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TC3400 Datasheet(PDF) 1 Page - Microchip Technology

No. de Pieza. TC3400
Descripción  1.8V, Low Power, 16-Bit Sigma-Delta A/D Converter
Descarga  16 Pages
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Fabricante  MICROCHIP [Microchip Technology]
Página de inicio  http://www.microchip.com
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TC3400 Datasheet(HTML) 1 Page - Microchip Technology

 
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© 2002 Microchip Technology Inc.
DS21409B-page 1
TC3400
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
260
µA; Sleep: 0.75µA
• microPort™ Serial Bus Requires only two
Interface Lines
• Uses Internal or External Reference
• Automatically Enters Sleep Mode when not in use
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 TC3400 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 TC3400 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.
The TC3400’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.
TheTC3400isavailable ina8-Pin PDIP anda8-Pin
SOIC package.
Part Number
Package
Temperature
Range
TC3400VPA
8-Pin PDIP (Narrow)
0
°Cto +85°C
TC3400VOA
8-Pin SOIC (Narrow)
0
°Cto +85°C
IN-
REFIN
IN+
1
2
3
4
8
7
6
5
TC3400
8-Pin SOIC
8-Pin PDIP
GND
SDAT
SCLK
REFOUT
VDD
IN-
REFIN
IN+
1
2
3
4
8
7
6
5
TC3400
GND
SDAT
SCLK
REFOUT
VDD
+1.8V, Low Power, 16-Bit Sigma-Delta A/D Converter


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