CMX998Q1
Cartesian Feed-back Loop Transmitter GEH: VQFN-64*VPE: 260*(RoHS-konform)
Manufacturer Item No.:
CMX998Q1
Item number:
CMX998Q1
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Product Description
A Cartesian Loop improves the efficiency and linearity of transmitters for non-constant envelope modulation systems.
The CMX998 is an integrated solution for a Cartesian Feedback Loop based linear transmitter. Acting as a direct conversion quadrature mixer from I and Q to RF output, it provides the capability to linearize the Power Amplifier (PA) via feedback from the PA's output. Included are forward and feedback paths; local oscillator circuitry including loop phase control; an instability detector and uncommitted op-amps for input signal conditioning.
The device operates from a single 3.3V supply over a temperature range of -40°C to +85°C and is available in a 64-pin VQFN (Q1) package
Features
- Frequency Range 30MHz to 1GHz
- Wide Band Noise -148dBc/Hz
- Gain Control
- Gain Control
- Error Amplifier
- Up Converter Forward Path and Down Converter for Feedback Linearisation
- 360° Loop Phase Shift Control
- DC Offset Measurement Output
- Open Loop Function
- Instability Detector
- C-BUS (SPI compatible) Serial Interface
| Voltage: | 3.0 to 3.6 VDC |
|---|---|
| Form factor: | 64-pin VQFN |
| Temperature: | -40 to +85 °C |
| Dimensions: | 6.0 x 6.0 x 0.9 mm |
| Current: | 135 mA |
| Packaging: | Tray |
| Local Oscillator Input: | 60 to 2000 MHz |
| RF/IF Output: | 100 to 1000 MHz |
| OP Power: | 3.0 dBm |
| C-BUS (SPI) Control Interface: | yes |