MAX2624

更新时间： 2024-01-20 08:44:34

品牌	Logo	应用领域
美信 - MAXIM		振荡器压控振荡器
页数	文件大小	规格书
6页	149K
描述
Monolithic Voltage-Controlled Oscillators

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技术参数
数据手册

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MAX2624 技术参数

是否无铅：	含铅	是否Rohs认证：	不符合
生命周期：	Obsolete	Reach Compliance Code：	not_compliant
风险等级：	5.25	Is Samacsys：	N
最大控制电压：	2.4 V	最小控制电压：	0.4 V
JESD-609代码：	e0	安装特点：	SURFACE MOUNT
偏移频率：	100 kHz	最大工作频率：	998 MHz
最小工作频率：	947 MHz	最高工作温度：	85 °C
最低工作温度：	-40 °C	振荡器类型：	VOLTAGE CONTROLLED OSCILLATOR
输出功率：	-8 dBm	相位噪声：	-101 dBc/Hz
物理尺寸：	3.05mm x 3.05mm x 1.1mm	最大压摆率：	11.5 mA
标称供电电压：	3 V	表面贴装：	YES
端子面层：	Tin/Lead (Sn85Pb15)	Base Number Matches：	1

MAX2624 数据手册

Monolithic Voltage-Controlled Oscillators

Pin Description

NAME

FUNCTION

N.C.

No Connection. Not internally connected.

Oscillator Frequency Tuning Voltage Input. High-impedance input with a voltage input range of 0.4V

(low frequency) to 2.4V (high frequency) adjustment.

TUNE

GND

Ground Connection for Oscillator and Biasing. Requires a low-inductance connection to the circuit board

ground plane.

Shutdown Logic Input. A high-impedance input logic level low disables the device and reduces supply current

to 0.1µA. A logic level high enables the device.

SHDN

Output Buffer DC Supply Voltage Connection. Bypass with a 220pF capacitor to GND for best high-

frequency performance.

Bias and Oscillator DC Supply Voltage Connection. Bypass with a 220pF capacitor to GND for low noise

and low spurious content performance from the oscillator.

OUT

GND

Buffered Oscillator Output

Ground Connection for Output Buffer. Requires a low-inductance connection to the circuit board

ground plane.

Detailed Description

Applications Information

Oscillator

Tune Input

The tuning input is typically connected to the output of

the PLL loop filter. The loop filter is presumed to pro-

vide an appropriately low-impedance source. It may

incorporate an extra RC filter stage to reduce high-fre-

quency noise and spurious signals. Any excess noise

on the tuning input is directly translated into FM noise,

which can degrade the phase-noise performance of the

oscillator. Therefore, it is important to minimize the

noise introduced on the tuning input. A simple RC filter

with low corner frequency is needed during testing in

order to filter the noise present on the voltage source

driving the tuning line.

The MAX2622/MAX2623/MAX2624 VCOs are imple-

mented as an LC oscillator topology, integrating all of

the tank components on-chip. This fully monolithic

approach provides an extremely easy-to-use VCO,

equivalent to a VCO module. The frequency is con-

trolled by a voltage applied to the TUNE pin, which is

internally connected to the varactor. The VCO core

uses a differential topology to provide a stable frequen-

cy versus supply voltage and improve the immunity to

load variations. In addition, there is a buffer amplifier

following the oscillator core to provide added isolation

from load variations and to boost the output power.

Output Buffer

The oscillator signal from the core drives an output

buffer amplifier. The amplifier is constructed as a com-

mon-emitter stage with an integrated on-chip reactive

output match. No external DC blocking capacitor is

required, eliminating the need for any external compo-

Layout Issues

Always use controlled impedance lines (microstrip,

coplanar waveguide, etc.) for high-frequency signals.

Always place decoupling capacitors as close to the

pins as possible; for long V

lines, it may be nec-

essary to add additional decoupling capacitors located

further from the device. Always provide a low-induc-

tance path to ground, and keep GND vias as close to

the device as possible. Thermal reliefs on GND pads

are not recommended.

nents. The output amplifier has its own V

and GND

pins to minimize load-pulling effects. The amplifier

boosts the oscillator signal to a level suitable for driving

most RF mixers.

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MAX2624EUA	MAXIM	Monolithic Voltage-Controlled Oscillators	获取价格
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MAX2624EUA+T	MAXIM	Voltage Controlled Oscillator, 947MHz Min, 998MHz Max,	获取价格
MAX2624EUA-T	MAXIM	Voltage Controlled Oscillator, 947MHz Min, 998MHz Max	获取价格
MAX2624EVKIT	MAXIM	Evaluation Kit for the MAX2622/MAX2623/MAX2624	获取价格
MAX262ACNG	MAXIM	Microprocessor Programmable Universal Active Filters	获取价格

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