MAX1437B Datasheet, PDF (1/22 Pages) Maxim Integrated Products – Octal, 12-Bit, 50Msps, 1.8V ADC with Serial LVDS Outputs

19-4204; Rev 1; 12/08
EVAALVUAAILTAIOBNLEKIT
Octal, 12-Bit, 50Msps, 1.8V ADC
with Serial LVDS Outputs
General Description
The MAX1437B 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 MAX1437B operates from a 1.8V sin-
gle supply and consumes only 768mW (96mW per
channel) while delivering a 70.2dB (typ) signal-to-noise
ratio (SNR) at a 5.3MHz input frequency. In addition to
low operating power, the MAX1437B features a low-
power standby mode for idle periods.
An internal 1.24V precision bandgap reference sets the
full-scale range of the ADC. A flexible reference struc-
ture allows the use of an external reference for applica-
tions 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
phase-locked loop (PLL) generates the high-speed ser-
ial low-voltage differential signal (LVDS) clock.
The MAX1437B has self-aligned serial LVDS outputs for
data, clock, and frame-alignment signals. The output
data is presented in two’s complement format.
The MAX1437B offers a maximum sample rate of
50Msps. This device is available in a small, 10mm x
10mm x 0.8mm, 68-pin thin QFN package with exposed
pad and is specified for the extended industrial (-40°C
to +85°C) temperature range.
Applications
Ultrasound and Medical Imaging
Instrumentation
Multichannel Communications
Features
o Excellent Dynamic Performance
70.2dB SNR at 5.3MHz
98dBc SFDR at 5.3MHz
82dB Channel Isolation at 5.3MHz
o Ultra-Low Power
96mW per Channel (Normal Operation)
o Serial LVDS Outputs
o Pin-Selectable LVDS/SLVS (Scalable Low-Voltage
Signal) Mode
o LVDS Outputs Support Up to 30in FR-4 Backplane
Connections
o Test Mode for Digital Signal Integrity
o Fully Differential Analog Inputs
o Wide Differential Input Voltage Range (1.4V_P-P)
o On-Chip 1.24V Precision Bandgap Reference
o Clock Duty-Cycle Equalizer
o Compact, 68-Pin Thin QFN Package with Exposed
Pad
o Evaluation Kit Available (Order MAX1437BEVKIT)
Ordering Information
PART
TEMP RANGE
PIN-PACKAGE
MAX1437BETK+ -40°C to +85°C
68 Thin QFN-EP*
+Denotes a lead(Pb)-free/RoHS-compliant package.
*EP = Exposed pad.
Pin Configuration appears at end of data sheet.
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or visit Maxim’s website at www.maxim-ic.com.