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参数资料
| 型号： | LMX2372MDC |
| 厂商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分类： | PLL合成/DDS/VCOs |
| 英文描述： | PLL FREQUENCY SYNTHESIZER, 1200 MHz, UUC |
| 封装： | DIE |
| 文件页数： | 21/27页 |
| 文件大小： | 550K |
| 代理商： | LMX2372MDC |
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Pin Descriptions (Continued)
Pin No.
Pin
Name
I/O
Description
24-Pin
CSP
20-Pin
TSSOP
8
OSC
in
I
Oscillator input. The input has a V
CC/2 input
threshold and can be driven from an external
CMOS or TTL logic gate.
10
9
GND
—
Ground for Aux digital, MICROWIRE, FoLD, and
oscillator circuits.
11
10
Fo/LD
O
Multiplexed output of the Main/Aux
programmable or reference dividers,
Main/Auxiliary lock detect signals and Fastlock
mode. CMOS output
(see Programmable Modes
in the Datasheet).
12
11
Clock
I
High impedance CMOS Clock input. Data for the
various counters is clocked in on the rising edge,
into the 22-bit shift register.
14
12
Data
I
Binary serial data input. Data entered MSB first.
The last two bits are the control bits. High
impedance CMOS input.
15
13
LE
I
Load enable. High impedance CMOS input.
When LE goes HIGH, data stored in the shift
registers is loaded into one of the 4 appropriate
latches (control bit dependent).
16
14
Vc
—
Power supply for MICROWIRE circuitry. Must be
≤ V
CC. Typically connected to same supply level
as processor or baseband controller to enable
programming at low voltages.
17
15
GND
—
Ground for Aux analog circuitry.
18
16
f
IN2
I
Auxiliary prescaler input. Small signal input from
the VCO.
19
17
GND
—
Ground for Aux digital, MICROWIRE, FoLD, and
oscillator.
20
18
CP
o2
O
Aux internal charge pump output. For connection
to a loop filter for driving the input of an external
VCO.
22
19
Vp2
—
Power supply for Aux charge pump. Must be
≥
V
CC.
LMX2370/LMX2371/LMX2372
www.national.com
3
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LMX2372SLBX | 功能描述:IC FREQ SYNTH DUAL 24LAMINATECSP RoHS:否 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:* |
| LMX2372TM | 制造商:NSC 制造商全称:National Semiconductor 功能描述:PLLatinum⑩ Dual Frequency Synthesizer for RF Personal Communications |
| LMX2372TMX | 功能描述:IC FREQ SYNTH DUAL 20-TSSOP 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:* |
| LMX2377U | 制造商:NSC 制造商全称:National Semiconductor 功能描述:PLLatinum⑩ Ultra Low Power Dual Frequency Synthesizer for RF Personal Communications |
| LMX2377U WAF | 制造商:Texas Instruments 功能描述: |
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