from Texas Instruments
SBAS295A – JULY 2004 – REVISED JANUARY 2007
Dual, 12-Bit, 40MSPS, +3.3V
• 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
• Communications IF Processing
• Communications Base Stations
• Test Equipment
• Medical Imaging
• Video Digitizing
• CCD Digitizing
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
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
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
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PRODUCTION DATA information is current as of publication date.
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