LMH6518SQEVK National Semiconductor, LMH6518SQEVK Datasheet
LMH6518SQEVK
Specifications of LMH6518SQEVK
Related parts for LMH6518SQEVK
LMH6518SQEVK Summary of contents
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... The −3 dB bandwidth is 900 MHz at all gains. Gain accuracy at each setting is typically 0.1 dB. When used in conjunction with a National Semiconductor Gsample/second (Gsps) ADC with adjustable full scale (FS) range, the LMH6518 gain adjustment will accommodate full scale input signals from 6 ...
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... Absolute Maximum Ratings If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. ESD Tolerance (Note 5) Human Body Model Machine Model Charge Device Model Supply Voltage V (5V nominal (3.3V nominal) DD Differential Input Input Common Mode Voltage ...
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Symbol Parameter IMD3 Intermodulation Distortion (Note 12) OIP3_1 Intermodulation Intercept (Note 12) P_1dB_main −1 dB Compression P_1dB_aux Gain Parameters A Max Gain V_DIFF_MAX A Min Gain V_DIFF_MIN Gain_Step Gain Step Size Gain Step Size with ADC (See Application Information section) ...
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Symbol Parameter V Voltage range at each output pin OUT_MAX1 (clamped) V OUT_MAX2 V OUT_MAX3 V OUT_MAX4 Z Differential Output Impedance OUT_DIFF V Output Offset Voltage OOS V Output Offset Voltage Shift OOS_shift1 V OOS_shift2 TCV Output Offset Voltage Drift ...
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Symbol Parameter Power Requirements I Supply Current S1 I S1_off I DD Bandwidth Limiting Filter Specifications Filter Parameter 20 MHz Pass Band Tolerance (All Gains) 100 MHz Pass Band Tolerance (All Gains) 200 MHz Pass Band Tolerance (All Gains) 350 ...
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V OOS 23. V O_CM 24. V OS_CM ΔV 25. O_CM 26. ΔV 27. OUT Note 1: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device is ...
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Connection Diagram Ordering Information Package Part Number LMH6518SQ 16-Pin LLP LMH6518SQE LMH6518SQX 16-Pin 30068888 Top View Package Marking Transport Media 1k Units Tape and Reel L6518SQ 250 Units Tape and Reel 4.5k Units Tape and Reel 7 NSC Drawing SQA16A ...
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Typical Performance Characteristics = 1.2V, Single-ended input drive, V AUX V differential (both Main and Auxiliary Outputs), Main output specification (Auxiliary is labeled “Auxiliary”), full bandwidth setting, PP gain = 18.8 dB (Preamp LG ladder attenuation), Full Power ...
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Phase vs. Gain Auxiliary Response Over Temperature 30068855 Response vs. Gain 30068847 Response Over Temperature 30068852 Main vs. Auxiliary Response Phase vs. Gain 9 30068856 30068854 30068848 www.national.com ...
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Response vs. Gain Balance Error Noise vs. Ladder Attenuation www.national.com Phase vs. Gain 30068849 Linear Phase Deviation and Group Delay 30068853 Noise vs. Ladder Attenuation 30068807 10 30068850 30068840 30068837 ...
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Noise Figure vs. Gain 30068838 Input Current Noise vs. Frequency 30068879 HD3 vs. Ladder Attenuation 30068875 Input Voltage Noise vs. Frequency HD2 vs. Ladder Attenuation HD2 vs. Ladder Attenuation 11 30068878 30068874 30068872 www.national.com ...
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HD3 vs. Ladder Attenuation Main and Auxiliary Distortion Comparison Gain vs. Ladder Attenuation www.national.com Main and Auxiliary Distortion Comparison 30068873 Distortion vs. Output Power 30068897 Gain Accuracy vs. Ladder Attenuation 30068871 12 30068896 30068898 30068869 ...
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Auxiliary Gain Accuracy vs. Ladder Attenuation A V_CM A V_CM Gain Matching vs. Ladder Attenuation 30068870 30068858 −1 dB Compression vs. Ladder Attenuation 30068859 13 30068868 A V_CM 30068857 30068876 www.national.com ...
