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