LTC2265-14/ LTC2264-14/LTC2263-14 14-Bit, 65Msps/40Msps/ 25Msps Low Power Dual ADCs FEATURES DESCRIPTION n 2-Channel Simultaneous Sampling ADC The LTC 2265-14/LTC2264-14/LTC2263-14 are 2-channel, n 73.7dB SNR simultaneous sampling 14-bit A/D converters designed n 90dB SFDR for digitizing high frequency, wide dynamic range signals. n Low Power: 171mW/113mW/94mW Total They are perfect for demanding communications applica- n 85mW/56mW/47mW per Channel tions with AC performance that includes 73.7dB SNR and n Single 1.8V Supply 90dB spurious free dynamic range (SFDR). Ultralow jitter n Serial LVDS Outputs: 1 or 2 Bits per Channel of 0.15ps allows undersampling of IF frequencies with RMS n Selectable Input Ranges: 1V to 2V excellent noise performance. P-P P-P n 800MHz Full Power Bandwidth S/H DC specs include 1LSB INL (typ), 0.3LSB DNL (typ) n Shutdown and Nap Modes and no missing codes over temperature. The transition n Serial SPI Port for Configuration noise is a low 1.2LSB . RMS n Pin Compatible 14-Bit and 12-Bit Versions n The digital outputs are serial LVDS to minimize the num- 40-Pin (6mm 6mm) QFN Package ber of data lines. Each channel outputs two bits at a time (2-lane mode) or one bit at a time (1-lane mode). The LVDS APPLICATIONS drivers have optional internal termination and adjustable n output levels to ensure clean signal integrity. Communications n Cellular Base Stations + The ENC and ENC inputs may be driven differentially n Software Defined Radios or single-ended with a sine wave, PECL, LVDS, TTL, or n Portable Medical Imaging CMOS inputs. An internal clock duty cycle stabilizer n Multichannel Data Acquisition allows high performance at full speed for a wide range of n Nondestructive Testing clock duty cycles. 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 LTC2265-14, 65Msps, 1.8V 1.8V 2-Tone FFT, f = 70MHz and 75MHz IN V OV DD DD 0 10 CH.1 + OUT1A 14-BIT 20 ANALOG S/H ADC CORE INPUT OUT1B 30 40 SERIALIZED DATA OUT2A CH.2 + 14-BIT LVDS 50 SERIALIZER ANALOG S/H ADC CORE OUTPUTS OUT2B 60 INPUT DATA 70 CLOCK 80 ENCODE OUT PLL INPUT 90 FRAME 100 110 GND OGND 120 0 10 20 30 226514 TA01 FREQUENCY (MHz) 226514 TA02 22654314fb 1 AMPLITUDE (dBFS)LTC2265-14/ LTC2264-14/LTC2263-14 ABSOLUTE MAXIMUM RATINGS PIN CONFIGURATION (Notes 1 and 2) TOP VIEW Supply Voltages V , OV ................................................ 0.3V to 2V DD DD + Analog Input Voltage (A , A , PAR/SER, SENSE) IN IN 40 39 38 37 36 35 34 33 32 31 (Note 3) ........................................ 0.3V to (V + 0.2V) DD + + A 1 30 OUT1B IN1 + Digital Input Voltage (ENC , ENC , CS, SDI, SCK) A 2 29 OUT1B IN1 + (Note 4) ..................................................... 0.3V to 3.9V V 3 28 DCO CM1 SDO (Note 4) ............................................ 0.3V to 3.9V REFH 4 27 DCO REFH 5 26 OV 41 Digital Output Voltage ................0.3V to (OV + 0.3V) DD DD GND REFL 6 25 OGND Operating Temperature Range + REFL 7 24 FR LTC2265C, 2264C, 2263C ........................ 0C to 70C V 8 23 FR CM2 LTC2265I, 2264I, 2263I .......................40C to 85C + + A 9 22 OUT2A IN2 Storage Temperature Range ...................65C to 150C A 10 21 OUT2A IN2 11 12 13 14 15 16 17 18 19 20 UJ PACKAGE 40-LEAD (6mm 6mm) PLASTIC QFN T = 150C, = 32C/W JMAX JA EXPOSED PAD (PIN 41) IS GND, MUST BE SOLDERED TO PCB ORDER INFORMATION LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE LTC2265CUJ-14 PBF LTC2265CUJ-14 TRPBF LTC2265UJ-14 0C to 70C 40-Lead (6mm 6mm) Plastic QFN LTC2265IUJ-14 PBF LTC2265IUJ-14 TRPBF LTC2265UJ-14 40C to 85C 40-Lead (6mm 6mm) Plastic QFN LTC2264CUJ-14 PBF LTC2264CUJ-14 TRPBF LTC2264UJ-14 40-Lead (6mm 6mm) Plastic QFN 0C to 70C LTC2264IUJ-14 PBF LTC2264IUJ-14 TRPBF LTC2264UJ-14 40-Lead (6mm 6mm) Plastic QFN 40C to 85C LTC2263CUJ-14 PBF LTC2263CUJ-14 TRPBF LTC2263UJ-14 40-Lead (6mm 6mm) Plastic QFN 0C to 70C LTC2263IUJ-14 PBF LTC2263IUJ-14 TRPBF LTC2263UJ-14 40C to 85C 40-Lead (6mm 6mm) Plastic QFN 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: