LTC2158-14 Dual 14-Bit 310Msps ADC Fea T Descrip T n 68.8dBFS SNR The LTC 2158-14 is a 2-channel simultaneous sampling n 88dB SFDR 310Msps 14-bit A/D converter designed for digitizing high n Low Power: 724mW Total frequency, wide dynamic range signals. It is perfect for n Single 1.8V Supply demanding communications applications with AC per- n DDR LVDS Outputs formance that includes 68.8dB SNR and 88dB spurious n Easy-to-Drive 1.32V Input Range free dynamic range (SFDR). The 1.25GHz input bandwidth P-P n 1.25GHz Full Power Bandwidth S/H allows the ADC to undersample high frequencies with n Optional Clock Duty Cycle Stabilizer good performance. The latency is only five clock cycles. n Low Power Sleep and Nap Modes DC specs include 1.2LSB INL (typ), 0.35LSB DNL (typ) n Serial SPI Port for Configuration and no missing codes over temperature. The transition n Pin-Compatible 12-Bit Version noise is 2.11LSB . RMS n 64-Lead (9mm 9mm) QFN Package The digital outputs are double data rate (DDR) LVDS. a T + The ENC and ENC inputs can be driven differentially with n Communications a sine wave, PECL, LVDS, TTL, or CMOS inputs. An optional n Cellular Basestations clock duty cycle stabilizer allows high performance at full n Software Defined Radios speed for a wide range of clock duty cycles. n Medical Imaging 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. n High Definition Video n Testing and Measurement Instruments Typical a T LTC2158-14 32K Point 2-Tone FFT, V DD f = 71MHz and 69MHz, 310Msps IN OV DD CHANNEL A 0 DA12 13 14-BIT 20 CORRECTION DDR ANALOG OUTPUT PIPELINED S/H LOGIC LVDS INPUT DRIVERS ADC CORE DA0 1 40 60 CLOCK/DUTY OGND CYCLE CLOCK 80 CONTROL OV DD CHANNEL B 100 DB12 13 14-BIT CORRECTION 120 ANALOG OUTPUT DDR S/H PIPELINED 0 20 40 60 80 100 120 140 LOGIC INPUT DRIVERS LVDS ADC CORE FREQUENCY (MHz) DB0 1 215814 TA01b GND 215814 TA01 OGND 215814f 1 AMPLITUDE (dBFS) ion pplica ions pplica ion uresLTC2158-14 a T e Maxi Mu M r a T p c F T (Notes 1, 2) TOP VIEW Supply Voltage V , OV ................................................ 0.3V to 2V DD DD Analog Input Voltage + A , A , PAR/SER, INA/B INA/B SENSE (Note 3) ........................ 0.3V to (V + 0.2V) 1 48 OGND DD V DD + V 2 47 DA4 5 DD Digital Input Voltage GND 3 46 DA4 5 + + + ENC , ENC (Note 3) ................ 0.3V to (V + 0.3V) A 4 45 DA2 3 DD INA A 5 44 DA2 3 INA CS, SDI, SCK (Note 4) ........................... 0.3V to 3.9V + GND 6 43 DA0 1 SDO (Note 4) ............................................. 0.3V to 3.9V SENSE 7 42 DA0 1 + V 8 41 CLKOUT 65 REF Digital Output Voltage ................ 0.3V to (OV + 0.3V) DD GND 9 GND 40 CLKOUT + Operating Temperature Range V 10 39 DB12 13 CM GND 11 38 DB12 13 LTC2158C ................................................ 0C to 70C + A 12 37 DB10 11 INB + LTC2158I .............................................40C to 85C A 13 36 DB10 11 INB + GND 14 35 DB8 9 Storage Temperature Range .................. 65C to 150C V 15 34 DB8 9 DD V 16 33 OGND DD UP PACKAGE 64-LEAD (9mm 9mm) PLASTIC QFN T = 150C, = 27.4C/W JMAX JA EXPOSED PAD (PIN 65) IS GND, MUST BE SOLDERED TO PCB o r D i n F Ma T LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE LTC2158CUP-14 PBF LTC2158CUP-14 TRPBF LTC2158UP-14 64-Lead (9mm 9mm) Plastic QFN 0C to 70C LTC2158IUP-14 PBF LTC2158IUP-14 TRPBF LTC2158UP-14 64-Lead (9mm 9mm) 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: