LTC6990CDCB-PBF LINER [Linear Technology], LTC6990CDCB-PBF Datasheet - Page 23

• Manufacturer Part Number: LTC6990CDCB-PBF
• Description: TimerBlox: Voltage Controlled Silicon Oscillator
• Manufacturer: LINER [Linear Technology]

TYPICAL APPLICATIONS
Direct Piezo Alarm Driver. Adjust Frequency for Maximum Alarm Sound Pressure
24V
V
ALARM
R
787k
R
10.7k
A
B
Speaker Alarm. Modulate Tone with R
400mV
RAMP
400mV 1
STEP
Overvoltage Detector/Alarm. Direct Drive of Piezo Alarm
+
–
LT6703-3
R
R
5V
OFF
ON
A
B
R
(Maximum Annoyance for Best Effect)
VCO
30V
5V
97.6k
5V
100k
392k
392k
10k
OE
GND
SET
OE
GND
SET
OE
GND
SET
LTC6990
LTC6990
LTC6990
6990 TA05
6990 TA07
6990 TA06
OUT
OUT
OUT
DIV
DIV
DIV
VCO
V
V
V
+
+
+
within 500Hz to 8kHz Span
20k
1M
887k
1M
523k
1M
523k
5V
5V
5V
IN4004
50k
PIEZO ALARM
MURATA
PKM29-340
f = 4kHz
PIEZO ALARM
4kHz
MURATA
PKM29-3A0
5V
2N2222
8Ω
LTC6990
23
6990p