参数资料
型号: MAX9491ETP095+T
厂商: Maxim Integrated Products
文件页数: 1/11页
文件大小: 0K
描述: IC FACT-PROG PLL CLK GEN 20-TQFN
产品培训模块: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
标准包装: 2,500
类型: PLL 时钟发生器
PLL:
输入: LVCMOS,晶体
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: 200MHz
除法器/乘法器: 无/无
电源电压: 3 V ~ 3.6 V
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 20-WQFN 裸露焊盘
供应商设备封装: 20-TQFN-EP(5x5)
包装: 带卷 (TR)
General Description
The MAX9491 multipurpose clock generator is ideal for
communication applications. It offers a factory-program-
mable PLL output that can be set to almost any frequency,
ranging from 4MHz to 200MHz. The MAX9491 uses a
one-time-programmable (OTP) ROM to program the PLL
output. The MAX9491 also features an integrated volt-
age-controlled crystal oscillator (VCXO) that is tuned by a
DC voltage. The VCXO output is used as the PLL input.
The VCXO has a wide ±200ppm (typ) tuning range. The
OTP on the MAX9491 is factory preset, based upon the
customer request. Contact the factory for samples with
preferred frequencies.
The device operates from a 3.3V supply and is speci-
fied over the -40
°C to +85°C extended temperature
range. The MAX9491 is available in 14-pin TSSOP and
20-pin TQFN (5mm x 5mm) packages.
Applications
Telecommunications
Data Networking Systems
Home Entertainment Centers
SOHO
Features
5MHz to 35MHz for Crystal-Clock Reference
5MHz to 50MHz for a Driver Clock Reference
One Fractional-N PLL with Buffered Output
4MHz to 200MHz Output Frequency Range
Low RMS Jitter PLL (< 13ps) at 197 MHz
Integrated VCXO with ±200ppm Tuning Range
Available in 14-Pin TSSOP and 20-Pin TQFN
Packages
+3.3V Supply
-40°C to +85°C Temperature Range
MAX9491
Factory-Programmable, Single PLL
Clock Generator
________________________________________________________________ Maxim Integrated Products
1
15
14
13
12
PD
I.C.
V
DD
V
DD
11
GND
8
7
6
9
10
I.C.
GND
I.C.
19
18
17
16
I.C.
X1
X2
VDD
20
I.C.
12
3
4
TUNE
V
DDA
AGND
GND
5
CLK_OUT
MAX9491
TOP VIEW
TQFN (5mm x 5mm)
Pin Configurations
19-3942; Rev 0; 1/06
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
PART
TEMP RANGE
PIN-
PACKAGE
PKG
CODE
MAX9491ETP
-40°C to +85°C
20 TQFN-EP**
T2055-5
MAX9491EUD*
-40°C to +85°C
14 TSSOP
U14-2
Ordering Information
*Future product—contact factory for availability.
**EP = Exposed pad.
14
13
12
11
10
9
8
1
2
3
4
5
6
7
X2
VDD
GND
VDD
I.C.
X1
TOP VIEW
I.C.
GND
I.C.
CLK_OUT
GND
TUNE
MAX9491
TSSOP
PD
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