ADC3683

• Dual Channel ADC
• 18-bit 10/25/65 MSPS ADC
• Noise Floor: -160 dBFS/Hz
• Low Power and Optimized Power Scaling: 50 mW/ch (10 MSPS) to 94 mW/ch (65 MSPS)
• Latency: 1-2 clock cycles
• 18-bit, no missing codes
• INL/DNL: ±7/ ±0.7 LSB (typ)
• Reference: External or Internal
• Input Bandwidth: 900MHz (3-dB)
• Industrial Temperature Range: -40 to +105°C
• On-chip digital filter (Optional)
  • Decimation by 2, 4, 8, 16, 32
  • 32-bit NCO
• Serial LVDS digital interface (2-, 1- and 1/2-wire)
• Small Footprint: 40-QFN (5x5 mm) Package
• Spectral Performance (f_IN = 5 MHz):
  • SNR: 83.8 dBFS
  • SFDR: 89 dBc HD2, HD3
  • SFDR: 101 dBFS Worst Spur
• Spectral Performance (f_IN = 20MHz):
  • SNR: 82.6 dBFS
  • SFDR: 85 dBc HD2, HD3
  • SFDR: 97 dBFS Worst Spur

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The ADC3681, 82, 83 (ADC368x) is a low noise, ultra-low power 18-bit 65 MSPS high-speed dual channel ADC family. Designed for lowest noise performance, it delivers a noise spectral density of -160 dBFS/Hz combined with excellent linearity and dynamic range. The ADC368x offers excellent DC precision together with IF sampling support which makes it ideally suited for a wide range of applications. High-speed control loops benefit from the short latency as low as only 1 clock cycle. The ADC consumes only 94 mW/ch at 65 Msps and its power consumption scales very well with lower sampling rates.

The ADC368x uses a serial LVDS (SLVDS) interface to output the data which minimizes the number of digital interconnects. The device supports two-lane, one-lane and half-lane options. The ADC36xx is a pin to pin compatible family of ADCs with 16 and 18-bit resolution and different speed grades. It comes in a 40-pin QFN package (5 x 5mm) and supports the extended industrial temperature range from -40 to +105⁰C.