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Data Sheet

FULL DATA SHEET (PDF, 920kB) Download   E-Mail

Description

The MAX1447/MAX1496/MAX1498 low-power, 3.5- and 4.5-digit, analog-to-digital converters (ADCs) with integrated light-emitting diode (LED) drivers operate from a single 2.7V to 5.25V power supply. They include an internal reference, a high-accuracy on-chip oscillator, and a multiplexed LED display driver. An internal charge pump generates the negative supply needed to power the integrated input buffers for single-supply operation. The ADC is configurable for either a ±2V or ±200mV input range and it outputs its conversion results to an LED. The MAX1496 is a 3.5-digit (±1999 count) device and the MAX1447/MAX1498 are 4.5-digit (±19,999 count) devices. The MAX1447/MAX1496/MAX1498 do not require external precision integrating capacitors, autozero capacitors, crystal oscillators, charge pumps, or other circuitry required with dual-slope ADCs (commonly used in panel meter circuits). These devices also feature on-chip buffers for the differential signal and reference input, allowing direct interface with high-impedance signal sources. In addition, they use continuous internal offset-calibration and offer >100dB rejection of 50Hz and 60Hz line noise. Other features include data hold and peak detection and overrange/underrange detection. The MAX1447 features on-demand enhanced offset calibration for improved offset performance. The MAX1447/MAX1498 are available in a 32-pin, 7mm x 7mm TQFP package and the MAX1496 is available in 28-pin SSOP and 28-pin PDIP packages. All devices in this family operate over the -40°C to +85°C extended temperature range.

Key Features		Applications/Uses
High Resolution MAX1447/MAX1498: 4.5 Digits (±19,999 Count) MAX1496: 3.5 Digits (±1999 Count) Sigma-Delta ADC Architecture No Integrating Capacitors Required No Autozeroing Capacitors Required >100dB of Simultaneous 50Hz and 60Hz Rejection Selectable Input Range of ±200mV or ±2V Selectable Voltage Reference: Internal 2.048V or External Internal High-Accuracy Oscillator Needs No External Components Automatic Offset Calibration On-Demand Enhanced Offset Calibration (MAX1447) Operate from a Single 2.7V to 5.25V Supply Low Power (Exclude LED-Driver Current) Maximum 744µA Operating Current (MAX1496) Maximum 960µA Operating Current (MAX1447/MAX1498) Maximum 325µA Shutdown Current Multiplexed Common-Cathode LED Drivers Resistor-Programmable Segment Current Small 32-Pin, 7mm x 7mm TQFP Package (4.5 Digits), 28-Pin SSOP Package (3.5 Digits) Also Available in a PDIP Package (3.5 Digits)		Digital Multimeters Digital Panel Meters Digital Voltmeters Handheld meters

Application Notes

Application Note 2102: Migrating from Integrating ADC Architectures to Sigma Delta - MAX1496, MAX1498 Application Note 3418: Understanding the Effects of Clock Tolerances on 50/60Hz Noise Rejection in High Performance Sigma Delta ADCs - MAX1447, MAX1496, MAX1498 Application Note 3635: Implementing an External Reference and the Resulting Effect on Gain for the MAX149x Sigma-Delta Panel-Meter ADCs - MAX1447, MAX1496, MAX1498

Evaluation Kits

none

Design Guides

A/D CONVERTERS (PDF)

Reliability Reports

Show FIT data for: MAX1447 MAX1496 MAX1498 Request Reliability Report for: MAX1447 MAX1496 MAX1498

Software/Models

none

Ordering Information
Notes: Other options and links for purchasing parts are listed at: http://www.maxim-ic.com/sales. Didn't Find What You Need? Ask our applications engineers. Expert assistance in finding parts, usually within one business day. Part number suffixes: T or T&R = tape and reel; + = RoHS/lead-free; # = RoHS/lead-exempt. More: SeeFull Data Sheet or Part Naming Conventions. * Some packages have variations, listed on the drawing. "PkgCode/Variation" tells which variation the product uses. Note that "+", "#", "-" in the part number suffix describes RoHS status. Package drawings may show a different suffix character.
Devices: 1-14 of 14
MAX1447	Free Sample	Buy	Package: TYPE PINS FOOTPRINT   DRAWING CODE/VAR *	Temp	RoHS/Lead-Free? Materials Analysis
MAX1447ECJ			LQFP;32 pin; Dwg: 21-0054G (PDF) Use pkgcode/variation: C32-2*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
MAX1447ECJ+			LQFP;32 pin; Dwg: 21-0054G (PDF) Use pkgcode/variation: C32+2*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX1447ECJ+T				-40°C to +85°C	See data sheet
MAX1447ECJ-T				-40°C to +85°C	See data sheet
MAX1496	Free Sample	Buy	Package: TYPE PINS FOOTPRINT   DRAWING CODE/VAR *	Temp	RoHS/Lead-Free? Materials Analysis
MAX1496EPI			PDIP;28 pin; Dwg: 21-0044B (PDF) Use pkgcode/variation: P28-3*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
MAX1496EPI+			PDIP;28 pin; Dwg: 21-0044B (PDF) Use pkgcode/variation: P28+3*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX1496EAI-T				-40°C to +85°C	See data sheet
MAX1496EAI+			SSOP;28 pin; Dwg: 21-0056C (PDF) Use pkgcode/variation: A28+1*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX1496EAI+T				-40°C to +85°C	See data sheet
MAX1496EAI			SSOP;28 pin; Dwg: 21-0056C (PDF) Use pkgcode/variation: A28-1*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
MAX1498	Free Sample	Buy	Package: TYPE PINS FOOTPRINT   DRAWING CODE/VAR *	Temp	RoHS/Lead-Free? Materials Analysis
MAX1498ECJ+			LQFP;32 pin; Dwg: 21-0054G (PDF) Use pkgcode/variation: C32+2*	-40°C to +85°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX1498ECJ-T				-40°C to +85°C	See data sheet
MAX1498ECJ			LQFP;32 pin; Dwg: 21-0054G (PDF) Use pkgcode/variation: C32-2*	-40°C to +85°C	RoHS/Lead-Free: No Materials Analysis
MAX1498ECJ+T				-40°C to +85°C	See data sheet

Related Products

MAX1491, MAX1493, MAX1495 3.5- and 4.5-Digit, Single-Chip ADCs with LCD Drivers

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