Datasheet AD8370 (Analog Devices) - 8
| 制造商 | Analog Devices |
| 描述 | 750 MHz Digitally Controlled Variable Gain Amplifier |
| 页数 / 页 | 28 / 8 — AD8370. Data Sheet. 2.0. LOW GAIN MODE. 100. LOAD. 1.5. HIGH GAIN MODE. … |
| 修订版 | B |
| 文件格式/大小 | PDF / 786 Kb |
| 文件语言 | 英语 |
AD8370. Data Sheet. 2.0. LOW GAIN MODE. 100. LOAD. 1.5. HIGH GAIN MODE. 1.0. 0.5. –40°C. +85°C. –0.5. GAIN ERROR (dB). OUTPUT P1dB (dB)
该数据表的模型线
文件文字版本
AD8370 Data Sheet 20 2.0 LOW GAIN MODE 100
Ω
LOAD 1.5 16 HIGH GAIN MODE LOW GAIN MODE 1.0 12 1k
Ω
LOAD 0.5 HIGH GAIN MODE 8 –40°C 0 4 +85°C –0.5 GAIN ERROR (dB) OUTPUT P1dB (dB) 0 UNIT CONVERSION NOTE: –1.0 FOR 100
Ω
LOAD: dBV rms = dBm–10dB FOR 1k
Ω
LOAD: dBV rms = dBm ERROR AT –40°C AND +85°C WITH RESPECT TO +25°C. –4 –1.5 SHADING INDICATES ±3
σ
FROM THE MEAN. DATA SHADING INDICATES ±3
σ
FROM THE BASED ON 30 PARTS FROM ONE BATCH LOT. MEAN. DATA BASED ON 30 PARTS FROM TWO BATCH LOTS. –2.0
03692-012
–8
03692-010
10 100 1000 0 20 40 60 80 100 120 140 FREQUENCY (MHz) GAIN CODE
Figure 10. Output P1dB vs. Gain Code at 70 MHz Figure 13. Gain Error over Temperature vs. Frequency, RL = 100 Ω
0 –50 20 18 +25°C, 100
Ω
LOAD –10 –60 18 +85°C, 100
Ω
LOAD 16 –20 –70 HIGH GAIN MODE 16 14 –30 –80 –40°C, +85°C UNIT CONVERSION NOTE: –40 –90 14 RE 100
Ω
LOAD: dBV rms = dBm – 10dB 12 RE 1k
Ω
LOAD: dBV rms = dBm –50 –100 –40°C, 100
Ω
LOAD 12 10 +25°C, 1k
Ω
LOAD –60 –110 10 8 –70 –120 OUTPUT P1dB (dBm) +25°C +85°C, 1k
Ω
LOAD LOW GAIN MODE OUTPUT IMD (dBc) LOW GAIN MODE HIGH GAIN MODE OUTPUT IMD (dBc) –80 –130 OUTPUT P1dB (dBm) 8 6 SHADING INDICATES ±3
σ
FROM THE MEAN. DATA BASED ON 30 –90 –140
03692-011
PARTS FROM TWO BATCH LOTS. –40°C, 1k
Ω
LOAD 0 20 40 60 80 100 120 140 6 4
03692-013
GAIN CODE 0 50 100 150 200 250 300 350 400 FREQUENCY (MHz)
Figure 11. Two-Tone Output IMD3 vs. Gain Code at 70 MHz, Figure 14. Output P1dB vs. Frequency RL = 1 kΩ, VOUT = 2 V p-p Composite Differential
35 25 –50 –52 30 20 –54 –56 25 15 –58 HIGH GAIN –60 MODE –62 20 10 –64 –66 15 5 LOW GAIN –68 –40
°
C MODE –70 10 0 –72 OUTPUT IP3 (dBm) OUTPUT IMD (dBc) OUTPUT IP3 (dBV rms) –74 5 –5 +25
°
C –76 –78 +85
°
C 0 –10 –80 –82 –5 –15
03692-005
–84
03692-014
0 20 40 60 80 100 120 140 0 50 100 150 200 250 300 350 400 GAIN CODE FREQUENCY (MHz)
Figure 12. Output Third-Order Intercept vs. Gain Code at 70 MHz, Figure 15. Two-Tone Output IMD3 vs. Frequency at Maximum Gain, RL = 1 kΩ, VOUT = 2 V p-p Composite Differential RL = 1 kΩ, VOUT = 2 V p-p Composite Differential Rev. B | Page 8 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
Ω
LOAD 1.5 16 HIGH GAIN MODE LOW GAIN MODE 1.0 12 1k
Ω
LOAD 0.5 HIGH GAIN MODE 8 –40°C 0 4 +85°C –0.5 GAIN ERROR (dB) OUTPUT P1dB (dB) 0 UNIT CONVERSION NOTE: –1.0 FOR 100
Ω
LOAD: dBV rms = dBm–10dB FOR 1k
Ω
LOAD: dBV rms = dBm ERROR AT –40°C AND +85°C WITH RESPECT TO +25°C. –4 –1.5 SHADING INDICATES ±3
σ
FROM THE MEAN. DATA SHADING INDICATES ±3
σ
FROM THE BASED ON 30 PARTS FROM ONE BATCH LOT. MEAN. DATA BASED ON 30 PARTS FROM TWO BATCH LOTS. –2.0
03692-012
–8
03692-010
10 100 1000 0 20 40 60 80 100 120 140 FREQUENCY (MHz) GAIN CODE
Figure 10. Output P1dB vs. Gain Code at 70 MHz Figure 13. Gain Error over Temperature vs. Frequency, RL = 100 Ω
0 –50 20 18 +25°C, 100
Ω
LOAD –10 –60 18 +85°C, 100
Ω
LOAD 16 –20 –70 HIGH GAIN MODE 16 14 –30 –80 –40°C, +85°C UNIT CONVERSION NOTE: –40 –90 14 RE 100
Ω
LOAD: dBV rms = dBm – 10dB 12 RE 1k
Ω
LOAD: dBV rms = dBm –50 –100 –40°C, 100
Ω
LOAD 12 10 +25°C, 1k
Ω
LOAD –60 –110 10 8 –70 –120 OUTPUT P1dB (dBm) +25°C +85°C, 1k
Ω
LOAD LOW GAIN MODE OUTPUT IMD (dBc) LOW GAIN MODE HIGH GAIN MODE OUTPUT IMD (dBc) –80 –130 OUTPUT P1dB (dBm) 8 6 SHADING INDICATES ±3
σ
FROM THE MEAN. DATA BASED ON 30 –90 –140
03692-011
PARTS FROM TWO BATCH LOTS. –40°C, 1k
Ω
LOAD 0 20 40 60 80 100 120 140 6 4
03692-013
GAIN CODE 0 50 100 150 200 250 300 350 400 FREQUENCY (MHz)
Figure 11. Two-Tone Output IMD3 vs. Gain Code at 70 MHz, Figure 14. Output P1dB vs. Frequency RL = 1 kΩ, VOUT = 2 V p-p Composite Differential
35 25 –50 –52 30 20 –54 –56 25 15 –58 HIGH GAIN –60 MODE –62 20 10 –64 –66 15 5 LOW GAIN –68 –40
°
C MODE –70 10 0 –72 OUTPUT IP3 (dBm) OUTPUT IMD (dBc) OUTPUT IP3 (dBV rms) –74 5 –5 +25
°
C –76 –78 +85
°
C 0 –10 –80 –82 –5 –15
03692-005
–84
03692-014
0 20 40 60 80 100 120 140 0 50 100 150 200 250 300 350 400 GAIN CODE FREQUENCY (MHz)
Figure 12. Output Third-Order Intercept vs. Gain Code at 70 MHz, Figure 15. Two-Tone Output IMD3 vs. Frequency at Maximum Gain, RL = 1 kΩ, VOUT = 2 V p-p Composite Differential RL = 1 kΩ, VOUT = 2 V p-p Composite Differential Rev. B | Page 8 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