Datasheet AD8370 (Analog Devices) - 9
| Hersteller | Analog Devices |
| Beschreibung | 750 MHz Digitally Controlled Variable Gain Amplifier |
| Seiten / Seite | 28 / 9 — Data Sheet. AD8370. 120. 1GHz. +85. 150. –40. +25. 5MHz. 180. OUTPUT IP3 … |
| Revision | B |
| Dateiformat / Größe | PDF / 786 Kb |
| Dokumentensprache | Englisch |
Data Sheet. AD8370. 120. 1GHz. +85. 150. –40. +25. 5MHz. 180. OUTPUT IP3 (dBm). OUTPUT IP3 (dBV rms). 330. 210. S11. 240. 300. 100. 200. 250. 350. 400
Modelllinie für dieses Datenblatt
Textversion des Dokuments
Data Sheet AD8370 34 24 90 32 22 120 1GHz 60 +85
°
C 30 20 28 18 150 –40
°
C 30 26 16 +25
°
C S 24 14 22 5MHz 180 0 22 12 OUTPUT IP3 (dBm) 20 10 OUTPUT IP3 (dBV rms) 330 210 18 8 S11 16 6 240 300 14 4
03692-008
0 50 100 150 200 250 300 350 400 FREQUENCY (MHz) 270
03692-017 Figure 16. Output Third-Order Intercept vs. Frequency at Maximum Gain, Figure 19. Input and Output Reflection Coefficients, S11 and S22, RL = 1 kΩ, VOUT = 2 V p-p Composite Differential ZO = 100 Ω Differential
2.0 250 100 16 DIFFERENT GAIN CODES REPRESENTED 1.5 R+jX FORMAT 200 50 1.0 ) )
Ω Ω
0.5 150 0 –40°C 0 +85°C 100 –50 –0.5 RESISTANCE ( REACTANCE (j GAIN ERROR (dB) –1.0 50 –100 –1.5 ERROR AT –40°C AND +85°C WITH RESPECT TO +25°C. SHADING INDICATES ±3
σ
FROM THE MEAN. DATA BASED ON 30 PARTS FROM ONE BATCH LOT. –2.0
03692-015
0 –150
03692-018
10 100 1000 0 100 200 300 400 500 600 700 FREQUENCY (MHz) FREQUENCY (MHz)
Figure 17. Gain Error over Temperature vs. Frequency, RL = 1 kΩ Figure 20. Input Resistance and Reactance vs. Frequency
0 0 LOW GAIN RL = 1k
Ω
–10 –10 HIGH GAIN RL = 1k
Ω
–20 –20 –30 LOW GAIN, RL = 1k
Ω
–30 HIGH GAIN RL = 100
Ω
LOW GAIN RL = 100
Ω
–40 –40 LOW GAIN, RL = 100
Ω
HIGH GAIN, RL = 100
Ω
–50 –50 –60 –60 –70 HARMONIC DISTORTION (dBc) –70 HARMONIC DISTORTION (dBc) –80 –80 HIGH GAIN, RL = 1k
Ω
–90
03692-016
–90
03692-019
0 20 40 60 80 100 120 140 0 20 40 60 80 100 120 140 GAIN CODE GAIN CODE
Figure 18. Second-Order Harmonic Distortion vs. Gain Code at 70 MHz, Figure 21. Third-Order Harmonic Distortion vs. Gain Code at 70 MHz, VOUT = 2 V p-p Differential VOUT = 2 V p-p Differential Rev. B | Page 9 of 28 Document Outline Features Applications General Description Functional Block Diagram Table of Contents Revision History Specifications Absolute Maximum Ratings ESD Caution Pin Configuration and Function Descriptions Typical Performance Characteristics Theory of Operation Block Architecture Preamplifier Transconductance Stage Output Amplifier Digital Interface and Timing Applications Basic Connections Gain Codes Power-Up Feature Choosing Between Gain Ranges Layout and Operating Considerations Package Considerations Single-Ended-to-Differential Conversion DC-Coupled Operation ADC Interfacing 3 V Operation Evaluation Board and Software Appendix Characterization Equipment Composite Waveform Assumption Definitions of Selected Parameters Outline Dimensions Ordering Guide
°
C 30 20 28 18 150 –40
°
C 30 26 16 +25
°
C S 24 14 22 5MHz 180 0 22 12 OUTPUT IP3 (dBm) 20 10 OUTPUT IP3 (dBV rms) 330 210 18 8 S11 16 6 240 300 14 4
03692-008
0 50 100 150 200 250 300 350 400 FREQUENCY (MHz) 270
03692-017 Figure 16. Output Third-Order Intercept vs. Frequency at Maximum Gain, Figure 19. Input and Output Reflection Coefficients, S11 and S22, RL = 1 kΩ, VOUT = 2 V p-p Composite Differential ZO = 100 Ω Differential
2.0 250 100 16 DIFFERENT GAIN CODES REPRESENTED 1.5 R+jX FORMAT 200 50 1.0 ) )
Ω Ω
0.5 150 0 –40°C 0 +85°C 100 –50 –0.5 RESISTANCE ( REACTANCE (j GAIN ERROR (dB) –1.0 50 –100 –1.5 ERROR AT –40°C AND +85°C WITH RESPECT TO +25°C. SHADING INDICATES ±3
σ
FROM THE MEAN. DATA BASED ON 30 PARTS FROM ONE BATCH LOT. –2.0
03692-015
0 –150
03692-018
10 100 1000 0 100 200 300 400 500 600 700 FREQUENCY (MHz) FREQUENCY (MHz)
Figure 17. Gain Error over Temperature vs. Frequency, RL = 1 kΩ Figure 20. Input Resistance and Reactance vs. Frequency
0 0 LOW GAIN RL = 1k
Ω
–10 –10 HIGH GAIN RL = 1k
Ω
–20 –20 –30 LOW GAIN, RL = 1k
Ω
–30 HIGH GAIN RL = 100
Ω
LOW GAIN RL = 100
Ω
–40 –40 LOW GAIN, RL = 100
Ω
HIGH GAIN, RL = 100
Ω
–50 –50 –60 –60 –70 HARMONIC DISTORTION (dBc) –70 HARMONIC DISTORTION (dBc) –80 –80 HIGH GAIN, RL = 1k
Ω
–90
03692-016
–90
03692-019
0 20 40 60 80 100 120 140 0 20 40 60 80 100 120 140 GAIN CODE GAIN CODE
Figure 18. Second-Order Harmonic Distortion vs. Gain Code at 70 MHz, Figure 21. Third-Order Harmonic Distortion vs. Gain Code at 70 MHz, VOUT = 2 V p-p Differential VOUT = 2 V p-p Differential Rev. B | Page 9 of 28 Document Outline Features Applications General Description Functional Block Diagram Table of Contents Revision History Specifications Absolute Maximum Ratings ESD Caution Pin Configuration and Function Descriptions Typical Performance Characteristics Theory of Operation Block Architecture Preamplifier Transconductance Stage Output Amplifier Digital Interface and Timing Applications Basic Connections Gain Codes Power-Up Feature Choosing Between Gain Ranges Layout and Operating Considerations Package Considerations Single-Ended-to-Differential Conversion DC-Coupled Operation ADC Interfacing 3 V Operation Evaluation Board and Software Appendix Characterization Equipment Composite Waveform Assumption Definitions of Selected Parameters Outline Dimensions Ordering Guide