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LTC6910-2CTS8 Datasheet(PDF) 1 Page - Linear Technology |
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LTC6910-2CTS8 Datasheet(HTML) 1 Page - Linear Technology |
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1 / 24 page  LTC6910-1 LTC6910-2/LTC6910-3 1 6910123fa , LTC and LT are registered trademarks of Linear Technology Corporation. s 3-Bit Digital Gain Control in Three Gain-Code Options s Rail-to-Rail Input Range s Rail-to-Rail Output Swing s Single or Dual Supply: 2.7V to 10.5V Total s 11MHz Gain Bandwidth Product s Input Noise Down to 8nV/ √Hz s System Dynamic Range to 120dB s Input Offset Voltage: 1.5mV s 8-Pin Low Profile (1mm) SOT-23 (ThinSOT™) Package Digitally Controlled Programmable Gain Amplifiers in SOT-23 s Data Acquisition Systems s Dynamic Gain Changing s Automatic Ranging Circuits s Automatic Gain Control The LTC ®6910 family are low noise digitally program- mable gain amplifiers (PGAs) that are easy to use and occupy very little PC board space. The inverting gain is adjustable using a 3-bit digital input to select gains of 0, 1, 2, 5, 10, 20, 50 and 100V/V in the LTC6910-1; 0, 1, 2, 4, 8, 16, 32 and 64V/V in the LTC6910-2; and 0, 1, 2, 3, 4, 5,6 and 7V/V in the LTC6910-3. The LTC6910-Xs are inverting amplifiers with rail-to-rail output. When operated with unity gain, they will also process rail-to-rail input signals. A half-supply reference generated internally at the AGND pin supports single power supply applications. Operating from single or split supplies from 2.7V to 10.5V, the LTC6910-X family is offered in an 8-lead SOT-23 package. Single Supply Programmable Amplifier Frequency Response (LTC6910-1) DESCRIPTIO FEATURES APPLICATIO S TYPICAL APPLICATIO 2 1 3 VIN VOUT = GAIN • VIN AGND 1 µF OR LARGER PIN 2 (AGND) PROVIDES BUILT-IN HALF-SUPPLY REFERENCE WITH INTERNAL RESISTANCE OF 5k. AGND CAN ALSO BE DRIVEN BY A SYSTEM ANALOG GROUND REFERENCE NEAR HALF SUPPLY 6910 TA01 5 4 LTC6910-X 6 8 V+ 2.7V TO 10.5V 0.1 µF G2 G1 G0 7 6910-1 0 –1 –2 –5 –10 –20 –50 –100 6910-2 0 –1 –2 –4 –8 –16 –32 –64 GAIN IN VOLTS/VOLT 6910-3 0 –1 –2 –3 –4 –5 –6 –7 DIGITAL INPUTS G2 0 0 0 0 1 1 1 1 G1 0 0 1 1 0 0 1 1 G0 0 1 0 1 0 1 0 1 FREQUENCY (Hz) 10 30 50 0 20 40 100 10k 100k 1M 10M 6910 TA01b –10 1k GAIN OF 100 (DIGITAL INPUT 111) GAIN OF 1 (DIGITAL INPUT 001) GAIN OF 2 (DIGITAL INPUT 010) GAIN OF 5 (DIGITAL INPUT 011) GAIN OF 10 (DIGITAL INPUT 100) GAIN OF 20 (DIGITAL INPUT 101) GAIN OF 50 (DIGITAL INPUT 110) VS = 10V, VIN = 5mVRMS ThinSOT is a trademark of Linear Technology Corporation. U.S. Patent Number 6121908. |
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