n Overview
The AN6494NSA is an orthogonal modulator IC for digital
cellular telephones. It incorporates a phase shifter and an APC
circuit for indirect modulation in the 1.5GHz band. It efficiently
prevents power from leaking to adjacent channels. When pro-
vided with an LC filter, it can efficiently suppress IF-band local
harmonic spurious.
n Features
• Operating supply voltage range : 2.7V to 4.0V
• 1.5GHz indirect modulation
• LO1’s eighth-order harmonic suppression : –65dBc or better
• Output power level : –13dBm
• Variable range : APC = typ. 38dB (at fout=1.5GHz)
• Phase shifter frequency : 178MHz
• Package : SSOP016-P-0225A with 0.65mm pitch
AN6494NSA
Digital Communication Orthogonal Modulator IC
5.00– 0.20
0.65
Unit : mm
SOP package with 16 pins (SSOP016-P-0225A)
16 9
18
1.20
–
0.2
6.40
–
0.30
4.40
–
0.20
0.22
+0.10
–0.05 (0.225)
SEATING PLANE
(1.0)
0 —10˚
0.50– 0.20
0.15
+ 0.10– 0.05
0.10
–
0.10
SEATING PLANE
n Block Diagram
81234567
916 15 14 13 12 11 10
M
LPF
NC
VCC
+
Q Q I I
PO
VAPC
L01
L02