INPUT CURRENT NOISE DENSITY (pA/ Hz) LTC6405 2.7GHz, 5V, Low Noise, Rail-to-Rail Input Differential Amplifier/Driver Features Description n Low Noise: 1.6nV/Hz RTI The LTC 6405 is a very low noise, low distortion, fully n Low Power: 18mA at 5V differential input/output amplifier optimized for 5V, single n Low Distortion (HD2/HD3): supply operation. The LTC6405 input common mode range 82dBc/65dBc at 50MHz, 2V is rail-to-rail, while the output common mode voltage is P-P 97dBc/91dBc at 25MHz, 2V independently adjustable by applying a voltage on the P-P n Rail-to-Rail Differential Input V pin. This makes the LTC6405 ideal for level shifting OCM n 4.5V to 5.25V Supply Voltage Range signals with a wide common mode range for driving 12-bit n Fully Differential Input and Output to 16-bit single supply, differential input ADCs. n Adjustable Output Common Mode Voltage A 2.7GHz gain-bandwidth product results in 65dB linearity n 800MHz 3dB Bandwidth with A = 1 V for 50MHz input signals. The LTC6405 is unity gain stable n Gain-Bandwidth Product: 2.7GHz and the closed-loop bandwidth extends from DC to 800MHz. n Low Power Shutdown The output voltage swing extends from near-ground to n Available in 8-Lead MSOP and 16-Lead 4V, to be compatible with a wide range of ADC converter 3mm 3mm 0.75mm QFN Packages input requirements. The LTC6405 draws only 18mA, and has a hardware shutdown feature which reduces current a consumption to 400A. n Differential Input ADC Driver The LTC6405 is available in a compact 3mm 3mm 16-pin n Single-Ended to Differential Conversion leadless QFN package, as well as an 8-lead MSOP package, n Level-Shifting Ground-Referenced Signals and operates over a 40C to 85C temperature range. n Level-Shifting V -Referenced Signals CC L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear n High-Linearity Direct Conversion Receivers Technology Corporation. All other trademarks are the property of their respective owners. t a Single-Ended Input to Differential Output Input Noise Density vs Input with Common Mode Level Shifting Common Mode Voltage 4 4 2V P-P V = 5V S 1.8pF NOISE MEASURED AT f = 1MHz 0V V S 50 196 200 3 3 i n 5V 0.1F 61.9 2 2 SIGNAL 1V P-P GENERATOR e 2.5V n + V OCM LTC6405UD 1 1 0.01F 2.5V 1V P-P 0 0 200 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 1.8pF INPUT COMMON MODE VOLTAGE (V) 221 6405 TA01b 6405 TA01 6405fb 1 For more information www.linear.com/6405 INPUT VOLTAGE NOISE DENSITY (nV/ Hz) pplication ypical pplicationsLTC6405 a Maxi Mu M r (Note 1) + Total Supply Voltage (V to V ) ................................5.5V Specified Temperature Range (Note 5) Input Current LTC6405I .............................................40C to 85C (+IN, IN, V , SHDN, V ) (Note 2) ............ 10mA LTC6405C ................................................ 0C to 70C OCM TIP Output Short-Circuit Duration (Note 3) ............ Indefinite Junction Temperature ........................................... 150C Operating Temperature Range Storage Temperature Range .................. 65C to 150C (Note 4) ...............................................40C to 85C p c F TOP VIEW 16 15 14 13 TOP VIEW SHDN 1 12 V IN 11 8 +IN 9 + + V 2 11 V V 22 7 SHDN OCM + 17 V 33 6 V + V 3 10 V +OUT 44 5 OUT V 4 9 V OCM MS8E PACKAGE 5 6 7 8 8-LEAD PLASTIC MSOP T = 150C, = 40C/W, = 10C/W JMAX JA JC EXPOSED PAD (PIN 9) IS V , MUST BE SOLDERED TO PCB UD PACKAGE 16-LEAD (3mm 3mm) PLASTIC QFN T = 150C, = 68C/W, = 4.2C/W JMAX JA JC EXPOSED PAD (PIN 17) IS V , MUST BE SOLDERED TO PCB D F M LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION SPECIFIED TEMPERATURE RANGE LTC6405CMS8E PBF LTC6405CMS8E TRPBF LTDKN 8-Lead Plastic MSOP 0C to 70C LTC6405IMS8E PBF LTC6405IMS8E TRPBF LTDKN 8-Lead Plastic MSOP 40C to 85C LTC6405CUD PBF LTC6405CUD TRPBF LDKP 16-Lead (3mm 3mm) Plastic QFN 0C to 70C LTC6405IUD PBF LTC6405IUD TRPBF LDKP 16-Lead (3mm 3mm) Plastic QFN 40C to 85C Consult LTC Marketing for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container. For more information on lead free part marking, go to: