Dual 14-Bit, 250 MSPS, Analog-to-Digital Converter - ADS42JB49

ADS42JB49 (ACTIVE)

Dual 14-Bit, 250 MSPS, Analog-to-Digital Converter

Description

The ADS42JB69 and ADS42JB49 are high-linearity, dual-channel, 16- and 14-bit, 250-MSPS, analog-to-digital converters (ADCs). These devices support the JESD204B serial interface with data rates up to
3.125 Gbps. The buffered analog input provides uniform input impedance across a wide frequency range while minimizing sample-and-hold glitch energy making it easy to drive analog inputs up to very high input frequencies. A sampling clock divider allows more flexibility for system clock architecture design. The devices employ internal dither algorithms to provide excellent spurious-free dynamic range (SFDR) over a large input frequency range.

For all available packages, see the orderable addendum at the end of the datasheet.

Features

  • Dual-Channel ADCs
  • 14- and 16-Bit Resolution
  • Maximum Clock Rate: 250 MSPS
  • JESD204B Serial Interface
    • Subclass 0, 1, 2 Compliant
    • Up to 3.125 Gbps
    • Two and Four Lanes Support
  • Analog Input Buffer with High-Impedance Input
  • Flexible Input Clock Buffer:
    Divide-by-1, -2, and -4
  • Differential Full-Scale Input: 2 VPP and 2.5 VPP
    (Register Programmable)
  • Package: 9-mm × 9-mm VQFN-64
  • Power Dissipation: 850 mW/Ch
  • Aperture Jitter: 85 fS rms
  • Internal Dither
  • Channel Isolation: 100 dB
  • Performance:
    • fIN = 170 MHz at 2 VPP, –1 dBFS
      • SNR: 73.3 dBFS
      • SFDR: 93 dBc for HD2, HD3
      • SFDR: 100 dBc for Non HD2, HD3
    • fIN = 170 MHz at 2.5 VPP, –1 dBFS
      • SNR: 74.7 dBFS
      • SFDR: 89 dBc for HD2, HD3 and
        95 dBc for Non HD2, HD3

View more

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

 
Resolution (Bits)
Sample Rate (max) (SPS)
# Input Channels
SNR (dB)
ENOB (Bits)
SFDR (dB)
Power Consumption (Typ) (mW)
Input Range
Interface
Operating Temperature Range (C)
Analog Input BW (MHz)
Input Buffer
Package Group
Estimated Package Size (WxL) (mm2)
Rating
SINAD (dB)
Architecture
DNL (Max) (+/-LSB)
INL (Max) (+/-LSB)
Reference Mode
Power Down
ADS42JB49 ADS42JB46 ADS42JB69 ADS42LB49 ADS42LB69
14     14     16     14     16    
250MSPS     160MSPS     250MSPS     250MSPS     250MSPS    
2     2     2     2     2    
75     75.2     75.9     74.9     75.8    
12.1     12.2     12.3     12     12.2    
95     96     95     90     90    
1700     1360     1700     1640     1640    
2.5V (p-p)     2.5V (p-p)     2.5V (p-p)     2.5V (p-p)     2.5V (p-p)    
JESD204B     JESD204B     JESD204B     Parallel LVDS     Parallel LVDS    
-40 to 85     -40 to 85     -40 to 85     -40 to 85     -40 to 85    
900     900     900     900     900    
         
VQFN     VQFN     VQFN     VQFN     VQFN    
64VQFN: 81 mm2: 9 x 9     64VQFN: 81 mm2: 9 x 9     64VQFN: 81 mm2: 9 x 9     64VQFN: 81 mm2: 9 x 9     64VQFN: 81 mm2: 9 x 9    
Catalog     Catalog     Catalog     Catalog     Catalog    
74.8     75.1     75.7     74.1     75.1    
Pipeline     Pipeline     Pipeline     Pipeline     Pipeline    
0.15     0.4     0.6     0.15     0.6    
0.75     0.75     3     0.75     3    
Int     Int     Int     Int     Int    
         

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