75     11.7     11.1     11.07     11.5    
88     88     88     83     85     80     88     83     80     89     89     89    
95     95     136     200     212     265     136     200     265     310     350     350    
2     2     2     2     2     2     2     2     2     1.5     1.5     1.5    
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    
DDR LVDS
Parallel CMOS    
DDR LVDS
Parallel CMOS    
DDR LVDS
Parallel CMOS    
DDR LVDS
Parallel CMOS    
-40 to 85     -40 to 85