GAIN S21 (dB) LTC6432-15 100kHz to 1.4GHz Differential ADC Driver/IF Amplifier FEATURES DESCRIPTION n 100kHz to 1400MHz Bandwidth The LTC 6432-15 is an ultra-high dynamic range differen- n 54.4dBm OIP3 at 1MHz into a 100 Diff Load tial gain block amplifier designed to drive high resolution, n 48.0dBm OIP3 at 150MHz into a 100 Diff Load high speed ADCs. It offers a full GHz of data bandwidth for n Up to 15dBm Output Power complex spectrally efficient modulations schemes or where n NF = 3.0dB at 240MHz resistance to blockers is critical. This unique device can n Low 1/f Noise Corner simultaneously achieve low noise, incomparable linearity n User Defined Low Frequency and flat gain over the 100kHz to 1GHz band. n 15.2dB Fixed Power Gain Unlike wideband GaAs PHEMTs, MESFETs and GaN FETs, n A-Grade 100% OIP3 Tested at 150MHz this SiGe based amplifier exhibits low 1/f noise and can n 0.8 nV/Hz Total Input Noise be used down to 100kHz. n >2.75V Linear Output Swing P-P n The LTC6432-15 is designed for ease of use requiring a P1dB = 22.5dBm n minimum of support components. Impedance matching, Insensitive to V Variation CC n temperature compensation and bias control are handled Input/Output Internally Matched to 100 Differential n internally to ensure consistent performance over environ- Single 5V Supply n mental changes. DC Power = 850mW n Unconditionally Stable All A-Grade LTC6432-15 devices are tested and guaran- teed for OIP3 at 150MHz. The LTC6432-15 is housed in a 4mm 4mm, 24L, QFN package with an exposed pad APPLICATIONS for thermal management and low inductance. n Differential 1GHz Bandwidth ADC Driver n For a single-ended 50 IF Gain Block with similar perfor- Wideband Test Instrument Amplifier n mance, see the related LTC6433-15. Differential IF Amplifier n L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Analog 50/75 Balanced IF Amplifier Devices, Inc. All other trademarks are the property of their respective owners. TYPICAL APPLICATION 350 OIP3 and S21 vs Frequency 470H 250 1F 1F 1F 60 60 OIP3 S21 50 50 240nH 280 +IN GND V DNC DNC +FDBK CC 1F +OUT DNC 40 40 V = 5V CC 1:2 DNC 1:1 GND INPUT P = 4dBm/TONE OUT BALUN +IN +OUT +IN DNC Z = Z = 100 DIFF DNC IN OUT 30 30 T = 30C 1F LTC6432-15 16-BIT ADC CASE DNC T DIODE LP FILTER NFILT2 DNC IN OUT IN 1F 20 20 OUT NFILT1 10 10 IN GND V DNC DNC FDBK 1F CC 240nH 280 0 0 0.1 1 10 100 1k 1F 1F 1F FREQUENCY (MHz) 643215 TA01b 470H 250 1nF 1F 350 643215 TA01a V = 5V CC 643215f 1 For more information www.linear.com/LTC6432-15 OUTPUT INTERCEPT PT. OIP3 (dBm)LTC6432-15 ABSOLUTE MAXIMUM RATINGS PIN CONFIGURATION (Note 1) TOP VIEW Total Supply Voltage (V to GND)...........................5.5V CC Amplifier Output Current (+OUT) .........................105mA 24 23 22 21 20 19 Amplifier Output Current (OUT) .........................105mA DNC 1 18 +OUT RF Input Power, Continuous, 50 (Note 2)........ +15dBm DNC 2 17 GND RF Input Power, 100s pulse, 50 (Note 2) ......+20dBm DNC 3 16 DNC 25 Operating Case Temperature GND DNC 4 15 T DIODE Range (T ) ..........................................40C to 85C CASE NFILT2 5 14 DNC Storage Temperature Range .................. 65C to 150C NFILT1 6 13 OUT Junction Temperature (T ) .................................... 150C J 7 8 9 10 11 12 Lead Temperature (Soldering, 10 sec) ...................300C 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. CASE TEMPERATURE IS MEASURED ON THE BACKSIDE OF THE PCB.