Datasheet LTC6430-20 (Analog Devices)
| Manufacturer | Analog Devices |
| Description | High Linearity Differential RF/IF Amplifier/ADC Driver |
| Pages / Page | 28 / 1 — FEATURES. DESCRIPTION. 51.0dBm OIP3 at 240MHz into a 100Ω Diff Load. NF = … |
| File Format / Size | PDF / 2.2 Mb |
| Document Language | English |
FEATURES. DESCRIPTION. 51.0dBm OIP3 at 240MHz into a 100Ω Diff Load. NF = 2.9dB at 240MHz. 20MHz to 2060MHz –3dB Bandwidth
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Text Version of Document
LTC6430-20 High Linearity Differential RF/IF Amplifier/ADC Driver
FEATURES DESCRIPTION
n
51.0dBm OIP3 at 240MHz into a 100Ω Diff Load
The LTC®6430-20 is a differential gain block amplifier n
NF = 2.9dB at 240MHz
designed to drive high resolution, high speed ADCs with n
20MHz to 2060MHz –3dB Bandwidth
excellent linearity beyond 1000MHz and with low associ- n
20.8dB Gain
ated output noise. The LTC6430-20 operates from a single n
A-Grade 100% OIP3 Tested at 380MHz
5V power supply and consumes only 850mW. n 0.6nV/√Hz Total Input Noise In its differential configuration, the LTC6430-20 can directly n S11 < –10dB Up to 1.4GHz drive the differential inputs of an ADC. Using 1:2 baluns, n S22 < –10dB Up to 1.4GHz the device makes an excellent 50Ω wideband balanced n >2.75VP-P Linear Output Swing amplifier. While using 1:1.33 baluns, the device creates n P1dB = 24.0dBm a high fidelity 40MHz to 1000MHz 75Ω CATV amplifier. n Insensitive to VCC Variation n 100Ω Differential Gain-Block Operation The LTC6430-20 is designed for ease of use, requiring a n Input/Output Internally Matched to 100Ω Diff minimum of support components. The device is internally n Single 5V Supply matched to 100Ω differential source/load impedance. On- n DC Power = 850mW chip bias and temperature compensation ensure consistent n 4mm × 4mm, 24-Lead QFN Package performance over environmental changes. The LTC6430-20 uses a high performance SiGe BiCMOS
APPLICATIONS
process for excellent repeatability compared with similar n GaAs amplifiers. All A-grade LTC6430-20 devices are tested Differential ADC Driver n and guaranteed for OIP3 at 380MHz. The LTC6430-20 is Differential IF Amplifier n housed in a 4mm × 4mm, 24-lead, QFN package with an OFDM Signal Chain Amplifier n exposed pad for thermal management and low inductance. 50Ω Balanced IF Amplifier n A single-ended 50Ω IF gain block with similar performance 75Ω CATV Amplifier n is also available, see the related LTC6431-20. 700MHz to 800MHz LTE Amplifier n Low Phase Noise Clock or LO Amplifier 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 Differential 16-Bit ADC Driver
55 5V VCM 50 45 V RF CC = 5V CHOKES 1:2 BALUN OIP3 (dBm) 40 LTC6430-20 ADC 50Ω V 35 CC = 5V POUT = 3dBm/TONE Z R IN = ZOUT = 100Ω DIFF. SOURCE = 100Ω RLOAD = 100Ω FILTER TA = 25°C 643020 TA01a DIFFERENTIAL DIFFERENTIAL 30 0 200 400 600 800 1000 FREQUENCY (MHz) 643020 TA01b 643020f For more information www.linear.com/LTC6430-20 1 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information DC Electrical Characteristics AC Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Test Circuit A Operation Applications Information Differential S Parameters Typical Applications Package Description Typical Application Related Parts
FEATURES DESCRIPTION
n
51.0dBm OIP3 at 240MHz into a 100Ω Diff Load
The LTC®6430-20 is a differential gain block amplifier n
NF = 2.9dB at 240MHz
designed to drive high resolution, high speed ADCs with n
20MHz to 2060MHz –3dB Bandwidth
excellent linearity beyond 1000MHz and with low associ- n
20.8dB Gain
ated output noise. The LTC6430-20 operates from a single n
A-Grade 100% OIP3 Tested at 380MHz
5V power supply and consumes only 850mW. n 0.6nV/√Hz Total Input Noise In its differential configuration, the LTC6430-20 can directly n S11 < –10dB Up to 1.4GHz drive the differential inputs of an ADC. Using 1:2 baluns, n S22 < –10dB Up to 1.4GHz the device makes an excellent 50Ω wideband balanced n >2.75VP-P Linear Output Swing amplifier. While using 1:1.33 baluns, the device creates n P1dB = 24.0dBm a high fidelity 40MHz to 1000MHz 75Ω CATV amplifier. n Insensitive to VCC Variation n 100Ω Differential Gain-Block Operation The LTC6430-20 is designed for ease of use, requiring a n Input/Output Internally Matched to 100Ω Diff minimum of support components. The device is internally n Single 5V Supply matched to 100Ω differential source/load impedance. On- n DC Power = 850mW chip bias and temperature compensation ensure consistent n 4mm × 4mm, 24-Lead QFN Package performance over environmental changes. The LTC6430-20 uses a high performance SiGe BiCMOS
APPLICATIONS
process for excellent repeatability compared with similar n GaAs amplifiers. All A-grade LTC6430-20 devices are tested Differential ADC Driver n and guaranteed for OIP3 at 380MHz. The LTC6430-20 is Differential IF Amplifier n housed in a 4mm × 4mm, 24-lead, QFN package with an OFDM Signal Chain Amplifier n exposed pad for thermal management and low inductance. 50Ω Balanced IF Amplifier n A single-ended 50Ω IF gain block with similar performance 75Ω CATV Amplifier n is also available, see the related LTC6431-20. 700MHz to 800MHz LTE Amplifier n Low Phase Noise Clock or LO Amplifier 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 Differential 16-Bit ADC Driver
55 5V VCM 50 45 V RF CC = 5V CHOKES 1:2 BALUN OIP3 (dBm) 40 LTC6430-20 ADC 50Ω V 35 CC = 5V POUT = 3dBm/TONE Z R IN = ZOUT = 100Ω DIFF. SOURCE = 100Ω RLOAD = 100Ω FILTER TA = 25°C 643020 TA01a DIFFERENTIAL DIFFERENTIAL 30 0 200 400 600 800 1000 FREQUENCY (MHz) 643020 TA01b 643020f For more information www.linear.com/LTC6430-20 1 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information DC Electrical Characteristics AC Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Test Circuit A Operation Applications Information Differential S Parameters Typical Applications Package Description Typical Application Related Parts
