TDA0161FP STMicroelectronics, TDA0161FP Datasheet - Page 5

• Manufacturer Part Number: TDA0161FP
• Description: IC PROXIMITY DETECTOR 8 SOIC
• Manufacturer: STMicroelectronics
• Type: Proximity Detectorr

Specifications of TDA0161FP

• Current - Supply: 12mA
• Mounting Type: Surface Mount
• Package / Case: 8-SOIC (3.9mm Width)
• For Use With: 497-8398 - BOARD DEMO PROXIMITY DET TDA0161497-6455 - BOARD EVAL BASED ON TDA0161
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Output Type: -
• Interface: -
• Input Type: -
• Other names: 497-2159-5

If the circuit is used at frequency higher than 3MHz, it is recommended to connect a capacitor of 100pF between pins 7 and 6
TDA0161
3
Figure 2.
I
I
cc
cc
(remote)
(close)
Operating Mode
Between pins 3 and 7, the integrated circuit acts like a negative resistor with a value equal to
that of the external resistor R1 (connected between pins 2 and 4). The oscillation stops when
the tuned circuit loss resistance (Rp) becomes smaller than R1. As a result, I
(pins 1 and 6). The oscillation is sustained when Rp is higher than R1, and I
(pins 1 and 6). Eddy currents induced by coil L1 in a metallic body determine the value of Rp.
Electrical Scheme
CC
CC
(remote) = 1mA
3 Operating Mode
(close) = 10mA
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