ADS5231 Analog-to-Digital Converter Datasheet

ADS5231 Datasheet, PDF, Equivalent


Part Number

ADS5231

Description

Analog-to-Digital Converter

Manufacture

Burr-Brown

Total Page 26 Pages
Datasheet
Download ADS5231 Datasheet


ADS5231
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BurrĆBrown Products
from Texas Instruments
ADS5231
SBAS295A – JULY 2004 – REVISED JANUARY 2007
Dual, 12-Bit, 40MSPS, +3.3V
Analog-to-Digital Converter
FEATURES
Single +3.3V Supply
High SNR: 70.7dBFS at fIN = 5MHz
Total Power Dissipation:
Internal Reference: 321mW
External Reference: 285mW
Internal or External Reference
Low DNL: ±0.3LSB
Flexible Input Range: 1.5VPP to 2VPP
TQFP-64 Package
APPLICATIONS
Communications IF Processing
Communications Base Stations
Test Equipment
Medical Imaging
Video Digitizing
CCD Digitizing
DESCRIPTION
The ADS5231 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 ADS5231 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 ADS5231 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 printed circuit board
(PCB).
The ADS5231 employs digital error correction
techniques to provide excellent differential linearity
for demanding imaging applications. The ADS5231 is
available in a TQFP-64 package.
AVDD SDATA SEN SCLK SEL VDRV OEA
ADS5231
Serial
Interface
DISABLE_PLL
INA
VIN
INA
INT/EXT
CM
REFT
REFB
12-Bit
S/H Pipelined
ADC
Internal
Reference
Error
Correction
Logic
3-State
Output
Timing/Duty Cycle
Adjust (PLL)
D11A
·
·
·
D0A
OVRA
DVA
CLK
DVB
INB
VIN
S/H
INB
12-Bit
Pipelined
ADC
Error
Correction
Logic
3-State
Output
D11B
·
·
·
D0B
OVRB
STPD
OEB
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 © 2004–2007, Texas Instruments Incorporated

ADS5231
ADS5231
SBAS295A – JULY 2004 – REVISED JANUARY 2007
www.ti.com
This integrated circuit can be damaged by ESD. Texas Instruments recommends that all integrated circuits be handled with
appropriate precautions. Failure to observe proper handling and installation procedures can cause damage.
ESD damage can range from subtle performance degradation to complete device failure. Precision integrated circuits may be
more susceptible to damage because very small parametric changes could cause the device not to meet its published
specifications.
ORDERING INFORMATION(1)
PRODUCT
ADS5231
PACKAGE-LEAD
TQFP-64
PACKAGE
DESIGNATOR
PAG
SPECIFIED
TEMPERATURE
RANGE
–40°C to +85°C
PACKAGE
MARKING
ADS5231IPAG
ORDERING
NUMBER
ADS5231IPAG
ADS5231IPAGT
TRANSPORT
MEDIA, QUANTITY
Tray, 160
Tape and Reel, 250
(1) For the most current package and ordering information see the Package Option Addendum at the end of this document, or see the TI
web site at www.ti.com.
ABSOLUTE MAXIMUM RATINGS(1)
Supply Voltage Range, AVDD
Supply Voltage Range, VDRV
Voltage Between AVDD and VDRV
Voltage Applied to External REF Pins
Analog Input Pins(2)
Case Temperature
Operating Free-Air Temperature Range, TA
Lead Temperature
Junction Temperature
Storage Temperature
–0.3V to +3.8V
–0.3V to +3.8V
–0.3V to +0.3V
–0.3V to +2.4V
–0.3V to min. [3.3V, (AVDD + 0.3V)]
+100°C
–40°C to +85°C
+260°C
+105°C
–65°C to +150°C
(1) Stresses above those listed under Absolute Maximum Ratings may cause permanent damage to the device. Exposure to absolute
maximum conditions for extended periods may affect device reliability.
(2) The dc voltage applied on the input pins should not go below –0.3V. Also, the dc voltage should be limited to the lower of either 3.3V or
(AVDD + 0.3V). If the input can go higher than +3.3V, then a resistor greater than or equal to 25should be added in series with each
of the input pins. Also, the duty cycle of the overshoot beyond +3.3V should be limited. The overshoot duty cycle can be defined either
as a percentage of the time of overshoot over a clock period, or over the entire device lifetime. For a peak voltage between +3.3V and
+3.5V, a duty cycle up to 10% is acceptable. For a peak voltage between +3.5V and +3.7V, the overshoot duty cycle should not exceed
1%. Any overshoot beyond +3.7V should be restricted to less than 0.1% duty cycle, and never exceed +3.9V.
2 Submit Documentation Feedback


Features www.DataSheet4U.com BurrĆBrown Product s from Texas Instruments ADS5231 SBAS2 95A – JULY 2004 – REVISED JANUARY 2 007 Dual, 12-Bit, 40MSPS, +3.3V Analog -to-Digital Converter FEATURES • • • Single +3.3V Supply High SNR: 70.7d BFS at fIN = 5MHz Total Power Dissipati on: Internal Reference: 321mW External Reference: 285mW Internal or External R eference Low DNL: ±0.3LSB Flexible Inp ut Range: 1.5VPP to 2VPP TQFP-64 Packag e DESCRIPTION The ADS5231 is a dual, h igh-speed, high dynamic range, 12-bit p ipelined analog-to-digital converter (A DC). This converter includes a high-ban dwidth sample-and-hold amplifier that g ives excellent spurious performance up to and beyond the Nyquist rate. The dif ferential nature of the sample-and-hold amplifier and ADC circuitry minimizes even-order harmonics and gives excellen t common-mode noise immunity. The ADS52 31 provides for setting the full-scale range of the converter without any exte rnal reference circuitry. The internal reference can be disabled, allowing .
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