LTC1404 Complete SO-8, 12-Bit, 600ksps ADC with Shutdown FEATURES DESCRIPTIO Complete 12-Bit ADC in SO-8 The LTC 1404 is a complete 600ksps, 12-bit A/D con- Single Supply 5V or 5V Operation verter which draws only 75mW from 5V or 5V supplies. Sample Rate: 600ksps This easy-to-use device comes complete with a 160ns Power Dissipation: 75mW (Typ) sample-and-hold and a precision reference. Unipolar and 72dB S/(N + D) and 80dB THD at Nyquist bipolar conversion modes add to the flexibility of the ADC. No Missing Codes over Temperature The LTC1404 has two power saving modes: Nap and Nap Mode with Instant Wake-Up: 7.5mW Sleep. In Nap mode, it consumes only 7.5mW of power Sleep Mode: 60W and can wake up and convert immediately. In the Sleep High Impedance Analog Input mode, it consumes 60W of power typically. Upon power- Input Range (1mV/LSB): 0V to 4.096V or 2.048V up from Sleep mode, a reference ready (REFRDY) signal Internal Reference Can Be Overdriven Externally is available in the serial data word to indicate that the 3-Wire Interface to DSPs and Processors (SPI and reference has settled and the chip is ready to convert. TM MICROWIRE Compatible) The LTC1404 converts 0V to 4.096V unipolar inputs from U a single 5V supply and 2.048V bipolar inputs from 5V APPLICATIO S supplies. Maximum DC specs include 1LSB INL, 1LSB DNL and 45ppm/C full-scale drift over temperature. High Speed Data Acquisition Guaranteed AC performance includes 69dB S/(N + D) Digital Signal Processing and 76dB THD at an input frequency of 100kHz over Multiplexed Data Acquisition Systems temperature. Audio and Telecom Processing Digital Radio The 3-wire serial port allows compact and efficient data Spectrum Analysis transfer to a wide range of microprocessors, microcontrollers Low Power and Battery-Operated Systems and DSPs. , LT, LTC and LTM are registered trademarks of Linear Technology Corporation. Handheld or Portable Instruments All other trademarks are the property of their respective owners. TYPICAL APPLICATIO Power Consumption vs Sample Rate Single 5V Supply, 600kHz, 12-Bit Sampling A/D Converter 100 5V NORMAL CONVERSION V V CC SS 10 + NAP MODE 10F* 0.1F BETWEEN CONVERSION MPU LTC1404 1 ANALOG INPUT A CONV P1.4 IN (0V TO 4.096V) SLEEP MODE REF OUT 0.1 V REF CLK P1.3 BETWEEN CONVERSION 2.43V + 10F 0.1F GND D P1.2 OUT SERIAL 0.01 DATA LINK 9.6MHz CLOCK *AVX TPSD106M035R0300 LTC1404 TA01 0.001 0.01 0.1 1 10 100 1k 10k 100k 1M SAMPLE RATE (Hz) LTC1404 TA02 1404fa 1 SUPPLY CURRENT (mA) U ULTC1404 ABSOLUTE MAXIMUM RATINGS PACKAGE/ORDER INFORMATION (Notes 1, 2) TOP VIEW Supply Voltage (V ) ................................................. 7V CC Negative Supply Voltage (V ) ................... 6V to GND V 1 8 V CC SS SS A CONV Total Supply Voltage (V to V ) 2 7 IN CC SS V CLK Bipolar Operation Only ........................................ 12V REF 3 6 GND D Analog Input Voltage (Note 3) 4 5 OUT Unipolar Operation .................. 0.3V to (V + 0.3V) CC S8 PACKAGE 8-LEAD PLASTIC SO Bipolar Operation........... (V 0.3V) to (V + 0.3V) SS CC T = 125C, = 130C/W JMAX JA Digital Input Voltage (Note 4) Unipolar Operation ................................0.3V to 12V S8 PART MARKING ORDER PART NUMBER Bipolar Operation.........................(V 0.3V) to 12V SS LTC1404CS8 1404 Digital Output Voltage LTC1404IS8 1404I Unipolar Operation .................. 0.3V to (V + 0.3V) CC Bipolar Operation........... (V 0.3V) to (V + 0.3V) SS CC Order Options Tape and Reel: Add TR Power Dissipation.............................................. 300mW Lead Free: Add PBF Lead Free Tape and Reel: Add TRPBF Operating Ambient Temperature Range Lead Free Part Marking: