MAX1449 10-Bit, 105Msps, Single +3.3V, Low-Power ADC with Internal Reference

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The MAX1449 3.3V, 10-bit analog-to-digital converter (ADC) features a fully differential input, a pipelined 10-stage ADC architecture with wideband track-and-hold (T/H), and digital error correction incorporating a fully differential signal path. The ADC is optimized for lowpower, high-dynamic performance in imaging and digital communications applications. The converter operates from a single 2.7V to 3.6V supply, consuming only 186mW while delivering a 58.5dB (typ) signal-to-noise ratio (SNR) at a 20MHz input frequency. The fully differential input stage has a -3dB 400MHz bandwidth and may be operated with single-ended inputs. In addition to low operating power, the MAX1449 features a 5µA power-down mode for idle periods.

An internal 2.048V precision bandgap reference is used to set the ADC's 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.

See a parametric table of the complete family of pin-compatible, 10-bit high-speed ADCs.

The MAX1449 has parallel, offset binary, CMOS-compatible, three-state outputs that can be operated from 1.7V to 3.6V 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) temperature range.

Key Features

Applications/Uses

Single 3.3V Operation
Excellent Dynamic Performance
- 58.5dB SNR at f_IN = 20MHz
- 72dBc SFDR at f_IN = 20MHz
Low Power
- 62mA (Normal Operation)
- 5µA (Shutdown Mode)
Fully Differential Analog Input
Wide 2V_P-P Differential Input Voltage Range
400MHz -3dB Input Bandwidth
On-Chip 2.048V Precision Bandgap Reference
CMOS-Compatible Three-State Outputs
32-Pin TQFP Package
Evaluation Kit Available (MAX1448 EV Kit)

	Baseband and IF Digitization
	CCD Imaging
	Digital Set-Top Boxes
	Ultrasound Imaging
	Video Digitizing Applications

Key Specifications: High-Speed ADCs (> 5Msps)

Part Number

Resolution (Bits)

Sample Rate (max) (Msps)

AC Specs @ f_IN (MHz)

SFDR (dBc)

ENOB (bits)

SINAD (dB)

SNR (dB)

THD (db)

INL (±LSB)

DNL (±LSB)

Full-Power BW (MHz)

Typ. Supply Current (mA)

Data Bus Interface

Ref. (V)

Input Channels

Input Range (V)

Supply Voltage (V)

EV-Kit

RoHS Available

Package

Smallest Available Package (max w/pins) (mm²)

Operating Temp. Range (°C)

Price^*

MAX1449

105

9.3

58.5

-70

0.75

0.5

400

µP/10

Ext
Int +2.048

±1.024

2.7
3

Yes

TQFP/32

-40 to +85

$10.70 @ 1k

See All High-Speed ADCs (> 5Msps) (81)

Notes:
^*This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific prices and delivery, please see the price and availability page or contact an authorized distributor.