MAXIM MAX1449 10-Bit, 105Msps, Single 3.3V, Low-Power ADC with Internal Reference
Summary
A high-speed, low-power Analog-to-Digital Converter (ADC) designed for demanding signal digitization applications. This component features 10-bit resolution at 105 Msps, making it ideal for reliable operation in imaging systems, set-top boxes, and complex digital communications. The accompanying manual provides detailed electrical specifications, operational guidelines, and integration details, serving professional engineers responsible for developing advanced test equipment or critical signal processing devices across various industrial sectors.
Page 1 Text Content
19-4802; Rev 2; 9/04
EVALUATION KIT AVAILABLE
10-Bit, 105Msps, Single 3.3V, Low-Power
ADC with Internal Reference
General Description Features
The MAX1449 3.3V, 10-bit analog-to-digital converter Single 3.3V Operation (ADC) features a fully differential input, a pipelined 10-
Excellent Dynamic Performance
stage ADC architecture with wideband track-and-hold
(T/H), and digital error correction incorporating a fully dif- 58.5d B SNR at f IN = 20MHz ferential signal path. The ADC is optimized for low- 72d Bc SFDR at f IN = 20MHz
power, high-dynamic performance in imaging and digital
Low Power
communications applications. The converter operates
62m A (Normal Operation)
from a single 2.7V to 3.6V supply, consuming only
5µA (Shutdown Mode)
186m W while delivering a 58.5d B (typ) signal-to-noise ratio (SNR) at a 20MHz input frequency. The fully differ- Fully Differential Analog Input ential input stage has a -3d B 400MHz bandwidth and
Wide 2Vp-p Differential Input Voltage Range
may be operated with single-ended inputs. In addition to low operating power, the MAX1449 features a 5µA 400MHz -3d B Input Bandwidth power-down mode for idle periods.
On-Chip 2.048V Precision Bandgap Reference
An internal 2.048V precision bandgap reference is
used to set the ADC’s full-scale range. A flexible refer- CMOS-Compatible Three-State Outputs
ence structure allow’s the user to supply a buffered,
32-Pin TQFP Package
direct, or externally derived reference for applications
requiring increased accuracy or a different input volt- Evaluation Kit Available (MAX1448 EV Kit)
age range.
Lower speed, pin-compatible versions of the MAX1449 Ordering Information
are also available. Refer to the MAX1444 data sheet for
PART TEMP RANGE PIN-PACKAGE
a 40Msps version, the MAX1446 data sheet for a
MAX1449EHJ -40°C to +85°C 32 TQFP
60Msps version, and the MAX1448 data sheet for 80Msps. The MAX1449 has parallel, offset binary, CMOS-com-
Pin-Compatible, Lower Speed
patible, three-state outputs that can be operated from 1.7V to 3.6V to allow flexible interfacing. The device is Selection Table available in a 5mm x 5mm 32-pin TQFP package and is
PART SAMPLING SPEED (Msps)
specified over the extended industrial (-40°C to +85°C) temperature range. MAX1444
MAX1446 MAX1448
________________________Applications Ultrasound Imaging
Functional Diagram
CCD Imaging Baseband and IF Digitization
MAX1449
Digital Set-Top Boxes
CONTROL GND
Video Digitizing Applications
OUTPUT
T/H PIPELINE ADC D9–D0
DRIVERS
REF SYSTEM +
PD REF
BIAS OGND
Pin Configuration appears at end of data sheet.
REFINREFOUT REFP COM REFN OE
Maxim Integrated Products
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.
Page Summary Contents For MAXIM MAX1449 10-Bit, 105Msps, Single 3.3V, Low-Power ADC with Internal Reference
Manual Details
| Brand | ADC |
|---|---|
| Pages | 21 |
| File Size | 358.28 KB |
| Published | May 13, 2026 |
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Frequently Asked Questions
What is the ADC's power consumption in normal and shutdown modes?
In normal operation, it consumes 62mA; however, in shutdown mode, it only uses 5µA.
Are there lower speed, pin-compatible versions of this MAX1449?
Yes, models such as the MAX1444 (40Msps), MAX1446 (60Msps), and MAX1448 (80Msps) are available.
How can I set or modify the ADC's full-scale range for my application?
The device uses an internal 2.048V reference, but users can supply a buffered, direct, or externally derived reference.
What is the bandwidth and general voltage range of the differential analog input?
The fully differential input stage has a -3dB 400MHz bandwidth and supports a wide 2Vp-p differential input voltage range.