U2794B_08 Datasheet, PDF (6/15 Pages) ATMEL Corporation – 1000-MHz Quadrature Demodulator

Figure 6-1. Test Circuit
* optional for single-ended tests (notice 3 dB bandwidth of AD620)
T1, T2 = transmission line Z_O = 50Ω.
If no GC function is required, connect Pin 11 to GND.
For high and low gain status GC´ is to be switched to GND respectively to V_S.
Figure 6-2. I and Q phase for f_RF > f_LO. For f_RF < f_LO the phase is inverted.
1.5
1.0
Q
I
0.5
0.0
0
5
10
15
20
25
30
-0.5
-1.0
-1.5
Time (Arbitrary Units)
6 U2794B
4653F–CELL–11/08