U2797B Datasheet, PDF (9/13 Pages) TEMIC Semiconductors – 1000-MHz Quadrature Modulator

TELEFUNKEN Semiconductors
U2797B
Application circuit
W x W v ^{Bias network for ac coupled baseband inputs (VBA, VBB).}
R1 = 2.5 k , R2 10 k for 35 dB LO suppression which is in reference to < 2 mV input offset.
R₁
R₂
10
BB_{Ai 9}
BB_Ai
V_Ref PD
13
1
5,6 _VS
Power
down
7 _SPD
8
LOi 14
19
Phase adj. ₂₀
Duty cycle
regenerator
BB_{Bi 11}
BB_Bi ¹²
94 8184 e
PCB layout
U2797B-FS (SSO 20)
Frequency
doubler
0°
90°
90° control
loop
4 ^RFo
2, 3, 15, 16, 17, 18
GND
Rev. A1: 06.09.1995
94 8230 e
9 (13)