LTC1418 Low Power, 14-Bit, 200ksps ADC with Serial and Parallel I/O FEATURES DESCRIPTION n Single Supply 5V or 5V Operation The LTC 1418 is a low power, 200ksps, 14-bit A/D con- n Sample Rate: 200ksps verter. Data output is selectable for 14-bit parallel or serial n 1.25LSB INL and 1LSB DNL Max format. This versatile device can operate from a single 5V n Power Dissipation: 15mW (Typ) or 5V supply. An onboard high performance sample-and- n Parallel or Serial Data Output hold, a precision reference and internal timing minimize n No Missing Codes Over Temperature external circuitry requirements. The low 15mW power n Power Shutdown: Nap and Sleep dissipation is made even more attractive with two user n External or Internal Reference selectable power shutdown modes. n Differential High Impedance Analog Input The LTC1418 converts 0V to 4.096V unipolar inputs from n Input Range: 0V to 4.096V or 2.048V a single 5V supply and 2.048V bipolar inputs from 5V n 81.5dB S/(N + D) and 94dB THD at Nyquist supplies. DC specs include 1.25LSB INL, 1LSB DNL n 28-Lead SSOP Package and no missing codes over temperature. Outstanding AC performance includes 82dB S/(N + D) and 94dB THD at the Nyquist input frequency of 100kHz. APPLICATIONS n The flexible output format allows either parallel or serial Remote Data Acquisition n I/O. The SPI/MICROWIRE compatible serial I/O port can Battery Operated Systems n operate as either master or slave and can support clock Digital Signal Processing n frequencies from DC to 10MHz. A separate convert start Isolated Data Acquisition Systems n input and a data ready signal (BUSY) allow easy control Audio and Telecom Processing n of conversion start and data transfer. Medical Instrumentation 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 Low Power, 200kHz, 14-Bit Sampling A/D Converter Typical INL Curve 5V 1.0 10F V DD SER/PAR LTC1418 0.5 D13 + A IN S/H 14 D5 14-BIT ADC SELECTABLE A D4 (EXTCLKIN) IN SERIAL/ 0 PARALLEL D3 (SCLK) PORT D2 (CLKOUT) 4.096V D1 (D ) REFCOMP OUT BUFFER D0 (EXT/INT) 0.5 10F BUSY 8k CS TIMING AND 2.5V V REF RD 1.0 LOGIC REFERENCE CONVST 0 4096 8192 12288 16384 1F SHDN OUTPUT CODE AGND V DGND 1418 TA02 SS 1418 TA01 (0V OR 5V) 1418fa 1 For more information www.linear.com/LTC1418 INL (LSBs)LTC1418 ABSOLUTE MAXIMUM RATINGS PACKAGE/ORDER INFORMATION (Note 1, 2) TOP VIEW Supply Voltage (V ) .................................................6V DD + A 1 28 V Negative Supply Voltage (V ) DD IN SS A 2 27 V SS Bipolar Operation Only ............................. 6V to GND IN V 3 26 BUSY REF Total Supply Voltage (V to V ) DD SS REFCOMP 4 25 CS Bipolar Operation Only ......................................... 12V AGND 5 24 CONVST Analog Input Voltage (Note 3) D13 (MSB) 6 23 RD Unipolar Operation ................... 0.3V to (V + 0.3V) DD D12 7 22 SHDN Bipolar Operation ...........(V 0.3V) to (V + 0.3V) SS DD D11 8 21 SER/PAR Digital Input Voltage (Note 4) D10 9 20 D0 (EXT/INT) Unipolar Operation ................................. 0.3V to 10V D9 10 19 D1 (D ) OUT Bipolar Operation .........................(V 0.3V) to 10V SS D8 11 18 D2 (CLKOUT) Digital Output Voltage D7 12 17 D3 (SCLK) Unipolar Operation ................... 0.3V to (V + 0.3V) D6 13 16 D4 (EXTCLKIN) DD Bipolar Operation ...........(V 0.3V) to (V + 0.3V) DGND 14 15 D5 SS DD Power Dissipation .............................................. 500mW G PACKAGE OBSOLETE PACKAGE 28-LEAD PLASTIC SSOP N PACKAGE Operation Temperature Range 28-LEAD NARROW PDIP LTC1418C ................................................. 0C to 70C T = 110C, = 95C/W (G) JMAX JA LTC1418I ..............................................40C to 85C T = 110C, = 100C/W (N) JMAX JA Storage Temperature Range .................. 65C to 150C Lead Temperature (Soldering, 10 sec) ...................300C ORDER INFORMATION LEAD FREE FINISH TAPE AND REEL PART MARKING PACKAGE DESCRIPTION TEMPERATURE RANGE LTC1418ACG PBF LTC1418ACG TRPBF 1418ACG 28-Lead Plastic SSOP 0C to 70C LTC1418CG PBF LTC1418CG TRPBF 1418CG 28-Lead Plastic SSOP 0C to 70C LTC1418AIG PBF LTC1418AIG TRPBF 1418AIG 28-Lead Plastic SSOP 40C to 85C LTC1418IG PBF LTC1418IG TRPBF 1418IG 28-Lead Plastic SSOP 40C to 85C OBSOLETE PACKAGE LTC1418ACN PBF LTC1418ACN TRPBF 1418ACN 28-Lead PDIP 0C to 70C LTC1418CN PBF LTC1418CN TRPBF 1418CN 28-Lead PDIP 0C to 70C LTC1418AIN PBF LTC1418AIN TRPBF 1418AIN 28-Lead PDIP 40C to 85C LTC1418IN PBF LTC1418IN TRPBF 1418IN 28-Lead PDIP 40C to 85C Consult LTC Marketing for parts specified with wider operating temperature ranges. Consult LTC Marketing for information on nonstandard lead based finish parts. For more information on lead free part marking, go to: