QPL9057
Ultra-Low Noise Flat Gain Amplifier
®
General Description
The QPL9057 is a flat-gain, high-linearity, ultra-low noise
amplifier in a small 2 x 2 mm surface-mount package. The
LNA provides a gain flatness of 2.4 dB (peak-to-peak) over
a wide bandwidth from 1.5 to 3.8GHz. At 3.5 GHz, the
amplifier typically provides 22.8 dB gain, +32 dBm OIP3 at
a 50 mA bias setting, and 0.54 dB noise figure. The LNA
can be biased from a single positive supply ranging from
3.3 to 5 volts. The device is housed in a green/RoHS-
compliant industry-standard 2x2 mm package.
8 Pin 2X2 mm DFN Package
Product Features
• 0.6-4.2 GHz Operational Bandwidth
• Ultra-low noise figure, 0.54 dB NF @ 3.5 GHz
• >20 dB gain across 1.5 to 3.8 GHz
• Flat 2.4 dB gain variation across 1.7 to 3.8GHz
• Bias adjustable for linearity optimization
• 32 dBm OIP3 at 50mA IDD
• Shut-down mode pin with 1.8V logic
• Unconditionally stable
• Integrated shutdown control pin
The QPL9057 is internally matched using a high-
performance E-pHEMT process and only requires five
external components for operation from a single positive
supply: an external RF choke and blocking/bypass
capacitors and a bias resistor going to pin 1. This LNA
integrates a shut-down biasing capability to allow for
operation in TDD applications.
The QPL9057 is optimized for linear performance across
the 1.5 to 4.2 GHz frequency band but can operate down to
600 MHz.
• Maintains OFF state with high Pin over drive
• +3.3V to +5.25V single supply; does not require -VGG
Functional Block Diagram
Applications
• Repeaters / DAS
Pin 1 Reference Mark
• Mobile Infrastructure
• LTE / WCDMA / CDMA / GSM
• General Purpose Wireless
• TDD or FDD systems
1
2
3
4
8
7
6
5
Vbias
RF In
NC
NC
RF Out
Shut Down
NC
NC
Backside Paddle - RF/DC GND
Top View
Ordering Information
Part No.
QPL9057TR7
Description
2500 pieces on a 7” Reel
QPL9057EVB-01
0.6-4.2 GHz Evaluation Board
Datasheet, Rev. F, Sept 20, 2020 | Subject to change without notice
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