TIDA-010040
Alarm tone generator reference design
TIDA-010040
Overview
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
Design files & products
Design files
Download ready-to-use system files to speed your design process.
TIDUEJ7.PDF (18122 K)
Reference design overview and verified performance test data
TIDRYE7.PDF (371 K)
Detailed schematic diagram for design layout and components
TIDRYE8.PDF (68 K)
Complete listing of design components, reference designators, and manufacturers/part numbers
TIDRYE9.PDF (198 K)
Detailed overview of design layout for component placement
TIDRYF1.ZIP (2104 K)
Files used for 3D models or 2D drawings of IC components
TIDCF63.ZIP (926 K)
Design file that contains information on physical board layer of design PCB
TIDRYF0.PDF (885 K)
PCB layer plot file used for generating PCB design layout
Products
Includes TI products in the design and potential alternatives.
Analog switches & muxes
TMUX1072 — 5-V, 2:1 (SPDT), 2-channel analog switch with powered-off protection
Data sheetAnalog switches & muxes
TS5A23157 — 5-V, 2:1 (SPDT), 2-channel analog switch
Data sheetComparators
LM393-N — Low Power Low Offset Voltage Dual Comparator
Data sheetGeneral-purpose op amps
TLV9062 — Dual, 5.5-V, 10-MHz operational amplifier
Data sheetLinear & low-dropout (LDO) regulators
TLV704 — 150-mA, 24-V, ultra-low-IQ, low-dropout voltage regulator
Data sheetSpeaker amps
TPA2005D1 — 1.4-W, mono analog input class-d speaker amp with 1.8-V logic compatibility on shutdown pin
Data sheetSpeaker amps
TPA6211A1 — 3.1-W, mono, analog input Class-AB audio amplifier
Data sheetXOR (exclusive OR) gates
SN74AHCT1G86 — Single 2-input, 4.5-V to 5.5-V XOR (exclusive OR) gate with TTL-compatible CMOS inputs
Data sheetStart development
Technical documentation
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| Type | Title | Date | |
|---|---|---|---|
| * | Design guide | Alarm Tone Generator Reference Design | Dec. 21, 2018 |
| More literature | TIDA-010040 Firmware | Mar. 26, 2019 |
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