LTC2325-16 Quad, 16-Bit, 5Msps/Ch Simultaneous Sampling ADC FEATURES DESCRIPTION n 5Msps/Ch Throughput Rate The LTC 2325-16 is a low noise, high speed quad 16-bit n Four Simultaneously Sampling Channels successive approximation register (SAR) ADC with n Guaranteed 16-Bit, No Missing Codes differential inputs and wide input common mode range. n 8V Differential Inputs with Wide Input Operating from a single 3.3V or 5V supply, the LTC2325-16 P-P Common Mode Range has an 8V differential input range, making it ideal for P-P n 82dB SNR (Typ) at f = 2.2MHz applications which require a wide dynamic range with high IN n 88dB THD (Typ) at f = 2.2MHz common mode rejection. The LTC2325-16 achieves 2LSB IN n Guaranteed Operation to 125C INL typical, no missing codes at 16 bits and 82dB SNR. n Single 3.3V or 5V Supply The LTC2325-16 has an onboard low drift (20ppm/C max) n Low Drift (20ppm/C Max) 2.048V or 4.096V 2.048V or 4.096V temperature-compensated reference. Internal Reference The LTC2325-16 also has a high speed SPI-compatible n 1.8V to 2.5V I/O Voltages serial interface that supports CMOS or LVDS. The fast n CMOS or LVDS SPI-Compatible Serial I/O 5Msps per channel throughput with one cycle latency n Power Dissipation 40mW/Ch (Typ) makes the LTC2325-16 ideally suited for a wide variety n Small 52-Pin (7mm 8mm) QFN Package of high speed applications. The LTC2325-16 dissipates only 40mW per channel and offers nap and sleep modes to reduce the power consumption to 90W for further APPLICATIONS power savings during inactive periods. n High Speed Data Acquisition Systems L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and n Communications ThinSOT is a trademark of Linear Technology Corporation. All other trademarks are the property of their respective owners. n Optical Networking n Multiphase Motor Control TYPICAL APPLICATION 32k Point FFT f = 5Msps, SMPL 10F 1F TRUE DIFFERENTIAL INPUTS f = 2.2MHz IN NO CONFIGURATION REQUIRED 3.3V OR 5V 1.8V TO 2.5V 0 + IN , IN SNR = 82.1dB V GND GND O DD V DD THD = 88.1dB ARBITRARY DIFFERENTIAL 20 V V CMOS/LVDS SINAD = 81.5dB DD DD + A 16-BIT IN1 S/H SDR/DDR SFDR = 90.2dB A SAR ADC IN1 REFBUFEN 40 + A 16-BIT SDO1 IN2 S/H 0V 0V SDO2 A SAR ADC 60 IN2 SDO3 LTC2325-16 SDO4 80 CLKOUT BIPOLAR UNIPOLAR + A 16-BIT IN3 SCK V V DD DD S/H A SAR ADC IN3 100 CNV SAMPLE + A 16-BIT IN4 CLOCK S/H A SAR ADC 120 IN4 0V 0V REF REFOUT1 REFOUT2 REFOUT3 REFOUT4 140 0 0.5 1 1.5 2 2.5 1F 10F 10F 10F 10F FOUR SIMULTANEOUS SAMPLING CHANNELS FREQUENCY (MHz) 232516 TA01a 232516 TA01b 232516fa 1 For more information www.linear.com/LTC2325-16 AMPLITUDE (dBFS)LTC2325-16 ABSOLUTE MAXIMUM RATINGS PIN CONFIGURATION (Notes 1, 2) TOP VIEW Supply Voltage (V ) ..................................................6V DD Supply Voltage (OV ) ................................................3V DD Analog Input Voltage 52 51 50 49 48 47 46 45 44 43 42 41 A +, A (Note 3) ................... 0.3V to (V + 0.3V) IN IN DD A 1 40 DNC/SDOD IN4 + + REFOUT1,2,3,4.......................0.3V to (V + 0.3V) A SDO4/SDOD 2 39 DD IN4 GND GND 3 38 CNV........................................ 0.3V to (OV + 0.3V) DD A OV 4 37 IN3 DD Digital Input Voltage + A 5 36 DNC/SDOC IN3 (Note 3) .......................... (GND 0.3V) to (OV + 0.3V) + DD REFOUT3 SDO3/SDOC 6 35 GND 7 34 CLKOUTEN/CLKOUT Digital Output Voltage 53 + REF 8 33 CLKOUT/CLKOUT GND (Note 3) .......................... (GND 0.3V) to (OV + 0.3V) DD REFOUT2 9 32 GND Operating Temperature Range A 10 31 OV IN2 DD + LTC2325C ................................................ 0C to 70C A 11 30 DNC/SDOB IN2 + GND 12 29 SDO2/SDOB LTC2325I .............................................40C to 85C A 13 28 DNC/SDOA IN1 LTC2325H .......................................... 40C to 125C + + A 14 27 SDO1/SDOA IN1 Storage Temperature Range .................. 65C to 150C 15 16 17 18 19 20 21 22 23 24 25 26 UKG PACKAGE 52-LEAD (7mm 8mm) PLASTIC QFN = 150C, = 29C/W T JMAX JA EXPOSED PAD (PIN 53) IS GND, MUST BE SOLDERED TO PCB ORDER INFORMATION