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MAX1420 fiches techniques PDF

Maxim Integrated - 12-Bit / 60Msps / +3.3V / Low-Power ADC with Internal Reference

Numéro de référence MAX1420
Description 12-Bit / 60Msps / +3.3V / Low-Power ADC with Internal Reference
Fabricant Maxim Integrated 
Logo Maxim Integrated 





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MAX1420 fiche technique
19-1981; Rev 0; 5/01
12-Bit, 60Msps, +3.3V, Low-Power ADC
with Internal Reference
General Description
The MAX1420, +3.3V, 12-bit analog-to-digital converter
(ADC) features a fully-differential input, pipelined, 12-
stage ADC architecture with wideband track-and-hold
(T/H) and digital error correction, incorporating a fully-
differential signal path. The MAX1420 is optimized for
low-power, high dynamic performance applications in
imaging and digital communications. The converter
operates from a single +3.3V supply, and consumes
only 221mW. The fully-differential input stage has a
small signal -3dB bandwidth of 400MHz and may be
operated with single-ended inputs.
An internal +2.048V precision bandgap reference sets
the full-scale range of the ADC. A flexible reference
structure accommodates an internal reference, or
externally applied buffered or unbuffered reference for
applications that require increased accuracy and a dif-
ferent input voltage range.
In addition to low operating power, the MAX1420 fea-
tures two power-down modes: reference power-down
and shutdown mode. In reference power-down, the
internal bandgap reference is deactivated, which
results in a typical 2mA supply current reduction. A full
shutdown mode is available to maximize power savings
during idle periods.
The MAX1420 provides parallel, offset binary, CMOS-
compatible three-state outputs.
The MAX1420 is available in a 7mm 7mm, 48-pin
TQFP package, and is specified over the commercial
(0°C to +70°C) and the extended industrial (-40°C to
+85°C) temperature range.
Pin-compatible lower speed versions of the MAX1420
are also available. Please refer to the MAX1421 data
sheet for 40Msps and the MAX1422 data sheet for
20Msps.
________________________Applications
Medical Ultrasound Imaging
CCD Pixel Processing
IR Focal Plane Arrays
Radar
IF & Baseband Digitization
Features
o +3.3V Single Power Supply
o 67dB SNR at fIN = 5MHz
o 66dB SNR at fIN = 15MHz
o Internal +2.048V Precision Bandgap Reference
o Differential, Wideband Input T/H Amplifier
o Power-Down Modes:
218mW (Reference Shutdown Mode)
10µW (Shutdown Mode)
o Space-Saving 48-Pin TQFP Package
PART
MAX1420CCM
MAX1420ECM
Ordering Information
TEMP. RANGE
0°C to +70°C
-40°C to +85°C
PIN-PACKAGE
48 TQFP
48 TQFP
AGND
AVDD
AVDD
AGND
AGND
INP
INN
AGND
AGND
AVDD
AVDD
AGND
1
2
3
4
5
6
7
8
9
10
11
12
Pin Configuration
MAX1420
36 D9
35 D8
34 D7
33 D6
32 DVDD
31 DVDD
30 DGND
29 DGND
28 D5
27 D4
26 D3
25 D2
Functional diagram appears at end of data sheet.
48-TQFP
________________________________________________________________ Maxim Integrated Products 1
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.

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