Dual 14-bit 250MSPS Analog-to-Digital Converter - ADS42LB49

ADS42LB49 (ACTIVE)

Dual 14-bit 250MSPS Analog-to-Digital Converter

Recommended alternative parts

  • ADS4249  - The device has SIMILAR FUNCTIONALITY but is not functionally equivalent to the compared device. 

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) (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)
Approx. Price (US$)
Rating
SINAD (dB)
Architecture
DNL (Max) (+/-LSB)
INL (Max) (+/-LSB)
Reference Mode
Power Down
ADS42LB49 ADS42JB46 ADS42JB49 ADS42JB69 ADS42LB69
14     14     14     16     16    
250MSPS     160MSPS     250MSPS     250MSPS     250MSPS    
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    
         
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    
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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