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參數(shù)資料
| 型號(hào)： | CDCE401YS |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | OSCILLATOR IC WITH ELECTRONIC CALIBRATION |
| 中文描述： | 振蕩器IC與電子校準(zhǔn) |
| 文件頁數(shù)： | 2/19頁 |
| 文件大小： | 246K |
| 代理商： | CDCE401YS |
www.ti.com
EN
VDD
1
DRB PACKAGE
(TOP VIEW)
NC No internal connection
2
3
4
8
7
6
5
XIN
NC
XOUT
SDATA
VSS
FOUT
P0012-01
CDCE401
SCAS820–JUNE 2006
An on-die EEPROM enables nonvolatile storage of the frequency setting. For the transfer of the programming
into the EEPROM, the CDCE401 takes advantage of the SDATA input. In-circuit programming of the device is
possible.
Unlike other EEPROM-based devices, it is not necessary to apply a high supply voltage to the device in order to
program it.
The CDCE401 accepts crystals from 20 MHz up to 100 MHz. For lower frequencies, the CDCE401 provides a
programmable post-divider.
The CDCE401 features a wide supply-voltage range. This makes the device ideal to use at today’s most
commonly used supply voltage of 2.5 V, and operation at supply voltages of 2.8 V, 2.85 V, and 3 V for cellular
applications can be addressed with a single device. Therefore, use of the device in multiple different application
spaces is possible, reducing inventory costs.
The CDCE401 is characterized to work in the industrial temperature range from –40°C to 85°C.
Optional: QFN Package Terminal Assignment
For evaluation purposes, the CDCE401 is also available in a QFN package. The packaged device can be
obtained together with an EVM.
Table 1. TERMINAL FUNCTIONS
TERMINAL
NUMBER
BOND PAD
TYPE
DESCRIPTION
NAME
QFN
Logic select pin. Enables/disables device. Has a hysteresis of 300 mV. A
2-M
pullup resistor is built in.
Frequency output
Not connected
Logic select pin. This input serves as programming input. Has a
hysteresis of 300 mV. A 2-M
pullup resistor is built in.
Voltage supply
Ground
Crystal oscillator input
Crystal oscillator output
EN
1
1
Input LVCMOS
FOUT
NC
5
7
5
Output LVCMOS
N/A
SDATA
6
7
Input LVCMOS
VDD
VSS
XIN
XOUT
8
4
2
3
8
4
2
3
Power
Ground
Input oscillator
Output oscillator
2
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| CDCE421 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:Fully Integrated Wide-Range, Low-Jitter, Crystal-Oscillator Clock Generator |
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