ADS4249 Series

Dual-Channel, 14-Bit, 250-MSPS Analog-to-Digital Converter (ADC)

Catalog

Dual-Channel, 14-Bit, 250-MSPS Analog-to-Digital Converter (ADC)

Part	Reference Type	Architecture	Voltage - Supply, Analog [Max]	Voltage - Supply, Analog [Min]	Package / Case	Input Type	Data Interface	Supplier Device Package	Number of Inputs	Configuration	Mounting Type	Number of A/D Converters	Number of Bits	Ratio - S/H:ADC	Voltage - Supply, Digital [Min]	Voltage - Supply, Digital [Max]	Sampling Rate (Per Second)	Operating Temperature [Max]	Operating Temperature [Min]	Features
Texas Instruments ADS4249IRGCR	Internal	Pipelined	1.9 V	1.7 V	64-VFQFN Exposed Pad	Differential	LVDS - Parallel Parallel	64-VQFN (9x9)	2	S/H-ADC	Surface Mount	2	14	1:1	1.7 V	1.9 V	250 M	85 °C	-40 °C	Simultaneous Sampling
Texas Instruments ADS4249IRGCT	Internal	Pipelined	1.9 V	1.7 V	64-VFQFN Exposed Pad	Differential	LVDS - Parallel Parallel	64-VQFN (9x9)	2	S/H-ADC	Surface Mount	2	14	1:1	1.7 V	1.9 V	250 M	85 °C	-40 °C	Simultaneous Sampling

Catalog

Dual-Channel, 14-Bit, 250-MSPS Analog-to-Digital Converter (ADC)

Key Features

• Maximum Sample Rate: 250 MSPSUltra-Low Power with Single 1.8-V Supply:560-mW Total Power at 250 MSPSHigh Dynamic Performance:80-dBc SFDR at 170 MHz71.7-dBFS SNR at 170 MHzCrosstalk: > 90 dB at 185 MHzProgrammable Gain up to 6 dB forSNR/SFDR Trade-offDC Offset CorrectionOutput Interface Options:1.8-V Parallel CMOS InterfaceDouble Data Rate (DDR) LVDS withProgrammable Swing:Standard Swing: 350 mVLow Swing: 200 mVSupports Low Input Clock AmplitudeDown to 200 mVPPPackage: 9-mm × 9-mm, 64-Pin Quad Flat No-Lead (QFN) PackageMaximum Sample Rate: 250 MSPSUltra-Low Power with Single 1.8-V Supply:560-mW Total Power at 250 MSPSHigh Dynamic Performance:80-dBc SFDR at 170 MHz71.7-dBFS SNR at 170 MHzCrosstalk: > 90 dB at 185 MHzProgrammable Gain up to 6 dB forSNR/SFDR Trade-offDC Offset CorrectionOutput Interface Options:1.8-V Parallel CMOS InterfaceDouble Data Rate (DDR) LVDS withProgrammable Swing:Standard Swing: 350 mVLow Swing: 200 mVSupports Low Input Clock AmplitudeDown to 200 mVPPPackage: 9-mm × 9-mm, 64-Pin Quad Flat No-Lead (QFN) Package

Description

The ADS4249 is a member of the ADS42xx ultralow-power family of dual-channel, 12-bit and 14-bit analog-to-digital converters (ADCs). Innovative design techniques are used to achieve high dynamic performance, while consuming extremely low power with a 1.8-V supply. This topology makes the ADS4249 well-suited for multi-carrier, wide-bandwidth communications applications. The ADS4249 has gain options that can be used to improve SFDR performance at lower full-scale input ranges. This device also includes a dc offset correction loop that can be used to cancel the ADC offset. Both DDR LVDS and parallel CMOS digital output interfaces are available in a compact QFN-64 PowerPAD package. The device includes internal references while the traditional reference pins and associated decoupling capacitors have been eliminated. The ADS4249 is specified over the industrial temperature range (–40°C to 85°C). The ADS4249 is a member of the ADS42xx ultralow-power family of dual-channel, 12-bit and 14-bit analog-to-digital converters (ADCs). Innovative design techniques are used to achieve high dynamic performance, while consuming extremely low power with a 1.8-V supply. This topology makes the ADS4249 well-suited for multi-carrier, wide-bandwidth communications applications. The ADS4249 has gain options that can be used to improve SFDR performance at lower full-scale input ranges. This device also includes a dc offset correction loop that can be used to cancel the ADC offset. Both DDR LVDS and parallel CMOS digital output interfaces are available in a compact QFN-64 PowerPAD package. The device includes internal references while the traditional reference pins and associated decoupling capacitors have been eliminated. The ADS4249 is specified over the industrial temperature range (–40°C to 85°C).