Datasheet AD8335 (Analog Devices) - 7
| Hersteller | Analog Devices |
| Beschreibung | Quad Low Noise, Low Cost Variable Gain Amplifier |
| Seiten / Seite | 28 / 7 — Data Sheet. AD8335. TYPICAL PERFORMANCE CHARACTERISTICS. +85°C. 420 … |
| Revision | B |
| Dateiformat / Größe | PDF / 915 Kb |
| Dokumentensprache | Englisch |
Data Sheet. AD8335. TYPICAL PERFORMANCE CHARACTERISTICS. +85°C. 420 CHANNELS. (105 UNITS). GAIN = 1.5V. HIGH GAIN. S 12. LOW GAIN. +25°C
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Data Sheet AD8335 TYPICAL PERFORMANCE CHARACTERISTICS
VS = 5 V, TA = 25°C, RL = 500 Ω, f = 5 MHz, CL = 10 pF, low gain range (−10 dB to +38 dB), RFB = 249 Ω (PrA RIN = 50 Ω) and signal voltage specified differential, per channel performance, unless otherwise noted.
50 20 +85°C 420 CHANNELS 18 (105 UNITS) 40 V 16 GAIN = 1.5V HIGH GAIN 30 14 ) S 12 B 20 IT d LOW GAIN N ( +25°C U 10 IN 10 GA OF % 8 –40°C 0 6 4 –10 2 –20 0
5
0 0.5 1.0 1.5 2.0 2.5 3.0
020
–0.6 –0.5 –0.4 –0.3 –0.2 –0.1 0 0.1 0.2 0.3 0.4 0.5 0.6
00 6- 6-
V
97 97
GAIN (V)
04
GAIN ERROR (dB)
04 Figure 3. Gain vs. VGAIN at Three Temperatures (See Figure 49) Figure 6. Gain Error Histogram
2.0 25 420 CHANNELS 20 1.5 (105 UNITS) V 15 GAIN = 1.0V 1.0 +85°C, LOW GAIN 10 B) +85°C, HIGH GAIN d 0.5 5 S R ( IT N 0 .0 .9 .8 .7 .6 .5 .4 .3 .2 .1 0 1 2 3 4 5 6 7 8 9 0 0 +25°C, LOW GAIN 0. RRO U 0. 0. 0. 0. 0. 0. 0. 0. 1. F –1 –0 –0 –0 –0 –0 –0 –0 –0 –0 25 N E –40°C, LOW GAIN O AI –0.5 +25°C, HIGH GAIN % VGAIN = 2.0V G 20 –1.0 15 CH1 TO CH2 CH1 TO CH4 –40°C, HIGH GAIN 10 CH1 TO CH3 –1.5 5 –2.0 0 0 0.5 1.0 1.5 2.0 2.5 3.0 0 9 8 7 6 5 4 3 2 1 0 1 2 3 4 5 6 7 8 9 0
-003
0. 0. 0. 0. 0. 0. 0. 0. 0. 1.
06 76
–1. –0. –0. –0. –0. –0. –0. –0. –0. –0.
0
VGAIN (V)
6- 049
CHANNEL-TO-CHANNEL GAIN MATCH (dB)
97 04 Figure 4. Gain Error vs. VGAIN at Three Temperatures (See Figure 49) Figure 7. Gain Match Histogram for VGAIN = 1 V and 2 V
6.0 45 420 CHANNELS 40 (105 UNITS) 0.5V < V 4.0 GAIN < 2.5V 35 ) 2.0 B 5MHz 30 d 20MHz R ( L 25 RO TA 0 R O 20 N E %T AI 1MHz G –2.0 15 10MHz 10 –4.0 5 –6.0
4
0 0 0.5 1.0 1.5 2.0 2.5 3.0
07 -00 0
19.9 20.0 20.1 20.2 20.3 20.4
6- 76
VGAIN (V)
497 049
GAIN SCALING FACTOR
0 Figure 5. Gain Error vs. VGAIN at Various Frequencies (See Figure 49) Figure 8. Gain Scaling Factor Histogram for 0.5 V < VGAIN< 2.5 V Rev. B | Page 7 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
Data Sheet AD8335 TYPICAL PERFORMANCE CHARACTERISTICS
VS = 5 V, TA = 25°C, RL = 500 Ω, f = 5 MHz, CL = 10 pF, low gain range (−10 dB to +38 dB), RFB = 249 Ω (PrA RIN = 50 Ω) and signal voltage specified differential, per channel performance, unless otherwise noted.
50 20 +85°C 420 CHANNELS 18 (105 UNITS) 40 V 16 GAIN = 1.5V HIGH GAIN 30 14 ) S 12 B 20 IT d LOW GAIN N ( +25°C U 10 IN 10 GA OF % 8 –40°C 0 6 4 –10 2 –20 0
5
0 0.5 1.0 1.5 2.0 2.5 3.0
020
–0.6 –0.5 –0.4 –0.3 –0.2 –0.1 0 0.1 0.2 0.3 0.4 0.5 0.6
00 6- 6-
V
97 97
GAIN (V)
04
GAIN ERROR (dB)
04 Figure 3. Gain vs. VGAIN at Three Temperatures (See Figure 49) Figure 6. Gain Error Histogram
2.0 25 420 CHANNELS 20 1.5 (105 UNITS) V 15 GAIN = 1.0V 1.0 +85°C, LOW GAIN 10 B) +85°C, HIGH GAIN d 0.5 5 S R ( IT N 0 .0 .9 .8 .7 .6 .5 .4 .3 .2 .1 0 1 2 3 4 5 6 7 8 9 0 0 +25°C, LOW GAIN 0. RRO U 0. 0. 0. 0. 0. 0. 0. 0. 1. F –1 –0 –0 –0 –0 –0 –0 –0 –0 –0 25 N E –40°C, LOW GAIN O AI –0.5 +25°C, HIGH GAIN % VGAIN = 2.0V G 20 –1.0 15 CH1 TO CH2 CH1 TO CH4 –40°C, HIGH GAIN 10 CH1 TO CH3 –1.5 5 –2.0 0 0 0.5 1.0 1.5 2.0 2.5 3.0 0 9 8 7 6 5 4 3 2 1 0 1 2 3 4 5 6 7 8 9 0
-003
0. 0. 0. 0. 0. 0. 0. 0. 0. 1.
06 76
–1. –0. –0. –0. –0. –0. –0. –0. –0. –0.
0
VGAIN (V)
6- 049
CHANNEL-TO-CHANNEL GAIN MATCH (dB)
97 04 Figure 4. Gain Error vs. VGAIN at Three Temperatures (See Figure 49) Figure 7. Gain Match Histogram for VGAIN = 1 V and 2 V
6.0 45 420 CHANNELS 40 (105 UNITS) 0.5V < V 4.0 GAIN < 2.5V 35 ) 2.0 B 5MHz 30 d 20MHz R ( L 25 RO TA 0 R O 20 N E %T AI 1MHz G –2.0 15 10MHz 10 –4.0 5 –6.0
4
0 0 0.5 1.0 1.5 2.0 2.5 3.0
07 -00 0
19.9 20.0 20.1 20.2 20.3 20.4
6- 76
VGAIN (V)
497 049
GAIN SCALING FACTOR
0 Figure 5. Gain Error vs. VGAIN at Various Frequencies (See Figure 49) Figure 8. Gain Scaling Factor Histogram for 0.5 V < VGAIN< 2.5 V Rev. B | Page 7 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