The MAX1438 octal, 12-bit analog-to-digital converter (ADC) features fully differential inputs, a pipelined architecture, and digital error correction incorporating a fully differential signal path. This ADC is optimized for low-power and high-dynamic performance in medical imaging instrumentation and digital communications applications. The MAX1438 operates from a 1.8V single supply and consumes only 913mW (114mW per channel) while delivering a 69.9dB (typ) signal-to-noise ratio (SNR) at a 5.3MHz input frequency. In addition to low operating power, the MAX1438 features a power-down mode for idle periods.
An internal 1.24V precision bandgap reference sets the full-scale range of the ADC. A flexible reference structure allows the use of an external reference for applications requiring increased accuracy or a different input voltage range. The reference architecture is optimized for low noise.
A single-ended clock controls the data-conversion process. An internal duty-cycle equalizer compensates for wide variations in clock duty cycle. An on-chip PLL generates the high-speed serial low-voltage differential signal (LVDS) clock.
The MAX1438 has self-aligned serial LVDS outputs for data, clock, and frame-alignment signals. The output data is presented in two's complement or binary format.
* Some packages have variations, listed on the drawing. "PkgCode/Variation" tells which variation the product uses. Note that "+", "#", "-" in the part number suffix describes RoHS status. Package drawings may show a different suffix character.
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MAX1438
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TYPE PINS FOOTPRINT
DRAWING CODE/VAR *
Temp
RoHS/Lead-Free? Materials Analysis
MAX1438ECQ+D
Active
TQFP-EP;100 pin;256 mm²
Outline Drawing: 21-0116 (PDF)
Land Pattern: 90-0153 (PDF)
Use pkgcode/variation: C100E+2*
MAX1437 Octal, 12-Bit, 50Msps, 1.8V ADC with Serial LVDS Outputs MAX1434 Octal, 10-Bit, 50Msps, 1.8V ADC with Serial LVDS Outputs MAX1436 Octal, 12-Bit, 40Msps, 1.8V ADC with Serial LVDS Outputs MAX1436B Octal, 12-Bit, 40Msps, 1.8V ADC with Serial LVDS Outputs
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