ADS6125, ADS6124
ADS6123, ADS6122
www.ti.com
SLAS560A–OCTOBER 2007–REVISED MARCH 2008
12-BITS, 125/105/80/65 MSPS ADC WITH DDR LVDS/CMOS OUTPUTS
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FEATURES
DESCRIPTION
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Maximum Sample Rate: 125 MSPS
12-Bit Resolution with No Missing Codes
ADS6125/ADS6124/ADS6123/ADS6122 (ADS612X)
is a family of 12-bit A/D converters with sampling
frequencies up to 125 MSPS. It combines high
3.5 dB Coarse Gain and up to 6 dB
Programmable Fine Gain for SNR/SFDR
Trade-Off
performance and low power consumption in
a
compact 32 QFN package. Using an internal high
bandwidth sample and hold and a low jitter clock
buffer helps to achieve high SNR and high SFDR
even at high input frequencies.
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Parallel CMOS and Double Data Rate (DDR)
LVDS Output Options
Supports Sine, LVCMOS, LVPECL, LVDS Clock
Inputs and Clock Amplitude Down to 400 mVPP
It features coarse and fine gain options that are used
to improve SFDR performance at lower full-scale
analog input ranges.
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Clock Duty Cycle Stabilizer
Internal Reference with Support for External
Reference
The digital data outputs are either parallel CMOS or
DDR LVDS (Double Data Rate). Several features
exist to ease data capture such as — controls for
output clock position and output buffer drive strength,
and LVDS current and internal termination
programmability.
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No External Decoupling Required for
References
Programmable Output Clock Position and
Drive Strength to Ease Data Capture
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3.3 V Analog and 1.8 V to 3.3 V Digital Supply
32-QFN Package (5 mm × 5 mm)
The output interface type, gain, and other functions
are programmed using a 3-wire serial interface.
Alternatively, some of these functions are configured
using dedicated parallel pins so that the device
comes up in the desired state after power-up.
Pin Compatible 12-Bit Family (ADS612X)
APPLICATIONS
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Wireless Communications Infrastructure
Software Defined Radio
Power Amplifier Linearization
802.16d/e
Test and Measurement Instrumentation
High Definition Video
ADS612X includes internal references, while
eliminating the traditional reference pins and
associated external decoupling. External reference
mode is also supported.
The devices are specified over the industrial
temperature range (–40°C to 85°C).
Medical Imaging
Radar Systems
ADS612X Performance Summary
ADS6125
90
ADS6124
91
ADS6123
93
ADS6122
95
Fin = 10 MHz (0 dB gain)
Fin = 170 MHz (3.5 dB gain)
Fin = 10 MHz (0 dB gain)
Fin = 170 MHz (3.5 dB gain)
Power, mW
SFDR, dBc
78
82
83
84
71.1
67.6
417
71.3
69.1
374
71.5
69.2
318
71.6
69.8
285
SINAD, dBFS
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Texas 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 © 2007–2008, Texas Instruments Incorporated