ADC34J44 - Quad-Channel, 14-Bit, 125-MSPS Analog-to-Digital Converter (ADC)

The ADC34J4x is a high-linearity, ultra-low power, quad-channel, 14-bit, 50-MSPS to 160-MSPS, analog-to-digital converter (ADC). The devices are designed specifically to support demanding, high input frequency signals with large dynamic range requirements. A clock input divider allows more flexibility for system clock architecture design while the SYSREF input enables complete system synchronization. The ADC34J4x family supports serial current-mode logic (CML) and JESD204B interfaces in order to reduce the number of interface lines, thus allowing high system integration density. The JESD204B interface is a serial interface, where the data of each ADC are serialized and output over only one differential pair. An internal phase-locked loop (PLL) multiplies the incoming ADC sampling clock by 20 to derive the bit clock that is used to serialize the 14-bit data from each channel. The ADC34J4x devices support subclass 1 with interface speeds up to 3.2 Gbps.

• Quad Channel
• 14-Bit Resolution
• Single 1.8-V Supply
• Flexible Input Clock Buffer with Divide-by-1, -2, -4
• SNR = 72 dBFS, SFDR = 86 dBc at
  f_IN = 70 MHz
• Ultra-Low Power Consumption:
  • 203 mW/Ch at 160 MSPS
• Channel Isolation: 105 dB
• Internal Dither
• JESD204B Serial Interface:
  • Supports Subclass 0, 1, 2
  • Supports One Lane per ADC up to 160 MSPS
• Support for Multi-Chip Synchronization
• Pin-to-Pin Compatible with 12-Bit Version
• Package: VQFN-48 (7 mm × 7 mm)