LTC6990 Linear Technology, LTC6990 Datasheet - Page 25

• Manufacturer Part Number: LTC6990
• Description: TimerBlox: Voltage Controlled Silicon Oscillator
• Manufacturer: Linear Technology

TYPICAL APPLICATIONS
Light to Frequency Converter. f
Full Range Temperature to Frequency Converter. 16kHz to 1kHz from –20°C to 80°C
22k AT 25°C
B = 3964
22k AT 25°C
B = 3964
3% Linearity from –20°C (f
I
PD
+
SFH213
THERMISTOR: VISHAY NTHS120601N2202J
10k
+
Temperature to Frequency Converter.
26k
21.5k
60.4k
OUT
–
+
–
+
1000pF
LT1490
LT1677
24.9k
10k
≈ –1.4kHz per Microampere of Photo Diode Current, I
5V
THERMISTOR: VISHAY NTHS120601N2202J
5V
5V
OE
GND
SET
OUT
LTC6990
26k
≈ 20kHz) to 75°C (f
6990 TA10
100k
222k
OUT
DIV
V
+
5V
5V
619k
f
OUT
OE
GND
SET
OE
GND
SET
1M
523k
LTC6990
LTC6990
5V
OUT
6990 TA11
6990 TA12
OUT
OUT
DIV
DIV
V
V
+
+
≈ 25kHz)
f
f
OUT
OUT
1M
681k
187k
1M
5V
5V
PD
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LTC6990
25
6990p