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ADA4841-1 Dataheets PDF



Part Number ADA4841-1
Manufacturers Analog Devices
Logo Analog Devices
Description Rail-to-Rail Output Amplifier
Datasheet ADA4841-1 DatasheetADA4841-1 Datasheet (PDF)

Data Sheet Low Power, Low Noise and Distortion, Rail-to-Rail Output Amplifiers ADA4841-1/ADA4841-2 FEATURES Low power: 1.1 mA/amp Low wideband noise 2.1 nV/√Hz 1.4 pA/√Hz Low 1/f noise 7 nV/√Hz @ 10 Hz 13 pA/√Hz @ 10 Hz Low distortion: −105 dBc @ 100 kHz, VO = 2 V p-p High speed 80 MHz, −3 dB bandwidth (G = +1) 12 V/µs slew rate 175 ns settling time to 0.1% Low offset voltage: 0.3 mV maximum Rail-to-rail output Power down Wide supply range: 2.7 V to 12 V APPLICATIONS Low power, low noise signa.

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Data Sheet Low Power, Low Noise and Distortion, Rail-to-Rail Output Amplifiers ADA4841-1/ADA4841-2 FEATURES Low power: 1.1 mA/amp Low wideband noise 2.1 nV/√Hz 1.4 pA/√Hz Low 1/f noise 7 nV/√Hz @ 10 Hz 13 pA/√Hz @ 10 Hz Low distortion: −105 dBc @ 100 kHz, VO = 2 V p-p High speed 80 MHz, −3 dB bandwidth (G = +1) 12 V/µs slew rate 175 ns settling time to 0.1% Low offset voltage: 0.3 mV maximum Rail-to-rail output Power down Wide supply range: 2.7 V to 12 V APPLICATIONS Low power, low noise signal processing Battery-powered instrumentation 16-bit PulSAR® ADC drivers GENERAL DESCRIPTION The ADA4841-1/ADA4841-2 are unity gain stable, low noise and distortion, rail-to-rail output amplifiers that have a quiescent current of 1.5 mA maximum. In spite of their low power consumption, these amplifiers offer low wideband voltage noise performance of 2.1 nV/√Hz and 1.4 pA/√Hz current noise, along with excellent spurious-free dynamic range (SFDR) of −105 dBc at 100 kHz. To maintain a low noise environment at lower frequencies, the amplifiers have low 1/f noise of 7 nV/√Hz and 13 pA/√Hz at 10 Hz. The ADA4841-1/ADA4841-2 output can swing to less than 50 mV of either rail. The input common-mode voltage range extends down to the negative supply. The ADA4841-1/ ADA4841-2 can drive up to 10 pF of capacitive load with minimal peaking. The ADA4841-1/ADA4841-2 provide the performance required to efficiently support emerging 16-bit to 18-bit ADCs and are ideal for portable instrumentation, high channel count, industrial measurement, and medical applications. The ADA4841-1/ ADA4841-2 are ideally suited to drive the AD7685/AD7686, Rev. G Document Feedback Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibilityisassumedbyAnalogDevices for itsuse,nor foranyinfringementsofpatentsor other rights of third parties that may result from its use. Specifications subject to change without notice. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners. CONNECTION DIAGRAMS ADA4841-1 TOP VIEW NC 1 (Not to Scale) 8 POWER DOWN –IN 2 7 +VS +IN 3 6 VOUT –VS 4 5 NC 05614-001 Figure 1. 8-Lead SOIC (R) ADA4841-1 VOUT 1 6 +VS –VS 2 5 POWER DOWN 05614-099 +IN 3 4 –IN Figure 2. 6-Lead SOT-23 (RJ) ADA4841-2 OUT1 1 –IN1 2 +IN1 3 –VS 4 8 +VS 7 OUT2 6 –IN2 5 +IN2 05614-064 TOP VIEW (Not to Scale) NOTES 1. FOR 8-LEAD LFCSP_WD, CONNECT EXPOSED PADDLE TO GND. Figure 3. 8-Lead MSOP (RM), 8-Lead SOIC_N (R), and 8-Lead LFCSP_WD (CP) 16-bit PulSAR ADCs. The ADA4841-1/ADA4841-2 packages feature RoHS compliant lead finishes. The amplifiers are rated to work over the industrial temperature range (−40°C to +125°C). –30 VS = ±5V –40 G = +1 HARMONIC DISTORTION (dBc) –50 –60 –70 2V p-p THIRD –80 –90 –100 2V p-p SECOND 05614-048 –110 –120 0.01 0.1 FREQUENCY (MHz) Figure 4. Harmonic Distortion 1 One.


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