ADS54J42 Dual-Channel, 14-Bit, 625-MSPS Analog-to-Digital Converter (ADC) | TI.com

ADS54J42 (ACTIVE) Dual-Channel, 14-Bit, 625-MSPS Analog-to-Digital Converter (ADC)

 

Description

The ADS54J42 is a low-power, wide-bandwidth, 14-bit, 625-MSPS, dual-channel, analog-to-digital converter (ADC). Designed for high signal-to-noise ratio (SNR), the device delivers a noise floor of –157 dBFS/Hz for applications aiming for highest dynamic range over a wide instantaneous bandwidth. The device supports the JESD204B serial interface with data rates up to 6.25 Gbps. The buffered analog input provides uniform input impedance across a wide frequency range and minimizes sample-and-hold glitch energy. Each ADC channel optionally can be connected to a wideband digital down-converter (DDC) block. The ADS54J42 provides excellent spurious-free dynamic range (SFDR) over a large input frequency range with very low power consumption.

The JESD204B interface reduces the number of interface lines, allowing high system integration density. An internal phase-locked loop (PLL) multiplies the ADC sampling clock to derive the bit clock that is used to serialize the 14-bit data from each channel.

Features

  • 14-Bit Resolution, Dual-Chanel, 625-MSPS ADC
  • Noise Floor: –157 dBFS/Hz
  • Spectral Performance (fIN = 170 MHz at –1 dBFS):
    • SNR: 71.0 dBFS
    • NSD: –155.9 dBFS/Hz
    • SFDR: 85 dBc
    • SFDR: 93 dBc (Except HD2, HD3, and Interleaving Tones)
  • Spectral Performance (fIN = 350 MHz at –1 dBFS):
    • SNR: 69 dBFS
    • NSD: –153.9 dBFS/Hz
    • SFDR: 76 dBc
    • SFDR: 90 dBc (Except HD2, HD3, and Interleaving Tones)
  • Channel Isolation: 100 dBc at fIN = 170 MHz
  • Input Full-Scale: 1.9 VPP
  • Input Bandwidth (3 dB): 1.2 GHz
  • On-Chip Dither
  • Integrated Wideband DDC Block
  • JESD204B Interface with Subclass 1 Support:
    • 2 Lanes per ADC at 6.25 Gbps
    • 4 Lanes per ADC at 3.125 Gbps
    • Support for Multi-Chip Synchronization
  • Power Dissipation: 970 mW/Ch at 625 MSPS
  • Package: 72-Pin VQFNP (10 mm × 10 mm)

Parametrics

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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
ADS54J42 Order now 625     High Performance     14     2     71.8     11.6     93     1940     1.9     JESD204B     -40 to 85     1200     Yes     VQFN | 72     72VQFN: 100 mm2: 10 x 10 (VQFN | 72)     Catalog     Pipeline    
ADS54J20 Samples not available 1000     Ultra High Speed     12     2     68.4     11.1     89     2700     1.9     JESD204B     -40 to 85     1200     Yes     VQFN | 72     72VQFN: 100 mm2: 10 x 10 (VQFN | 72)     Catalog     Pipeline    
ADS54J40 Samples not available 1000     Ultra High Speed     14     2     69.7     11.3     89     2700     1.9     JESD204B     -40 to 85     1200     Yes     VQFN | 72     72VQFN: 100 mm2: 10 x 10 (VQFN | 72)     Catalog     Pipeline    
ADS54J60 Samples not available 1000     Ultra High Speed     16     2     70.9     11.5     90     2700     1.9     JESD204B     -40 to 85     1200     Yes     VQFN | 72     72VQFN: 100 mm2: 10 x 10 (VQFN | 72)     Catalog     Pipeline    
ADS54J64 Samples not available 1000
500    
High Performance     14     4     69     11.6     86     2500     1.1     JESD204B     -40 to 85     1000     Yes     VQFN | 72     72VQFN: 100 mm2: 10 x 10 (VQFN | 72)     Catalog     Pipeline