Ultralow-Power ADC. ADS4149 Datasheet

ADS4149 ADC. Datasheet pdf. Equivalent

Part ADS4149
Description Ultralow-Power ADC
Feature www.ti.com ADS4126, ADS4129 ADS4146, ADS4149 SBAS483G – NOVEMBER 2009 – REVISED JANUARY 2011 12-/1.
Manufacture etcTI
Datasheet
Download ADS4149 Datasheet



ADS4149
www.ti.com
ADS4126, ADS4129
ADS4146, ADS4149
SBAS483G – NOVEMBER 2009 – REVISED JANUARY 2011
12-/14-Bit, 160/250MSPS, Ultralow-Power ADC
Check for Samples: ADS4126, ADS4129, ADS4146, ADS4149
FEATURES
1
23 Maximum Sample Rate: 250MSPS
• Ultralow Power with 1.8V Single Supply:
– 201mW Total Power at 160MSPS
– 265mW Total Power at 250MSPS
• High Dynamic Performance:
– SNR: 70.6dBFS at 170MHz
– SFDR: 84dBc 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
– 2x 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
200mVPP
• Package: QFN-48 (7mm × 7mm)
DESCRIPTION
The ADS412x/4x are a family of 12-bit/14-bit
analog-to-digital converters (ADCs) with sampling
rates up to 250MSPS. These devices use innovative
design techniques to achieve high dynamic
performance, while consuming extremely low power
at 1.8V supply. The devices are well-suited for
multi-carrier, wide bandwidth communications
applications.
The ADS412x/4x have fine gain options that can be
used to improve SFDR performance at lower
full-scale input ranges, especially at high input
frequencies. They include a dc offset correction loop
that can be used to cancel the ADC offset. At lower
sampling rates, the ADC automatically operates at
scaled down power with no loss in performance.
The ADS412x/4x are available in a compact QFN-48
package and are specified over the industrial
temperature range (–40°C to +85°C)
FAMILY
ADS412x
12-bit family
ADS414x
14-bit family
9-bit
11-bit
65MSPS
ADS4122
ADS4142
ADS412x/ADS414x Family Comparison
SAMPLING RATE
125MSPS
160MSPS
250MSPS
ADS4125
ADS4126
ADS4129
ADS4145
ADS4146
ADS4149
WITH ANALOG INPUT BUFFERS
200MSPS
250MSPS
ADS41B29
ADS58B18
ADS41B49
ADS58B19
1
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.
2
All other trademarks are the property of their respective owners.
3
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 © 2009–2011, Texas Instruments Incorporated



ADS4149
ADS4126, ADS4129
ADS4146, ADS4149
SBAS483G – NOVEMBER 2009 – REVISED JANUARY 2011
www.ti.com
This integrated circuit can be damaged by ESD. Texas Instruments recommends that all integrated circuits be handled with
appropriate precautions. Failure to observe proper handling and installation procedures can cause damage.
ESD damage can range from subtle performance degradation to complete device failure. Precision integrated circuits may be more
susceptible to damage because very small parametric changes could cause the device not to meet its published specifications.
PRODUCT
ADS4126
PACKAGE-
LEAD
QFN-48
PACKAGE
DESIGNATOR
RGZ
ADS4129
QFN-48
RGZ
ADS4146
QFN-48
RGZ
ADS4149
QFN-48
RGZ
ORDERING INFORMATION(1)
SPECIFIED
TEMPERATURE
RANGE
ECO PLAN(2)
LEAD/BALL
FINISH
–40°C to +85°C
GREEN (RoHS, no
Sb/Br)
Cu/NiPdAu
–40°C to +85°C
GREEN (RoHS, no
Sb/Br)
Cu/NiPdAu
–40°C to +85°C
GREEN (RoHS, no
Sb/Br)
Cu/NiPdAu
–40°C to +85°C
GREEN (RoHS, no
Sb/Br)
Cu/NiPdAu
PACKAGE
MARKING
AZ4126
AZ4129
AZ4146
AZ4149
ORDERING
NUMBER
ADS4126IRGZR
ADS4126IRGZT
ADS4129IRGZR
ADS4129IRGZT
ADS4146IRGZR
ADS4146IRGZT
ADS4149IRGZR
ADS4149IRGZT
TRANSPORT MEDIA,
QUANTITY
Tape and reel, 2500
Tape and reel, 250
Tape and reel, 2500
Tape and reel, 250
Tape and reel, 2500
Tape and reel, 250
Tape and reel, 2500
Tape and reel, 250
(1) For the most current package and ordering information, see the Package Option Addendum at the end of this document, or visit the
device product folder at www.ti.com.
(2) Eco Plan is the planned eco-friendly classification. Green (RoHS, no Sb/Br): TI defines Green to mean Pb-Free (RoHS compatible) and
free of Bromine- (Br) and Antimony- (Sb) based flame retardants. Refer to the Quality and Lead-Free (Pb-Free) Data web site for more
information.
The ADS412x/4x family is pin-compatible with the previous generation ADS6149 family; this architecture enables
easy migration. However, there are some important differences between the generations, summarized in Table 1.
Table 1. MIGRATING FROM THE ADS6149 FAMILY
ADS6149 FAMILY
PINS
Pin 21 is NC (not connected)
Pin 23 is MODE
SUPPLY
AVDD is 3.3V
DRVDD is 1.8V
INPUT COMMON-MODE VOLTAGE
VCM is 1.5V
SERIAL INTERFACE
Protocol: 8-bit register address and 8-bit register data
EXTERNAL REFERENCE MODE
Supported
ADS61B49 FAMILY
PINS
Pin 21 is NC (not connected)
Pin 23 is MODE
SUPPLY
AVDD is 3.3V
DRVDD is 1.8V
INPUT COMMON-MODE VOLTAGE
VCM is 1.5V
SERIAL INTERFACE
Protocol: 8-bit register address and 8-bit register data
EXTERNAL REFERENCE MODE
Supported
ADS4149 FAMILY
Pin 21 is NC (not connected)
Pin 23 is RESERVED in the ADS4149 family. It is reserved as a digital control pin for an (as yet) undefined function in the
next-generation ADC series.
AVDD is 1.8V
No change
VCM is 0.95V
No change in protocol
New serial register map
Not supported
ADS41B29/B49/ADS58B18 FAMILY
Pin 21 is 3.3V AVDD_BUF (supply for the analog input buffers)
Pin 23 is a digital control pin for the RESERVED function.
Pin 23 functions as SNR Boost enable (B18 only).
AVDD is 1.8V, AVDD_BUF is 3.3V
No change
VCM is 1.7V
No change in protocol
New serial register map
Not supported
2 Submit Documentation Feedback
Copyright © 2009–2011, Texas Instruments Incorporated
Product Folder Link(s): ADS4126 ADS4129 ADS4146 ADS4149





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