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MAX1438 PDF预览

MAX1438

更新时间: 2024-11-03 14:58:27
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22页 444K
描述
八路、12位、65Msps、1.8V ADC,串行LVDS输出

MAX1438 数据手册

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19-0359; Rev 1; 2/11  
Octal, 12-Bit, 65Msps, 1.8V ADC  
with Serial LVDS Outputs  
MAX1438  
General Description  
Features  
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 chan-  
nel) 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.  
o Excellent Dynamic Performance  
69.9dB SNR at 5.3MHz  
95dBc SFDR at 5.3MHz  
85dB Channel Isolation  
o Ultra-Low Power  
114mW per Channel (Normal Operation)  
o Serial LVDS Outputs  
o Pin-Selectable LVDS/SLVS (Scalable Low-Voltage  
Signal) Mode  
o LVDS Outputs Support Up to 30 Inches FR-4  
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.  
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  
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.  
o Compact, 100-Pin TQFP Package with Exposed  
Pad  
o Evaluation Kit Available (Order MAX1438EVKIT)  
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.  
Ordering Information  
The MAX1438 offers a maximum sample rate of  
65Msps. See the Pin-Compatible Versions table below  
for lower-speed versions. This device is available in a  
small, 14mm x 14mm x 1mm, 100-pin TQFP package  
with exposed pad and is specified for the extended  
industrial (-40°C to +85°C) temperature range.  
PART  
TEMP RANGE PIN-PACKAGE  
100 TQFP-EP*  
(14mm x 14mm x 1mm)  
MAX1438ECQ+D -40°C to +85°C  
+Denotes a lead(Pb)-free/RoHS-compliant package.  
D = Dry pack.  
*EP = Exposed pad.  
Applications  
Ultrasound and Medical Imaging  
Pin-Compatible Versions  
Instrumentation  
SAMPLING RATE  
(Msps)  
RESOLUTION  
(BITS)  
Multichannel Communications  
PART  
MAX1434  
MAX1436  
MAX1437  
MAX1438  
50  
40  
50  
65  
10  
12  
12  
12  
Pin Configuration appears at end of data sheet.  
________________________________________________________________ Maxim Integrated Products  
1
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,  
or visit Maxim’s website at www.maxim-ic.com.  

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