Datasheet AD8335 (Analog Devices) - 10
| Hersteller | Analog Devices |
| Beschreibung | Quad Low Noise, Low Cost Variable Gain Amplifier |
| Seiten / Seite | 28 / 10 — AD8335. Data Sheet. 1.4. 1.2. f = 10MHz. Hz / V. 1.0. GAIN = 3.0V. n (. … |
| Revision | B |
| Dateiformat / Größe | PDF / 915 Kb |
| Dokumentensprache | Englisch |
AD8335. Data Sheet. 1.4. 1.2. f = 10MHz. Hz / V. 1.0. GAIN = 3.0V. n (. RS = 0Ω. B 40. FB = ∞. O 0.8. E 35. D E. R R 0.6. FIGU E 25. FE E. OIS. 0.4. T U
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AD8335 Data Sheet 1.4 60 55 1.2 f = 10MHz ) 50 Hz / V V 45 1.0 GAIN = 3.0V n ( RS = 0Ω ) E R B 40 FB = ∞ IS (d O 0.8 E 35 N R D E 30 R R 0.6 FIGU E 25 FE E OIS R 20 N 0.4 T U 15 P IN 0.2 10 5 0
0
0 0.1 1 10 100
62 -02
0 0.5 1.0 1.5 2.0 2.5 3.0
06-
FREQUENCY (MHz)
976
V
97 04
GAIN (V)
04 Figure 21. Short-Circuit Input Referred Noise vs. Frequency at Maximum Gain Figure 24. Noise Figure vs. VGAIN for RS = RIN = 50 Ω (See Figure 50)
1k –35 f = 10MHz V T = +85°C –40 OUT = 1V p-p VGAIN = 1.5V 100 –45 HLxx = LOW HD2 HD3 ) Bc) Hz d / ( –50 V N n ( 10 IO E T R IS O –55 T = +25°C T NO S DI HLxx = HIGH –60 1.0 HD2 HD3 T = –40°C –65 0.1 –70
1
0 0.5 1.0 1.5 2.0 2.5 3.0 200 400 600 800 1.0k 1.2k 1.4k 1.6k 1.8k 2.0k
250 -02 6-
V
976 97
GAIN (V) R
04
LOAD (Ω)
04 Figure 22. Input Referred Noise vs. VGAIN at Three Temperatures Figure 25. Harmonic Distortion vs. RLOAD (See Figure 53) (See Figure 50)
10 –20 f = 1MHz, VGAIN = 3V f = 10MHz VOUT = 1V p-p –30 HLxx = LOW Hz) HLxx = HIGH, c) –40 HD3 HD3 V/ B d (n ( E 1.0 IS ION –50 O T N OR T T PU IS D –60 IN RS THERMAL NOISE HLxx = HIGH, ALONE HLxx = LOW, HD2 HD2 –70 0.1 –80
0
1 10 100
22 0
1k 0 10 20 30 40 50
-20 6- 6
SOURCE RESISTANCE (Ω)
97
C
97 04
LOAD (pF)
04 Figure 23. Input Referred Noise vs. RS Figure 26. Harmonic Distortion vs. CLOAD (See Figure 53) Rev. B | Page 10 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 ENABLE SUMMARY PREAMP Noise VGA Optimizing the System Dynamic Range Attenuator Gain Control Output Stage VGA Noise APPLICATIONS INFORMATION ULTRASOUND BASIC CONNECTIONS PREAMP CONNECTIONS INPUT OVERDRIVE Input Overload Protection LOGIC INPUTS COMMON-MODE PINS DRIVING ADCs EVALUATION BOARD BOARD LAYOUT OUTLINE DIMENSIONS ORDERING GUIDE
AD8335 Data Sheet 1.4 60 55 1.2 f = 10MHz ) 50 Hz / V V 45 1.0 GAIN = 3.0V n ( RS = 0Ω ) E R B 40 FB = ∞ IS (d O 0.8 E 35 N R D E 30 R R 0.6 FIGU E 25 FE E OIS R 20 N 0.4 T U 15 P IN 0.2 10 5 0
0
0 0.1 1 10 100
62 -02
0 0.5 1.0 1.5 2.0 2.5 3.0
06-
FREQUENCY (MHz)
976
V
97 04
GAIN (V)
04 Figure 21. Short-Circuit Input Referred Noise vs. Frequency at Maximum Gain Figure 24. Noise Figure vs. VGAIN for RS = RIN = 50 Ω (See Figure 50)
1k –35 f = 10MHz V T = +85°C –40 OUT = 1V p-p VGAIN = 1.5V 100 –45 HLxx = LOW HD2 HD3 ) Bc) Hz d / ( –50 V N n ( 10 IO E T R IS O –55 T = +25°C T NO S DI HLxx = HIGH –60 1.0 HD2 HD3 T = –40°C –65 0.1 –70
1
0 0.5 1.0 1.5 2.0 2.5 3.0 200 400 600 800 1.0k 1.2k 1.4k 1.6k 1.8k 2.0k
250 -02 6-
V
976 97
GAIN (V) R
04
LOAD (Ω)
04 Figure 22. Input Referred Noise vs. VGAIN at Three Temperatures Figure 25. Harmonic Distortion vs. RLOAD (See Figure 53) (See Figure 50)
10 –20 f = 1MHz, VGAIN = 3V f = 10MHz VOUT = 1V p-p –30 HLxx = LOW Hz) HLxx = HIGH, c) –40 HD3 HD3 V/ B d (n ( E 1.0 IS ION –50 O T N OR T T PU IS D –60 IN RS THERMAL NOISE HLxx = HIGH, ALONE HLxx = LOW, HD2 HD2 –70 0.1 –80
0
1 10 100
22 0
1k 0 10 20 30 40 50
-20 6- 6
SOURCE RESISTANCE (Ω)
97
C
97 04
LOAD (pF)
04 Figure 23. Input Referred Noise vs. RS Figure 26. Harmonic Distortion vs. CLOAD (See Figure 53) Rev. B | Page 10 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 ENABLE SUMMARY PREAMP Noise VGA Optimizing the System Dynamic Range Attenuator Gain Control Output Stage VGA Noise APPLICATIONS INFORMATION ULTRASOUND BASIC CONNECTIONS PREAMP CONNECTIONS INPUT OVERDRIVE Input Overload Protection LOGIC INPUTS COMMON-MODE PINS DRIVING ADCs EVALUATION BOARD BOARD LAYOUT OUTLINE DIMENSIONS ORDERING GUIDE