ADS6145, ADS6144
ADS6143, ADS6142
www.ti.com
SLWS198A–JULY 2007–REVISED OCTOBER 2007
14-BITS, 125/105/80/65 MSPS ADC WITH DDR LVDS/CMOS OUTPUTS
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Radar Systems
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FEATURES
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Maximum Sample Rate: 125 MSPS
DESCRIPTION
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14-Bit Resolution with No Missing Codes
ADS6145/ADS6144/ADS6143/ADS6142 (ADS614X)
are a family of 14-bit A/D converters with sampling
frequencies up to 125 MSPS. The high performance
and low power consumption of the ADS614X are
combined in a compact 32 QFN package. An internal
high bandwidth sample and hold and a low jitter clock
buffer help to achieve high SNR and high SFDR even
at high input frequencies.
3.5 dB Coarse Gain and up to 6 dB
Programmable Fine Gain for SNR/SFDR
Trade-Off
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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
The ADS614X feature coarse and fine gain options 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 (Double Data Rate) LVDS. Several features
exist to ease data capture such as — controls for
output clock position and output buffer drive strength,
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No External Decoupling Required for
References
Programmable Output Clock Position and
Drive Strength to Ease Data Capture
LVDS
current,
and
internal
termination
programmability.
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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 functions are configured using
dedicated parallel pins so the device powers up to the
desired state.
Pin Compatible 12-Bit Family (ADS612X)
APPLICATIONS
The ADS614X include internal references while
eliminating traditional reference pins and associated
external decoupling. External reference mode is also
supported.
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Wireless Communications Infrastructure
Software Defined Radio
Power Amplifier Linearization
802.16d/e
Test and Measurement Instrumentation
High Definition Video
The ADS614X are specified over the industrial
temperature range (–40°C to 85°C).
Medical Imaging
ADS614X Performance Summary
ADS6145
90
ADS6144
91
ADS6143
93
ADS6142
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
73.7
68.6
417
74.1
70.5
374
74.5
70.6
318
74.6
71.5
285
SINAD, dBFS
1
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Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
UNLESS OTHERWISE NOTED this document contains
PRODUCTION DATA information current as of publication date.
Products conform to specifications per the terms of Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2007, Texas Instruments Incorporated