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ADS4122IRGZT Datasheet(PDF) 1 Page - Texas Instruments

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No. de pieza ADS4122IRGZT
Descripción Electrónicos  Ultra Low-Power ADC
Download  74 Pages
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Fabricante Electrónico  TI1 [Texas Instruments]
Página de inicio  http://www.ti.com
Logo TI1 - Texas Instruments

ADS4122IRGZT Datasheet(HTML) 1 Page - Texas Instruments

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12-bit ADC
Reference
Sampling
Circuit
CLK
Gen
ADS4122
LVDS
VCM
INP
INM
CLKP
CLKM
D0_D1P
D0_D1M
D10_D11P
D10_D11M
CLKOUTP
CLKOUTM
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Folder
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Community
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.
ADS4122, ADS4125, ADS4142, ADS4145
SBAS520B – FEBRUARY 2011 – REVISED JANUARY 2016
ADS41xx 14-/12-Bit, 65-/125-MSPS, Ultra Low-Power ADC
1
1 Features
1
Ultralow Power with 1.8-V Single Supply:
103-mW Total Power at 65MSPS
153-mW Total Power at 125 MSPS
High Dynamic Performance:
SNR: 72.2 dBFS at 170 MHz
SFDR: 81 dBc at 170 MHz
Dynamic Power Scaling with Sample Rate
Output Interface:
Double Data Rate (DDR) LVDS with
Programmable Swing and Strength
Standard Swing: 350 mV
Low Swing: 200 mV
Default Strength: 100-
Ω Termination
2x Strength: 50-
Ω Termination
1.8-V Parallel CMOS Interface Also Supported
Programmable Gain up to 6 dB for SNR/SFDR
Trade-Off
DC Offset Correction
Supports Low Input Clock Amplitude Down to 200
mVPP
2 Applications
Wireless Communications Infrastructure
Software-Defined Radio
Power Amplifier Linearization
3 Description
The ADS412x and ADS414x are lower-sampling
speed variants in the ADS41xx family of analog-to-
digital
converters
(ADCs).
These
devices
use
innovative design techniques to achieve high dynamic
performance, while consuming extremely low power
at 1.8-V 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 VQFN-
48 package and are specified over the industrial
temperature range (–40°C to +85°C).
Device Information(1)
PART NUMBER
PACKAGE
BODY SIZE (NOM)
ADS4122
VQFN (48)
7.00 mm x 7.00 mm
ADS4125
ADS4142
ADS4145
(1) For all available packages, see the orderable addendum at
the end of the datasheet.
ADS4122 Block Diagram


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