1FEATURES
2• Eight Selectable Analog Input Channels
• Analog Full-Scale Input Range 0V to VDD
• Typical Accuracy of 2 mV at Maximum VDD
• Very Low Power Operation
• Small Package Footprint in 16-Lead, 5 x 5 x 0.8
mm WSON
• Single +2.7V to +5.5V Supply Operation
• IEEE 1149.1 (JTAG) Compliant Interface

APPLICATIONS
• Measurement of Point Voltages
• Real-time Signal Monitoring
• System Health Monitoring and Prognostics
• Debug, Environmental Test, Production Test,
Field Service
• Supplement In-Circuit Tester (ICT) Access
• Vital in Servers, Computing,
Telecommunication and Industrial Equipment
• Essential in Medical, Data Storage, and
Networking Equipment

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
prognostics 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 measurement, 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 WSON 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.