LTC2293/LTC2292/LTC2291 Dual 12-Bit, 65/40/25Msps Low Power 3V ADCs FEATURES DESCRIPTIO Integrated Dual 12-Bit ADCs The LTC 2293/LTC2292/LTC2291 are 12-bit 65Msps/ Sample Rate: 65Msps/40Msps/25Msps 40Msps/25Msps, low power dual 3V A/D converters de- Single 3V Supply (2.7V to 3.4V) signed for digitizing high frequency, wide dynamic range Low Power: 400mW/235mW/150mW signals. The LTC2293/LTC2292/LTC2291 are perfect for 71.3dB SNR demanding imaging and communications applications 90dB SFDR with AC performance that includes 71.3dB SNR and 90dB 110dB Channel Isolation at 100MHz SFDR for signals at the Nyquist frequency. Multiplexed or Separate Data Bus DC specs include 0.3LSB INL (typ), 0.15LSB DNL (typ) Flexible Input: 1V to 2V Range P-P P-P and no missing codes over temperature. The transition 575MHz Full Power Bandwidth S/H noise is a low 0.25LSB . RMS Clock Duty Cycle Stabilizer A single 3V supply allows low power operation. A separate Shutdown and Nap Modes output supply allows the outputs to drive 0.5V to 3.6V Pin Compatible Family logic. An optional multiplexer allows both channels to 105Msps: LTC2282 (12-Bit), LTC2284 (14-Bit) share a digital output bus. 80Msps: LTC2294 (12-Bit), LTC2299 (14-Bit) 65Msps: LTC2293 (12-Bit), LTC2298 (14-Bit) A single-ended CLK input controls converter operation. An 40Msps: LTC2292 (12-Bit), LTC2297 (14-Bit) optional clock duty cycle stabilizer allows high perfor- 25Msps: LTC2291 (12-Bit), LTC2296 (14-Bit) mance at full speed for a wide range of clock duty cycles. 10Msps: LTC2290 (12-Bit), LTC2295 (14-Bit) , LTC and LT are registered trademarks of Linear Technology Corporation. 64-Pin (9mm 9mm) QFN Package All other trademarks are the property of their respective owners. U APPLICATIO S Wireless and Wired Broadband Communication Imaging Systems Spectral Analysis Portable Instrumentation TYPICAL APPLICATIO OV DD + LTC2293: SNR vs Input Frequency, 12-BIT ANALOG INPUT D11A PIPELINED OUTPUT 1dB, 2V Range, 65Msps INPUT A S/H ADC CORE DRIVERS D0A 72 OGND 71 CLOCK/DUTY CYCLE CLK A CONTROL MUX 70 CLOCK/DUTY CYCLE CLK B CONTROL 69 OV DD D11B + OUTPUT 68 12-BIT ANALOG INPUT DRIVERS 0 50 100 150 200 PIPELINED D0B INPUT B S/H ADC CORE INPUT FREQUENCY (MHz) OGND 229321 TA02 229321 TA01 229321fa 1 SNR (dBFS) U ULTC2293/LTC2292/LTC2291 ABSOLUTE AXI U RATI GS OV = V (Notes 1, 2) DD DD Supply Voltage (V ) ................................................. 4V 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) LTC2293C, LTC2292C, LTC2291C........... 0C to 70C DD Digital Input Voltage .................... 0.3V to (V + 0.3V) LTC2293I, LTC2292I, LTC2291I ..........40C to 85C DD Digital Output Voltage ................ 0.3V to (OV + 0.3V) Storage Temperature Range ..................65C to 125C DD UUW PACKAGE/ORDER I FOR ATIO TOP VIEW ORDER PART QFN PART* NUMBER MARKING + A 1 48 DA5 INA A 2 47 DA4 INA REFHA 3 46 DA3 REFHA 4 45 DA2 REFLA 5 44 DA1 LTC2293CUP LTC2293UP REFLA 6 43 DA0 V 7 42 NC DD LTC2293IUP LTC2293UP CLKA 8 41 NC 65 CLKB 9 40 OFB LTC2292CUP LTC2292UP V 10 39 DB11 DD REFLB 11 38 DB10 LTC2292IUP LTC2292UP REFLB 12 37 DB9 REFHB 13 36 DB8 LTC2291CUP LTC2291UP REFHB 14 35 DB7 A 15 34 DB6 LTC2291IUP LTC2291UP INB + A 16 33 DB5 INB Order Options Tape and Reel: Add TR UP PACKAGE Lead Free: Add PBF Lead Free Tape and Reel: Add TRPBF 64-LEAD (9mm 9mm) PLASTIC QFN Lead Free Part Marking: