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LT6350CMS8TRPBF Datasheet(PDF) 1 Page - Linear Technology |
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LT6350CMS8TRPBF Datasheet(HTML) 1 Page - Linear Technology |
1 / 28 page LT6350 1 6350f TYPICAL APPLICATION DESCRIPTION Low Noise Single-Ended to Differential Converter/ADC Driver The LT®6350 is a rail-to-rail input and output low noise single-ended to differential converter/ADC driver featuring fast settling time. It converts a high or low impedance, single-ended input signal to a low impedance, balanced, differential output suitable for driving high performance differential succesive approximation register (SAR) ADCs. The two op amp topology features very low noise op amps, that can support SNR >110dB in a 1MHz bandwidth. The input op amp is trimmed for constant low input-referred voltage offset over the input range to prevent VOS steps from degrading distortion. On a single 5V supply, the outputs can drive ADCs from 55mV to 4.945V on each input. With the addition of a negative supply, the LT6350 can drive ADCs from 0V to 4.945V on each input. Output common mode voltage is set by applying a voltage to the +IN2 pin. The LT6350 draws 4.8mA from a 5V supply and consumes just 60μA in shutdown mode. The LT6350 is available in a compact 3mm × 3mm, 8-pin leadless DFN package and also in an 8-pin MSOP package and operates over a –40°C to 125°C temperature range. 20kHz Sine Wave, –1dBFS 8192-Point FFT FEATURES APPLICATIONS n Rail-to-Rail Input and Outputs n Fast Settling Time: 240ns, 0.01%, 8VP-P Output Step n 1.9nV/√Hz Input-Referred Op Amp Noise n High Impedance Input n –3dB Bandwidth: 33MHz n 2.7V to 12V Supply Operation n No External Gain-Resistors Required n 4.8mA Supply Current n Low Power Shutdown n Low Distortion (HD2/HD3): –102dBc/–97dBc at 100kHz, VOUTDIFF = 4VP-P n Low Offset Voltage: ±400μV Max n High DC Linearity: <±1LSB, 16-Bit, 8VP-P n Low Input Current Noise: 1.1pA/√Hz n 3mm × 3mm 8-Pin DFN and 8-Lead MSOP Packages n 16-Bit and 18-Bit SAR ADC Drivers n Single-Ended to Differential Conversion n Differential Line Driver FREQUENCY (kHz) 0 –140 –30 –10 –20 –60 –50 –40 –70 –80 –90 –110 –100 –120 –130 0 100 200 500 300 6350 TA02 400 V+ = 5V, V– = –5V VOUTDIFF = 7.3VP-P V+IN2 = 2.05V SNR = 94.9dB SINAD = 93.8dB THD = –100.2dB SFDR = 102.2dB + – +IN1 –IN1 V+ V– OUT2 OUT1 SHDN +IN2 VIN 0V to 4V 5V 5V 0.1μF 0.1μF 0.1μF 499Ω 2V –5V LT6350 6350 TA01 249Ω 249Ω 2200pF + – AIN – AIN + LTC2393-16 ADC Driver: Single-Ended Input to Differential Output 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. Protected by U.S. Patents including 5610557, 6344773. |
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