THS1240 Datasheet, PDF (1/20 Pages) Texas Instruments – 12-BIT 40 MSPS IF SAMPLING COMMUNICATIONS ANALOG-TO-DIGITAL CONVERTER

THS1240
12-BIT 40 MSPS IF SAMPLING COMMUNICATIONS
ANALOG-TO-DIGITAL CONVERTER
SLAS279D – JUNE 2000 – REVISED JANUARY 2001
features
D 40-MSPS Sample Rate
D 12-Bit Resolution
D No Missing Codes
D On-Chip Sample and Hold
D 77-dB Spurious Free Dynamic Range at
f_IN = 15.5 MHz
D 5-V Analog and Digital Supply
D 3-V and 5-V CMOS Compatible Digital
Output
D 10.4 Bit ENOB at f_IN = 31 MHz
D 65 dB SNR at f_IN = 15.5 MHz
D 120-MHz Bandwidth
D Internal or External Reference
D Buffered Differential Analog Input
D 2s Complement Digital Outputs
D Typical 380 mW Power Consumption
D Single-Ended or Differential Low-Level
Clock Input
48 PHP PACKAGE
(TOP VIEW)
AV_SS
AV_DD
V_IN+
V_IN–
AV_DD
V_REFOUT–
V_REFIN–
V_REFIN+
V_REFOUT+
V_BG
AV_SS
AV_DD
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D0
D1
D2
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D4
D5
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applications
D Wireless Local Loop
D Wireless Internet Access
D Cable Modem Receivers
D Medical Ultrasound
D Magnetic Resonant Imaging
description
The THS1240 is a high-speed low noise 12-bit CMOS pipelined analog-to-digital converter. A differential sample
and hold minimizes even order harmonics and allows for a high degree of common mode rejection at the analog
input. A buffered analog input enables operation with a constant analog input impedance, and prevents transient
voltage spikes from feeding backward to the analog input source. Full temperature DNL performance allows
for industrial application with the assurance of no missing codes. The THS1240 can operate with either internal
or external references. Internal reference usage selection is accomplished simply by externally connecting
reference output terminals to reference input terminals.
AVAILABLE OPTIONS
PACKAGE
TA
48-TQFP
(PHP)
– 40°C to 85°C
THS1240I
0°C to 70°C
THS1240C
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.
PRODUCTION DATA information is 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.
• POST OFFICE BOX 655303 DALLAS, TEXAS 75265
Copyright  2001, Texas Instruments Incorporated
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