Datasheet LT1993-2 (Analog Devices) - 10
| Manufacturer | Analog Devices |
| Description | 800MHz Low Distortion, Low Noise Differential Amplifier ADC Driver (Av = 2V/V) |
| Pages / Page | 22 / 10 — Input Reflection Coefficient vs. Output Reflection Coefficient vs. … |
| Revision | B |
| File Format / Size | PDF / 2.4 Mb |
| Document Language | English |
Input Reflection Coefficient vs. Output Reflection Coefficient vs. Frequency. PSRR, CMRR vs Frequency
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Text Version of Document
LT1993-2 TYPICAL PERFORMANCE CHARACTERISTICS
Input Reflection Coefficient vs Output Reflection Coefficient vs Frequency Frequency PSRR, CMRR vs Frequency
0 0 100 MEASURED USING DC800A DEMO BOARD MEASURED USING DC800A DEMO BOARD UNFILTERED OUTPUTS –5 –5 90 –10 –10 80 –15 –15 70 –20 –20 60 CMRR –25 –25 50 –30 –30 40 PSRR, CMRR (dB) –35 –35 30 –40 –40 20 PSRR INPUT REFLECTION COEFFICIENT (S11) –45 –45 10 OUTPUT REFLECTION COEFFICIENT (S22) –50 –50 0 10 100 1000 10 100 1000 1 10 100 1000 FREQUENCY (MHz) FREQUENCY (MHz) FREQUENCY (MHz) 19932 G34 19932 G36 19932 G35
Small-Signal Transient Response Large-Signal Transient Response Overdrive Recovery Time
2.28 3.0 4.0 RLOAD = 100Ω PER OUTPUT RLOAD = 100Ω PER OUTPUT 2.26 2.8 3.5 +OUT 2.24 2.6 3.0 2.22 2.4 2.5 2.20 2.2 2.0 RLOAD = 100Ω PER OUTPUT 2.18 2.0 1.5 OUTPUT VOLTAGE (V) OUTPUT VOLTAGE (V) OUTPUT VOLTAGE (V) 2.16 1.8 1.0 2.14 1.6 0.5 –OUT 2.12 1.4 0 0 5 10 15 20 25 30 35 40 45 50 0 5 10 15 20 25 30 35 40 45 50 0 25 50 75 100 125 150 175 200 225 250 TIME (ns) TIME (ns) TIME (ns) 19932 G37 19932 G38 19932 G39
Distortion vs Output Common Mode Voltage LT1993-2 Driving LTC2249 14-Bit ADC Turn-On Time Turn-Off Time
–64 4 FILTERED OUTPUTS, NO R 4 LOAD +OUT +OUT VOUT = 70MHz 2VP-P 3 3 –66 2 2 –OUT –68 –OUT 1 1 –70 0 R 0 LOAD = 100Ω PER OUTPUT HD3 VOLTAGE (V) 4 VOLTAGE (V) 4 ENABLE DISTORTION (dBc) –72 2 2 –74 HD2 ENABLE 0 0 RLOAD = 100Ω PER OUTPUT –76 –2 –2 1.2 1.4 1.6 1.8 2.0 2.2 2.4 2.6 0 125 250 375 500 625 0 125 250 375 500 625 OUTPUT COMMON MODE VOLTAGE (V) TIME (ns) TIME (ns) 19932 G40 19932 G41 19932 G42 Rev B 10 For more information www.analog.com
Input Reflection Coefficient vs Output Reflection Coefficient vs Frequency Frequency PSRR, CMRR vs Frequency
0 0 100 MEASURED USING DC800A DEMO BOARD MEASURED USING DC800A DEMO BOARD UNFILTERED OUTPUTS –5 –5 90 –10 –10 80 –15 –15 70 –20 –20 60 CMRR –25 –25 50 –30 –30 40 PSRR, CMRR (dB) –35 –35 30 –40 –40 20 PSRR INPUT REFLECTION COEFFICIENT (S11) –45 –45 10 OUTPUT REFLECTION COEFFICIENT (S22) –50 –50 0 10 100 1000 10 100 1000 1 10 100 1000 FREQUENCY (MHz) FREQUENCY (MHz) FREQUENCY (MHz) 19932 G34 19932 G36 19932 G35
Small-Signal Transient Response Large-Signal Transient Response Overdrive Recovery Time
2.28 3.0 4.0 RLOAD = 100Ω PER OUTPUT RLOAD = 100Ω PER OUTPUT 2.26 2.8 3.5 +OUT 2.24 2.6 3.0 2.22 2.4 2.5 2.20 2.2 2.0 RLOAD = 100Ω PER OUTPUT 2.18 2.0 1.5 OUTPUT VOLTAGE (V) OUTPUT VOLTAGE (V) OUTPUT VOLTAGE (V) 2.16 1.8 1.0 2.14 1.6 0.5 –OUT 2.12 1.4 0 0 5 10 15 20 25 30 35 40 45 50 0 5 10 15 20 25 30 35 40 45 50 0 25 50 75 100 125 150 175 200 225 250 TIME (ns) TIME (ns) TIME (ns) 19932 G37 19932 G38 19932 G39
Distortion vs Output Common Mode Voltage LT1993-2 Driving LTC2249 14-Bit ADC Turn-On Time Turn-Off Time
–64 4 FILTERED OUTPUTS, NO R 4 LOAD +OUT +OUT VOUT = 70MHz 2VP-P 3 3 –66 2 2 –OUT –68 –OUT 1 1 –70 0 R 0 LOAD = 100Ω PER OUTPUT HD3 VOLTAGE (V) 4 VOLTAGE (V) 4 ENABLE DISTORTION (dBc) –72 2 2 –74 HD2 ENABLE 0 0 RLOAD = 100Ω PER OUTPUT –76 –2 –2 1.2 1.4 1.6 1.8 2.0 2.2 2.4 2.6 0 125 250 375 500 625 0 125 250 375 500 625 OUTPUT COMMON MODE VOLTAGE (V) TIME (ns) TIME (ns) 19932 G40 19932 G41 19932 G42 Rev B 10 For more information www.analog.com
