ELECTRICAL CHARACTERISTICS (Continued)

OUTPUT SECTION

Symb ol

Parameter

Note

Mi n.

Typ .

Max.

Unit

Supply Current

8

mA

High output voltage

Vp-0.4

Vp

V

Low output volt age

Vn = GNDDRIVE

Vn

Vn+0. 4

V

Rise Time

6

ns

Fall T ime

2

ns

APPLICATION CIRCUIT

A typical application circuit is shown in figure 1. The RF input from the antenna downlead is fed via a

ceramic filter and matching circuit to the RF+,RF- pins. The external LNA in the antenna should have

between 10 and 35dB of amplifier gain, so the noise measured in a one MHz bandwidth should be

-114dBm for kTB in 1 MHz

+ 2dB LNA noise figure

+10/35 dB LNA gain (net)

Total -102/ 77dBm at connector.

Allowing 2dB for filter loss, -104/-79 is available at the matching circuit.

Fig. 1 Typical Application Circuit

STB5600

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