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

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)

Parametrics

Compare all products in High-speed ADCs (>10MSPS) Email Download to Excel
Part number Order 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
ADS42LB49 Order now 250     High Performance     14     2     74.9     11.93     90     1640     2.5     DDR LVDS
QDR LVDS    
-40 to 85     900     Yes     VQFN | 64     64VQFN: 81 mm2: 9 x 9 (VQFN | 64)     Catalog     Pipeline    
ADS42JB46 Samples not available 160     High Performance     14     2     75.2     12     100     1360     2.5     JESD204B     -40 to 85     900     Yes     VQFN | 64     64VQFN: 81 mm2: 9 x 9 (VQFN | 64)     Catalog     Pipeline    
ADS42JB49 Samples not available 250     High Performance     14     2     75     12     95     1700     2.5     JESD204B     -40 to 85     900     Yes     VQFN | 64     64VQFN: 81 mm2: 9 x 9 (VQFN | 64)     Catalog     Pipeline    
ADS42JB69 Samples not available 250     High Performance     16     2     75.9     12.1     95     1700     2.5     JESD204B     -40 to 85     900     Yes     VQFN | 64     64VQFN: 81 mm2: 9 x 9 (VQFN | 64)     Catalog     Pipeline    
ADS42LB69 Samples not available 250     High Performance     16     2     75.8     12.03     90     1640     2.5     DDR LVDS
QDR LVDS    
-40 to 85     900     Yes     VQFN | 64     64VQFN: 81 mm2: 9 x 9 (VQFN | 64)     Catalog     Pipeline