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Part Number: LMX2335L
Description: The LMX2335L and LMX2336L are monolithic, integrated dual frequency synthesizers, including two high f...
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LMX2335L
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General Description
LMX2335L General Description
The LMX2335L and LMX2336L are monolithic, integrated dual frequency synthesizers, including two high frequency prescalers, and are designed for applications requiring two RF phase-lock loops. They are fabricated using National's 0.5 ABiC V silicon BiCMOS process.
The LMX2335L/36L contains two dual modulus prescalers. A 64/65 or a 128/129 prescaler can be selected for each RF synthesizer. A second reference divider chain is included in the IC for improved system noise. The LMX2335L/36L combined with a high quality reference oscillator, two loop filters, and two external voltage controlled oscillators generates very stable low noise RF local oscillator signals.
Serial data is transferred into the LMX2335L/36L via a three wire interface (Data, Enable, Clock). Supply voltage can range from 2.7V to 5.5V. The LMX2335L/36L feature very low current consumption; LMX2335L 4.0 mA at 5V, LMX2336L 5.5 mA at 5V. The LMX2335L is available in SO, TSSOP and CSP 16-pin surface mount plastic packages. The LMX2336L is available in a TSSOP 20-pin and CSP 24-pin surface mount plastic package.
LMX2335L Maximum Ratings
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
Power Supply Voltage
VCC..................................................... −0.3V to +6.5V
VP .......................................................−0.3V to +6.5V
Voltage on Any Pin
with GND = 0V (VI) .......................−0.3V to VCC +0.3V
Storage Temperature Range (TS) .−65°C to +150°C
Lead Temperature (solder 4 sec.) (TL) ..........+260°C
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.
Power Supply Voltage
VCC..................................................... −0.3V to +6.5V
VP .......................................................−0.3V to +6.5V
Voltage on Any Pin
with GND = 0V (VI) .......................−0.3V to VCC +0.3V
Storage Temperature Range (TS) .−65°C to +150°C
Lead Temperature (solder 4 sec.) (TL) ..........+260°C
LMX2335L Features
`Ultra low current consumption
`2.7V to 5.5V operation
`Selectable synchronous and asynchronous powerdown mode: ICC = 1 A (typ)
`Dual modulus prescaler: 64/65 or 128/129
`Selectable charge pump TRI-STATE® mode
`Selectable charge pump current levels
`Selectable Fastlock™ mode
`Upgrade and compatible to LMX2335/36
`Small-outline, plastic, surface mount TSSOP package
`LMX2336 available in CSP package
`2.7V to 5.5V operation
`Selectable synchronous and asynchronous powerdown mode: ICC = 1 A (typ)
`Dual modulus prescaler: 64/65 or 128/129
`Selectable charge pump TRI-STATE® mode
`Selectable charge pump current levels
`Selectable Fastlock™ mode
`Upgrade and compatible to LMX2335/36
`Small-outline, plastic, surface mount TSSOP package
`LMX2336 available in CSP package
LMX2335L Typical Application
·Cellular telephone systems (AMPS, ETACS, RCR-27)
·Cordless telephone systems (DECT, ISM , PHS, CT-1+)
·Personal Communication Systems (DCS-1800, PCN-1900)
·Dual Mode PCS phones
·Cable TV Tuners (CATV)
·Other wireless communication systems
·Cordless telephone systems (DECT, ISM , PHS, CT-1+)
·Personal Communication Systems (DCS-1800, PCN-1900)
·Dual Mode PCS phones
·Cable TV Tuners (CATV)
·Other wireless communication systems
LMX2335L Connection Diagram
LMX2335L
PDF/DataSheet Download
- Datasheet: LMX2335L
- File Size: 555073 KB
- Manufacturer: NSC [National Semiconductor]
- Click here to Download
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