ADS62C17 Datasheet, PDF (1/68 Pages) Texas Instruments – Dual Channel 11 Bit, 200 MSPS ADC With SNRBoost

ADS62C17
www.ti.com ............................................................................................................................................................. SLAS631A – APRIL 2009 – REVISED JULY 2009
Dual Channel 11 Bit, 200 MSPS ADC With SNRBoost
FEATURES
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• Maximum Sample Rate: 200 MSPS
• 11-bit Resolution with No Missing Codes
• 90 dBc SFDR at Fin = 10 MHz
• 79.8 dBFS SNR at 125 MHz IF, 20 MHz BW
using TI proprietary SNRBoost technology
• Total Power 1.1 W at 200 MSPS
• 90 dB Cross-talk
• Double Data Rate (DDR) LVDS and Parallel
CMOS Output Options
• Programmable Gain up to 6dB for SNR/SFDR
Trade-off
• DC Offset Correction
• Gain Tuning Capability in Fine Steps (0.001
dB) Allows Channel-to-channel Gain Matching
• Supports Input Clock Amplitude Down to 400
mV p-p Differential
• Internal and External Reference Support
• 64-QFN Package (9 mm × 9 mm)
DESCRIPTION
ADS62C17 is a dual channel 11-bit, 200 MSPS A/D converter that combines high dynamic performance and low
power consumption in a compact 64 QFN package. This makes it well-suited for multi-carrier, wide band-width
communications applications.
ADS62C17 uses TI-proprietary SNRBoost technology that can be used to overcome SNR limitation due to
quantization noise for bandwidths less than Nyquist (Fs/2). It includes several useful and commonly used digital
functions such as ADC offset correction, gain (0 to 6 dB in steps of 0.5 dB) and gain tuning (in fine steps of 0.001
dB).
The gain option can be used to improve SFDR performance at lower full-scale input ranges. Using the gain
tuning capability, each channel’s gain can be set independently to improve channel-to-channel gain matching.
The device also 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. 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).
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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 © 2009, Texas Instruments Incorporated