ADS6143IRHB25 Datasheet, PDF (1/67 Pages) Texas Instruments – 14-BITS, 125/105/80/65 MSPS ADC WITH DDR LVDS/CMOS OUTPUTS

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ADS6145, ADS6144
ADS6143, ADS6142
SLWS198B – JULY 2007 – REVISED MARCH 2008
14-BITS, 125/105/80/65 MSPS ADC WITH DDR LVDS/CMOS OUTPUTS
FEATURES
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• Maximum Sample Rate: 125 MSPS
• 14-Bit Resolution with No Missing Codes
• 3.5 dB Coarse Gain and up to 6 dB
Programmable Fine Gain for SNR/SFDR
Trade-Off
• Parallel CMOS and Double Data Rate (DDR)
LVDS Output Options
• Supports Sine, LVCMOS, LVPECL, LVDS Clock
Inputs, and Clock Amplitude Down to 400
mV_PP
• Clock Duty Cycle Stabilizer
• Internal Reference with Support for External
Reference
• No External Decoupling Required for
References
• Programmable Output Clock Position and
Drive Strength to Ease Data Capture
• 3.3-V Analog and 1.8-V to 3.3-V Digital Supply
• 32-QFN Package (5 mm × 5 mm)
• Pin Compatible 12-Bit Family (ADS612X)
APPLICATIONS
• Wireless Communications Infrastructure
• Software Defined Radio
• Power Amplifier Linearization
• 802.16d/e
• Test and Measurement Instrumentation
• High Definition Video
• Medical Imaging
• Radar Systems
DESCRIPTION
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.
The ADS614X feature coarse and fine gain options to
improve SFDR performance at lower full-scale analog
input ranges.
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,
LVDS current, and internal termination
programmability.
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.
The ADS614X include internal references while
eliminating traditional reference pins and associated
external decoupling. External reference mode is also
supported.
The ADS614X are specified over the industrial
temperature range (–40°C to 85°C).
ADS614X Performance Summary
SFDR, dBc
SINAD, dBFS
F_in = 10 MHz (0 dB gain)
F_in = 170 MHz (3.5 dB gain)
F_in = 10 MHz (0 dB gain)
F_in = 170 MHz (3.5 dB gain)
Power, mW
ADS6145
90
78
73.7
68.6
417
ADS6144
91
82
74.1
70.5
374
ADS6143
93
83
74.5
70.6
318
ADS6142
95
84
74.6
71.5
285
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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