Datasheet LT1993-2 (Analog Devices) - 9
| Manufacturer | Analog Devices |
| Description | 800MHz Low Distortion, Low Noise Differential Amplifier ADC Driver (Av = 2V/V) |
| Pages / Page | 22 / 9 — Distortion vs Output Amplitude. 70MHz Single-Ended Input,. No RLOAD. … |
| Revision | B |
| File Format / Size | PDF / 2.4 Mb |
| Document Language | English |
Distortion vs Output Amplitude. 70MHz Single-Ended Input,. No RLOAD. RLOAD = 400. RLOAD = 100. Output 1dB Compression
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Text Version of Document
LT1993-2 TYPICAL PERFORMANCE CHARACTERISTICS
Distortion vs Output Amplitude Distortion vs Output Amplitude Distortion vs Output Amplitude 70MHz Single-Ended Input, 70MHz Single-Ended Input, 70MHz Single-Ended Input, No RLOAD RLOAD = 400 RLOAD = 100
–50 –50 –50 –55 –55 –55 HD3 UNFILTERED OUTPUTS HD3 UNFILTERED OUTPUTS HD3 UNFILTERED OUTPUTS –60 –60 –60 HD3 FILTERED OUTPUTS –65 HD3 FILTERED OUTPUTS –65 HD3 FILTERED OUTPUTS –65 –70 –70 –70 –75 –75 –75 –80 –80 –80 HD2 UNFILTERED OUTPUTS DISTORTION (dBc) DISTORTION (dBc) DISTORTION (dBc) –85 –85 –85 HD2 UNFILTERED OUTPUTS HD2 UNFILTERED OUTPUTS –90 –90 –90 HD2 FILTERED OUTPUTS HD2 FILTERED OUTPUTS HD2 FILTERED OUTPUTS –95 –95 –95 –100 –100 –100 –1 1 3 5 7 9 11 –1 1 3 5 7 9 11 –1 1 3 5 7 9 11 OUTPUT AMPLITUDE (dBm) OUTPUT AMPLITUDE (dBm) OUTPUT AMPLITUDE (dBm) 19932 G25 19932 G26 19932 G27
Output 1dB Compression Input Referred Noise Voltage vs vs Frequency Noise Figure vs Frequency Frequency
30 25 12 UNFILTERED OUTPUTS Hz) R 25 LOAD = 400Ω 10 20 20 RLOAD = 100Ω 8 15 15 10 6 10 5 4 NOISE FIGURE (dB) 0 5 2 OUTPUT 1dB COMPRESSION (dBm) –5 VCC = 5V MEASURED USING DC800A DEMO BOARD INPUT REFERRED NOISE VOLTAGE (nV/ –10 0 0 1 10 100 1000 10 100 1000 10 100 1000 FREQUENCY (MHz) FREQUENCY (MHz) FREQUENCY (MHz) 19932 G28 19932 G29 19932 G30
Differential Input Impedance vs Differential Output Impedance vs Isolation vs Frequency Frequency Frequency
–40 100 UNFILTERED OUTPUTS °) 300 UNFILTERED OUTPUTS –50 250 , PHASE Ω 200 ) –60 Ω IMPEDANCE MAGNITUDE 10 150 –70 100 –80 50 ISOLATION (dB) 1 –90 0 OUTPUT IMPEDANCE ( IMPEDANCE PHASE –100 –50 –110 INPUT IMPEDANCE (MAGNITUDE –100 0.1 1 10 100 1000 10000 1 10 100 1000 1 10 100 1000 FREQUENCY (MHz) FREQUENCY (MHz) FREQUENCY (MHz) 19932 G31 19932 G32 19932 G33 Rev B For more information www.analog.com 9
Distortion vs Output Amplitude Distortion vs Output Amplitude Distortion vs Output Amplitude 70MHz Single-Ended Input, 70MHz Single-Ended Input, 70MHz Single-Ended Input, No RLOAD RLOAD = 400 RLOAD = 100
–50 –50 –50 –55 –55 –55 HD3 UNFILTERED OUTPUTS HD3 UNFILTERED OUTPUTS HD3 UNFILTERED OUTPUTS –60 –60 –60 HD3 FILTERED OUTPUTS –65 HD3 FILTERED OUTPUTS –65 HD3 FILTERED OUTPUTS –65 –70 –70 –70 –75 –75 –75 –80 –80 –80 HD2 UNFILTERED OUTPUTS DISTORTION (dBc) DISTORTION (dBc) DISTORTION (dBc) –85 –85 –85 HD2 UNFILTERED OUTPUTS HD2 UNFILTERED OUTPUTS –90 –90 –90 HD2 FILTERED OUTPUTS HD2 FILTERED OUTPUTS HD2 FILTERED OUTPUTS –95 –95 –95 –100 –100 –100 –1 1 3 5 7 9 11 –1 1 3 5 7 9 11 –1 1 3 5 7 9 11 OUTPUT AMPLITUDE (dBm) OUTPUT AMPLITUDE (dBm) OUTPUT AMPLITUDE (dBm) 19932 G25 19932 G26 19932 G27
Output 1dB Compression Input Referred Noise Voltage vs vs Frequency Noise Figure vs Frequency Frequency
30 25 12 UNFILTERED OUTPUTS Hz) R 25 LOAD = 400Ω 10 20 20 RLOAD = 100Ω 8 15 15 10 6 10 5 4 NOISE FIGURE (dB) 0 5 2 OUTPUT 1dB COMPRESSION (dBm) –5 VCC = 5V MEASURED USING DC800A DEMO BOARD INPUT REFERRED NOISE VOLTAGE (nV/ –10 0 0 1 10 100 1000 10 100 1000 10 100 1000 FREQUENCY (MHz) FREQUENCY (MHz) FREQUENCY (MHz) 19932 G28 19932 G29 19932 G30
Differential Input Impedance vs Differential Output Impedance vs Isolation vs Frequency Frequency Frequency
–40 100 UNFILTERED OUTPUTS °) 300 UNFILTERED OUTPUTS –50 250 , PHASE Ω 200 ) –60 Ω IMPEDANCE MAGNITUDE 10 150 –70 100 –80 50 ISOLATION (dB) 1 –90 0 OUTPUT IMPEDANCE ( IMPEDANCE PHASE –100 –50 –110 INPUT IMPEDANCE (MAGNITUDE –100 0.1 1 10 100 1000 10000 1 10 100 1000 1 10 100 1000 FREQUENCY (MHz) FREQUENCY (MHz) FREQUENCY (MHz) 19932 G31 19932 G32 19932 G33 Rev B For more information www.analog.com 9
