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| 型号： | DS1090U-8+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 8/8页 |
| 文件大小： | 0K |
| 描述： | IC ECONOSCILLATOR SS 8-USOP |
| 其它有关文件： | Automotive Product Guide |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 3,000 |
| 系列： | EconOscillator™ |
| 类型： | 时钟发生器 |
| PLL： | 无 |
| 输入： | 时钟 |
| 输出： | CMOS，TTL |
| 电路数： | 1 |
| 比率 - 输入:输出： | 1:1 |
| 差分 - 输入:输出： | 无/无 |
| 频率 - 最大： | 8MHz |
| 除法器/乘法器： | 是/无 |
| 电源电压： | 3 V ~ 5.5 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-TSSOP，8-MSOP（0.118"，3.00mm 宽） |
| 供应商设备封装： | 8-uMAX |
| 包装： | 带卷 (TR) |
DS1090
Low-Frequency, Spread-Spectrum
EconOscillator
Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are
implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.
8 _____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600
2007 Maxim Integrated Products
is a registered trademark of Maxim Integrated Products.
is a registered trademark of Dallas Semiconductor Corporation.
Dither Percentage Settings
Dither amplitude (measured in percent ± from the mas-
ter oscillator center frequency) is set using input pins
J0 and J1. This circuit uses a sense current from the
master oscillator bias circuit to adjust the amplitude of
the triangle-wave signal to a voltage level that modu-
lates the master oscillator to a percentage of its resis-
tor-set center frequency. This percentage is set in the
end application to be 0%, 2%, 4%, or 8% (see Table 2).
Application Information
Pin Connection
The DS1090 is intended to provide a fixed-frequency,
dithered clock to be used as a clock driver for DC-DC
converters and other applications requiring a low-
frequency EMI-reduced clock oscillator. All control pins
must be biased per Tables 1 and 2 for proper operation
for the individual application’s requirements. RSET must
be tied to ground (GND) by a customer-supplied resistor.
RSET Resistor Selection
The value of the resistor used to select the desired fre-
quency is calculated using the formula in the
Master
Oscillator section (see also Figure 1). It is recommended
to use, at minimum, a 1%-tolerance, 1/16th-watt compo-
nent with a temperature coefficient that satisfies the over-
all stability requirements desired of the end-equipment.
Place the external RSET resistor as close as possible to
minimize lead inductance.
Power-Supply Decoupling
To achieve best results, it is highly recommended that a
decoupling capacitor is used on the IC power-supply
pins. Typical values of decoupling capacitors are 0.01F
and 0.1F. Use a high-quality, ceramic, surface-mount
capacitor, and mount it as close as possible to the VCC
and GND pins of the IC to minimize lead inductance.
J1
J0
DITHER PERCENT (%)
00
0
01
2
10
4
11
8
Table 2. Dither Percentage Setting
Package Information
For the latest package outline information, go to
www.maxim-ic.com/DallasPackInfo.
Chip Information
TRANSISTOR COUNT: 1883
SUBSTRATE CONNECTED TO GROUND
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相关代理商/技术参数 |
参数描述 |
|---|---|
| DS1091LN-66+ | 功能描述:时钟发生器及支持产品 Spread-Spectrum EconOscillator Auto RoHS:否 制造商:Silicon Labs 类型:Clock Generators 最大输入频率:14.318 MHz 最大输出频率:166 MHz 输出端数量:16 占空比 - 最大:55 % 工作电源电压:3.3 V 工作电源电流:1 mA 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:QFN-56 |
| DS1091LU-66+ | 功能描述:时钟发生器及支持产品 Spread-Spectrum EconOscillator Auto RoHS:否 制造商:Silicon Labs 类型:Clock Generators 最大输入频率:14.318 MHz 最大输出频率:166 MHz 输出端数量:16 占空比 - 最大:55 % 工作电源电压:3.3 V 工作电源电流:1 mA 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:QFN-56 |
| DS1091LUA-027+ | 功能描述:时钟发生器及支持产品 Spread-Spectrum EconOscillator Auto RoHS:否 制造商:Silicon Labs 类型:Clock Generators 最大输入频率:14.318 MHz 最大输出频率:166 MHz 输出端数量:16 占空比 - 最大:55 % 工作电源电压:3.3 V 工作电源电流:1 mA 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:QFN-56 |
| DS1091LUA-027+T | 功能描述:时钟发生器及支持产品 Spread-Spectrum EconOscillator Auto RoHS:否 制造商:Silicon Labs 类型:Clock Generators 最大输入频率:14.318 MHz 最大输出频率:166 MHz 输出端数量:16 占空比 - 最大:55 % 工作电源电压:3.3 V 工作电源电流:1 mA 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:QFN-56 |
| DS1091LUA-030/V+ | 功能描述:时钟发生器及支持产品 Spread-Spectrum EconOscillator RoHS:否 制造商:Silicon Labs 类型:Clock Generators 最大输入频率:14.318 MHz 最大输出频率:166 MHz 输出端数量:16 占空比 - 最大:55 % 工作电源电压:3.3 V 工作电源电流:1 mA 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:QFN-56 |
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