LTC5564

7

5564f

PIN FUNCTIONS

RFIN (Pin 1): RF Input Voltage. A coupling capacitor must

be used to connect to the RF signal source. This pin has

an internal 250Ω termination, an internal Schottky diode

detector and an internal 8pF reservoir capacitor.

NC (Pins 2, 9, 16): No Connect. These pins should be left

unconnected by the user for best RF performance.

GND (Pins 3, 4, Exposed Pad Pin 17): These pins should

be tied to system ground. See Applications Information

for best practices.

latched when LEN is high and transparent when LEN is low.

quiescent output offset value. See the Applications Infor-

mation section for adjustment range.

G0, G1 (Pins 7, 8): Amplifier Gain Selection. Logic low or

high levels on the G0 and G1 pins will change the internal

amplifier gain, bandwidth and slew rate characteristics. See

the Applications Information section for gain setting codes.

ternal reference voltage to this pin.

Figure 1. Simplified Block Diagram

SIMPLIFIED BLOCK DIAGRAM

RFIN

8pF

250Ω

1.2k

1.6k

1.7k

200Ω

200Ω

80μA

LEN

+

–

+

–

G1

PINS 3, 4,

EXPOSED PAD PIN 17

G0

5564 F01

PROGRAMMABLE

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