ADS6149_1 Datasheet, PDF (1/69 Pages) Texas Instruments – 14/12-Bit, 250/210 MSPS ADCs With DDR LVDS and Parallel CMOS Outputs

ADS6149/ADS6129
ADS6148/ADS6128
www.ti.com ..................................................................................................................................................... SLWS211B – JULY 2008 – REVISED OCTOBER 2008
14/12-Bit, 250/210 MSPS ADCs With DDR LVDS and Parallel CMOS Outputs
FEATURES
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• Maximum Sample Rate: 250 MSPS
• 14-Bit Resolution – ADS614X
• 12-Bit Resolution – ADS612X
• 687 mW Total Power Dissipation at 250 MSPS
• Double Data Rate (DDR) LVDS and Parallel
CMOS Output Options
• Programmable Fine Gain up to 6dB for
SNR/SFDR Trade-Off
• DC Offset Correction
• Supports Input Clock Amplitude Down to 400
mV_PP Differential
• Internal and External Reference Support
• 48-QFN Package (7mm × 7mm)
• Pin Compatible with ADS5547 Family
APPLICATIONS
• Multicarrier, Wide Band-Width
Communications
• Wireless Multi-carrier Communications
Infrastructure
• Software Defined Radio
• Power Amplifier Linearization
• 802.16d/e
• Test and Measurement Instrumentation
• High Definition Video
• Medical Imaging
• Radar Systems
DESCRIPTION
ADS614X (ADS612X) is a family of 14-bit (12-bit) A/D
converters with sampling rates up to 250 MSPS. It
combines high dynamic performance and low power
consumption in a compact 48 QFN package. This
makes it well-suited for multicarrier, wide band-width
communications applications.
ADS614X/2X has fine gain options that can be used
to improve SFDR performance at lower full-scale
input ranges. It includes a dc offset correction loop
that can be used to cancel the ADC offset. Both DDR
LVDS (Double Data Rate) and parallel CMOS digital
output interfaces are available. At lower sampling
rates, the ADC automatically operates at scaled down
power with no loss in performance.
It includes internal references while the traditional
reference pins and associated decoupling capacitors
have been eliminated. Nevertheless, the device can
also be driven with an external reference. The device
is specified over the industrial temperature range
(–40°C to 85°C).
ADS614X
14-Bit Family
ADS612X
12-Bit Family
250 MSPS
ADS6149
ADS6129
210 MSPS
ADS6148
ADS6128
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Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2008, Texas Instruments Incorporated