Linear Technology LT5558
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.| Part No. | LT5558 |
|---|---|
| Datasheet | LT5558 Download |
| Manufacturer |  Linear Technology |
| Description | 600MHz to 1100MHz High Linearity Direct Quadrature Modulator |
| Buy | Stock & Price |
FEATURES
● Direct Conversion from Baseband to RF● High OIP3: + 22.4dBm at 900MHz
● Low Output Noise Floor at 20MHz Offset: No RF: –158dBm/Hz POUT = 4dBm: –152.7dBm/Hz
● 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 Common Mode Voltage
● 16-Lead QFN 4mm × 4mm Package
APPLICATIONS
● RFID Single-Sideband Transmitters● Infrastructure TX for Cellular and ISM Bands
● Image Reject Up-Converters for Cellular Bands
● Low-Noise Variable Phase-Shifter for 600MHz to 1100MHz Local Oscillator Signals
● Microwave Links LT5558 600MHz to 1100MHz High Linearity Direct Quadrature Modulator
DESCRIPTION
It supports GSM, EDGE, CDMA, CDMA2000, and other systems. It may also be configured as an image reject upconverting mixer, by applying 90° phase-shifted signals to the I and Q inputs.
