1 Features
• Ultralow Power with Single 1.8V Supply,
CMOS Output:
– 277mW total power at 125MSPS
• High Dynamic Performance:
– 88dBc SFDR at 170MHz
– 71.4dBFS SNR at 170MHz
• Crosstalk: > 90dB at 185MHz
• Programmable Gain up to 6dB for
SNR/SFDR Trade-off
• DC Offset Correction
• Output Interface Options:
– 1.8V parallel CMOS interface
– Double data rate (DDR) LVDS with
programmable swing:
• Standard swing: 350mV
• Low swing: 200mV
• Supports Low Input Clock Amplitude
Down to 200mVPP
• Supports Defense, Aerospace, and Medical
Applications
– Controlled Baseline
– One Assembly and Test Site
– One Fabrication Site
– Available in Military (–55°C to 125°C)
Temperature Range
– Extended Product Life Cycle
– Extended Product-Change Notification
– Product Traceability

2 Applications
• Wireless Communications Infrastructure
• Software Defined Radio
• Power Amplifier Linearization

3 Description
The ADS4245 is a low-speed variant of the
ADS42xx ultralow-power family of dual-channel, 14-
bit analog-to-digital converters (ADCs). Innovative
design techniques are used to achieve highdynamic
performance, while consuming extremely low
power with 1.8V supply. This topology makes the
ADS4245 well-suited for multi-carrier, wide-bandwidth
communications applications.
The ADS4245 has gain options that can be used to
improve SFDR performance at lower full-scale input
ranges. These device includes a dc offset correction
loop that can be used to cancel the ADC offset. Both
DDR (double data rate) LVDS and parallel CMOS
digital output interfaces are available in a compact
VQFN-64 PowerPAD™ package.
The device includes internal references while the
traditional reference pins and associated decoupling
capacitors have been eliminated. The ADS4245 is
specified over the military temperature range (–55°C
to 125°C).