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.