Product Summary

The LM1812N is a general purpose ultrasonic transceiver designed for use in a variety of ranging, sensing, and communications applications. The LM1812N contains a pulse-modulated class C transmitter, a high gain receiver, a pulse modulation detector, and noise rejection circuitry.

Parametrics

LM1812N absolute maximum ratings: (1)supply voltage: 18V; (2)power dissipation: 1700mW; (3)Peak current: 1A; (4)Input current: 50mA; (5)Operating temperature: 0℃ to + 70℃; (6)storage temperature range: -65℃ to + 150℃; (7)lead temperature: 260℃.

Features

LM1812N features: (1)one or two-transducer operation; (2)transducers interchangeable without realignment; (3)no external transistors; (4)impulse noise rejection; (5)no heat sinking; (6)protection circuitry included; (7)detector output drivers 1A peak load; (8)ranges in excess of 100 feet in water, 20 feet in air; (9)12W peak transmit power.

Diagrams

LM1812N package dimensions

LM1812
LM1812
Other

Data Sheet
Negotiable 
LM1815
LM1815
Other

Data Sheet
Negotiable 
LM1815M
LM1815M
National Semiconductor (TI)
Special Purpose Amplifiers
Data Sheet
0-275: $1.36
275-550: $1.22
550-1045: $0.97
1045-5005: $0.94
LM1815M/NOPB
LM1815M/NOPB
National Semiconductor (TI)
Special Purpose Amplifiers ADAPTIVE VARIABLE RELUCTANCE SENSR AMP
Data Sheet
0-1: $2.05
1-25: $1.65
25-100: $1.50
100-250: $1.36
LM1815MX
LM1815MX
National Semiconductor (TI)
Special Purpose Amplifiers
Data Sheet
0-2500: $0.97
2500-5000: $0.94
LM1815MX/NOPB
LM1815MX/NOPB
National Semiconductor (TI)
Special Purpose Amplifiers
Data Sheet
0-1890: $0.97
1890-2500: $0.97
2500-5000: $0.94