AD8306_15 Datasheet, PDF (4/16 Pages) Analog Devices – 5 MHz–400 MHz 100 dB High Precision Limiting-Logarithmic Amplifier

AD8306–Typical Performance Characteristics
100
10
1
T_A = +25؇C
0.1
T_A = +85؇C
0.01
T_A = –40؇C
0.001
0.0001
0.00001
0.5 0.7 0.9 1.1 1.3 1.5 1.7 1.9 2.1 2.3 2.5
ENABLE VOLTAGE – V
Figure 1. Supply Current vs. Enable Voltage @
T_A = –40°C, +25°C and +85°C
500mV PER
VERTICAL
DIVISION
VLOG
GROUND REFERENCE
INPUT LEVEL
SHOWN IS –3dBV
INPUT
100ns PER HORIZONTAL DIVISION
1V PER
VERTICAL
DIVISION
Figure 4. RSSI Pulse Response for Inputs Stepped from
Zero to –83 dBV, –63 dBV, –43 dBV, –23 dBV, –3 dBV
14
12
10
ADDITIONAL SUPPLY CURRENT
8
6
4
2
LIMITER OUTPUT
CURRENT
0
0 50 100 150 200 250 300 350 400 450
R_LIM – ⍀
Figure 2. Additional Supply Current and Limiter Output
Current vs. R_LIM
500mV PER
VERTICAL
DIVISION
VLOG
GROUND REFERENCE
INPUT
2V PER
VERTICAL
DIVISION
100ns PER HORIZONTAL DIVISION
Figure 5. Large Signal RSSI Pulse Response with R_L = 100 Ω
and C_L = 33 pF, 100 pF and 330 pF (Overlapping Curves)
500mV PER
VERTICAL
DIVISION
VLOG
GROUND REFERENCE
INPUT
2V PER
VERTICAL
DIVISION
100ns PER HORIZONTAL DIVISION
Figure 3. Large Signal RSSI Pulse Response with
C_L = 100 pF and R_L = 50 Ω and 75 Ω (Curves Overlap)
27pF
270pF
200mV PER
VERTICAL
DIVISION
3300pF
VLOG
GROUND REFERENCE
100␮s PER HORIZONTAL DIVISION
Figure 6. Small Signal AC Response of RSSI Output with
External Filter Capacitance of 27 pF, 270 pF and 3300 pF
–4–
REV. A