Dynamic Linearity Adjustment

The LNA and loop-out amplifier linearity can be dynam-

ically adjusted by varying the amount of current

sourced by the BIAS port. The BIAS port is internally

to ground sets the bias current. An additional resistor,

source, such as a digital-to-analog converter (DAC),

varies the current sourced by the BIAS port. Choosing

Ω and varying the voltage of the

DAC from ground to 2.4V effectively varies the resis-

tance seen from the BIAS port from 10k

Ω to an open

circuit. See Typical Application Circuit.

can be calculated with the following equation:

≥ 10kΩ.

Power-Supply Bypassing

Proper voltage-supply bypassing is essential for high-

1000pF capacitor in parallel with a 47pF capacitor,

the MAX2130 EV kit for additional information.

Broadband, Two-Output, Low-Noise

Amplifier for TV Tuner Applications

_______________________________________________________________________________________

7

GND

OUT2

GND

1

2

8

7

OUT1

GND

IN

BIAS

µMAX-EP

TOP VIEW

3

4

6

5

MAX2130

Pin Configuration

Chip Information

TRANSISTOR COUNT: 167