ADS5444 Datasheet, PDF (1/29 Pages) Texas Instruments – 13-BIT 250 MSPS ANALOG-TO-DIGITAL CONVERTER

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ADS5444
SLWS162A – AUGUST 2005 – REVISED FEBRUARY 2006
13-BIT 250 MSPS ANALOG-TO-DIGITAL CONVERTER
FEATURES
• 13-Bit Resolution
• 250 MSPS Sample Rate
• SNR = 69 dBc at 100-MHz IF and 250 MSPS
• SFDR = 76 dBc at 100-MHz IF and 250 MSPS
• SNR = 67.7 dBc at 230-MHz IF and 250 MSPS
• SFDR = 77 dBc at 230-MHz IF and 250 MSPS
• 2.2 V_PP Differential Input Voltage
• Fully Buffered Analog Inputs
• 5 V Analog Supply Voltage
• LVDS Compatible Outputs
• Total Power Dissipation: 2 W
• Offset Binary Output Format
• TQFP-80 PowerPAD™ Package
• Pin Compatible with the ADS5440
• Industrial Temperature Range = –40°C to 85°C
APPLICATIONS
• Test and Measurement
• Software-Defined Radio
• Multi-channel Basestation Receivers
• Basestation Tx Digital Predistortion
• Communications Instrumentation
RELATED PRODUCTS
• ADS5424 - 14-bit, 105 MSPS ADC
• ADS5423 - 14-bit, 80 MSPS ADC
• ADS5440 - 13-bit, 210 MSPS ADC
DESCRIPTION
The ADS5444 is a 13-bit 250 MSPS analog-to-digital converter (ADC) that operates from a 5 V supply, while
providing LVDS-compatible digital outputs from a 3.3 V supply. The ADS5444 input buffer isolates the internal
switching of the onboard track and hold (T&H) from disturbing the signal source. An internal reference generator
is also provided to further simplify the system design. The ADS5444 has outstanding low noise and linearity over
input frequency.
AV_DD DV_DD
AIN
AIN
A1
TH1
VREF
Reference
TH2
+_Σ
A2
−
TH3
+_Σ
A3
ADC3
−
ADC1
DAC1
ADC2
DAC2
5
5
5
Digital Error Correction
CLK
CLK
Timing
OVR OVR DRY DRY
D[12:0]
GND
B0061-01
The ADS5444 is available in an 80-pin TQFP PowerPAD™ package. The ADS5444 is built on a state of the art
Texas Instruments complementary bipolar process (BiCom3X) and is specified over the full industrial
temperature range (–40°C to 85°C).
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.
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 © 2005–2006, Texas Instruments Incorporated