ADS5444
www.ti.com
SLWS162A–AUGUST 2005–REVISED FEBRUARY 2006
13-BIT 250 MSPS ANALOG-TO-DIGITAL CONVERTER
FEATURES
APPLICATIONS
•
•
•
•
•
Test and Measurement
Software-Defined Radio
Multi-channel Basestation Receivers
Basestation Tx Digital Predistortion
Communications Instrumentation
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
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 VPP Differential Input Voltage
Fully Buffered Analog Inputs
RELATED PRODUCTS
•
•
•
ADS5424 - 14-bit, 105 MSPS ADC
ADS5423 - 14-bit, 80 MSPS ADC
ADS5440 - 13-bit, 210 MSPS ADC
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
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
DV
DD
DD
AIN
AIN
+
+
Σ
Σ
A1
TH1
TH2
A2
TH3
A3
ADC3
−
−
ADC1
DAC1
ADC2
DAC2
VREF
Reference
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.
Copyright © 2005–2006, Texas Instruments Incorporated
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.