JAJSHP9E November 2007 – July 2019 VCA824
PRODUCTION DATA.
Setting R1 to equal RG, the term that depends only on VIN drops out of the equation, leaving only the term that depends on both VG and VIN. VOUT then follows Equation 11.
The behavior of this circuit is illustrated in Figure 77. Keeping the input amplitude of a 1MHz signal constant and varying the VG voltage (100 kHz, 2 VPP) gives the modulated output voltage shown in Figure 77.