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Overview
| Topology | Other Topology |
| IC revision | E1 |
Description
This reference design provides a way of generating alarms similar to as described in the IEC60601-1-8 standard for medical devices. The critical timing parameters are programmable through firmware. All parameters, including pulse width, pulse rate, internal frequency, pulse rise time, volume control, and priority, are controlled using firmware. The analog envelope is generated by a combination of the MSP430FR2311 and analog circuitry.
Features
- Provides a mechanism to generate auditory alarm tones with programmable timing and frequency
- Outputs low-, medium-, and high-priority alarms with software-adjustable rise/fall time, pulse duration, pulse spacing, and burst spacing
- Adjustable volume control
- Powered by USB port on PC
- Outputs 8 different alarm melodies
- Coincidence detector confirms if speaker is outputting correct sound
Typical applications
- Wireless or Cellular Handsets and PDAs
More information
Products
Order Code | Datasheet | Simulation | Downloads | Status | Product series | Pins | Mount | L(mm) | H(mm) | IR(A) | Working Voltage(V (AC)) | Operating Temperature | Z @ 100 MHz(Ω) | Zmax(Ω) | Test Condition Zmax | IR 2(mA) | RDC max.(Ω) | Type | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | WR-PHD Pin Header - Single, 2, THT | Simulation– | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWR-PHD Pin Header - Single | Pins2 | MountTHT | Length5.08 mm | – | Rated Current3 A | Working Voltage250 V (AC) | Operating Temperature -40 °C up to +105 °C | – | – | – | – | – | TypeStraight | |||
 | WE-CBF SMT EMI Suppression Ferrite Bead, –, SMT | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-CBF SMT EMI Suppression Ferrite Bead | – | MountSMT | Length2 mm | Height0.9 mm | Rated Current0.8 A | – | Operating Temperature -55 °C up to +125 °C | Impedance @ 100 MHz1000 Ω | Maximum Impedance1000 Ω | Maximum Impedance100 MHz | Rated Current 21000 mA | DC Resistance0.3 Ω | TypeHigh Current |