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Maxim Integrated Semiconductor Electronic Components Datasheet

MAX1446 Datasheet

10-Bit / 60Msps / 3.0V / Low-Power ADC

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19-1729; Rev 4; 11/08
EVAALVUAAILTAIOBNLEKIT
10-Bit, 60Msps, 3.0V, Low-Power
ADC with Internal Reference
General Description
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.
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.
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.
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.
Features
o Single 3.0V Operation
o Excellent Dynamic Performance
59.5dB SNR at fIN = 20MHz
73dB SFDR at fIN = 20MHz
o Low Power:
30mA (Normal Operation)
5µA (Shutdown Mode)
o Fully Differential Analog Input
o Wide 2VP-P Differential Input Voltage Range
o 400MHz -3dB Input Bandwidth
o On-Chip 2.048V Precision Bandgap Reference
o CMOS-Compatible Three-State Outputs
o 32-Pin TQFP Package
o Evaluation Kit Available (MAX1448 EV Kit)
Ordering Information
PART
TEMP RANGE
PIN-
PACKAGE
MAX1446EHJ+
-40°C to +85°C
32 TQFP
MAX1446GHJ+
-40°C to +105°C 32 TQFP
+Denotes a lead(Pb)-free/RoHS-compliant package.
________________________Applications
Ultrasound Imaging
CCD Imaging
Baseband and IF Digitization
Digital Set-Top Boxes
Video Digitizing Applications
Pin-Compatible,
Lower/Higher Speed Versions
PART
MAX1444
MAX1448
MAX1449
SAMPLING SPEED (Msps)
40
80
105
Functional Diagram
CLK
IN+
T/H
IN-
PD REF
CONTROL
PIPELINE ADC
REF SYSTEM +
BIAS
MAX1446
VDD
GND
D
E
C
10
OUTPUT
DRIVERS
D9–D0
OVDD
OGND
REFOUT REFIN REFP COM REFN
OE
________________________________________________________________ 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.


Maxim Integrated Semiconductor Electronic Components Datasheet

MAX1446 Datasheet

10-Bit / 60Msps / 3.0V / Low-Power ADC

No Preview Available !

10-Bit, 60Msps, 3.0V, Low-Power
ADC with Internal Reference
ABSOLUTE MAXIMUM RATINGS
VDD, OVDD to GND ...............................................-0.3V to +3.6V
OGND to GND.......................................................-0.3V to +0.3V
IN+, IN- to GND........................................................-0.3V to VDD
REFIN, REFOUT, REFP,
REFN, and COM to GND.........................-0.3V to (VDD + 0.3V)
OE, PD, CLK to GND..................................-0.3V to (VDD + 0.3V)
D9–D0 to GND.........................................-0.3V to (OVDD + 0.3V)
Continuous Power Dissipation (TA = +70°C)
32-Pin TQFP (derate 18.7mW/°C above +70°C)......1495.3mW
Operating Temperature Ranges:
MAX1446EHJ+ .................................................-40°C to +85°C
MAX1446GHJ+...............................................-40°C to +105°C
Storage Temperature Range ............................-60°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
ELECTRICAL CHARACTERISTICS
(VDD = 3.0V, OVDD = 2.7V; 0.1µF and 1.0µF capacitors from REFP, REFN, and COM to GND; VREFIN = 2.048V, REFOUT connected
to REFIN through a 10kΩ resistor, VIN = 2VP-P (differential with respect to COM), CL 10pF at digital outputs, fCLK = 62.5MHz
(50% duty cycle), TA = TMIN to TMAX, unless otherwise noted. +25°C guaranteed by production test, < +25°C guaranteed by design
and characterization. Typical values are at TA = +25°C.)
PARAMETER
DC ACCURACY
Resolution
Integral Nonlinearity
Differential Nonlinearity
Offset Error
Gain Error
ANALOG INPUT
Input Differential Range
Common-Mode Voltage Range
SYMBOL
CONDITIONS
INL
DNL
fIN = 7.492MHz, TA +25°C
No missing codes, fIN = 7.492MHz
TA +25°C
VDIFF
VCOM
Differential or single-ended inputs
MIN TYP MAX UNITS
10
±0.6
±0.4
-1.6 < ±0.1
0
±1.9
±1.0
±1.9
±2.0
Bits
LSB
LSB
% FS
% FS
±1.0
VDD/2
± 0.5
V
V
Input Resistance
Input Capacitance
CONVERSION RATE
Maximum Clock Frequency
Data Latency
DYNAMIC CHARACTERISTICS
Signal-to-Noise Ratio
Signal-to-Noise + Distortion
(Up to 5th Harmonic)
Spurious-Free Dynamic
Range
RIN
CIN
fCLK
SNR
SINAD
SFDR
Switched capacitor load
fIN = 7.492MHz
fIN = 19.943MHz
fIN = 39.9MHz (Note 1)
fIN = 7.492MHz
fIN = 19.943MHz
fIN = 39.9MHz (Note 1)
fIN = 7.492MHz
fIN = 19.943MHz
fIN = 39.9MHz (Note 1)
33
5
60
5.5
57
56.5
56.6
56.2
65
63
59.5
59.5
59
59.4
59
58.5
74
73
71
kΩ
pF
MHz
Cycles
dB
dB
dBc
2 _______________________________________________________________________________________


Part Number MAX1446
Description 10-Bit / 60Msps / 3.0V / Low-Power ADC
Maker Maxim
Total Page 20 Pages
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