Datasheet LTC6431-20 (Analog Devices)
| Manufacturer | Analog Devices |
| Description | 20dB Gain Block, 50Ω IF Amplifier |
| Pages / Page | 16 / 1 — FEATURES. DESCRIPTION. APPLICATIONS. LTC6431 FAMILY. GAIN. TYPICAL … |
| File Format / Size | PDF / 429 Kb |
| Document Language | English |
FEATURES. DESCRIPTION. APPLICATIONS. LTC6431 FAMILY. GAIN. TYPICAL APPLICATION. OIP3 vs Frequency. Single-Ended IF Amplifier
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LTC6431-20 20dB Gain Block, 50Ω IF Amplifier
FEATURES DESCRIPTION
n 50Ω Matched 20MHz to 1400MHz The LTC®6431-20 is a gain block amplifier exhibiting n 20.8dB Power Gain excellent linearity at frequencies beyond 1000MHz and n 46.2dBm OIP3 at 240MHz Into 50Ω with low associated output noise. n NF = 2.6dB at 240MHz The unique combination of linearity, low noise and low n 0.6nV/√Hz Total Input Noise power dissipation make this an ideal candidate for many n S11 < –10dB Up to 2.0GHz signal-chain applications. The LTC6431-20 is easy to n S22 < –10dB Up to 1.4GHz use, requiring a minimum of external components. It is n >2.0VP-P Linear Output Swing internally input/output matched to 50Ω and it draws only n P1dB = 22.0dBm 93mA from a single 5V supply. n 50Ω Single-Ended Input/Output n Insensitive to V On-chip bias and temperature compensation maintain CC Variation n A-Grade 100% OIP3 Tested at 240MHz performance over environmental changes. n Input/Output Internally Matched to 50Ω The LTC6431-20 uses a high performance SiGe BiCMOS n Single 5V Supply process for excellent repeatability compared with similar GaAs amplifiers. All A-grade LTC6431-20 devices are tested and guaranteed for OIP3 at 240MHz. The LTC6431-20 is
APPLICATIONS
housed in a 4mm × 4mm 24-lead QFN package with an n Single-Ended IF Amplifier exposed pad for thermal management and low inductance. n ADC Driver n
LTC6431 FAMILY GAIN
CATV LTC6431-15 15.5dB LTC6431-20 20.8dB L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners.
TYPICAL APPLICATION OIP3 vs Frequency Single-Ended IF Amplifier
52 50 VCC = 5V 5V 48 RF CHOKE 560nH 46 44 LTC6431-20 OIP3 (dBm) 1000pF 1000pF 42 50Ω 50Ω VCC = 5V 40 TA = 25°C 643120 TA01a POUT = 2dBm/TONE 38 fSPACE = 1MHz ZIN = ZOUT = 50Ω 36 0 200 400 600 800 1000 FREQUENCY (MHz) 643120 TA01b 643120f For more information www.linear.com/LTC6431-20 1 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Order Information DC Electrical Characteristics AC Electrical Characteristics Typical Performance Characteristics Block Diagram Test Circuit A Operation Applications Information Demo Board S Parameters Package Description Typical Application Related Parts
FEATURES DESCRIPTION
n 50Ω Matched 20MHz to 1400MHz The LTC®6431-20 is a gain block amplifier exhibiting n 20.8dB Power Gain excellent linearity at frequencies beyond 1000MHz and n 46.2dBm OIP3 at 240MHz Into 50Ω with low associated output noise. n NF = 2.6dB at 240MHz The unique combination of linearity, low noise and low n 0.6nV/√Hz Total Input Noise power dissipation make this an ideal candidate for many n S11 < –10dB Up to 2.0GHz signal-chain applications. The LTC6431-20 is easy to n S22 < –10dB Up to 1.4GHz use, requiring a minimum of external components. It is n >2.0VP-P Linear Output Swing internally input/output matched to 50Ω and it draws only n P1dB = 22.0dBm 93mA from a single 5V supply. n 50Ω Single-Ended Input/Output n Insensitive to V On-chip bias and temperature compensation maintain CC Variation n A-Grade 100% OIP3 Tested at 240MHz performance over environmental changes. n Input/Output Internally Matched to 50Ω The LTC6431-20 uses a high performance SiGe BiCMOS n Single 5V Supply process for excellent repeatability compared with similar GaAs amplifiers. All A-grade LTC6431-20 devices are tested and guaranteed for OIP3 at 240MHz. The LTC6431-20 is
APPLICATIONS
housed in a 4mm × 4mm 24-lead QFN package with an n Single-Ended IF Amplifier exposed pad for thermal management and low inductance. n ADC Driver n
LTC6431 FAMILY GAIN
CATV LTC6431-15 15.5dB LTC6431-20 20.8dB L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners.
TYPICAL APPLICATION OIP3 vs Frequency Single-Ended IF Amplifier
52 50 VCC = 5V 5V 48 RF CHOKE 560nH 46 44 LTC6431-20 OIP3 (dBm) 1000pF 1000pF 42 50Ω 50Ω VCC = 5V 40 TA = 25°C 643120 TA01a POUT = 2dBm/TONE 38 fSPACE = 1MHz ZIN = ZOUT = 50Ω 36 0 200 400 600 800 1000 FREQUENCY (MHz) 643120 TA01b 643120f For more information www.linear.com/LTC6431-20 1 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Order Information DC Electrical Characteristics AC Electrical Characteristics Typical Performance Characteristics Block Diagram Test Circuit A Operation Applications Information Demo Board S Parameters Package Description Typical Application Related Parts
