S/(N + D) (dB) LTC1417 Low Power 14-Bit, 400ksps Sampling ADC Converter with Serial I/O FEATURES DESCRIPTIO n 16-Pin Narrow SSOP Package (SO-8 Footprint) The LTC 1417 is a low power, 400ksps, 14-bit A/D con- n Sample Rate: 400ksps verter. This versatile device can operate from a single 5V or n 1.25LSB INL and 1LSB DNL Max 5V supplies. An onboard high performance sample-and- n Power Dissipation: 20mW (Typ) hold, a precision reference and internal trimming minimize n Single Supply 5V or 5V Operation external circuitry requirements. The low 20mW power n Serial Data Output dissipation is made even more attractive with two user- n No Missing Codes Over Temperature selectable power shutdown modes. n Power Shutdown: Nap and Sleep The LTC1417 converts 0V to 4.096V unipolar inputs when n External or Internal Reference using a 5V supply and 2.048V bipolar inputs when using n Differential High Impedance Analog Input 5V supplies. DC specs include 1.25LSB INL, 1LSB n Input Range: 0V to 4.096V or 2.048V DNL and no missing codes over temperature. Outstanding n 81dB S/(N + D) and 95dB THD at Nyquist AC performance includes 81dB S/(N + D) and 95dB THD at a Nyquist input frequency of 200kHz. U APPLICATIO S The internal clock is trimmed for 2m s maximum conver- sion time. A separate convert start input and a data ready n High Speed Data Acquisition signal (BUSY) ease connections to FIFOs, DSPs and n Digital Signal Processing microprocessors. n Isolated Data Acquisition Systems , LTC and LT are registered trademarks of Linear Technology Corporation. n Audio and Telecom Processing n Spectrum Instrumentation EQUIVALE T BLOCK DIAGRA A 400kHz, 14-Bit Sampling A/D Converter in a Narrow 16-Lead SSOP Package 5V Effective Bits and Signal-to-(Noise + Distortion) 10F vs Input Frequency 16 V DD 14 86 LTC1417 80 1 + 12 74 A IN 6 68 S/H 14-BIT ADC 14 EXTCLKIN 2 7 A 10 IN SCLK 62 SERIAL 8 PORT CLKOUT 9 D 8 OUT 4.096V 4 REFCOMP BUFFER 10F 6 14 BUSY 12 4 8k RD 3 2.5V TIMING AND V 13 REF REFERENCE LOGIC CONVST 11 2 1F SHDN 1k 10k 100k 1M 1417 TA01 INPUT FREQUENCY (Hz) 5 AGND 15 V 10 DGND SS 1417 TA02 (0V OR 5V) sn1417 1417fas 1 EFFECTIVE BITS W U ULTC1417 ABSOLUTEXAI U RATI GS PACKAGE/ORDER I FOR ATIO (Notes 1, 2) ORDER Positive Supply Voltage (V ) .................................. 6V DD PART NUMBER TOP VIEW Negative Supply Voltage (V ) SS + A 1 16 V IN DD Bipolar Operation Only .......................... 6V to GND LTC1417ACGN A 2 15 V IN SS Total Supply Voltage (V to V ) LTC1417CGN DD SS V 3 14 BUSY REF Bipolar Operation Only ....................................... 12V LTC1417AIGN REFCOMP 4 13 CONVST Analog Input Voltage (Note 3) LTC1417IGN AGND 5 12 RD Unipolar Operation .................. 0.3V to (V + 0.3V) DD EXTCLKIN 6 11 SHDN Bipolar Operation............ (V 0.3) to (V + 0.3V) SS DD GN PART MARKING SCLK 7 10 DGND Digital Input Voltage (Note 4) CLKOUT 8 9 D OUT 1417A Unipolar Operation ............................... 0.3V to 10V GN PACKAGE 1417 Bipolar Operation.........................(V 0.3V) to 10V 16-LEAD (NARROW) PLASTIC SSOP SS T = 110 C, q = 95 C/W 1417AI Digital Output Voltage JMAX JA 1417I Unipolar Operation ................... 0.3 to (V + 0.3V) DD Bipolar Operation........... (V 0.3V) to (V + 0.3V) SS DD Consult LTC Marketing for parts specified with wider operating temperature ranges. Power Dissipation............................................. 500mW Operating Temperature Range LTC1417AC/LTC1417C ........................... 0 C to 70 C LTC1417AI/LTC1417I ......................... 40 C to 85 C Storage Temperature Range ................ 65 C to 150 C Lead Temperature (Soldering, 10 sec)................. 300 C CO VERTERCCHARA TERISTICS The l indicates specifications which apply over the full operating temperature range, otherwise specifications are at T = 25 C. Specifications are measured while using the internal reference unless A otherwise noted. (Notes 5, 6) LTC1417 LTC1417A PARAMETER CONDITIONS MIN TYP MAX MIN TYP MAX UNITS Resolution l 14 14 Bits No Missing Codes l 13 14 Bits Integral Linearity Error (Note 7) l 0.8 2 0.5 1.25 LSB Differential Linearity Error l 0.7 1.5 0.35 1 LSB Transition Noise (Note 12) 0.33 0.33 LSB RMS Offset Error External Reference (Note 8) l 5 20 2 10 LSB Full-Scale Error Internal Reference 15 60 15 60 LSB External Reference = 2.5V 5 30 5 15 LSB Full-Scale Tempco I = 0, Internal Reference, 0 C T 70 C 15 10 ppm/ C OUT(REF) A I = 0, Internal Reference, 40 C T 85 C 20 ppm/ C OUT(REF) A I = 0, External Reference 5 1 ppm/ C OUT(REF) A ALOG I PUT The l indicates specifications which apply over the full operating temperature range, otherwise specifications are at T = 25 C. (Note 5) A SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS V Analog Input Range (Note 9) 4.75V V 5.25V (Unipolar) l 0 to 4.096 V IN DD 4.75V V 5.25V, 5.25V V 4.75V (Bipolar) l 2.048 V DD SS I Analog Input Leakage Current CONVST = High l 1 m A IN sn1417 1417fas 2 U U U U WU U W W W