The LMX2335U/LMX2336U PLLatinum™ is an ultra low power dual frequency synthesizer for RF personal communications. LMX2335U is 1.2 GHz/1.2 GHz, LMX2336U is 2.0 GHz/1.2 GHz. These two devices are high performance frequency synthesizers with integrated dual modulus prescalers. The LMX2335U/LMX2336U devices are designed for use in applications requiring two RF phase-locked loops. A 64/65 or a 128/129 prescale ratio can be selected for each RF synthesizer. Using a proprietary digital phase locked loop technique, the LMX2335U/LMX2336U devices generate very stable, low noise control signals for the RF voltage controlled oscillators. Both RF synthesizers include two-level programmable charge pump. The RF1 synthesizera has dedicated Fastlock circuitry. Serial data is transferred to the devices via a three wire interface (Data, LE, Clock). Supply voltages from 2.7V to 5.5V are supported. The LMX2335U and the LMX2336U feature very low current consumption: LMX2335U (1.2 GHz)– 3.0 mA, LMX2336U (2.0 GHz)– 3.5 mA at 3.0V. The LMX2335U device is available in 16-pin TSSOP, and 16-pin Chip Scale Package (CSP) surface mount plastic packages. The LMX2336U device is available in 20-Pin TSSOP, 24-Pin CSP, and 20-Pin UTCSP surface mount plastic packages.
The LMX2335U and LMX2336U devices are high-performance frequency synthesizers designed for applications requiring two RF phase-locked loops. They feature integrated dual modulus prescalers with selectable 64/65 or 128/129 ratios and utilize a proprietary digital phase locked loop technique to generate stable, low noise control signals for RF voltage controlled oscillators.
These devices support supply voltages from 2.7V to 5.5V and offer ultra-low current consumption, drawing 3.0 mA for the LMX2335U and 3.5 mA for the LMX2336U at 3.0V. The LMX2335U is available in 16-pin TSSOP and Chip Scale Package (CSP), while the LMX2336U is available in 20-Pin TSSOP, 24-Pin CSP, and 20-Pin UTCSP packages.
| Supply Voltage Range | 2.7V to 5.5V |
|---|---|
| LMX2335U Current Consumption | 3.0 mA at 3.0V |
| LMX2336U Current Consumption | 3.5 mA at 3.0V |
| Operating Temperature Range | -40°C to +85°C |
| RF1 Prescaler Ratio | 64/65 or 128/129 |
| RF2 Prescaler Ratio | 64/65 or 128/129 |
| Charge Pump Current Levels | 0.95 or 3.8 mA |
| Package Types (LMX2335U) | 16-Pin TSSOP and 16-Pin CSP |
| Package Types (LMX2336U) | 20-Pin TSSOP, 24-Pin CSP, and 20-Pin UTCSP |
These devices are designed for use in mobile handsets, cordless handsets, wireless data applications, and cable TV tuners.
Yes, the LMX2336U is an upgrade and compatible with the LMX2335L and LMX2336L devices.
The LMX2335U has a typical current consumption of 1.2 mA at 3.0V in powerdown mode.