LT5558 Description
The LT®5558 is a direct I/Q modulator designed for high performance wireless applications, including wireless infrastructure. It allows direct modulation of an RF signal using differential baseband I and Q signals. It supports GSM, EDGE, CDMA, CDMA2000, and other systems.
LT5558 Key Features
- Direct Conversion from Baseband to RF
- High OIP3: + 22.4dBm at 900MHz
- Low Output Noise Floor at 20MHz Offset
- Low Carrier Leakage: -43.7dBm at 900MHz
- High Image Rejection: -49dBc at 900MHz
- 3 Channel CDMA2000 ACPR: -70.4dBc at 900MHz
- Integrated LO Buffer and LO Quadrature Phase Generator
- 50Ω AC-Coupled Single-ended LO and RF Ports
- High Impedance Interface to Baseband Inputs with 2.1V mon Mode Voltage
- 16-Lead QFN 4mm × 4mm Package