LTC1403-1 Datasheet | Linear Technology

FEATURES n 2.8Msps Conversion Rate n Low Power Dissipation: 14m W n 3V Single Supply Operation n 2.5V Internal Bandgap Reference can be Overdriven n 3-Wire Serial Interface n Sleep (10µW) Shutdown Mode n Nap (3m W) Shutdown Mode n 80d B mon Mode Rejection n ±1.25V Bipolar Input Range n Tiny 10-Lead MSE Package APPLICATIONS nmunications n Data Acquisition Systems n Uninterrupted Power Supplies n Multiphase Motor Control n Multiplexed Data Acquisition DESCRIPTION The LTC®1403-1/LTC1403A-1 are 12-bit/14-bit, 2.8Msps serial ADCs with differential inputs. The devices draw only 4.7m A from a single 3V supply and e in a tiny 10-lead MSE package. A Sleep shutdown feature lowers power consumption to 10µW. The bination of speed, low power and tiny package makes the LTC1403-1/LTC1403A‑1 suitable for high speed, portable applications. The 80d B mon mode rejection allows users to eliminate ground loops and mon mode noise by measuring signals differentially from the source. The devices convert - 1.25V to 1.25V bipolar inputs differentially. AIN- extends The absolute voltage swing for AIN+ from ground to the supply voltage. and The serial interface sends out the conversion results during the 16 clock cycles following CONV↑ for patibility 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. L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and Soft Span is a trademark of Linear Technology Corporation. All other trademarks are the property of their respective owners. BLOCK DIAGRAM 10µF 3V AIN+ AIN- 10µF LTC1403A-1 1+ S&H 2- 7 VDD 14-BIT ADC 3 VREF 4 GND 5 2.5V REFERENCE 6 11 EXPOSED PAD THREESTATE SERIAL OUTPUT PORT 8 SDO TIMING LOGIC 10 CONV 9 SCK 14031 TA01a 14-BIT LATCH THD, 2nd, 3rd (d B) THD, 2nd and 3rd vs Input Frequency for Differential Input Signals -...