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参数资料
| 型号： | LMX2353TMX/NOPB |
| 厂商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分类： | PLL合成/DDS/VCOs |
| 英文描述： | PHASE LOCKED LOOP, 2500 MHz, PDSO16 |
| 封装： | LEAD FREE, PLASTIC, TSSOP-16 |
| 文件页数： | 6/16页 |
| 文件大小： | 209K |
| 代理商： | LMX2353TMX/NOPB |
2.0 Programming Description (Continued)
The low gain or steadystate mode for fastlocking is defined to be whenever the charge pump current selected is less than 900
A. The high gain or acquisition mode is defined to be whenever the charge pump current is greater or equal to 900 A. (The logic
setting of the CP_8X bit determines which of the two gain modes the user is in.) During the acquisition phase when the CP_8X
bit is set to a HIGH state, the OUT0 output becomes active LOW thereby altering the loop’s damping resistance.
The acquisition phase is terminated by setting the CP_8X bit LOW resulting in the OUT0 output being OFF or TRI-STATE. When
in fastlock mode, the OUT_0 and OUT_1 bits are don’t care bits, and the OUT1 output is at TRI-STATE.
TEST MODE: The OUT0/OUT1 test mode occurs when the TEST bit (F2_17) is set HIGH. This mode is intended for NSC pro-
duction test only. Selecting this mode overrides the FASTLOCK and GEN PURPOSE modes.
2.5.4 Serial Data Input Timing
DS101124-8
Notes: Data shifted into register on clock rising edge.
Data is shifted in MSB first.
Test Conditions: The Serial Data Input Timing is tested using a symmetrical waveform around Vcc/2. The test waveform has an edge rate of 0.6 V/ns with
amplitudes of 2.2V @ VCC = 2.7V and 2.6V VCC = 5.5V.
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相关代理商/技术参数 |
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| LMX2354 | 制造商:NSC 制造商全称:National Semiconductor 功能描述:PLLatinum Fractional N RF/ Integer N IF Dual Low Power Frequency Synthesizer |
| LMX2354SLB | 制造商:NSC 制造商全称:National Semiconductor 功能描述:PLLatinum Fractional N RF/ Integer N IF Dual Low Power Frequency Synthesizer |
| LMX2354SLBX | 制造商:Rochester Electronics LLC 功能描述: 制造商:Texas Instruments 功能描述: |
| LMX2354SLBX/NOPB | 功能描述:IC FREQ SYNTH DUAL 24-LAMCSP RoHS:是 类别:集成电路 (IC) >> 时钟/计时 - 时钟发生器，PLL，频率合成器 系列:PLLatinum™ 标准包装:39 系列:- 类型:* PLL:带旁路 输入:时钟 输出:时钟 电路数:1 比率 - 输入:输出:1:10 差分 - 输入:输出:是/是 频率 - 最大:170MHz 除法器/乘法器:无/无 电源电压:2.375 V ~ 3.465 V 工作温度:0°C ~ 70°C 安装类型:* 封装/外壳:* 供应商设备封装:* 包装:* |
| LMX2354SLDX | 制造商:Rochester Electronics LLC 功能描述:- Bulk 制造商:Texas Instruments 功能描述: |
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