参数资料
| 型号： | DS1181LE+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 5/6页 |
| 文件大小： | 0K |
| 描述： | IC CLOCK MOD SS 8-TSSOP |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 类型： | 扩展频谱时钟调制器 |
| PLL： | 是 |
| 主要目的： | LCD 面板 |
| 输入： | 时钟 |
| 输出： | LVCMOS |
| 电路数： | 1 |
| 比率 - 输入:输出： | 1:1 |
| 差分 - 输入:输出： | 无/无 |
| 频率 - 最大： | 134MHz |
| 电源电压： | 3 V ~ 3.6 V |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-TSSOP（0.173"，4.40mm 宽） |
| 供应商设备封装： | 8-TSSOP |
| 包装： | 带卷 (TR) |
DS1181L
20MHz to 134MHz Spread-Spectrum
Clock Modulator for LCD Panels
Spread-Spectrum Enable
On power-up, the output clock (SSO) remains three-stat-
ed until the internal PLL reaches a stable frequency. The
SSEN input can be used to disable the spread-spec-
trum modulation and to three-state the SSO output. If the
SSEN pin is pulled high, the spread-spectrum modula-
tion is turned off, but the device still uses the internal
PLL to generate the clock signal at SSO. If the SSEN pin
is floated, the output is three-stated.
Applications Information
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.
fIN + (0.5%, 1.0%, 1.5%, OR 2.0% OF fIN)
fIN
fIN - (0.5%, 1.0%, 1.5%, OR 2.0% OF fIN)
fSSO
TIME
1
DITHER CYCLE
RATE
DITHER AMOUNT
(
±0.5%, ±1.0%, ±1.5%, OR ±2.0%)
CLKIN RANGE (MHz)
DITHER RATE
20 TO 134
fIN/832
IF SSEN = 1
Figure 1. DS1181L Spread-Spectrum Frequency Modulation
CLKIN
SMSEL1
SMSEL2
GND
CRSEL
VCC
DECOUPLING
CAPACITOR
VCC
SSO
fIN = 20MHz TO
134MHz
NOTE: IN THE ABOVE CONFIGURATION WITH SMSEL1, SMSEL2, AND SSEN CONNECTED TO GND AS WELL AS
CRSEL CONNECTED TO VCC, THE DEVICE IS CONFIGURED WITH A SPREAD-SPECTRUM MAGNITUDE OF
±2.0%,
AND ALLOWS A CLKIN BETWEEN 20MHz and 38MHz.
fSSO
DITHERED
SSEN
DS1181L
Typical Operating Circuit
PACKAGE TYPE
PACKAGE CODE
DOCUMENT NO.
8 TSSOP
H8+3
Package Information
For the latest package outline information and land patterns, go to www.maxim-ic.com/packages.
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