Datasheet AD8368 (Analog Devices) - 7

Data Sheet AD8368 TYPICAL PERFORMANCE CHARACTERISTICS
VS = 5 V, T = 25°C, system impedance Z0 = 50 Ω, MODE = 5 V, unless otherwise noted.
25 25 4 240MHz 20 1V 20 3 15 15 2 B) 0.75V d 10 +85°C R ( 10 1 ) ) RRO B 5 B d E (d 0.5V ( 5 0 E IN 0 S21 GA ANC 0 –1 RM –5 O 0.25V +25°C –40°C NF –5 –2 –10 O C 0V –15 –10 –3
03 06 0 0 7- 7- 90 90
–20
05
–15 –4
05
10 100 1000 0 0.2 0.4 0.6 0.8 1.0 FREQUENCY (MHz) VGAIN (V)
Figure 3. S21 vs. Frequency by VGAIN Figure 6. Gain and Conformance Error vs. VGAIN (f = 240 MHz)
25 4 25 4 70MHz 380MHz 20 3 20 3 15 2 B) B) d 15 2 d +85°C +85°C R ( R ( 10 1 10 1 ) ) B RRO B RRO d E d E ( 5 0 E ( 5 0 E IN IN GA ANC GA ANC 0 +25°C –1 RM 0 –1 RM O –40°C O +25°C NF –40°C NF –5 –2 O –5 –2 O C C –10 –3 –10 –3
04 07 0 0 7- 7- 90 90
–15 –4
05
–15 –4
05
0 0.2 0.4 0.6 0.8 1.0 0 0.2 0.4 0.6 0.8 1.0 VGAIN (V) VGAIN (V)
Figure 4. Gain and Conformance Error vs. VGAIN (f = 70 MHz) Figure 7. Gain and Conformance Error vs. VGAIN (f = 380 MHz)
25 4 0.7 140MHz 0.6 20 3 0.5 15 2 B) d 0.4 VGAIN +85°C R ( ) 10 1 0.3 V ) ( B RRO d E 0.2 V ( OUTP 5 0 UDE IN NCE IT L 0.1 GA A P 0 –1 RM 0 O AM +25°C –40°C NF –5 –2 –0.1 CO –0.2 –10 –3
5 08 00
–0.3
0 7- 7- 90 90
–15 –4
05
–0.4
05
0 0.2 0.4 0.6 0.8 1.0 –0.5 –0.4 –0.3 –0.2 –0.1 0 0.1 0.2 0.3 0.4 0.5 VGAIN (V) TIME (µs)
Figure 5. Gain and Conformance Error vs. V Figure 8. Gain Step Time Domain Response (6 dB Gain Step) GAIN (f = 140 MHz) Rev. C | Page 7 of 20 Document Outline FEATURES APPLICATIONS FUNCTIONAL BLOCK DIAGRAM GENERAL DESCRIPTION REVISION HISTORY SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS ESD CAUTION PIN CONFIGURATION AND FUNCTION DESCRIPTIONS TYPICAL PERFORMANCE CHARACTERISTICS CIRCUIT DESCRIPTION INPUT ATTENUATOR AND INTERPOLATOR FIXED-GAIN STAGE AND OUTPUT BUFFER OUTPUT OFFSET CORRECTION INPUT AND OUTPUT IMPEDANCES GAIN CONTROL INTERFACE APPLICATIONS INFORMATION VGA OPERATION AGC OPERATION STABILITY AND LAYOUT CONSIDERATIONS EVALUATION BOARD OUTLINE DIMENSIONS ORDERING GUIDE