ADS5474_14 Datasheet, PDF (1/41 Pages) Texas Instruments – 14-Bit, 400-MSPS Analog-to-Digital Converter

ADS5474
www.ti.com
SLAS525B – JULY 2007 – REVISED FEBRUARY 2012
14-Bit, 400-MSPS Analog-to-Digital Converter
Check for Samples: ADS5474
FEATURES
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•23 400-MSPS Sample Rate
• 14-Bit Resolution, 11.2-Bits ENOB
• 1.4-GHz Input Bandwidth
• SFDR = 80 dBc at 230 MHz and 400 MSPS
• SNR = 69.8 dBFS at 230 MHz and 400 MSPS
• 2.2-V_PP Differential Input Voltage
• LVDS-Compatible Outputs
• Total Power Dissipation: 2.5 W
• Power Down Mode: 50 mW
• Offset Binary Output Format
• Output Data Transitions on the Rising and
Falling Edges of a Half-Rate Output Clock
• On-Chip Analog Buffer, Track-and-Hold, and
Reference Circuit
• TQFP-80 PowerPAD™ Package
(14 mm × 14 mm footprint)
• Industrial Temperature Range:
–40°C to +85°C
• Pin-Similar/Compatible with 12-, 13-, and 14-Bit
Family:
ADS5463 and ADS5440/ADS5444
APPLICATIONS
• Test and Measurement Instrumentation
• Software-Defined Radio
• Data Acquisition
• Power Amplifier Linearization
• Communication Instrumentation
• Radar
DESCRIPTION
The ADS5474 is a 14-bit, 400-MSPS analog-to-digital converter (ADC) that operates from both a 5-V supply and
3.3-V supply while providing LVDS-compatible digital outputs. This ADC is one of a family of 12-, 13-, and 14-bit
ADCs that operate from 210 MSPS to 500 MSPS. The ADS5474 input buffer isolates the internal switching of the
onboard track and hold (T&H) from disturbing the signal source while providing a high-impedance input. An
internal reference generator is also provided to simplify the system design.
Designed with a 1.4-GHz input bandwidth for the conversion of wide-bandwidth signals that exceed 400 MHz of
input frequency at 400 MSPS, the ADS5474 has outstanding low-noise performance and spurious-free dynamic
range over a large input frequency range.
The ADS5474 is available in an TQFP-80 PowerPAD package. The device is built on Texas Instruments
complementary bipolar process (BiCom3) and is specified over the full industrial temperature range (–40°C to
+85°C).
VIN
A1
TH1
VIN
VREF
Reference
TH2
+_S
A2
–
ADC1
DAC1
5
TH3
+_S
A3
–
ADC2
DAC2
5
Digital Error Correction
CLK
Timing
CLK
OVR OVR DRY DRY
D[13:0]
ADC3
6
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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.
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All other trademarks are the property of their respective owners.
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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 © 2007–2012, Texas Instruments Incorporated