LTC6430-15 High Linearity Differential RF/IF Amplifier/ADC Driver Fea T Descrip T n 50.0dBm OIP3 at 240MHz into a 100 Diff Load The LTC 6430-15 is a differential gain block amplifier n NF = 3.0dB at 240MHz designed to drive high resolution, high speed ADCs with n 20MHz to 2000MHz Bandwidth excellent linearity beyond 1000MHz and with low associ- n 15.2dB Gain ated output noise. The LTC6430-15 operates from a single n A-Grade 100% OIP3 Tested at 240MHz 5V power supply and consumes only 800mW. n 1.0nV/Hz Total Input Noise In its differential configuration, the LTC6430-15 can directly n S11 < 15dB Up to 1.2GHz drive the differential inputs of an ADC. Using 1:2 baluns, n S22 < 15dB Up to 1.2GHz the device makes an excellent 50 wideband balanced n >2.75V Linear Output Swing P-P amplifier. While using 1:1.33 baluns, the device makes n P1dB = 24.0dBm a high fidelity 50MHz to 1000MHz 75 CATV amplifier. n Insensitive to V Variation CC n The LTC6430-15 is designed for ease of use, requiring a 100 Differential Gain-Block Operation n minimum of support components. The device is internally Input/Output Internally Matched to 100 Diff n matched to 100 differential source/load impedance. On- Single 5V Supply n chip bias and temperature compensation ensure consistent DC Power = 800mW n performance over environmental changes. Unconditionally Stable n 4mm 4mm, 24-Lead QFN Package The LTC6430-15 uses a high performance SiGe BiCMOS process for excellent repeatability compared with similar a T GaAs amplifiers. All A-grade LTC6430-15 devices are tested n Differential ADC Driver and guaranteed for OIP3 at 240MHz. The LTC6430-15 is n Differential IF Amplifier housed in a 4mm 4mm, 24-lead, QFN package with an n OFDM Signal Chain Amplifier exposed pad for thermal management and low inductance. n 50 Balanced IF Amplifier For a single-ended 50 IF gain block with similar perfor- n 75 CATV Amplifier mance, see the related LTC6431-15 n 700MHz to 800MHz LTE 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. OIP3 vs Frequency Typical a T 50 Differential 16-Bit ADC Driver 48 5V V CM 46 44 R F V = 5V CC CHOKES 1:2 42 BALUN 40 ADC V = 5V LTC6430-15 CC 50 P = 2dBm/TONE OUT 38 Z = Z = 100 DIFF. IN OUT R = 100 T = 25C R = 100 FILTER SOURCE LOAD A 643015 TA01a 36 DIFFERENTIAL DIFFERENTIAL 0 200 400 600 800 1000 1200 FREQUENCY (MHz) 643015 TA01b 643015f 1 OIP3 (dBm) ion pplica ions pplica ion uresLTC6430-15 a T e Maxi Mu M r a T p c F T (Note 1) TOP VIEW Total Supply Voltage (V to GND)...........................5.5V CC Amplifier Output Current (+OUT) .........................105mA Amplifier Output Current (OUT) .........................105mA 24 23 22 21 20 19 RF Input Power, Continuous, 50 (Note 2)........ +15dBm DNC 1 18 +OUT RF Input Power, 100s Pulse, 50 (Note 2) ......+20dBm DNC GND 2 17 Operating Temperature Range (T ) ...40C to 85C CASE DNC 3 16 T DIODE 25 Storage Temperature Range .................. 65C to 150C GND DNC 4 15 DNC Junction Temperature (T ) .................................... 150C J DNC 5 14 GND Lead Temperature (Soldering, 10 sec) ...................300C DNC 6 13 OUT 7 8 9 10 11 12 UF PACKAGE 24-LEAD (4mm 4mm) PLASTIC QFN T = 150C, = 40C/W JMAX JC EXPOSED PAD (PIN 25) IS GND, MUST BE SOLDERED TO PCB o r D i n F Ma T The LTC6430-15 is available in two grades. The A-grade guarantees a minimum OIP3 at 240MHz while the B-grade does not. LEAD FREE FINISH TAPE AND REEL PART MARKING PACKAGE DESCRIPTION TEMPERATURE RANGE LTC6430AIUF-15 PBF LTC6430AIUF-15 TRPBF 43015 24-Lead (4mm 4mm) Plastic QFN 40C to 85C LTC6430BIUF-15 PBF LTC6430BIUF-15 TRPBF 43015 24-Lead (4mm 4mm) Plastic QFN 40C to 85C Consult LTC Marketing for parts specified with wider operating temperature ranges. Consult LTC Marketing for information on nonstandard lead based finish parts. For more information on lead free part marking, go to: