AD8476 AD [Analog Devices], AD8476 Datasheet
AD8476
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AD8476 Summary of contents
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... LFCSP and 8-lead MSOP packages fully specified over the −40°C to +125°C temperature range. One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781.329.4700 Fax: 781.461.3113 ©2011–2012 Analog Devices, Inc. All rights reserved. AD8476 10kΩ 10kΩ AD8476 10kΩ 10kΩ ...
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... Removed Low Power ADC Driving Section ............................... 19 Removed Figure 52 ......................................................................... 19 10/11—Revision 0: Initial Version Overview ..................................................................................... 17 Circuit Information .................................................................... 17 DC Precision ............................................................................... 17 Input Voltage Range ................................................................... 18 Driving the AD8476................................................................... 18 Power Supplies ............................................................................ 18 Applications Information .............................................................. 19 Typical Configuration ................................................................ 19 Single-Ended-to-Differential Conversion ............................... 19 Setting the Output Common-Mode Voltage .......................... 19 Low Power ADC Driving .......................................................... 20 Outline Dimensions ...
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... − 0.18 −V + 0.155 +V − − 1 − − 500 0.05 0.05 AD8476 Unit MHz MHz V/µs µs µ dBc µV p-p nV/√Hz V/V % ppm/°C ppm µV µV µV/°C dB µ kΩ kΩ kΩ dB Ω ...
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... AD8476 Parameter Test Conditions/Comments POWER SUPPLY Specified Supply Voltage Operating Supply Voltage Range Supply Current ± Over Temperature −40°C ≤ T TEMPERATURE RANGE Specified Performance Range 1 Includes amplifier voltage and current noise, as well as noise of internal resistors. 2 Includes input bias and offset current errors. ...
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... Exceeding a temperature of 150°C for an extended period may result in a loss of functionality. ESD CAUTION Rev Page values in Table 3 assume a 4-layer JEDEC standard JA θ JA 209.0 78.5 AD8476 Unit °C/W °C/W AD8476 is limited ) on the die ...
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... Negative Supply INP Positive Input. INN INP – AD8476 TOP VIEW VOCM (Not to Scale) +OUT –OUT 4 5 NOTES 1. PINS LABELED NC CAN BE ALLOWED TO FLOAT, BUT IT IS BETTER TO CONNECT THESE PINS TO GROUND. AVOID ROUTING HIGH SPEED SIGNALS THROUGH THESE PINS BECAUSE NOISE COUPLING MAY RESULT ...
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... PINS LABELED NC CAN BE ALLOWED TO FLOAT, BUT IT IS BETTER TO CONNECT THESE PINS TO GROUND. AVOID ROUTING HIGH SPEED SIGNALS THROUGH THESE PINS BECAUSE NOISE COUPLING MAY RESULT. 2. SOLDER THE EXPOSED PADDLE ON THE BACK OF THE PACKAGE TO A GROUND PLANE. Figure 4. 16-Lead LFCSP Pin Configuration Rev Page AD8476 ...
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... AD8476 TYPICAL PERFORMANCE CHARACTERISTICS VOCM connected to 2 NORMALIZED TO 25° –10 –20 –30 –40 –50 –40 –25 – TEMPERATURE (°C) Figure 5. CMRR vs. Temperature 1500 NORMALIZED TO 25°C 1300 1100 900 700 500 300 100 – ...
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... S 10µA 100µA 1mA CURRENT ( ± OUT 2µs/DIV Figure 16. Overdrive Recovery AD8476 95 110 125 10mA ...
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... AD8476 –5 –10 –15 –20 –25 –30 –35 – ±5V S – +5V S –50 100 1k 10k 100k FREQUENCY (Hz) Figure 17. Small Signal Frequency Response for Various Supplies –5 –10 –15 –20 –25 –30 –35 = 10kΩ – 2kΩ R – 200Ω ...
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... FREQUENCY (Hz) 5 POSITIVE OUTPUT NEGATIVE OUTPUT 0 –5 –10 –15 –20 –25 –30 1k 10k 100k VOCM INPUT FREQUENCY (Hz) Figure 27. VOCM Large Signal Frequency Response V = ± + +3V S 500ns/DIV Figure 28. Large Signal Pulse Response for Various Supplies AD8476 10M 1M ...
