Key facts
- Model
- LMX2335
- Category
- Other Electronics
- Documents
- 3
- Languages
- EN
- Last added
- 2012-07-06
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National Semiconductor LMX2335U/LMX2336U PLLatinum Ultra Low Power Dual Frequency Synthesizer Datasheet
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.
National Semiconductor LMX2335 specifications
| 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 |
All National Semiconductor LMX2335 documents by type
Ratings, dimensions and ordering codes, for selection and design work.
- National Semiconductor LMX2335U/LMX2336U PLLatinum Ultra Low Power Dual Frequency Synthesizer Datasheet 48 p
- National Semiconductor LMX2335L/LMX2336L PLLatinum Low Power Dual Frequency Synthesizer Datasheet 22 p
- National Semiconductor LMX2335/LMX2336/LMX2337 PLLatinum Dual Frequency Synthesizer for RF Personal Communications handbook 18 p
Questions answered in these manuals
What are the applications for the LMX2335U and LMX2336U?
These devices are designed for use in mobile handsets, cordless handsets, wireless data applications, and cable TV tuners.
Is the LMX2336U compatible with the LMX2335U?
Yes, the LMX2336U is an upgrade and compatible with the LMX2335L and LMX2336L devices.
What is the typical powerdown current for the LMX2335L/36L?
The typical powerdown current is 1 µA.
From: National Semiconductor LMX2335L/LMX2336L PLLatinum Low Power Dual Frequency Synthesizer Datasheet
What supply voltage range is supported by the LMX2335L/36L?
The devices support a supply voltage range from 2.7V to 5.5V.
From: National Semiconductor LMX2335L/LMX2336L PLLatinum Low Power Dual Frequency Synthesizer Datasheet
What is the supply voltage range for the LMX2335/36/37?
The supply voltage can range from 2.7V to 5.5V.
How many pins does the LMX2336 package have?
The LMX2336 is available in a 20-pin surface mount plastic package.