LTC2240-12 12-Bit, 170Msps ADC FEATURES DESCRIPTION n Sample Rate: 170Msps The LTC 2240-12 is a 170Msps, sampling 12-bit A/D con- n 65.6dB SNR verter designed for digitizing high frequency, wide dynamic n 80dB SFDR range signals. The LTC2240-12 is perfect for demanding n 1.2GHz Full Power Bandwidth S/H communications applications with AC performance that n Single 2.5V Supply includes 65.6dB SNR and 80dB SFDR. Ultralow jitter of n Low Power Dissipation: 445mW 95fs allows IF undersampling with excellent noise RMS n LVDS, CMOS, or Demultiplexed CMOS Outputs performance. n Selectable Input Ranges: 0.5V or 1V DC specs include 0.6LSB INL (typ), 0.4LSB DNL (typ) n No Missing Codes and no missing codes over temperature. n Optional Clock Duty Cycle Stabilizer n The digital outputs can be either differential LVDS, or Shutdown and Nap Modes n single-ended CMOS. There are three format options for Data Ready Output Clock n the CMOS outputs: a single bus running at the full data Pin Compatible Family rate or two demultiplexed buses running at half data rate 250Msps: LTC2242-12 (12-Bit), LTC2242-10 (10-Bit) with either interleaved or simultaneous update. A separate 210Msps: LTC2241-12 (12-Bit), LTC2241-10 (10-Bit) output power supply allows the CMOS output swing to 170Msps: LTC2240-12 (12-Bit), LTC2240-10 (10-Bit) range from 0.5V to 2.625V. 185Msps: LTC2220-1 (12-Bit)* 170Msps: LTC2220 (12-Bit), LTC2230 (10-Bit)* + The ENC and ENC inputs may be driven differentially or 135Msps: LTC2221 (12-Bit), LTC2231 (10-Bit)* single ended with a sine wave, PECL, LVDS, TTL, or CMOS n 64-Pin 9mm 9mm QFN Package inputs. An optional clock duty cycle stabilizer allows high performance over a wide range of clock duty cycles. APPLICATIONS 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 Wireless and Wired Broadband Communication *LTC2220-1, LTC2220, LTC2221, LTC2230, LTC2231 are 3.3V parts. n Cable Head-End Systems n Power Ampli er Linearization n Communications Test Equipment TYPICAL APPLICATION 2.5V V DD SFDR vs Input Frequency 0.5V 85 REFH TO 2.625V FLEXIBLE REFERENCE 80 REFL OV DD 75 D11 70 + 12-BIT CMOS CORRECTION ANALOG OUTPUT INPUT PIPELINED OR 65 INPUT LOGIC DRIVERS S/H 1V RANGE ADC CORE LVDS 60 D0 2V RANGE 55 OGND 50 CLOCK/DUTY 45 CYCLE CONTROL 40 0 100 200 600 700 800 900 300 400 500 1000 224012 TA01 INPUT FREQUENCY (MHz) 224012 G11 ENCODE INPUT 224012fd 1 SFDR (dBFS)LTC2240-12 OV = V (Notes 1, 2) ABSOLUTE MAXIMUM RATINGS DD DD Supply Voltage (V ) ...............................................2.8V Power Dissipation .............................................1500mW DD Digital Output Ground Voltage (OGND) ........ 0.3V to 1V Operating Temperature Range Analog Input Voltage (Note 3) .......0.3V to (V + 0.3V) LTC2240C-12 ........................................... 0C to 70C DD Digital Input Voltage ......................0.3V to (V + 0.3V) LTC2240I-12 ........................................40C to 85C DD Digital Output Voltage ................ 0.3V to (OV + 0.3V) Storage Temperature Range ................... 65C to 150C DD PIN CONFIGURATION TOP VIEW + + A 1 48 D9 /DA6 IN + A 2 47 D9 /DA5 IN + A 3 46 D8 /DA4 IN A 4 45 D8 /DA3 IN + REFHA 5 44 D7 /DA2 REFHA 6 43 D7 /DA1 REFLB 7 42 OV DD REFLB 8 41 OGND 65 + REFHB 9 40 D6 /DA0 REFHB 10 39 D6 /CLKOUTA + REFLA 11 38 D5 /CLKOUTB REFLA 12 37 D5 /OFB + V 13 36 CLKOUT /DB11 DD V 14 35 CLKOUT /DB10 DD V 15 34 OV DD DD GND 16 33 OGND UP PACKAGE 64-LEAD (9mm 9mm) PLASTIC QFN EXPOSED PAD (PIN 65) IS GND, MUST BE SOLDERED TO PCB T = 150C, = 20C/W JMAX JA ORDER INFORMATION LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE LTC2240CUP-12 PBF LTC2240CUP-12 TRPBF LTC2240UP-12 64-Lead (9mm 9mm) Plastic QFN 0C to 70C 40C to 85C LTC2240IUP-12 PBF LTC2240IUP-12 TRPBF LTC2240UP-12 64-Lead (9mm 9mm) Plastic QFN LEAD BASED FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE 0C to 70C LTC2240CUP-12 LTC2240CUP-12 TR LTC2240UP-12 64-Lead (9mm 9mm) Plastic QFN LTC2240IUP-12 LTC2240IUP-12 TR LTC2240UP-12 64-Lead (9mm 9mm) Plastic QFN 40C to 85C Consult LTC Marketing for parts speci ed with wider operating temperature ranges. *Temperature grades are identi ed by a label on the shipping container. For more information on lead free part marking, go to: