1 Features
• Radiation tolerant (-SEP only):
– Single-event latch-up (SEL) immune up to LET
= 43 MeV-cm2/mg
– Single-event functional interrupt (SEFI)
characterized up to LET = 43 MeV-cm2/mg
– Total ionizing dose (TID): 30 krad(Si)
• Enhanced product (-EP and -SEP):
– Meets ASTM E595 outgassing specification
– Vendor item drawing (VID)
– Temperature range: –55°C to 105°C
– One fabrication, assembly, and test site
– Gold bond wire, NiPdAu lead finish
– Wafer lot traceability
– Extended product life cycle
• Dual channel, 65 MSPS ADC
• 18-bit resolution (no missing codes)
• Noise floor: -160 dBFS/Hz
• Low power 94 mW/ch (at 65MSPS)
• Latency: 1-2 clock cycles
• INL: ±7, DNL: ±0.7 LSB (typical)
• Reference options: external or internal
• On-chip DSP (optional/bypassable)
– 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 (fIN = 5MHz):
– SNR: 83.8dBFS
– SFDR: 89dBc HD2, HD3
– SFDR: 101dBFS Worst spur

2 Applications
• Satellite optical communications payloads
• Satellite imaging payloads
• Satellite communication payloads
• Satellite RADAR and LIDAR payloads

3 Description
The ADC3683-xEP is a low noise, ultra-low power 18-
bit 65MSPS high-speed dual channel ADC. Designed
for lowest noise performance, the device delivers
a noise spectral density of -160dBFS/Hz combined
with linearity and dynamic range. The ADC3683-
xEP offers excellent DC precision together with IF
sampling support. Making the device designed 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 94mW/ch at 65Msps,
and the power consumption scales well with lower
sampling rates
The ADC3683-xEP 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 device
is available in a 40-pin QFN package (5 mm x 5 mm)
and supports the extended temperature range from
-55 to +105⁰C