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LTC2302IDDXPBF Datasheet(PDF) 1 Page - Linear Technology |
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LTC2302IDDXPBF Datasheet(HTML) 1 Page - Linear Technology |
1 / 20 page LTC2302/LTC2306 1 23026f TYPICAL APPLICATION FEATURES APPLICATIONS DESCRIPTION Low Noise, 500ksps, 1-/2-Channel, 12-Bit ADCs The LTC ®2302/LTC2306arelownoise,500ksps,1-/2-chan- nel, 12-bit ADCs with an SPI/MICROWIRE compatible serial interface. These ADCs include a fully differential sample-and-hold circuit to reduce common mode noise. The internal conversion clock allows the external serial output data clock (SCK) to operate at any frequency up to 40MHz. The LTC2302/LTC2306 operate from a single 5V supply and draw just 2.8mA at a sample rate of 500ksps. The auto-shutdown feature reduces the supply current to 14μA at a sample rate of 1ksps. The LTC2302/LTC2306 are packaged in a tiny 10-pin 3mm × 3mm DFN. The low power consumption and small size make the LTC2302/LTC2306 ideal for battery-operated and portable applications, while the 4-wire SPI compat- ible serial interface makes these ADCs a good match for isolated or remote data acquisition systems. 8192 Point FFT, fIN = 1kHz (LTC2306) n 12-Bit Resolution n 500ksps Sampling Rate n Low Noise: SINAD = 72.8dB n Guaranteed No Missing Codes n Single 5V Supply n Auto-Shutdown Scales Supply Current with Sample Rate n Low Power: 14mW at 500ksps 70μW at 1ksps 35μW Sleep Mode n 1-Channel (LTC2302) and 2-Channel (LTC2306) Versions n Unipolar or Bipolar Input Ranges (Software Selectable) n Internal Conversion Clock n SPI/MICROWIRE™ Compatible Serial Interface n Separate Output Supply OVDD (2.7V to 5.25V) n Software Compatible with the LTC2308 n 10-Pin (3mm × 3mm) DFN Package 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 TYPE NUMBER OF INPUT CHANNELS 128 Int Reference LTC2308 Ext Reference LTC2302 LTC2306 L, LT, LTC and LTM are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. SDI SDO SCK CONVST 23026 TA01 SERIAL PORT ANALOG INPUT MUX CH0 (IN+) CH1 (IN–) ANALOG INPUTS 0V TO 4.096V UNIPOLAR ±2.048V BIPOLAR VREF 2.7V TO 5.25V SERIAL DATA LINK TO ASIC, PLD, MPU, DSP OR SHIFT REGISTER LTC2302 LTC2306 VDD OVDD GND 0.1μF 5V 12-BIT 500ksps ADC + – 0.1μF PIN NAMES IN PARENTHESIS REFER TO LTC2302 10μF 0.1μF 10μF FREQUENCY (kHz) 0 –40 –20 0 200 23026 TA01b –60 –80 50 100 150 250 –100 –120 –50 –30 –10 –70 –90 –110 –130 –140 fSMPL = 500kHz SINAD = 72.8dB THD = –88.7dB |
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