LTC2308 Datasheet | Linear Technology

Features n 12-Bit Resolution n 500ksps Sampling Rate n Low Noise: SINAD = 73.3d B n Guaranteed No Missing Codes n Single 5V Supply n Auto-Shutdown Scales Supply Current with Sample Rate n Low Power: 17.5m W at 500ksps 0.9m W Nap Mode 35µW Sleep Mode n Internal Reference n Internal 8-Channel Multiplexer n Internal Conversion Clock n SPI/MICROWIRETM patible Serial Interface n Unipolar or Bipolar Input Ranges (Software Selectable) n Separate Output Supply OVDD (2.7V to 5.25V) n 24-Pin 4mm × 4mm QFN Package APPLICATIONS n High Speed Data Acquisition n Industrial Process Control n Motor Control n Accelerometer Measurements n Battery Operated Instruments n Isolated and/or Remote Data Acquisition LTC2308 Low Noise, 500ksps, 8-Channel, 12-Bit ADC DESCRIPTION The LTC®2308 is a low noise, 500ksps, 8-channel, 12-bit ADC with an SPI/MICROWIRE patible serial interface. This ADC includes an internal reference and a fully differential sample-and-hold circuit to reduce mon mode noise. The internal conversion clock allows the external serial output data clock (SCK) to operate at any frequency up to 40MHz. The LTC2308 operates from a single 5V supply and draws just 3.5m A at a sample rate of 500ksps. The auto-shutdown feature reduces the supply current to 200µA at a sample rate of 1ksps. The LTC2308 is packaged in a small 24-pin 4mm × 4mm QFN. The internal 2.5V reference and 8-channel multiplexer further reduce PCB board space requirements. The low power consumption and small size make the LTC2308 ideal for battery operated and portable applications, while the 4-wire SPI patible serial interface makes this ADC a good match for isolated or remote data acquisition systems. 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 5V 0.1µF 10µF 10µF 0.1µF CH0 CH1 CH2 CH0-CH7 CH3...