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MAX1446GHJ+

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P20
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.
________________________Applications
Ultrasound Imaging
CCD Imaging
Baseband and IF Digitization
Digital Set-Top Boxes
Video Digitizing Applications
Features
o Single 3.0V Operation
o Excellent Dynamic Performance
59.5dB SNR at f
IN
= 20MHz
73dB SFDR at f
IN
= 20MHz
o Low Power:
30mA (Normal Operation)
5µA (Shutdown Mode)
o Fully Differential Analog Input
o Wide 2V
P-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)
MAX1446
10-Bit, 60Msps, 3.0V, Low-Power
ADC with Internal Reference
________________________________________________________________
Maxim Integrated Products
1
CLK
IN+
CONTROL
10
PIPELINE ADC
REF SYSTEM +
BIAS
OUTPUT
DRIVERS
D
E
C
REF
REFINREFOUT REFP COM REFN OE
V
DD
GND
OV
DD
OGND
D9–D0
IN-
PD
T/H
MAX1446
Functional Diagram
19-1729; Rev 4; 11/08
EVALUATION KIT
AVAILABLE
Ordering Information
PART TEMP RANGE
PIN-
PACKAGE
MAX1446EHJ+ -40°C to +85°C 32 TQFP
MAX1446GHJ+ -40°C to +105°C 32 TQFP
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.
Pin-Compatible,
Lower/Higher Speed Versions
PART SAMPLING SPEED (Msps)
MAX1444 40
MAX1448 80
MAX1449 105
+
Denotes a lead(Pb)-free/RoHS-compliant package.
MAX1446
10-Bit, 60Msps, 3.0V, Low-Power
ADC with Internal Reference
2 _______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS
(V
DD
= 3.0V, OV
DD
= 2.7V; 0.1µF and 1.0µF capacitors from REFP, REFN, and COM to GND; V
REFIN
= 2.048V, REFOUT connected
to REFIN through a 10kΩ resistor, V
IN
= 2V
P-P
(differential with respect to COM), C
L
≈ 10pF at digital outputs, f
CLK
= 62.5MHz
(50% duty cycle), T
A
= T
MIN
to T
MAX
, unless otherwise noted. ≥+25°C guaranteed by production test, < +25°C guaranteed by design
and characterization. Typical values are at T
A
= +25°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.
V
DD
, OV
DD
to GND ...............................................-0.3V to +3.6V
OGND to GND.......................................................-0.3V to +0.3V
IN+, IN- to GND........................................................-0.3V to V
DD
REFIN, REFOUT, REFP,
REFN, and COM to GND.........................-0.3V to (V
DD
+ 0.3V)
OE, PD, CLK to GND..................................-0.3V to (V
DD
+ 0.3V)
D9–D0 to GND.........................................-0.3V to (OV
DD
+ 0.3V)
Continuous Power Dissipation (T
A
= +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
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
DC ACCURACY
Resolution 10 Bits
Integral Nonlinearity INL f
IN
= 7.492MHz, T
A
≥ +25°C ±0.6 ±1.9 LSB
Differential Nonlinearity DNL No missing codes, f
IN
= 7.492MHz ±0.4 ±1.0 LSB
Offset Error -1.6 < ±0.1 ±1.9 % FS
Gain Error T
A
≥ +25°C 0 ±2.0 % FS
ANALOG INPUT
Input Differential Range V
DIFF
Differential or single-ended inputs ±1.0 V
Common-Mode Voltage Range V
COM
V
DD
/2
± 0.5
V
Input Resistance R
IN
Switched capacitor load 33 kΩ
Input Capacitance C
IN
5pF
CONVERSION RATE
Maximum Clock Frequency f
CLK
60 MHz
Data Latency 5.5 Cycles
DYNAMIC CHARACTERISTICS
f
IN
= 7.492MHz 57 59.5
f
IN
= 19.943MHz 56.5 59.5Signal-to-Noise Ratio SNR
f
IN
= 39.9MHz (Note 1) 59
dB
f
IN
= 7.492MHz 56.6 59.4
f
IN
= 19.943MHz 56.2 59
Signal-to-Noise + Distortion
(Up to 5th Harmonic)
SINAD
f
IN
= 39.9MHz (Note 1) 58.5
dB
f
IN
= 7.492MHz 65 74
f
IN
= 19.943MHz 63 73
Spurious-Free Dynamic
Range
SFDR
f
IN
= 39.9MHz (Note 1) 71
dBc
MAX1446
10-Bit, 60Msps, 3.0V, Low-Power
ADC with Internal Reference
_______________________________________________________________________________________ 3
ELECTRICAL CHARACTERISTICS (continued)
(V
DD
= 3.0V, OV
DD
= 2.7V; 0.1µF and 1.0µF capacitors from REFP, REFN, and COM to GND; V
REFIN
= 2.048V, REFOUT connected
to REFIN through a 10kΩ resistor, V
IN
= 2V
P-P
(differential with respect to COM), C
L
≈ 10pF at digital outputs, f
CLK
= 62.5MHz
(50% duty cycle), T
A
= T
MIN
to T
MAX
, unless otherwise noted. ≥+25°C guaranteed by production test, < +25°C guaranteed by design
and characterization. Typical values are at T
A
= +25°C.)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
f
IN
= 7.492MHz -74
f
IN
= 19.943MHz -73Third-Harmonic Distortion HD3
f
IN
= 39.9MHz (Note 1) -71
dBc
Two-Tone Intermodulation
Distortion
IMD
TT
f
1
= 19MHz at -6.5dBFS,
f
2
= 21MHz at -6.5dBFS (Note 2)
-75 dBc
Third-Order Intermodulation
Distortion
IM3
f
1
= 19MHz at -6.5dBFS
f
2
= 21MHz at -6.5dBFS (Note 2)
-75 dBc
f
IN
= 7.492MHz -70 -64
f
IN
= 19.943MHz -70 -63
Total Harmonic Distortion
(First 5 Harmonics)
THD
f
IN
= 39.9MHz (Note 1) -69
dBc
Small-Signal Bandwidth Input at -20dBFS, differential inputs 500 MHz
Full-Power Bandwidth FPBW Input at -0.5dBFS, differential inputs 400 MHz
Aperture Delay t
AD
1ns
Aperture Jitter t
AJ
2 psrms
Overdrive Recovery Time For 1.5 × full-scale input 2 ns
Differential Gain ±1%
Differential Phase ±0.25 °
Output Noise IN+ = IN- = COM 0.2 LSBrms
INTERNAL REFERENCE
Reference Output Voltage REFOUT
2.048
±1%
V
Reference Temperature
Coefficient
TC
REF
60 ppm/°C
Load Regulation 1.25 mV/mA
BUFFERED EXTERNAL REFERENCE (V
REFIN
= 2.048V)
REFIN Input Voltage V
REFIN
2.048
P osi ti ve Refer ence Outp ut V ol tag eV
REFP
2.012 V
N eg ati ve Refer ence Outp ut
V ol tag e
V
REFN
0.988 V
Common-Mode Level V
COM
V
DD
/2 V
Differential Reference Output
Voltage Range
ΔV
REF
ΔV
REF
= V
REFP
- V
REFN
, T
A
≥ +25°C 0.98 1.024 1.07 V
REFIN Resistance R
REFIN
> 50 MΩ
Maximum REFP, COM Source
Current
I
SOURCE
5mA
Maximum REFP, COM Sink
Current
I
SINK
-250 µA
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P20

MAX1446GHJ+

Mfr. #:
Buy MAX1446GHJ+
Manufacturer:
Maxim Integrated
Description:
Analog to Digital Converters - ADC 10-Bit 60Msps 3V High Speed ADC
Lifecycle:
New from this manufacturer.
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