LTC2387-18 18-Bit, 15Msps SAR ADC Fea T Descrip T n 15Msps Throughput Rate The LTC 2387-18 is a low noise, high speed, 18-bit 15Msps n No Pipeline Delay, No Cycle Latency successive approximation register (SAR) ADC ideally n 95.7dB SNR (Typ) at f = 1MHz suited for a wide range of applications. The combination IN n 102dB SFDR (Typ) at f = 1MHz of excellent linearity and wide dynamic range makes the IN n Nyquist Sampling Up to 7.5MHz Input LTC2387-18 ideal for high speed imaging and instru- n Guaranteed 18-Bit, No Missing Codes mentation applications. No latency operation provides a n 3LSB INL (Max) unique solution for high speed control loop applications. n 8.192V Differential Inputs The very low distortion at high input frequencies enables P-P n 5V and 2.5V Supplies communications applications requiring wide dynamic n Internal 20ppm/C (Max) Reference range and significant signal bandwidth. n Serial LVDS Interface To support high speed operation while minimizing the n 125mW Power Dissipation number of data lines, the LTC2387-18 features a serial n 32-Pin (5mm 5mm) QFN Package LVDS digital interface. The LVDS interface has one-lane and two-lane output modes, allowing the user to optimize the interface data rate for each application. a T 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 Speed Data Acquisition Protected by U.S. Patents, including 7705765, 8232905, 8810443. Other patents are pending. n Imaging n Communications n Control Loops n Instrumentation n ATE Typical a T FFT, f = 15Msps, f = 2kHz SMPL IN f = 2kHz IN 0 5V 2.5V 2.5V SNR = 96.0dB 20 THD = 117dB 0.1F 0.1F 0.1F SINAD = 95.7dB 40 SFDR = 119dB V V OV CLK DD DDL DD 24.9 60 + DCO LVDS IN 4.096V INTERFACE DA 82pF + 80 DB 0V 4.096V LTC2387-18 100 TWOLANES 82pF 24.9 0V TESTPAT IN 120 PD V CM SAMPLE 140 CNV 0.1F CLOCK REFBUF REFGND REFIN GND 160 0.1F 0 2.5 5 7.5 238718 TA01a FREQUENCY (MHz) 10F 238718 TA01b 238718fa 1 For more information www.linear.com/LTC2387-18 AMPLITUDE (dBFS) ion pplica ions pplica ion uresLTC2387-18 a Te Maxi Mu M r a T p in c F T (Notes 1, 2) TOP VIEW Supply Voltage (V ) ..................................................6V DD Supply Voltage (V , OV ) ...................................2.8V DDL DD Analog Input Voltage (Note 3) + 32 31 30 29 28 27 26 25 IN , IN .........................(GND 0.3V) to (V + 0.3V) DD + GND 1 24 CLK REFBUF .........................(GND 0.3V) to (V + 0.3V) DD + IN 2 23 CLK REFIN (Note 4) ...........................(GND 0.3V) to 2.8V IN 3 22 OV DD Digital Input Voltage (Note 3) GND GND 4 21 33 + PD, TESTPAT ............. (GND 0.3V) to (OV + 0.3V) GND DD REFGND 5 20 DCO + CLK , CLK ................ (GND 0.3V) to (OV + 0.3V) REFGND 6 19 DCO DD + + REFBUF 7 18 DA TWOLANES, CNV , REFBUF 8 17 DA CNV ...........................(GND 0.3V) to (V + 0.3V) DDL 9 10 11 12 13 14 15 16 Power Dissipation .............................................. 500mW Operating Temperature Range LTC2387C ................................................ 0C to 70C UH PACKAGE LTC2387I .............................................40C to 85C 32-LEAD (5mm 5mm) PLASTIC QFN Storage Temperature Range .................. 65C to 150C T = 125C, = 34C/W JMAX JA EXPOSED PAD (PIN 33) IS GND, MUST BE SOLDERED TO PCB o r Der i n F Ma T LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE LTC2387CUH-18 PBF LTC2387CUH-18 TRPBF 238718 32-Lead (5mm 5mm) Plastic QFN 0C to 70C LTC2387IUH-18 PBF LTC2387IUH-18 TRPBF 238718 32-Lead (5mm 5mm) 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: