Datasheet AD8337 (Analog Devices) - 8
| Hersteller | Analog Devices |
| Beschreibung | General-Purpose, Low Cost, DC-Coupled VGA |
| Seiten / Seite | 28 / 8 — AD8337. Data Sheet. VGAIN = 0V. IN = 10mV p-p. VGAIN = +0.7. GAIN = +0.5. … |
| Revision | D |
| Dateiformat / Größe | PDF / 978 Kb |
| Dokumentensprache | Englisch |
AD8337. Data Sheet. VGAIN = 0V. IN = 10mV p-p. VGAIN = +0.7. GAIN = +0.5. VGAIN = +0.2. VGAIN = 0. GAIN = –0.2. VGAIN = –0.5. CL = 47pF C
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AD8337 Data Sheet 30 30 e VGAIN = 0V IN = 10mV p-p 25 VGAIN = +0.7 25 V 20 GAIN = +0.5 20 VGAIN = +0.2 ) ) B 15 B 15 d d ( VGAIN = 0 ( IN IN A A G 10 V 10 GAIN = –0.2 G 5 5 VGAIN = –0.5 CL = 47pF C 0 0 L = 22pF
09
V C
12
GAIN = –0.7 L = 10pF
-0 -0
CL = 0pF –5
5575 5575 0
–5
0
100k 1M 10M 100M 500M 100k 1M 10M 100M 500M FREQUENCY (Hz) FREQUENCY (Hz)
Figure 9. Frequency Response for Various Values of VGAIN Figure 12. Frequency Response for Three Values of CL (See Figure 45) with a 20 Ω Snubbing Resistor (See Figure 45)
20 10 VGAIN = +0.7 VS = ±2.5V VS = ±5V 15 VGAIN = +0.5 8 VGAIN = +0.2 10 VGAIN = 0 ) ) 6 B 5 d B ( V d GAIN = –0.2 ( IN IN A A G 0 G 4 VGAIN = –0.5 –5 VGAIN = –0.7 2 –10 eIN = 10mV p-p
10 13 -0 -0
–15
5575 5575 0
0
0
100k 1M 10M 100M 500M 100k 1M 10M 100M 500M FREQUENCY (Hz) FREQUENCY (Hz)
Figure 10. Frequency Response for Various Values of VGAIN—Inverting Input Figure 13. Frequency Response—Preamp (See Figure 58) (See Figure 46)
30 25 VGAIN = 0V eIN = 10mV p-p 25 20 20 15 s) n ) ( B 15 Y 10 d ( LA E IN A D P G 10 U 5 O GR 5 0 CL = 47pF C 0 L = 22pF –5 C
11
L = 10pF
14 -0 -0
CL = 0pF –5
5575 5575 0
–10
0
100k 1M 10M 100M 500M 1M 10M 100M FREQUENCY (Hz) FREQUENCY (Hz)
Figure 11. Frequency Response for Three Values of CL Figure 14. Group Delay vs. Frequency (See Figure 45) (See Figure 47) Rev. D | 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 TEST CIRCUITS THEORY OF OPERATION OVERVIEW PREAMPLIFIER VGA GAIN CONTROL OUTPUT STAGE ATTENUATOR SINGLE-SUPPLY OPERATION AND AC COUPLING NOISE APPLICATIONS INFORMATION PREAMPLIFIER CONNECTIONS Noninverting Gain Configuration Inverting Gain Configuration DRIVING CAPACITIVE LOADS GAIN CONTROL CONSIDERATIONS THERMAL CONSIDERATIONS PSI (Ψ) BOARD LAYOUT EVALUATION BOARDS CIRCUIT OPTIONS OUTPUT PROTECTION MEASUREMENT SETUP BOARD LAYOUT CONSIDERATIONS OUTLINE DIMENSIONS ORDERING GUIDE
AD8337 Data Sheet 30 30 e VGAIN = 0V IN = 10mV p-p 25 VGAIN = +0.7 25 V 20 GAIN = +0.5 20 VGAIN = +0.2 ) ) B 15 B 15 d d ( VGAIN = 0 ( IN IN A A G 10 V 10 GAIN = –0.2 G 5 5 VGAIN = –0.5 CL = 47pF C 0 0 L = 22pF
09
V C
12
GAIN = –0.7 L = 10pF
-0 -0
CL = 0pF –5
5575 5575 0
–5
0
100k 1M 10M 100M 500M 100k 1M 10M 100M 500M FREQUENCY (Hz) FREQUENCY (Hz)
Figure 9. Frequency Response for Various Values of VGAIN Figure 12. Frequency Response for Three Values of CL (See Figure 45) with a 20 Ω Snubbing Resistor (See Figure 45)
20 10 VGAIN = +0.7 VS = ±2.5V VS = ±5V 15 VGAIN = +0.5 8 VGAIN = +0.2 10 VGAIN = 0 ) ) 6 B 5 d B ( V d GAIN = –0.2 ( IN IN A A G 0 G 4 VGAIN = –0.5 –5 VGAIN = –0.7 2 –10 eIN = 10mV p-p
10 13 -0 -0
–15
5575 5575 0
0
0
100k 1M 10M 100M 500M 100k 1M 10M 100M 500M FREQUENCY (Hz) FREQUENCY (Hz)
Figure 10. Frequency Response for Various Values of VGAIN—Inverting Input Figure 13. Frequency Response—Preamp (See Figure 58) (See Figure 46)
30 25 VGAIN = 0V eIN = 10mV p-p 25 20 20 15 s) n ) ( B 15 Y 10 d ( LA E IN A D P G 10 U 5 O GR 5 0 CL = 47pF C 0 L = 22pF –5 C
11
L = 10pF
14 -0 -0
CL = 0pF –5
5575 5575 0
–10
0
100k 1M 10M 100M 500M 1M 10M 100M FREQUENCY (Hz) FREQUENCY (Hz)
Figure 11. Frequency Response for Three Values of CL Figure 14. Group Delay vs. Frequency (See Figure 45) (See Figure 47) Rev. D | 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 TEST CIRCUITS THEORY OF OPERATION OVERVIEW PREAMPLIFIER VGA GAIN CONTROL OUTPUT STAGE ATTENUATOR SINGLE-SUPPLY OPERATION AND AC COUPLING NOISE APPLICATIONS INFORMATION PREAMPLIFIER CONNECTIONS Noninverting Gain Configuration Inverting Gain Configuration DRIVING CAPACITIVE LOADS GAIN CONTROL CONSIDERATIONS THERMAL CONSIDERATIONS PSI (Ψ) BOARD LAYOUT EVALUATION BOARDS CIRCUIT OPTIONS OUTPUT PROTECTION MEASUREMENT SETUP BOARD LAYOUT CONSIDERATIONS OUTLINE DIMENSIONS ORDERING GUIDE