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The MAX1208 is a 3.3V, 12-bit, 80Msps analog-to-digital
converter (ADC) featuring a fully differential wideband
track-and-hold (T/H) input amplifier, driving a low-noise
internal quantizer. The analog input stage accepts singleended
or differential signals. The MAX1208 is optimized
for low power, small size, and high dynamic performance
in baseband applications.
Powered from a single 3.0V to 3.6V supply, the
MAX1208 consumes only 373mW while delivering a
typical signal-to-noise (SNR) performance of 68.2dB at
an input frequency of 32.5MHz. In addition to low operating
power, the MAX1208 features a 3µW power-down
mode to conserve power during idle periods.
A flexible reference structure allows the MAX1208 to use
the internal 2.048V bandgap reference or accept an
externally applied reference. The reference structure
allows the full-scale analog input range to be adjusted
from ±0.35V to ±1.15V. The MAX1208 provides a common-
mode reference to simplify design and reduce external
component count in differential analog input circuits.
The MAX1208 supports both a single-ended and differential
input clock drive. Wide variations in the clock
duty cycle are compensated with the ADC's internal
duty-cycle equalizer (DCE).
ADC conversion results are available through a 12-bit,
parallel, CMOS-compatible output bus. The digital output
format is pin selectable to be either two's complement
or Gray code. A data-valid indicator eliminates
external components that are normally required for reliable
digital interfacing. A separate digital power input
accepts a wide 1.7V to 3.6V supply, allowing the
MAX1208 to interface with various logic levels.
The MAX1208 is available in a 6mm x 6mm x 0.8mm,
40-pin thin QFN package with exposed paddle (EP),
and is specified for the extended industrial (-40°C to
+85°C) temperature range.
See a parametric table of the complete family of pin-compatible, 12-/14-bit high-speed ADCs.
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