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... AD8476 500ns/DIV Figure 29. Small Signal Step Response for Various Resistive Loads, V 500ns/DIV Figure 30. Small Signal Step Response for Various Capacitive Loads, V 500ns/DIV Figure 31. VOCM Small Signal Step Response = 10kΩ 2kΩ 200Ω Figure 32. Large Signal Step Response for Various Resistive Loads ± ...
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... Figure 38. Voltage Noise Density vs. Frequency HD2 ( p-p) OUT HD3 ( p-p) OUT HD2 ( p-p) OUT HD3 ( p-p) OUT 100 1k 10k 100k FREQUENCY (Hz) HD2 HD3 p-p) OUT Figure 40. Harmonic Distortion vs kHz OUT,dm AD8476 100k 1M OUT, ...
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... AD8476 0 –10 HD2 (SINGLE-ENDED INPUT) HD3 (SINGLE-ENDED INPUT) –20 HD2 (DIFFERENTIAL INPUT) HD3 (DIFFERENTIAL INPUT) –30 –40 –50 –60 –70 –80 –90 –100 –110 –120 –130 –140 100 1k 10k FREQUENCY (Hz) Figure 41. Harmonic Distortion vs. Input Drive – p-p OUT p-p OUT –85 ...
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... FREQUENCY (Hz) Figure 48. 100 kHz Intermodulation Distortion 1k 100 10 1 0.1 1M 10M 10k 110 115 120 Rev Page POSITIVE OUTPUT NEGATIVE OUTPUT 100k 1M FREQUENCY (Hz) Figure 49. Output Impedance vs. Frequency AD8476 10M ...
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... AD8476 TERMINOLOGY 10kΩ 10kΩ –OUT +IN VOCM AD8476 –IN 10kΩ +OUT 10kΩ Figure 50. Signal and Circuit Definitions Differential Voltage Differential voltage refers to the difference between two node voltages. For example, the output differential voltage (or equivalently, output differential mode voltage) is defined as ...
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... If the two networks are perfectly matched, that is and R P generate any CMRR errors and the differential closed loop gain of the amplifier reduces to v OUT , Rev Page AD8476 AD8476 is highly dependent on the − ...
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... V and as high The ±1 ± stable dc voltage should be used to power the AD8476. Note that noise on the supply pins can adversely affect performance. For more information, see the PSRR performance curve in Figure 10. ...
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... ADCs. Figure 54 shows a typical connection diagram of the AD8476. SINGLE-ENDED-TO-DIFFERENTIAL CONVERSION Many industrial systems have single-ended inputs from input sensors; however, the signals are frequently processed by high performance differential input ADCs for higher precision ...
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... Figure 49). This higher output impedance yields slower settling, thus be certain to choose your capacitance so that the filter still meets the settling requirement at the maximum frequency of interest. AD8476 driving In the application shown, a 100 Ω resistors and 2.2 nF capacitors at each output were chosen. For driving the AD7687, this combination yields an SNR loss of 2 ...
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... Figure 58. 16-Lead Lead Frame Chip Scale Package [LFCSP_WQ × Body, Very Very Thin Quad (CP-16-25) Dimensions shown in millimeters Rev Page 0.80 0.55 0. 1.75 PAD 1. 0.20 MIN FOR PROPER CONNECTIO N OF THE EXPOSED PAD, REFER TO THE PIN CONFIGURATION AND FUNCTION DESCRIPTIONS SECTION OF THIS DATA SHEET. AD8476 ...
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... AD8476ACPZ-RL −40°C to +125°C AD8476ACPZ-WP −40°C to +125°C AD8476BRMZ −40°C to +125°C AD8476BRMZ-R7 −40°C to +125°C AD8476BRMZ-RL −40°C to +125°C AD8476ARMZ −40°C to +125°C AD8476ARMZ-R7 −40°C to +125°C AD8476ARMZ-RL −40°C to +125°C AD8476-EVALZ Z = RoHS Compliant Part ...
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... Data Sheet NOTES Rev Page AD8476 ...
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... AD8476 NOTES ©2011–2012 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. D10195-0-5/12(B) Rev Page Data Sheet ...