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Details, datasheet, quote on part number:LMX2332USLEX
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| Part: | LMX2332USLEX |
| Category: | Timing Circuits => PLL (Phase locked loop) => Dual Integer PLLs |
| Description: | LMX2332U - 1.2 GHz/600 MHZ Pllatinum Low Power Dual Frequency Synthesizer For RF Personal Communications, Package: Evaluation Board, Pin Nb=- |
| Company: | National Semiconductor Corporation |
| Datasheet: | Download LMX2332USLEX datasheet File size : 4677 kB |
| Request For quote: | Find where to buy LMX2332USLEX
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Datasheet text preview:
LMX2330U/LMX2331U/LMX2332U PLLatinum Ultra Low Power Dual Frequency Synthesizer for RF Personal Communications
November 2002
LMX2330U/LMX2331U/LMX2332U PLLatinumTM Ultra Low Power Dual Frequency Synthesizer for RF Personal Communications LMX2330U 2.5 GHz/600 MHz LMX2331U 2.0 GHz/600 MHz LMX2332U 1.2 GHz/600 MHz
General Description
The LMX233xU devices are high performance frequency synthesizers with integrated dual modulus prescalers. The LMX233xU devices are designed for use as RF and IF local oscillators for dual conversion radio transceivers. A 32/33 or a 64/65 prescale ratio can be selected for the 2.5 GHz LMX2330U RF synthesizer. A 64/65 or a 128/129 prescale ratio can be selected for both the LMX2331U and LMX2332U RF synthesizers. The IF circuitry contains an 8/9 or a 16/17 prescaler. Using a proprietary digital phase locked loop technique, the LMX233xU devices generate very stable, low noise control signals for RF and IF voltage controlled oscillators. Both the RF and IF synthesizers include a two-level programmable charge pump. The RF synthesizer 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 LMX233xU family features ultra low current consumption: LMX2330U (2.5 GHz) -- 3.3 mA, LMX2331U (2.0 GHz) -- 2.9 mA, LMX2332U (1.2 GHz) -- 2.5 mA at 3.0V. The LMX233xU devices are available in 20-Pin TSSOP, 24-Pin CSP, and 20-Pin UTCSP surface mount plastic packages.
Features
n n n n Ultra Low Current Consumption Upgrade and Compatible to LMX233xL Family 2.7V to 5.5V Operation Selectable Synchronous or Asynchronous Powerdown Mode: ICC-PWDN = 1 µA typical Selectable Dual Modulus Prescaler: LMX2330U RF: 32/33 or 64/65 LMX2331U RF: 64/65 or 128/129 LMX2332U RF: 64/65 or 128/129 LMX2330U/31U/32U IF: 8/9 or 16/17 Selectable Charge Pump TRI-STATE ® Mode Programmable Charge Pump Current Levels RF and IF: 0.95 or 3.8 mA Selectable FastlockTM Mode for the RF Synthesizer Push-Pull Analog Lock Detect Output Available in 20-Pin TSSOP, 24-Pin CSP, and 20-Pin UTCSP
n
n n n n n
Applications
n Mobile Handsets (GSM, GPRS, W-CDMA, CDMA, PCS, AMPS, PDC, DCS) n Cordless Handsets (DECT, DCT) n Wireless Data n Cable TV Tuners
Thin Shrink Small Outline Package (MTC20)
Chip Scale Package (SLB24A)
Ultra Thin Chip Scale Package (SLE20A)
10136695
10136680 10136681
PLLatinumTM is a trademark of National Semiconductor Corporation.
© 2002 National Semiconductor Corporation
DS101366
www.national.com
LMX2330U/LMX2331U/LMX2332U
Functional Block Diagram
10136601
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LMX2330U/LMX2331U/LMX2332U
Connection Diagrams
Chip Scale Package (SLB) (Top View) Thin Shrink Small Outline Package (TM) (Top View)
10136602
10136639
Ultra Thin Chip Scale Package (SLE) (Top View)
10136696
Pin Descriptions
Pin Name VCC Pin No. 20-Pin UTCSP 20 Pin No. 24-Pin CSP 24 Pin No. 20-Pin TSSOP 1 I/O -- Description Power supply bias for the RF PLL analog and digital circuits. VCC may range from 2.7V to 5.5V. Bypass capacitors should be placed as close as possible to this pin and be connected directly to the ground plane. RF PLL charge pump power supply. Must be VCC. RF PLL charge pump output. The output is connected to the external loop filter, which drives the input of the VCO. Ground for the RF PLL digital circuitry. RF PLL prescaler input. Small signal input from the VCO.
VP RF Do RF GND fIN RF
1 2 3 4
2 3 4 5
2 3 4 5
-- O -- I
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