LMX2330L/LMX2331L/LMX2332L are a series of low power dual frequency synthesizers, suitable for RF personal communications. LMX2330L's RF frequency is 2.5 GHz, IF frequency is 510 MHz; LMX2331L's RF frequency is 2.0 GHz, IF frequency is 510 MHz; LMX2332L's RF frequency is 1.2 GHz, IF frequency is 510 MHz. The series of synthesizers use digital phase locked loop technology, combined with a high quality reference oscillator, provide the tuning voltages for voltage controlled oscillators to generate stable, low noise signals for RF and IF local oscillators. Serial data is transferred into the LMX233XL via a three wire interface (Data, Enable, Clock). Supply voltage ranges from 2.7V to 5.5V. The series of synthesizers has very low power consumption; LMX2330L - 5.0 mA at 3V; LMX2331L - 4.0 mA at 3V; LMX2332L - 3.0 mA at 3V. LMX233XL offers TSSOP 20-pin and CSP 24-pin surface mount plastic packages.
The LMX233XL family of monolithic, integrated dual frequency synthesizers, including prescalers, is designed to be used as a local oscillator for the RF and first IF of a dual conversion transceiver. The devices are fabricated using National Semiconductor's 0.5 µm BiCMOS process and employ a digital phase locked loop technique combined with a high quality reference oscillator.
| Power Supply Voltage | 2.7V to 5.5V |
|---|---|
| Power Consumption (LMX2330L RF+IF) | 5.0 mA typical at 3V |
| Power Consumption (LMX2331L RF+IF) | 4.0 mA typical at 3V |
| Power Consumption (LMX2332L RF+IF) | 3.0 mA typical at 3V |
| RF Operating Frequency (LMX2330L) | 0.5 to 2.5 GHz |
| RF Operating Frequency (LMX2331L) | 0.2 to 2.0 GHz |
| RF Operating Frequency (LMX2332L) | 0.1 to 1.2 GHz |
| IF Operating Frequency | 45 to 510 MHz |
| Oscillator Frequency | 5 to 40 MHz |
| Package Types | TSSOP 20-pin and CSP 24-pin |
The typical power consumption for the LMX2330L is 5.0 mA at 3V.
The devices are available in a TSSOP 20-pin and CSP 24-pin surface mount plastic package.