|
|
|
MAX1447, MAX1496, MAX1498
3.5- and 4.5-Digit, Single-Chip ADCs with LED Drivers
|
Status
Active: In Production.
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.
|
|
Data Sheet
|
Key Features
- 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)
|
|
Applications/Uses
- Digital Multimeters
- Digital Panel Meters
- Digital Voltmeters
- Handheld meters
|
|
|
|
Key Specifications:
| Display-Oriented ADCs |
| Part Number |
Resolution
(±Counts) |
Conv. Rate
(ksps) |
Data Bus
(bits) |
Diff/S.E. Input |
Internal VREF
(V) |
External VREF
(V) |
External VREF
(V) |
Bipolar VIN
(±V) |
INL
(±LSB) |
Package/Pins |
Budgetary Price |
| max |
nominal |
min |
max |
max |
See Notes |
| MAX1447 |
20000 |
0.005 |
7-Segment |
Diff. Only |
2.048 |
0 |
2.048 |
2 |
1 |
|
$8.49 @1k |
| MAX1496 |
2000 |
|
$5.45 @1k |
| MAX1498 |
20000 |
|
$8.49 @1k |
|
See All Display-Oriented ADCs (33)
|
Pricing 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.
|
|
Diagram
Pin Configuration
Application Notes
Product Guides
Reliability Reports
| Show FIT data for: |
|
| Request Reliability Report for: |
|
Software/Models
Ordering Information
|
Part Number
|
Free
Sample |
Buy |
Status
|
Package:
TYPE PINS FOOTPRINT
DRAWING CODE/VAR *
|
Temp |
RoHS/Lead-Free?
Materials Analysis
|
| MAX1447ECJ
|
|
|
Active |
LQFP;32 pin;82.8 mm²
Outline Drawing:21-0054 (PDF)
Land Pattern: 90-0111 (PDF)
Use pkgcode/variation: C32-2*
|
-40°C to +85°C
|
See data sheet
|
| MAX1447ECJ+
|
|
|
Active |
LQFP;32 pin;82.8 mm²
Outline Drawing:21-0054 (PDF)
Land Pattern: 90-0111 (PDF)
Use pkgcode/variation: C32+2*
|
-40°C to +85°C
|
RoHS/Lead-Free: Lead Free
Materials Analysis |
| MAX1447ECJ+T
|
|
|
Active |
LQFP;32 pin
Land Pattern: Not Available
|
-40°C to +85°C
|
See data sheet
|
| MAX1447ECJ-T
|
|
|
Active |
LQFP;32 pin
Land Pattern: Not Available
|
-40°C to +85°C
|
See data sheet
|
| MAX1496EAI
|
|
|
Active |
SSOP;28 pin;81.6 mm²
Outline Drawing:21-0056 (PDF)
Land Pattern: 90-0095 (PDF)
Use pkgcode/variation: A28-1*
|
-40°C to +85°C
|
RoHS/Lead-Free: No
Materials Analysis |
| MAX1496EAI+
|
|
|
Active |
SSOP;28 pin;81.6 mm²
Outline Drawing:21-0056 (PDF)
Land Pattern: 90-0095 (PDF)
Use pkgcode/variation: A28+1*
|
-40°C to +85°C
|
RoHS/Lead-Free: Lead Free
Materials Analysis |
| MAX1496EAI+T
|
|
|
Active |
SSOP;28 pin
Land Pattern: Not Available
|
-40°C to +85°C
|
See data sheet
|
| MAX1496EAI-T
|
|
|
Active |
SSOP;28 pin
Land Pattern: Not Available
|
-40°C to +85°C
|
See data sheet
|
| MAX1496EPI
|
|
|
Active |
PDIP(W);28 pin;592.6 mm²
Outline Drawing:21-0044 (PDF)
Land Pattern: Not Applicable
Use pkgcode/variation: P28-3*
|
-40°C to +85°C
|
RoHS/Lead-Free: No
Materials Analysis |
| MAX1496EPI+
|
|
|
Active |
PDIP(W);28 pin;592.6 mm²
Outline Drawing:21-0044 (PDF)
Land Pattern: Not Applicable
Use pkgcode/variation: P28+3*
|
-40°C to +85°C
|
RoHS/Lead-Free: Lead Free
Materials Analysis |
|
Part Number
|
Free
Sample |
Buy |
Status
|
Package:
TYPE PINS FOOTPRINT
DRAWING CODE/VAR *
|
Temp |
RoHS/Lead-Free?
Materials Analysis
|
| MAX1498ECJ
|
|
|
Active |
LQFP;32 pin;82.8 mm²
Outline Drawing:21-0054 (PDF)
Land Pattern: 90-0111 (PDF)
Use pkgcode/variation: C32-2*
|
-40°C to +85°C
|
See data sheet
|
| MAX1498ECJ+
|
|
|
Active |
LQFP;32 pin;82.8 mm²
Outline Drawing:21-0054 (PDF)
Land Pattern: 90-0111 (PDF)
Use pkgcode/variation: C32+2*
|
-40°C to +85°C
|
RoHS/Lead-Free: Lead Free
Materials Analysis |
| MAX1498ECJ+T
|
|
|
Active |
LQFP;32 pin;82.8 mm²
Outline Drawing:21-0054 (PDF)
Land Pattern: 90-0111 (PDF)
Use pkgcode/variation: C32+2*
|
-40°C to +85°C
|
RoHS/Lead-Free: Lead Free
Materials Analysis |
| MAX1498ECJ-T
|
|
|
Active |
LQFP;32 pin
Land Pattern: Not Available
|
-40°C to +85°C
|
See data sheet
|
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; -D = drypack; -U/+U on DS parts = cut tape. More: See Full Data Sheet or Maxim Product 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.
|
Similar Products by Function
Didn't Find What You Need?
Information Index
Document Ref.: 19-3166
Rev 0;
2004-03-29
This page last modified: 2009-10-12
|
|
|
Download
E-Mail