ADA4858-3 used as a PIN diode driver circuit

Posted on Mar 28, 2007

The figure can add a buffer gate at the input, so that the circuit compatible with TTL or other logic. This request is to TTL0V circuit to 3.5V input signal swing to

ADA4858-3 used as a PIN diode driver circuit
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a complementary -1.5V to + 3.5V swing for driving PIN diodes. R1, R2, R3 and U1C formed -1.5V reference voltage of the circuit, the internal negative voltage CPO produced by the internal charge pump. The charge pump capacitors C3 and C4 are necessary for the work.

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