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參數資料
| 型號： | LMX2330UTM |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | XO, clock |
| 英文描述： | PLLatinum Ultra Low Power Dual Frequency Synthesizer for RF Personal Communications |
| 中文描述： | PLL FREQUENCY SYNTHESIZER, 2500 MHz, PDSO20 |
| 封裝： | 0.173 INCH, PLASTIC, TSSOP-20 |
| 文件頁數： | 1/42頁 |
| 文件大小： | 3318K |
| 代理商： | LMX2330UTM |
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LMX2330U/LMX2331U/LMX2332U
PLLatinum
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 pres-
cale 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 con-
trolled 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 and
24-Pin CSP surface mount plastic packages.
Features
n
Ultra Low Current Consumption
n
Upgrade and Compatible to LMX233xL Family
n
2.7V to 5.5V Operation
n
Selectable Synchronous or Asynchronous Powerdown
Mode:
I
CC-PWDN
= 1 μA typical
n
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
n
Selectable Charge Pump TRI-STATE
Mode
n
Programmable Charge Pump Current Levels
RF and IF: 0.95 or 3.8 mA
n
Selectable Fastlock
Mode for the RF Synthesizer
n
Push-Pull Analog Lock Detect Output
n
Available in 20-Pin TSSOP and 24-Pin Chip Scale
Package (CSP)
IF: 8/9 or 16/17
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)
10136680
10136681
PLLatinum
is a trademark of National Semiconductor Corporation.
July 2002
L
P
2002 National Semiconductor Corporation
DS101366
www.national.com
相關PDF資料 |
PDF描述 |
|---|---|
| LMX2330UTMX | PLLatinum Ultra Low Power Dual Frequency Synthesizer for RF Personal Communications |
| LMX2331USLBX | PLLatinum Ultra Low Power Dual Frequency Synthesizer for RF Personal Communications |
| LMX2331UTM | PLLatinum Ultra Low Power Dual Frequency Synthesizer for RF Personal Communications |
| LMX2331UTMX | PLLatinum Ultra Low Power Dual Frequency Synthesizer for RF Personal Communications |
| LMX2332USLBX | PLLatinum Ultra Low Power Dual Frequency Synthesizer for RF Personal Communications |
相關代理商/技術參數 |
參數描述 |
|---|---|
| LMX2330UTMX | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:PLLatinum Ultra Low Power Dual Frequency Synthesizer for RF Personal Communications |
| LMX2331 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:PLLatinum⑩ Low Power Dual Frequency Synthesizer for RF Personal Communications |
| LMX2331 WAF | 制造商:Texas Instruments 功能描述: |
| LMX2331A | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:PLLatinum⑩ Dual Frequency Synthesizer for RF Personal Communications |
| LMX2331ATM | 制造商:Texas Instruments 功能描述: |
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