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TC3403 Datasheet(PDF) 1 Page - Microchip Technology

No. de Pieza. TC3403
Descripción  1.8V Low Power, Quad Input, 16-Bit Sigma-Delta A/D Converter with a Power Fault Monitor and Microprocessor Reset Circuit
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Fabricante  MICROCHIP [Microchip Technology]
Página de inicio  http://www.microchip.com
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TC3403 Datasheet(HTML) 1 Page - Microchip Technology

 
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© 2005 Microchip Technology Inc.
DS21412C-page 1
TC3403
Features
• 16-bit Resolution at Eight Conversions Per
Second, Adjustable Down to 10-bit Resolution at
512 Conversions Per Second
• 1.8V – 5.5V Operation, Low Power Operating
280
μA; Sleep: 93μA
• Four Single-ended Inputs with Built-in Multiplexer
• microPort™ Serial Bus Requires only two
Interface Lines
• Uses Internal or External Reference
• Automatically Enters Sleep Mode when not in use
•VDD Monitor and Reset Generator Operational in
Shutdown Mode
• Early Warning Power Fail Detector, also suitable as
Wake-Up Timer Operational in Shutdown Mode
Applications
• Consumer Electronics, Thermostats, CO
Monitors, Humidity Meters, Security Sensors
• Embedded Systems, Data Loggers,
Portable Equipment
• Medical Instruments
Device Selection Table
Package Type
General Description
The TC3403 is a low cost, low power analog-to-digital
converter based on Microchip’s Sigma-Delta technol-
ogy. It will perform 16-bit conversions (15-bit plus sign)
at up to eight per second. The TC3403 is optimized for
use as a microcontroller peripheral in low cost, battery
operated systems. A voltage reference is included, or
an external reference can be used. A VDD monitor with
a reset generator provides Power-on Reset and Brown-
out protection while an extra threshold detector is
suitable for use as an early warning Power Fail
detector, or as a Wake-up Timer.
The TC3403’s 2-wire microPort™ digital interface is
used for starting conversions and for reading out the
data. Driving the SCLK line low starts a conversion.
After the conversion starts, each additional falling edge
(up to six) detected on SCLK for t4 seconds reduces
the A/D resolution by one bit and cuts conversion time
in half. After a conversion is completed, clocking the
SCLK line puts the MSB through LSB of the resulting
data word onto the SDAT line, much like a shift register.
The part automatically sleeps when not performing a
data conversion.
The TC3403 is available in a 16-Pin PDIP and a 16-Pin
QSOP package.
Part
Number
Package
Temperature
Range
TC3403VPE
16-Pin PDIP (Narrow)
0
°C to +85°C
TC3403VQR
16-Pin QSOP Narrow)
0
°C to +85°C
16-Pin PDIP
16-Pin QSOP
1
16
215
314
413
512
611
710
IN4+
89
IN1+
IN2+
VTH
REFIN
GND
A0
V
DD
PFO
SDAT
REFOUT
IN3+
TC3403
SCLK
PFI
RESET
A1
+1.8V Low Power, Quad Input, 16-Bit Sigma-Delta A/D Converter
with a Power Fault Monitor and Microprocessor Reset Circuit
Obsolete Device


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