LTC1096/LTC1096L LTC1098/LTC1098L Micropower Sampling 8-Bit Serial I/O A/D Converters FEATURES DESCRIPTION n 80A Maximum Supply Current The LTC 1096/LTC1096L/LTC1098/LTC1098L are n 1nA Typical Supply Current in Shutdown micropower, 8-bit A/D converters that draw only 80A of n 5V Operation (LTC1096/LTC1098) supply current when converting. They automatically power n 3V Operation (LTC1096L/LTC1098L)(2.65V Min) down to 1nA typical supply current whenever they are not n Sample-and-Hold performing conversions. They are packaged in 8-pin SO n 16s Conversion Time packages and have both 3V (L) and 5V versions. These n 33kHz Sample Rate 8-bit, switched-capacitor, successive approximation ADCs n 0.5LSB Total Unadjusted Error Over Temp include sample-and-hold. The LTC1096/LTC1096L have a n Direct 3-Wire Interface to Most MPU Serial Ports and single differential analog input. The LTC1098/LTC1098L All MPU Parallel I/O Ports offer a software selectable 2-channel MUX. n 8-Pin SO Plastic Package On-chip serial ports allow ef cient data transfer to a wide range of microprocessors and microcontrollers over three APPLICATIONS wires. This, coupled with micropower consumption, makes remote location possible and facilitates transmitting data n Battery-Operated Systems through isolation barriers. n Remote Data Acquisition n Battery Monitoring These circuits can be used in ratiometric applications or n Battery Gas Gauges with an external reference. The high impedance analog n Temperature Measurement inputs and the ability to operate with reduced spans (be- n Isolated Data Acquisition low 1V full scale) allow direct connection to sensors and L, LT, LTC and LTM are registered trademarks of Linear Technology Corporation. transducers in many applications, eliminating the need All other trademarks are the property of their respective owners. for gain stages. TYPICAL APPLICATION 10W, S8 Package, 8-Bit A/D Supply Current vs Sample Rate Samples at 200Hz and Runs Off a 5V Battery 1000 T = 25C A 1F 5V V = V = 5V CC REF MPU 100 (e.g., 8051) CS/ V P1.4 CC SHUTDOWN +IN CLK P1.3 ANALOG INPUT LTC1096 0V TO 5V RANGE IN D P1.2 OUT 10 GND V REF 10968 TA01 1 0.1 1 10 100 SAMPLE FREQUENCY, f (kHz) SMPL 10968 TA02 10968fc 1 SUPPLY CURRENT, I (A) CCLTC1096/LTC1096L LTC1098/LTC1098L ABSOLUTE MAXIMUM RATINGS (Notes 1 and 2) Supply Voltage (V ) to GND ...................................12V Operating Temperature CC Voltage LTC1096AC/LTC1096C/LTC1096LC/ Analog and Reference ................ 0.3V to V + 0.3V LTC1098AC/LTC1098C/LTC1098LC .......... 0C to 70C CC Digital Inputs ........................................ 0.3V to 12V LTC1096AI/LTC1096I/LTC1096LI/ Digital Outputs ........................... 0.3V to V + 0.3V LTC1098AI/LTC1098I/LTC1098LI .........40C to 85C CC Power Dissipation ...............................................500mW Lead Temperature (Soldering, 10 sec.) ................. 300C Storage Temperature Range ...................65C to 150C PIN CONFIGURATION (Note 3) LTC1096 LTC1098 TOP VIEW TOP VIEW CS/ CS/ 1 8 V 1 8 V (V CC CC REF) SHUTDOWN 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 N8 PACKAGE S8 PACKAGE N8 PACKAGE S8 PACKAGE 8-LEAD PLASTIC DIP 8-LEAD PLASTIC SOIC 8-LEAD PLASTIC DIP 8-LEAD PLASTIC SOIC T = 150C, = 130C/W (N8) T = 150C, = 130C/W (N8) JMAX JA JMAX JA T = 150C, = 175C/W (S8) T = 150C, = 175C/W (S8) JMAX JA JMAX JA ORDER INFORMATION LEAD FREE FINISH TAPE AND REEL PART MARKING* PACKAGE DESCRIPTION TEMPERATURE RANGE LTC1096ACN8 PBF LTC1096ACN8 TRPBF LTC1096ACN8 8-Lead Plastic DIP 0C to 70C LTC1096ACS8 PBF LTC1096ACS8 TRPBF 1096A 8-Lead Plastic SOIC 0C to 70C LTC1096AIN8 PBF LTC1096AIN8 TRPBF LTC1096AIN8 8-Lead Plastic DIP 40C to 85C LTC1096AIS8 PBF LTC1096AIS8 TRPBF 1096AI 8-Lead Plastic SOIC 40C to 85C LTC1096CN8 PBF LTC1096CN8 TRPBF LTC1096CN8 8-Lead Plastic DIP 0C to 70C LTC1096CS8 PBF LTC1096CS8 TRPBF 1096 8-Lead Plastic SOIC 0C to 70C LTC1096IN8 PBF LTC1096IN8 TRPBF LTC1096IN8 8-Lead Plastic DIP 40C to 85C LTC1096IS8 PBF LTC1096IS8 TRPBF 1096I 8-Lead Plastic SOIC 40C to 85C LTC1096LCS8 PBF LTC1096LCS8 TRPBF 1096L 8-Lead Plastic SOIC 0C to 70C LTC1096LIS8 PBF LTC1096LIS8 TRPBF 1096LI 8-Lead Plastic SOIC 40C to 85C LTC1098ACN8 PBF LTC1098ACN8 TRPBF LTC1098ACN8 8-Lead Plastic DIP 0C to 70C LTC1098ACS8 PBF LTC1098ACS8 TRPBF 1098A 8-Lead Plastic SOIC 0C to 70C LTC1098CN8 PBF LTC1098CN8 TRPBF LTC1098CN8 8-Lead Plastic DIP 0C to 70C LTC1098CS8 PBF LTC1098CS8 TRPBF 1098 8-Lead Plastic SOIC 0C to 70C LTC1098IN8 PBF LTC1098IN8 TRPBF LTC1098IN8 8-Lead Plastic DIP 40C to 85C LTC1098IS8 PBF LTC1098IS8 TRPBF 1098I 8-Lead Plastic SOIC 40C to 85C LTC1098LCS8 PBF LTC1098LCS8 TRPBF 1098L 8-Lead Plastic SOIC 0C to 70C LTC1098LIS8 PBF LTC1098LIS8 TRPBF 1098LI 8-Lead Plastic SOIC 40C to 85C 10968fc 2