max2130euat Maxim Integrated Products, Inc., max2130euat Datasheet - Page 7

• Manufacturer Part Number: max2130euat
• Description: Max2130 Broadband, Two-output, Low-noise Amplifier For Tv Tuner Applications
• Manufacturer: Maxim Integrated Products, Inc.

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
biased to 1.2V. A resistor, R
to ground sets the bias current. An additional resistor,
R
source, such as a digital-to-analog converter (DAC),
varies the current sourced by the BIAS port. Choosing
R
DAC from ground to 2.4V effectively varies the resis-
tance seen from the BIAS port from 10kΩ to an open
circuit. See Typical Application Circuit.
ADJ
ADJ
TOP VIEW
, placed from the BIAS port to an external voltage
= R
BIAS
BIAS
GND
V
= 20kΩ and varying the voltage of the
CC
IN
Dynamic Linearity Adjustment
_______________________________________________________________________________________
1
2
4
3
µMAX-EP
MAX2130
Pin Configuration
BIAS
Broadband, Two-Output, Low-Noise
Amplifier for TV Tuner Applications
, connected from BIAS
8
7
6
5
OUT1
GND
GND
OUT2
The DAC output voltage, V
alent resistance to ground, R
can be calculated with the following equation:
where R
Proper voltage-supply bypassing is essential for high-
frequency circuit stability. Bypass the V
1000pF capacitor in parallel with a 47pF capacitor,
located as close to the V
the MAX2130 EV kit for additional information.
TRANSISTOR COUNT: 167
ADJ
V
ADJ
= R
= 2.4V - (R
BIAS
, V
BIAS
Power-Supply Bypassing
ADJ
CC
BIAS
= 1.2V, R
Chip Information
EQ
, required to set an equiv-
pin as possible. Refer to
✕
, seen by the BIAS port,
V
BIAS
EQ
) / R
≥ 10kΩ.
CC
EQ
pin with a
7