MAX2130EUA Maxim Integrated Products, MAX2130EUA Datasheet - Page 6

• Manufacturer Part Number: MAX2130EUA
• Description: RF Amplifier Broadband Two-Output Low-Noise Amplifier
• Manufacturer: Maxim Integrated Products
• Type: General Purpose Amplifierr

Specifications of MAX2130EUA

• Operating Frequency: 878 MHz
• Noise Figure: 4.2 dB at 500 MHz
• Supply Current: 104 mA
• Maximum Power Dissipation: 1200 mW
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Number Of Channels: 1 Channel
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Broadband, Two-Output, Low-Noise
Amplifier for TV Tuner Applications
The MAX2130 is a broadband, high-gain, low-distortion
low-noise amplifier (LNA) with two outputs intended for
operation over the 44MHz to 878MHz frequency range.
The device operates from a +5V supply and features
externally adjustable bias control circuitry that allows
minimum linearity requirements to be met while reduc-
ing current consumption.
The IN port is a broadband 75Ω input that provides a
guaranteed minimum input return loss of 7.4dB (allow-
ing for 2:1 VSWR at output) across the 44MHz to
878MHz frequency range. AC-couple the IN port with a
0.1µF DC-blocking capacitor.
The OUT1 port is a broadband, 75Ω, open-collector
output for the LNA. It requires a pullup inductor to V
for proper biasing, as well as a 0.1µF DC-blocking
capacitor. See the Applications Information section for
proper inductor selection.
The OUT2 port is a broadband, 75Ω output for the loop-
out amplifier. The loop-out amplifier is internally biased
and does not require a pullup inductor. AC-couple the
OUT2 port with a 0.1µF DC-blocking capacitor.
The linearity and supply current for both amplifiers are
externally programmable with a single resistor, R
from BIAS to GND. A nominal resistor value of 15kΩ
sets an input IP3 of +17.5dBm, an input IP2 of
+27dBm, and a supply current of 93mA. Decrease the
6
4, 6, 7, EP
_______________________________________________________________________________________
PIN
1
2
3
5
8
NAME
OUT2
OUT1
BIAS
GND
V
IN
CC
Detailed Description
Supply Voltage Input. Bypass with a 1000pF capacitor in parallel with a 47pF capacitor as close to
the pin as possible. (See Typical Application Circuit.)
Broadband Input to Low-Noise Amplifier and Loop-Out Amplifier. Internally matched to 75Ω.
Requires 0.1μF DC-blocking capacitor. (See Typical Application Circuit.)
Bias-Setting Resistor Connection. Connect a resistor, R
and supply current of the LNA and the loop-out amplifier.
Ground. Connect to ground plane with a low-inductance connection. Solder exposed paddle evenly
to the board groundplane.
Output of Loop-Out Amplifier. Requires a 0.1μF DC-blocking capacitor. (See Typical Application
Circuit.)
Open-Collector Output of Low-Noise Amplifier. Requires a pullup inductor to V
DC-blocking capacitor. (See Typical Application Circuit.)
Bias Circuitry
Outputs
Input
BIAS
CC
,
resistor value to improve linearity at the cost of
increased supply current. Increase the resistor value to
decrease supply current and degrade linearity. Use
resistor values greater than 10kΩ. Gain is not signifi-
cantly affected by the R
The OUT1 port of the LNA requires a pull-up inductor to
V
is not important as long as it has broadband imped-
ance >150Ω (<500Ω) at 10MHz across the 44MHz to
878MHz frequency band. Table 1 is a list of recom-
mended inductors.
Table 1. OUT1 Pullup Inductor
Recommended Components
CC
BLM11A221S
BLM11A471SG
BLM10A221SG
BLM21A331SG
for proper biasing. The exact value of the inductor
FUNCTION
PART NUMBER
BIAS
Applications Information
, from BIAS to GND to set the linearity
BIAS
value.
Pin Description
Inductor Selection
MANUFACTURER
CC
, as well as a 0.1μF
Murata
Murata
Murata
Murata