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Step Response Step Response Output Offset Voltage (Typical Unit 1) www.national.com Step Response 30068889 Step Response 30068891 Output Offset Voltage (Typical Unit 2) 30068865 14 30068890 30068892 30068866 ...
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Output Offset Voltage (Typical Unit 3) 30068867 Supply Current vs. Supply Voltage 30068863 Input Bias Current vs. Input CM 30068861 V vs. V OS_CM CM Supply Current vs. Supply Voltage Auxiliary Output Voltage (Hi-Z Mode) 15 30068860 30068864 30068862 www.national.com ...
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Filter BW vs. Gain Output vs. Input Output vs. Input www.national.com Output vs. Input 30068895 Output vs. Input 30068881 Overdrive Recovery Time (Return to Zero) 30068883 16 30068880 30068882 30068893 ...
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... Full Scale, FS, adjustment (through their Extended Control Mode or ECM) to provide near-continuous variability (8.5 mdB resolution) to cover a 42 input range. The National Semiconductor GSample/sec- ond ECM control allows the ADC set using the ADC SPI bus. The ADC FS voltage range is from 560 mV to 840 mV with 9 bits of FS voltage control ...
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FS signal from 6.8 mV LMH6518 input, with 0. 2.62-2) overlap. Assuming a nominal 0.7V output, the LMH6518’s minimum PP FS input swing is limited by the maximum signal path gain possible and vice versa: (or ...
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TABLE 1. Oscilloscope Example Including Front-End Attenuators “S”, Scope Vertical Row Scope FS Input (V ) Scale (V/DIV 8m-24m 1m-3m 2 24m-80m 3m-10m 3 80m-0.8 10m-0.1 4 0.8-8 0.1-1 5 8-80 1-10 In Table 1, the highest FS ...
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Required condition: 0 ECM (ratio) 6. Determine the ECM binary code to be sent on ADC SPI bus: Convert the ECM value represented by the ratio calculated above, to binary: ECM (binary) = DEC2BIN{ECM(ratio)* 511, 9} INPUT/OUTPUT CONSIDERATIONS The ...
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FIGURE 5. Output CM Shift Scheme With the scheme of Figure kept at 1.2V, by proper selection of external resistor values, so that the LMH6518 outputs are not CM-loaded. As was the case with input level shifting, ...
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From Figure 6, the signal path consists of the input impedance switch, the attenuator switch, Low Noise Amplifier (LNA, JFET amplifier) to drive the LMH6518 input (+IN), and the DAC to provide offset adjust. The LNA must have the follow- ...
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FIGURE 8. Serial Interface Protocol- Read Operation FIGURE 9. Serial Interface Protocol- Write Operation FIGURE 10. Read Timing FIGURE 11. Write Timing 23 30068884 30068885 30068886 30068887 www.national.com ...
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D15 D14 D13 D12 D11 (MSB Note: Bits D5, D9, D11-D14 must be “0”. Otherwise, device operation is undefined and specifications are not guaranteed. D15 D14 D13 D12 D11 (MSB ...
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OSCILLOSCOPE TRIGGER APPLICATIONS With the Auxiliary output of the LMH6518 offering a second output that follows the Main one (except for a slightly reduced distortion performance), the oscilloscope trigger function can be implemented by tapping this output. The “V the ...
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Trigger. The result could be a loss of Trigger pulse and/or visual distortion of the displayed waveform. To avoid this sce- nario, the oscilloscope should detect an excessive overdrive and go into trigger-loss mode. Done this way, the oscilloscope display ...
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Table 8 lists other possible JFET candidates that fall in the range of speed (f ) and low noise needed: t TABLE 8. Suitable JFET Candidates Specifications Company Part Number V (V) P Interfet IF140 −2.2 Interfet IF142 −2.2 Interfet ...
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Physical Dimensions www.national.com inches (millimeters) unless otherwise noted 16-Pin Package NS Package Number SQA16A 28 ...
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Notes 29 www.national.com ...
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