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PDF SCANSTA476 Data sheet ( Hoja de datos )
| Número de pieza | SCANSTA476 | |
| Descripción | Eight Input IEEE 1149.1 Analog Voltage Monitor | |
| Fabricantes | National Semiconductor | |
| Logotipo |  |
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April 2005
SCANSTA476
Eight Input IEEE 1149.1 Analog Voltage Monitor
General Description
The SCANSTA476 is a low power, Analog Voltage Monitor
used for sampling or monitoring up to 8 analog/mixed-signal
input channels. Analog Voltage Monitors are valuable during
product development, environmental test, production, and
field service for verifying and monitoring power supply and
reference voltages. In a supervisory role, the ’STA476 is
useful for card or system-level health monitoring and prog-
nostics applications.
Instead of requiring an external microcontroller with a GPIO
interface, the ’STA476 features a common IEEE 1149.1
(JTAG) interface to select the analog input, initiate a mea-
surement, and access the results - further extending the
capabilities of an existing JTAG infrastructure.
The SCANSTA476 uses the VREF input as a reference. This
enables the SCANSTA476 to operate with a full-scale input
range of 0 to VDD, which can range from +2.7V to +5.5V.
The SCANSTA476 is packaged in a 16-lead non-pullback
LLP package that provides an extremely small footprint for
applications where space is a critical consideration. This
product operates over the industrial temperature range of
−40˚C to +85˚C.
Features
n Eight selectable Analog input channels
n Analog full-scale input range 0V to VDD
n Typical accuracy of 2 mV at maximum VDD
n Very low power operation
n Small package footprint in 16-lead, 5 x 5 x 0.8 mm LLP
n Single +2.7V to +5.5V supply operation
n IEEE 1149.1 (JTAG) compliant interface
Applications
n Measurement of Point Voltages
n Real-time Signal Monitoring
n System Health Monitoring and Prognostics
n Debug, Environmental Test, Production Test, Field
Service
n Supplement In-Circuit Tester (ICT) access
n Vital in Servers, Computing, Telecommunication and
Industrial equipment
n Essential in Medical, Data Storage, and Networking
equipment
Block Diagram
© 2005 National Semiconductor Corporation DS200835
20083521
www.national.com
1 page  
5 www.national.com
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| Páginas | Total 7 Páginas | |
| PDF Descargar | [ Datasheet SCANSTA476.PDF ] | |
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