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LTC1403AIMSE Datasheet(PDF) 1 Page - Linear Technology |
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LTC1403AIMSE Datasheet(HTML) 1 Page - Linear Technology |
1 / 20 page 1 LTC1403/LTC1403A 1403af APPLICATIO S FEATURES DESCRIPTIO BLOCK DIAGRA Serial 12-Bit/14-Bit, 2.8Msps Sampling ADCs with Shutdown s 2.8Msps Conversion Rate s Low Power Dissipation: 14mW s 3V Single Supply Operation s 2.5V Internal Bandgap Reference can be Overdriven s 3-Wire Serial Interface s Sleep (10 µW) Shutdown Mode s Nap (3mW) Shutdown Mode s 80dB Common Mode Rejection s 0V to 2.5V Unipolar Input Range s Tiny 10-Lead MS Package , LTC and LT are registered trademarks of Linear Technology Corporation. s Communications s Data Acquisition Systems s Uninterrupted Power Supplies s Multiphase Motor Control s Multiplexed Data Acquisition 2nd, 3rd and SFDR vs Input Frequency The LTC ®1403/LTC1403A are 12-bit/14-bit, 2.8Msps se- rial ADCs with differential inputs. The devices draw only 4.7mA from a single 3V supply and come in a tiny 10-lead MS package. A Sleep shutdown feature lowers power consumption to 10 µW. The combination of speed, low power and tiny package makes the LTC1403/LTC1403A suitable for high speed, portable applications. The 80dB common mode rejection allows users to elimi- nate ground loops and common mode noise by measuring signals differentially from the source. The devices convert 0V to 2.5V unipolar inputs differen- tially. The absolute voltage swing for +AIN and –AIN extends from ground to the supply voltage. The serial interface sends out the conversion results during the 16 clock cycles following CONV ↑ for compat- ibility with standard serial interfaces. If two additional clock cycles for acquisition time are allowed after the data stream in between conversions, the full sampling rate of 2.8Msps can be achieved with a 50.4MHz clock. – + 1 2 7 3 4 S & H GND EXPOSED PAD LTC1403A VREF 10 µF AIN – AIN + 14-BIT ADC 3V 10 µF 14 8 10 9 THREE- STATE SERIAL OUTPUT PORT 2.5V REFERENCE TIMING LOGIC VDD SDO CONV SCK 1403A TA01 5 6 11 FREQUENCY (MHz) 0.1 –80 –74 –68 –62 –56 1 10 100 1403A TA02 –86 –92 –98 –104 –50 –44 THD 3rd 2nd, SFDR |
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