ADS5232_14 Datasheet, PDF (1/32 Pages) Texas Instruments – Dual, 12-Bit, 65MSPS, +3.3V Analog-to-Digital Converter

BurrĆBrown Products
from Texas Instruments
ADS5232
SBAS294A – JUNE 2004 – REVISED MARCH 2006
Dual, 12-Bit, 65MSPS, +3.3V
Analog-to-Digital Converter
FEATURES
• Single +3.3V Supply
• High SNR: 70.7dBFS at f_IN = 5MHz
• Total Power Dissipation:
Internal Reference: 371mW
External Reference: 335mW
• Internal or External Reference
• Low DNL: ±0.3LSB
• Flexible Input Range: 1.5V_PP to 2V_PP
• TQFP-64 Package
APPLICATIONS
• Communications IF Processing
• Communications Base Stations
• Test Equipment
• Medical Imaging
• Video Digitizing
• CCD Digitizing
DESCRIPTION
The ADS5232 is a dual, high-speed, high dynamic
range, 12-bit pipelined analog-to-digital converter
(ADC). This converter includes a high-bandwidth
sample-and-hold amplifier that gives excellent
spurious performance up to and beyond the Nyquist
rate. The differential nature of the sample-and-hold
amplifier and ADC circuitry minimizes even-order
harmonics and gives excellent common-mode noise
immunity.
The ADS5232 provides for setting the full-scale range
of the converter without any external reference
circuitry. The internal reference can be disabled,
allowing low-drive, external references to be used for
improved tracking in multichannel systems.
The ADS5232 provides an over-range indicator flag
to indicate an input signal that exceeds the full-scale
input range of the converter. This flag can be used to
reduce the gain of front-end gain control circuitry.
There is also an output enable pin to allow for
multiplexing and testing on a PC board.
The ADS5232 employs digital error correction
techniques to provide excellent differential linearity for
demanding imaging applications. The ADS5232 is
available in a TQFP-64 package.
AV_DD SDATA SEN SCLK SEL V_DRV OE_A
ADS5232
Serial
Interface
DISABLE_PLL
IN_A
V_IN
IN_A
INT/EXT
CM
REFT
REFB
S/H
12-Bit
Pipelined
ADC
Error
Correction
Logic
3-State
Output
Internal
Reference
Timing/Duty Cycle
Adjust (PLL)
D11A
·
·
·
D0A
OVR_A
DV_A
CLK
DV_B
IN_B
V_IN
S/H
IN_B
12-Bit
Pipelined
ADC
Error
Correction
Logic
3-State
Output
D11B
·
·
·
D0B
OVR_B
STPD
OE_B
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.
All trademarks are the property of their respective owners.
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 © 2004–2006, Texas Instruments Incorporated