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MAX1446_08

更新时间： 2024-01-31 12:11:46
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美信 - MAXIM /
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20页 246K
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10-Bit, 60Msps, 3.0V, Low-Power ADC with Internal Reference

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MAX1446_08 数据手册

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19-1729; Rev 4; 11/08  
10-Bit, 60Msps, 3.0V, Low-Power  
ADC with Internal Reference  
MAX146  
General Description  
Features  
The MAX1446 10-bit, 3V analog-to-digital converter  
(ADC) features a fully differential input, a pipelined 10-  
stage ADC architecture with digital error correction and  
wideband track and hold (T/H) incorporating a fully dif-  
ferential signal path. This ADC is optimized for low-  
power, high dynamic performance applications in  
imaging and digital communications. The MAX1446  
operates from a single 2.7V to 3.6V supply, consuming  
only 90mW while delivering a 59.5dB signal-to-noise  
ratio (SNR) at a 20MHz input frequency. The fully differ-  
ential input stage has a 400MHz, -3dB bandwidth and  
may be operated with single-ended inputs. In addition  
to low operating power, the MAX1446 features a 5µA  
power-down mode for idle periods.  
o Single 3.0V Operation  
o Excellent Dynamic Performance  
59.5dB SNR at f = 20MHz  
IN  
73dB SFDR at f = 20MHz  
IN  
o Low Power:  
30mA (Normal Operation)  
5µA (Shutdown Mode)  
o Fully Differential Analog Input  
o Wide 2V  
Differential Input Voltage Range  
P-P  
o 400MHz -3dB Input Bandwidth  
o On-Chip 2.048V Precision Bandgap Reference  
o CMOS-Compatible Three-State Outputs  
o 32-Pin TQFP Package  
An internal 2.048V precision bandgap reference is used  
to set the ADC full-scale range. A flexible reference  
structure allows the user to supply a buffered, direct or  
externally derived reference for applications requiring  
increased accuracy or a different input voltage range.  
o Evaluation Kit Available (MAX1448 EV Kit)  
Lower and higher speed, pin-compatible versions of  
the MAX1446 are also available. Refer to the MAX1444  
data sheet for a 40Msps version, the MAX1448 data  
sheet for an 80Msps version, and the MAX1449 data  
sheet for a 105Msps version.  
Ordering Information  
PIN-  
PACKAGE  
PART  
TEMP RANGE  
The MAX1446 has parallel, offset binary, three-state  
outputs that can be operated from 1.7V to 3.3V to allow  
flexible interfacing. The device is available in a 5mm x  
5mm, 32-pin TQFP package and is specified over the  
extended industrial (-40°C to +85°C) and automotive  
(-40°C to +105°C) temperature ranges.  
MAX1446EHJ+  
MAX1446GHJ+  
-40°C to +85°C  
-40°C to +105°C  
32 TQFP  
32 TQFP  
+Denotes a lead(Pb)-free/RoHS-compliant package.  
________________________Applications  
Functional Diagram  
Ultrasound Imaging  
CCD Imaging  
Baseband and IF Digitization  
Digital Set-Top Boxes  
Video Digitizing Applications  
CLK  
V
DD  
MAX1446  
CONTROL  
GND  
10  
D
E
C
IN+  
IN-  
OUTPUT  
DRIVERS  
D9–D0  
T/H  
PIPELINE ADC  
Pin-Compatible,  
Lower/Higher Speed Versions  
OV  
DD  
REF SYSTEM +  
BIAS  
PD  
REF  
OGND  
PART  
SAMPLING SPEED (Msps)  
MAX1444  
MAX1448  
MAX1449  
40  
80  
REFOUT REFIN REFP COM REFN  
OE  
105  
________________________________________________________________ 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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