Texas Instruments ADS4122 / ADS4145 Ultralow-Power ADCs

TI ADS4122 / ADS4142 / ADS4145
Ultralow-Power ADCs

Texas Instruments ADS4122, ADS4142, and ADS4145 Ultralow-Power Analog-to-Digital Converters (ADCs) are lower sampling speed variants of the ADS41xx family of ADCs. TI ADS4122 ADCs are 65MSPS 12-bit devices while ADS4142 ADCs are 65MSPS 14-bit devices. The ADS4145 is a 125MSPS 14-bit ADC. These TI ultralow-power data converters use innovative design techniques to achieve high dynamic performance, while consuming extremely low power at 1.8V supply. ADS4122, ADS4142, and ADS4145 ADCs are ideal for use in multi-carrier, wide bandwidth communications applications.

Features

Ultralow Power with 1.8V Single Supply:

103mW Total Power at 65MSPS
153mW Total Power at 125MSPS

High Dynamic Performance:

SNR: 72.2dBFS at 170MHz
SFDR: 81dBc at 170MHz

Dynamic Power Scaling with Sample Rate
Output Interface:

Double Data Rate (DDR) LVDS with Programmable Swing and Strength

Standard Swing: 350mV
Low Swing: 200mV
Default Strength: 100Ω Termination
2× Strength: 50Ω Termination

1.8V Parallel CMOS Interface Also Supported

Programmable Gain up to 6dB for SNR/SFDR Trade-Off
DC Offset Correction
Supports Low Input Clock Amplitude Down To 200mV_PP
Package: QFN-48 (7mm × 7mm)

Applications

Multi-Carrier, Wide Bandwidth Communications

Part Numbers	Resolution (Bits)	Sample Rate (max)	SNR (dB)	SFDR (dB)	Power Consumption (Typ) (mW)
ADS4122IRGZT	12	65MSPS	70.9	88	95
ADS4142IRGZT	14	65MSPS	72.3	88	95
ADS4145IRGZ25	14	125MSPS	72.2	88	136