1 Features
• Space screening and radiation performance
– QML-V screening and reliability
– Total ionizing dose (TID): 300 krad (Si)
– Single event latchup (SEL): 75 MeV-cm2/mg
• Ambient temperature range: −55°C to 105°C
• Dual channel ADC
• 18-bit 65MSPS
• Noise Floor: -160dBFS/Hz
• Low power and optimized power scaling:
50mW/ch (10MSPS) to 94mW/ch (65MSPS)
• Latency: 1-2 clock cycles
• 18-bit, no missing codes
• INL: ±9, DNL: ±0.7 LSB (typical)
• Reference: external or internal
• Input bandwidth: 140MHz (–3dB)
• 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)
• Spectral performance (fIN = 5MHz):
– SNR: 83.5dBFS
– SFDR: 87dBc HD2, HD3
– SFDR: 99dBFS worst spur

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

3 Description
The ADC3683-SP 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
excellent linearity and dynamic range. The ADC3683-
SP offers DC precision together with IF sampling
support making it 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 device 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 pin-topin
compatible with the 14-bit, 125MSPS ADC3664-
SP. The device comes in a 64-pin CFP package
(10.9mm x 10.9mm), and supports a temperature
range from −55°C to +105°C.