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參數(shù)資料
| 型號(hào)： | LMX2332USLEX |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | PLL合成/DDS/VCOs |
| 英文描述： | PLL FREQUENCY SYNTHESIZER, 1200 MHz, PQCC24 |
| 封裝： | PLASTIC, UTCSP-24 |
| 文件頁數(shù)： | 1/49頁 |
| 文件大小： | 4568K |
| 代理商： | LMX2332USLEX |
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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,
24-Pin CSP, and 20-Pin UTCSP surface mount plastic pack-
ages.
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 A 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
IF: 8/9 or 16/17
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, 24-Pin CSP, and 20-Pin
UTCSP
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)
10136680
10136681
10136695
PLLatinum is a trademark of National Semiconductor Corporation.
November 2002
LMX2330U/LMX2331U/LMX2332U
PLLatinum
Ultra
Low
Power
Dual
Frequency
Synthesizer
for
RF
Personal
Communications
2003 National Semiconductor Corporation
DS101366
www.national.com
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LMX2332UTM | 功能描述:IC FREQ SYNTHESIZER DUAL 20TSSOP RoHS:否 類別:集成電路 (IC) >> 時(shí)鐘/計(jì)時(shí) - 時(shí)鐘發(fā)生器，PLL，頻率合成器 系列:PLLatinum™ 標(biāo)準(zhǔn)包裝:39 系列:- 類型:* PLL:帶旁路 輸入:時(shí)鐘 輸出:時(shí)鐘 電路數(shù):1 比率 - 輸入:輸出:1:10 差分 - 輸入:輸出:是/是 頻率 - 最大:170MHz 除法器/乘法器:無/無 電源電壓:2.375 V ~ 3.465 V 工作溫度:0°C ~ 70°C 安裝類型:* 封裝/外殼:* 供應(yīng)商設(shè)備封裝:* 包裝:* |
| LMX2332UTMX | 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 |
| LMX2334ATMX | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| LMX2335 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:PLLatinum⑩ Dual Frequency Synthesizer for RF Personal Communications |
| LMX2335 WAF | 制造商:Texas Instruments 功能描述: |
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