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| 型号： | MK3721DTR |
| 厂商： | IDT, Integrated Device Technology Inc |
| 文件页数： | 1/7页 |
| 文件大小： | 0K |
| 描述： | IC VCXO DTV/SET-TOP 8-SOIC |
| 标准包装： | 2,500 |
| 类型： | 压控晶体振荡器（VCXO） |
| PLL： | 无 |
| 输入： | 晶体 |
| 输出： | CMOS |
| 电路数： | 1 |
| 比率 - 输入:输出： | 2:1 |
| 差分 - 输入:输出： | 无/无 |
| 频率 - 最大： | 28MHz |
| 除法器/乘法器： | 无/无 |
| 电源电压： | 3.15 V ~ 3.45 V |
| 工作温度： | 0°C ~ 70°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-SOIC（0.154"，3.90mm 宽） |
| 供应商设备封装： | 8-SOIC |
| 包装： | 带卷 (TR) |
DATASHEET
LOW COST 16.2 TO 28 MHZ 3.3 VOLT VCXO
MK3721
IDT / ICS LOW COST 16.2 TO 28 MHZ 3.3 VOLT VCXO
1
MK3721
REV E 103003
Description
The MK3721 series of devices includes the original
MK3721S and the new MK3721D. The MK3721D is a
drop-in replacement for the MK3721S device. Compared to
the earlier device, the MK3721D offers a wider operating
frequency range and improved power supply noise
rejection.
The MK3721 is a low cost, low-jitter, high-performance 3.3
volt VCXO designed to replace expensive discrete VCXOs
modules. The on-chip Voltage Controlled Crystal Oscillator
accepts a 0 to 3.3 V input voltage to cause the output
clocks to vary by ±100 ppm. Using ICS’ patented VCXO
techniques, the device uses an inexpensive external
pullable crystal in the range of 16.2 to 28 MHz to produce a
VCXO output clock at that same frequency.
ICS manufactures the largest variety of Set-Top Box and
multimedia clock synthesizers for all applications. If more
clock outputs are needed, see the MK3732 or MK377x
family of parts. Consult ICS to eliminate VCXOs, crystals,
and oscillators from your board.
The frequency of the on-chip VCXO is adjusted by an
external control voltage input into pin VIN. Because VIN is a
high-impedance input, it can be driven directly from an
PWM RC integrator circuit. Frequency output increases
with VIN voltage input. The usable range of VIN is 0 to 3.3
V.
Features
MK3721D is a drop-in replacement for the earlier
MK3721S device
Packaged in 8-pin SOIC
Operational frequency range of 16.2 MHz to 28 MHz
Uses an inexpensive external crystal
On-chip patented VCXO with pull range of 200 ppm
(minimum)
VCXO tuning voltage of 0 to 3.3 V
Operating voltage of 3.3 V
12 mA output drive capability at TTL levels
Advanced, low-power, sub-micron CMOS process
For frequencies between 1 MHz and 8 MHz, use the
MK3713D. For higher than 28 MHz, use the MK3732-05.
Available in a lead-free package
MK3721D is recommended for new designs.
Block Diagram
X1
X2
Voltage
Controlled
Crystal
Oscillator
VIN
16.2 to 28 MHz
Pullable
Crystal
16.2 to 28 MHz Clock
(REFOUT)
GND
VDD
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MK3721S | 功能描述:IC VCXO DTV/SET-TOP 8-SOIC 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:- 标准包装:2,000 系列:- 类型:PLL 时钟发生器 PLL:带旁路 输入:LVCMOS，LVPECL 输出:LVCMOS 电路数:1 比率 - 输入:输出:2:11 差分 - 输入:输出:是/无 频率 - 最大:240MHz 除法器/乘法器:是/无 电源电压:3.135 V ~ 3.465 V 工作温度:0°C ~ 70°C 安装类型:表面贴装 封装/外壳:32-LQFP 供应商设备封装:32-TQFP（7x7） 包装:带卷 (TR) |
| MK3721STR | 功能描述:IC VCXO DTV/SET-TOP 8-SOIC 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:- 标准包装:2,000 系列:- 类型:PLL 时钟发生器 PLL:带旁路 输入:LVCMOS，LVPECL 输出:LVCMOS 电路数:1 比率 - 输入:输出:2:11 差分 - 输入:输出:是/无 频率 - 最大:240MHz 除法器/乘法器:是/无 电源电压:3.135 V ~ 3.465 V 工作温度:0°C ~ 70°C 安装类型:表面贴装 封装/外壳:32-LQFP 供应商设备封装:32-TQFP（7x7） 包装:带卷 (TR) |
| MK3722 | 制造商:ICSI 制造商全称:Integrated Circuit Solution Inc 功能描述:VCXO PLUS AUDIO CLOCK FOR STB |
| MK3722G | 功能描述:IC VCXO DTV/SET-TOP 16-TSSOP 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:- 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:* |
| MK3722GLF | 功能描述:VCXO振荡器 VCXO PLUS AUDIO CLOCK FOR STB RoHS:否 制造商:Fox 封装 / 箱体:5 mm x 3.2 mm 频率:19.2 Mhz 频率稳定性:2.5 PPM 输出格式: 封装:Reel 电源电压:3 V 端接类型:SMD/SMT 尺寸:3.2 mm W x 5 mm L x 1.5 mm H 最小工作温度:- 20 C 最大工作温度:+ 75 C |
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