ADS4229
www.ti.com
SBAS550B –JUNE 2011–REVISED AUGUST 2012
Dual-Channel, 12-Bit, 250-MSPS Ultralow-Power ADC
Check for Samples: ADS4229
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FEATURES
APPLICATIONS
23
•
Maximum Sample Rate: 250 MSPS
•
•
•
Wireless Communications Infrastructure
Software Defined Radio
•
Ultralow Power with Single 1.8-V Supply:
–
545-mW Total Power at 250 MSPS
Power Amplifier Linearization
•
High Dynamic Performance:
DESCRIPTION
–
–
80.8-dBc SFDR at 170 MHz
69.4-dBFS SNR at 170 MHz
The ADS4229 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
ADS4229 well-suited for multi-carrier, wide-bandwidth
communications applications.
•
•
Crosstalk: > 90 dB at 185 MHz
Programmable Gain Up to 6 dB for
SNR and SFDR Trade-off
•
•
DC Offset Correction
Output Interface Options:
–
–
1.8-V Parallel CMOS Interface
The ADS4229 has gain options that can be used to
improve spurious-free dynamic range (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 double
data rate (DDR) low-voltage differential signaling
(LVDS) and parallel complementary metal oxide
semiconductor (CMOS) digital output interfaces are
DDR LVDS with Programmable Swing:
–
–
Standard Swing: 350 mV
Low Swing: 200 mV
•
•
Supports Low Input Clock Amplitude
Down to 200 mVPP
Package: 9-mm × 9-mm, 64-Pin Quad Flat
No-Lead (QFN) Package
available in
package.
a
compact QFN-64 PowerPAD™
The device includes internal references while the
traditional reference pins and associated decoupling
capacitors have been eliminated. The ADS4229 is
specified over the industrial temperature range
(–40°C to +85°C).
ADS424x/2x Family Comparison(1)
65 MSPS
125 MSPS
160 MSPS
250 MSPS
ADS422x
12-bit family
ADS4222
ADS4225
ADS4226
ADS4229
ADS424x
14-bit family
ADS4242
ADS4245
ADS4246
ADS4249
(1) See Table 1 for details on migrating from the ADS62P49 family.
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Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PowerPAD is a trademark of Texas Instruments Incorporated.
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All other trademarks are the property of their respective owners.
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 © 2011–2012, Texas Instruments Incorporated