S/(N + D) (dB) LTC1196/LTC1198 8-Bit, SO-8, 1Msps ADCs with Auto-Shutdown Options FEATURES DESCRIPTION n High Sampling Rates: 1MHz (LTC1196) The LTC 1196/LTC1198 are 600ns, 8-bit A/D converters 750kHz (LTC1198) with sampling rates up to 1MHz. They are offered in 8-pin n Low Cost SO packages and operate on 3V to 6V supplies. Power n Single Supply 3V and 5V Speci cations dissipation is only 10mW with a 3V supply or 50mW with n Low Power: 10mW at 3V Supply a 5V supply. The LTC1198 automatically powers down 50mW at 5V Supply to a typical supply current of 1nA whenever it is not n Auto-Shutdown: 1nA Typical (LTC1198) performing conversions. These 8-bit switched-capacitor n 1/2LSB Total Unadjusted Error over Temperature successive approximation ADCs include sample-and- n 3-Wire Serial I/O holds. The LTC1196 has a differential analog input the n 1V to 5V Input Span Range (LTC1196) LTC1198 offers a software selectable 2-channel MUX. n Converts 1MHz Inputs to 7 Effective Bits The 3-wire serial I/O, SO-8 packages, 3V operation and n Differential Inputs (LTC1196) extremely high sample rate-to-power ratio make these n 2-Channel MUX (LTC1198) ADCs an ideal choice for compact, high speed systems. n SO-8 Plastic Package These ADCs can be used in ratiometric applications or with external references. The high impedance analog in- APPLICATIONS puts and the ability to operate with reduced spans below 1V full scale (LTC1196) allow direct connection to signal n High Speed Data Acquisition sources in many applications, eliminating the need for n Disk Drives gain stages. n Portable or Compact Instrumentation n Low Power or Battery-Operated Systems The A-grade devices are speci ed with total unadjusted error of 1/2LSB maximum over temperature. 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 APPLICATION Single 5V Supply, 1Msps, 8-Bit Sampling ADC Effective Bits and S/(N + D) vs Input Frequency 8 50 1F 5V V =V = 2.7V REF CC 7 44 f = 383kHz (LTC1196) SMPL f = 287kHz (LTC1198) SMPL 6 V =V = 5V REF CC f = 1MHz (LTC1196) SMPL 1 8 5 f = 750kHz (LTC1198) CS V CC SMPL SERIAL DATA LINK TO 2 7 4 ASIC, PLD, MPU, DSP, +IN CLK ANALOG INPUT LTC1196 OR SHIFT REGISTERS 3 6 0V TO 5V RANGE IN D 3 OUT 4 5 GND V REF 2 1196/98 TA01 1 T = 25C A 0 1k 10k 100k 1M INPUT FREQUENCY (Hz) 11968 TA01b 119698fb 1 EFFECTIVE NUMBER OF BITS (ENOBs)LTC1196/LTC1198 ABSOLUTE MAXIMUM RATINGS (Notes 1, 2) Supply Voltage (V ) to GND .................................... 7V Operating Temperature Range CC Voltage LTC1196-1AC, LTC1198-1AC, LTC1196-1BC, Analog Reference ....................... 0.3V to V + 0.3V LTC1198-1BC, LTC1196-2AC, LTC1198-2AC, CC Digital Inputs ......................................... 0.3V to 7V LTC1196-2BC, LTC1198-2BC ................. 0C to 70C Digital Outputs ........................... 0.3V to V + 0.3V Storage Temperature Range .................. 65C to 150C CC Power Dissipation .............................................. 500mW Lead Temperature (Soldering, 10 sec) ................ 300C PIN CONFIGURATION LTC1196 LTC1198 TOP VIEW TOP VIEW CS/ 1 8 V 1 8 V (V ) CS CC CC REF SHUTDOWN +IN 2 7 CLK CH0 2 7 CLK IN 3 6 D CH1 3 6 D OUT OUT GND 4 5 V GND 4 5 D REF IN S8 PACKAGE S8 PACKAGE 8-LEAD PLASTIC SO 8-LEAD PLASTIC SO T = 150C, = 175C/W T = 150C, = 175C/W JMAX JA JMAX JA ORDER INFORMATION LEAD FREE FINISH TAPE AND REEL PART MARKING PACKAGE DESCRIPTION TEMPERATURE RANGE LTC1196-1ACS8 PBF LTC1196-1ACS8 TRPBF 11961A 8-Lead Plastic SO 0C to 70C LTC1196-1BCS8 PBF LTC1196-1BCS8 TRPBF 11961B 8-Lead Plastic SO 0C to 70C LTC1196-2ACS8 PBF LTC1196-2ACS8 TRPBF 11962A 8-Lead Plastic SO 0C to 70C LTC1196-2BCS8 PBF LTC1196-2BCS8 TRPBF 11962B 8-Lead Plastic SO 0C to 70C LTC1198-1ACS8 PBF LTC1198-1ACS8 TRPBF 11981A 8-Lead Plastic SO 0C to 70C LTC1198-1BCS8 PBF LTC1198-1BCS8 TRPBF 11981B 8-Lead Plastic SO 0C to 70C LTC1198-2ACS8 PBF LTC1198-2ACS8 TRPBF 11982A 8-Lead Plastic SO 0C to 70C LTC1198-2BCS8 PBF LTC1198-2BCS8 TRPBF 11982B 8-Lead Plastic SO 0C to 70C Consult LTC Marketing for parts speci ed with wider operating temperature ranges. Consult LTC Marketing for information on non-standard lead based nish parts. For more information on lead free part marking, go to: