Description
19-1606; Rev 0; 1/00 1.7GHz to 2.5GHz, Direct I/Q Modulator with VGA and PA Driver General .
The MAX2720/MAX2721 are low-cost, high-performance, direct I/Q modulators designed for use in widebandCDMA and wireless local-loop (WLL) systems.
Features
* MAX2720/MAX2721
Ordering Information
PART MAX2720EUP MAX2721EUP
* Exposed paddle. TEMP. RANGE -40°C to +85°C -40°C to +85°C PIN-PACKAGE 20 TSSOP-EP
* 20 TSSOP-EP
Applications
* Wireless Local Loop (WLL) Wideband CDMA Systems LMDS/MMDS 2.4GHz Broadband ISM Radios DCS/PCS Base Stations
GND 1 DROUT 2
Functional Diagram
MAX2720/MAX2721
PA DRIVER VGA SHDN 3 VCC 4 GND 5 90° VCC 6 I- 7 I+ 8 LO PHASE SHIFTER 0° 15 VCC 14 Q13 Q+ 12 VCC x2 LO DOUBLER 11 LO Σ 18 PC 17 MODOUT 16 ENX2