LTC2172-14/ LTC2171-14/LTC2170-14 14-Bit, 65Msps/40Msps/ 25Msps Low Power Quad ADCs Fea T Descrip T n 4-Channel Simultaneous Sampling ADC The LTC 2172-14/LTC2171-14/LTC2170-14 are 4-channel, n 73.7dB SNR simultaneous sampling 14-bit A/D converters designed for n 90dB SFDR digitizing high frequency, wide dynamic range signals. They n Low Power: 311mW/202mW/162mW Total, are perfect for demanding communications applications 78mW/51mW/41mW per Channel with AC performance that includes 73.7dB SNR and 90dB n Single 1.8V Supply spurious free dynamic range (SFDR). An ultralow jitter of n Serial LVDS Outputs: One or Two Bits per Channel 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 Sample-and-Hold DC specifications include 1LSB INL (typ), 0.3LSB DNL n Shutdown and Nap Modes (typ) and no missing codes over temperature. The transi- n Serial SPI Port for Configuration tion 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- 52-Pin (7mm 8mm) 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 a T drivers have optional internal termination and adjustable n Communications output levels to ensure clean signal integrity. n Cellular Base Stations + n Software Defined Radios The ENC and ENC inputs may be driven differentially n Portable Medical Imaging or single-ended with a sine wave, PECL, LVDS, TTL or n Multichannel Data Acquisition CMOS inputs. An internal clock duty cycle stabilizer al- n Nondestructive Testing lows high performance at full speed for a wide range of 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 a T 1.8V 1.8V LTC2172-14, 65Msps, V OV DD DD 2-Tone FFT, f = 70MHz and 75MHz IN CHANNEL 1 14-BIT OUT1A ANALOG S/H 0 ADC CORE OUT1B INPUT 10 20 CHANNEL 2 OUT2A 14-BIT 30 ANALOG S/H ADC CORE OUT2B INPUT 40 DATA SERIALIZER 50 SERIALIZED CHANNEL 3 OUT3A 14-BIT LVDS 60 ANALOG S/H ADC CORE OUT3B OUTPUTS INPUT 70 80 CHANNEL 4 OUT4A 14-BIT 90 ANALOG S/H ADC CORE OUT4B INPUT 100 DATA 110 CLOCK 120 ENCODE OUT PLL 0 10 20 30 INPUT FRAME FREQUENCY (MHz) 217214 TA01b GND OGND 217214 TA01 21721014fb 1 AMPLITUDE (dBFS) ion pplica ions pplica ion uresLTC2172-14/ LTC2171-14/LTC2170-14 a Te Maxi Mu M r a T p c F T (Notes 1 and 2) TOP VIEW Supply Voltages V , OV ............................................... 0.3V to 2V DD DD + Analog Input Voltage (A , A , IN IN 52 51 50 49 48 47 46 45 44 43 42 41 PAR/SER, SENSE) (Note 3) .......... 0.3V to (V + 0.2V) DD + + + A 1 40 OUT2A IN1 Digital Input Voltage (ENC , ENC , CS, A 2 39 OUT2A IN1 SDI, SCK) (Note 4) .................................... 0.3V to 3.9V + V 3 38 OUT2B CM12 SDO (Note 4) ............................................. 0.3V to 3.9V + A 4 37 OUT2B IN2 + Digital Output Voltage ................ 0.3V to (OV + 0.3V) DD A 5 36 DCO IN2 Operating Temperature Range REFH DCO 6 35 REFH 7 53 34 OV LTC2172C, LTC2171C, LTC2170C ............. 0C to 70C DD GND REFL 8 33 OGND LTC2172I, LTC2171I, LTC2170I ............40C to 85C + REFL 9 32 FR Storage Temperature Range .................. 65C to 150C + A 10 31 FR IN3 + A 11 30 OUT3A IN3 V 12 29 OUT3A CM34 + + A 13 28 OUT3B IN4 A 14 27 OUT3B IN4 15 16 17 18 19 20 21 22 23 24 25 26 UKG PACKAGE 52-LEAD (7mm 8mm) PLASTIC QFN T = 150C, = 28C/W JMAX JA EXPOSED PAD (PIN 53) 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 LTC2172CUKG-14 PBF LTC2172CUKG-14 TRPBF LTC2172UKG-14 52-Lead (7mm 8mm) Plastic QFN 0C to 70C LTC2172IUKG-14 PBF LTC2172IUKG-14 TRPBF LTC2172UKG-14 52-Lead (7mm 8mm) Plastic QFN 40C to 85C LTC2171CUKG-14 PBF LTC2171CUKG-14 TRPBF LTC2171UKG-14 52-Lead (7mm 8mm) Plastic QFN 0C to 70C LTC2171IUKG-14 PBF LTC2171IUKG-14 TRPBF LTC2171UKG-14 52-Lead (7mm 8mm) Plastic QFN 40C to 85C LTC2170CUKG-14 PBF LTC2170CUKG-14 TRPBF LTC2170UKG-14 52-Lead (7mm 8mm) Plastic QFN 0C to 70C LTC2170IUKG-14 PBF LTC2170IUKG-14 TRPBF LTC2170UKG-14 52-Lead (7mm 8mm) 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: