Ultra-Low-Power ADC
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ADS4122, ADS4125, ADS4142, ADS414...
Description
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ADS4122, ADS4125, ADS4142, ADS4145
SBAS520C – FEBRUARY 2011 – REVISED JUNE 2017
ADS41xx 14-, 12-Bit, 65-, 125-MSPS, Ultra-Low-Power ADC
1 Features
1 Ultra-Low Power With 1.8-V Single Supply: – 103-mW Total Power at 65 MSPS – 153-mW Total Power at 125 MSPS
High Dynamic Performance: – SNR: 72.2 dBFS at 170 MHz – SFDR: 81 dBc at 170 MHz
Dynamic Power Scaling With Sample Rate Idle Channel SNR 74.8 dBFS (ADS414x) Output Interface:
– Double Data Rate (DDR) LVDS With Programmable Swing and Strength: – Standard Swing: 350 mV – Low Swing: 200 mV – Default Strength: 100-Ω Termination – 2x Strength: 50-Ω Termination
– 1.8-V Parallel CMOS Interface Also Supported Programmable Gain up to 6 dB for SNR, SFDR
Trade-Off DC Offset Correction Supports Low Input Clock Amplitude Down to
200 mVPP
2 Applications
Wireless Communications Infrastructure Software-Defined Radios Power Amplifier Linearization Imaging Systems
3 Description
The ADS412x and ADS414x devices are lowersampling speed variants in the ADS41xx family of analog-to-digital converters (ADCs). These devices use innovative design techniques to achieve high dynamic performance, while consuming extremely low power at 1.8-V supply. The devices are wellsuited for multi-carrier, wide bandwidth communications applications.
The ADS412x and ADS414x devices have fine gain options that can be used to improve SFDR performance at lower f...
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