ALC109 Datasheet PDF - Apex MediTech

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ALC109
Apex MediTech

Part Number ALC109
Description ALARM SYSTEM
Page 6 Pages


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Apex MediTech
ALC109 ALARM SYSTEM
PRIORITY ENCODED ALARM SYSTEM FOR MEDICAL DEVICES
Rev. 04 — 28 November 2013
Product data sheet
1. General description
The ALC109 is a hybrid priority encoded audio alarm, available in low cost packages, based on a high
performance architecture that executes instructions quickly. Many functions have been incorporated into
the ALC109 in order to reduce component count, board space, and system cost. The audio quality is
maintained by ensuring at least four harmonics.
2. Features
Two BCD inputs to select the priority
Strobe to trigger the alarm
Three priority encoded alarms, HIGH, MEDIUM, LOW and also a general purpose alarm.
Inbuilt high performance audio power amplifier
Drives 8speaker directly. No other external components required
Operates on single 5V supply
Low standby current
Simple modified polarized 28-pin DIP footprint
3. Ordering information
Type number
Package
ALC109
28-pin DIPMP
Description
Version
Hybrid carrier, 18 1.9
leads
Packing
information
25 pcs.
1
Product data sheet ALC109
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4. Block diagram
5. Pinning information
2
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6. Pin description
Symbol
VDD
VSS
STROBE
Pin
1
2-4
10-12
13
14
15
16
B 17
A 18
I = Input, O = Output, NC = No connection
* No connection pins should be left unconnected
Type
Supply
NC *
NC *
Supply
NC *
I
NC *
I
I
7. Logic table
A
0
1
0
1
B
0
0
1
1
Description
VDD
No connection
No connection
VSS
No connection
Strobe to trigger the
alarm set by the A, B
and C inputs
No connection
Input B
Input A
Priority
HIGH
MEDIUM
LOW
GENERAL
3
Product data sheet ALC109
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8. Timing diagram
9. Electrical and timing characteristics
VDD = 4.8 V to 5.2 V unless otherwise specified.
Tamb = 10 °C to +45 °C
Symbol
VDD
IDD(oper)
IDD(idle)
VSIG
Tamb
Ts
Th
Parameter
Supply voltage [1]
Operating supply current
Idle mode supply current
Signal input voltage [2]
Ambient temperature
Strobe delay
HOLD time
Min Typ Max
4.8 5.0 5.2
- 820 -
- 19 -
- 3.3 3.5
10 - 45
30 -
-
- 2000 -
[1] A Nominal Supply Voltage to the circuit is 5 V DC.
[2] The BCD signals A & B and the STROBE are not 5V compliant pins. The Nominal Signal Voltage is 3.3V DC.
Unit
V DC
mA
mA
V DC
°C
µS
mS
4
Product data sheet ALC109
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