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參數(shù)資料
| 型號(hào)： | DS1181LE+T |
| 廠商： | Maxim Integrated Products |
| 文件頁(yè)數(shù)： | 4/6頁(yè) |
| 文件大?。?/td> | 0K |
| 描述： | IC CLOCK MOD SS 8-TSSOP |
| 產(chǎn)品培訓(xùn)模塊： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 標(biāo)準(zhǔn)包裝： | 2,500 |
| 類型： | 擴(kuò)展頻譜時(shí)鐘調(diào)制器 |
| PLL： | 是 |
| 主要目的： | LCD 面板 |
| 輸入： | 時(shí)鐘 |
| 輸出： | LVCMOS |
| 電路數(shù)： | 1 |
| 比率 - 輸入:輸出： | 1:1 |
| 差分 - 輸入:輸出： | 無(wú)/無(wú) |
| 頻率 - 最大： | 134MHz |
| 電源電壓： | 3 V ~ 3.6 V |
| 工作溫度： | -40°C ~ 125°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 8-TSSOP（0.173"，4.40mm 寬） |
| 供應(yīng)商設(shè)備封裝： | 8-TSSOP |
| 包裝： | 帶卷 (TR) |
Detailed Description
The DS1181L modulates an input clock to generate a
center-dithered spread-spectrum output. A 20MHz to
134MHz clock is applied to the CLKIN pin. An internal
PLL dithers the output clock about its center frequency
at a user-selectable magnitude.
Spread-Spectrum Dither Magnitude
The DS1181L can generate dither magnitudes up to
±2%. The desired magnitude is selected using input pins
SMSEL1 and SMSEL2 as shown in Table 1.
Spread-Spectrum Dither Rate
The output spread-spectrum dither rate is fixed at
fIN/832.
DS1181L
20MHz to 134MHz Spread-Spectrum
Clock Modulator for LCD Panels
4
_______________________________________________________________________________________
Pin Description
PIN
NAME
FUNCTION
1
CLKIN
Clock Input. 20MHz to 134MHz clock input (fIN).
Spread-Spectrum Magnitude Select Inputs. These digital inputs select the desired spread-spectrum
magnitude as shown in the table below.
SMSEL2
SMSEL1
MAGNITUDE SELECTED (%)
2
SMSEL1
0
±2.0
0
1
±1.5
1
0
±1.0
3SMSEL2
1
±0.5
4
GND
Ground
5
SSEN
Spread-Spectrum Enable. Three-level input to enable/disable spread-spectrum and to three-state the output.
0 = Power-up/spread-spectrum enabled.
Float = SSO three-stated.
1 = Power-up/spread-spectrum disabled (not a bypass mode).
6
SSO
Spread-Spectrum Clock Output. Outputs a center-dithered spread-spectrum version of the clock input at
CLKIN.
Clock Range and Dither Rate Select. Three-level input that determines the dither rate. See the Detailed
Description section for details.
CRSEL
CLKIN RANGE (MHz)
DITHER RATE
0
66 to 134
Float
33 to 80
7
CRSEL
1
20 to 38
fIN/832
8
VCC
Supply Voltage
CRSEL
CLKIN RANGE
(MHz)
DITHER RATE
0
66 to 134
Float
33 to 80
1
20 to 38
fIN/832
Table 2. Dither Rate
SMSEL2
SMSEL1
MAGNITUDE
SELECTED (%)
0
±2.0
0
1
±1.5
1
0
±1.0
1
±0.5
Table 1. Dither Magnitude
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