Dual-Channel, 14-Bit, 250-MSPS Analog-to-Digital Converter (ADC) - ADS42LB49

ADS42LB49 (ACTIVE)

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

 

Description

The ADS42LB49 and ADS42LB69 are a family of high-linearity, dual-channel, 14- and 16-bit,
250-MSPS, analog-to-digital converters (ADCs) supporting DDR and QDR LVDS output interfaces. The buffered analog input provides uniform input impedance across a wide frequency range while minimizing sample-and-hold glitch energy. A sampling clock divider allows more flexibility for system clock architecture design. The ADS42LBx9 provides excellent spurious-free dynamic range (SFDR) over a large input frequency range with low-power consumption.

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

Features

  • Dual Channel
  • 14- and 16-Bit Resolution
  • Maximum Clock Rate: 250 MSPS
  • Analog Input Buffer with High Impedance Input
  • Flexible Input Clock Buffer with
    Divide-by-1, -2, and -4
  • 2-VPP and 2.5-VPP Differential Full-Scale Input (SPI-Programmable)
  • DDR or QDR LVDS Interface
  • 64-Pin VQFN Package (9-mm × 9-mm)
  • Power Dissipation: 820 mW/ch
  • Aperture Jitter: 85 fS
  • Internal Dither
  • Channel Isolation: 100 dB
  • Performance at fIN = 170 MHz at 2 VPP, –1 dBFS
    • SNR: 73.2 dBFS
    • SFDR:
      • 87 dBc (HD2 and HD3)
      • 100 dBc (Non HD2 and HD3)
  • Performance at fIN = 170 MHz:
    2.5 VPP, –1 dBFS
    • SNR: 74.9 dBFS
    • SFDR:
      • 85 dBc (HD2 and HD3)
      • 97 dBc (Non HD2 and HD3)

View more

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

 
Resolution (Bits)
Sample Rate (Max) (MSPS)
# 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
Package Size: mm2:W x L (PKG)
Approx. Price (US$)
Rating
SINAD (dB)
Architecture
DNL (Max) (+/-LSB)
INL (Max) (+/-LSB)
Reference Mode
ADS42LB49 ADS42JB46 ADS42JB49 ADS42JB69 ADS42LB69
14    14    14    16    16   
250    160    250    250    250   
2    2    2    2    2   
74.9    75.2    75    75.9    75.8   
12    12.2    12.1    12.3    12.2   
90    96    95    95    90   
1640    1360    1700    1700    1640   
2.5V (p-p)    2.5V (p-p)    2.5V (p-p)    2.5V (p-p)    2.5V (p-p)   
Parallel LVDS    JESD204B    JESD204B    JESD204B    Parallel LVDS   
-40 to 85    -40 to 85    -40 to 85    -40 to 85    -40 to 85   
900    900    900    900    900   
Yes    Yes    Yes    Yes    Yes   
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)   
125.00 | 1ku    71.75 | 1ku    125.00 | 1ku    185.00 | 1ku    185.00 | 1ku   
Catalog    Catalog    Catalog    Catalog    Catalog   
74.1    75.1    74.8    75.7    75.1   
Pipeline    Pipeline    Pipeline    Pipeline    Pipeline   
0.15    0.4    0.15    0.6    0.6   
0.75    0.75    0.75    3    3   
Int    Int    Int    Int    Int   

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