AD8312_05 AD [Analog Devices], AD8312_05 Datasheet - Page 10

• Manufacturer Part Number: AD8312_05
• Description: 50 MHz to 3.5 GHz, 45 dB RF Detector
• Manufacturer: AD [Analog Devices]

AD8312
3V
0.1µF
Figure 17. Input Impedance vs. Frequency; No Termination Resistor on RFIN
500mV/
VERT DIV
RISE TIME 85ns
VOUT
RF INPUT
PULSE MODULATION
ROHDE & SCHWARZ
SMT06 GENERATOR
0
+j0.2
–j0.2
Figure 15. VOUT Response Time, RF Off to 0 dBm
1
2
3
NC = NO CONNECT
0.2
RF OUT
+3dB
VPOS
VOUT
VSET
Figure 16. Test Setup for Pulse Response
–j0.5
AD8312
+j0.5
0.5
100ns/HORIZ DIV
COMM
CFLT
RFIN
TRIG OUT
3.5GHz
2.5GHz
6
5
4
1
+j1
–j1
NC
SPLITTER
2.2GHz
PULSED RF
0.1GHz, 0dBm
200mV/VERT DIV
RF
CH1
–3dB
2
52.3Ω
FALL TIME 120ns
1.9GHz
*50Ω TERMINATION
CH3*
–j2
+j2
0.9GHz
–3dB
TEKTRONIX
TDS51504
SCOPE
0.1GHz
TRIG
Rev. 0| Page 10 of 20
20dBm
GENERATOR
HP8648B
SIGNAL
10k
100
VOUT
VPOS
1k
10
1
RF OUT
Figure 19. Test Setup for Power-On and Power-Off Response
Figure 20. Noise Spectral Density of Output; CFLT = Open
1
Figure 18. Power-On and Power-Off Response
1
2
3
NC = NO CONNECT
10MHz
REF OUTPUT
VPOS
VOUT
VSET
3
2V/VERT DIV
500mV/VERT DIV
AD8312
732Ω
AD811
10
COMM
CFLT
1µs/HORIZ DIV
RFIN
FREQUENCY (kHz)
30
TRIG
EXT
6
5
4
100
NC
TEKTRONIX
FET PROBE
49.9Ω
P6204
GENERATOR
HP8116A
300
PULSE
52.3Ω
PULSE
OUT
1k
TEKTRONIX
TRIG
OUT
TDS784C
3k
0dBm
–10dBm
–20dBm
–40dBm
–60dBm
RF OFF
SCOPE
10k
TRIG