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LTC2991 View Datasheet(PDF) - Linear Technology

Part Name
Description
MFG CO.
'LTC2991' PDF : 32 Pages View PDF
TYPICAL APPLICATIONS
Liquid Level Indicator
3.3V
LTC2991
3.3V
TAMBIENT
VCC
V1
µC
SDA
V2
SCL LTC2991
ADR0
V3
ADR1
ADR2
V4
GND V5 TO V8
4
HEATER ENABLE
2 SECOND PULSE
OTHER APPS
CONTROL REGISTER 0x06 = 0xAA
TAMBIENT
TDRY
TWET
VCC
REG 1A, 1B:
REG 0A, 0B:
REG 0C, 0D:
REG 1C, 1D:
0.0625°C/LSB
0.0625°C/LSB
0.0625°C/LSB
2.5V + 305.18µV/LSB
SENSOR HI*
HEATER ENABLE
SENSOR LO*
SENSOR HI
SENSOR LO
NDS351AN
T = ~2.0°C pp, SENSOR HI
~0.2°C pp, SENSOR LO
*HEATER: 75Ω 0.125W
*SENSOR MMBT3904, DIODE CONNECTED
2991 TA09
Wind Direction/Instrumentation
3.3V
VCC V1
V2
MMBT3904 3.3V MMBT3904
µC
SDA
V3
SCL LTC2991
ADR0
ADR1
V4
ADR2
GND V5 TO V8
TAMBIENT
4
OTHER APPS
HEATER ENABLE
2 SECOND PULSE
HEATER
75Ω
0.125W
2N7002
2991 TA10
CONTROL REGISTER 0x06 0xAA
TAMBIENT
TR1
REG 1A, 1B 0.0625°C/LSB
REG 0A, 0B 0.0625°C/LSB
TR2
REG 0E, 0F 0.0625°C/LSB
VCC
REG 1C, 1D 2.5V + 305.18µV/LSB
For more information www.linear.com/LTC2991
2991ff
27
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