參數(shù)資料
型號(hào)： 9TCS1083NLGI
廠商： INTEGRATED DEVICE TECHNOLOGY INC
元件分類： 模擬信號(hào)調(diào)理
英文描述： SPECIALTY ANALOG CIRCUIT, QCC32
封裝： 0.50 MM PITCH, ROHS COMPLIANT, VFQFPN-32
文件頁(yè)數(shù)： 18/39頁(yè)
文件大?。?/td> 491K
代理商： 9TCS1083NLGI
9TCS1083
MOBILE ACCESS—CLOCK SYNTHESIZER, TEMPERATURE SENSOR, & PWM FAN CONTROLLER FOR PORTABLE DEVICES
IDT MOBILE ACCESS—CLOCK SYNTHESIZER, TEMPERATURE SENSOR, & PWM FAN CONTROLLER FOR PORTABLE DEVICES
25
9TCS1083
REV 0.5 100511
Frequency Synthesizer – 24/48/27/25 MHz
IDT9TCS1083/1085 includes a low power PLL to generate
24/27/48 MHz clock outputs. The PLL uses an external
25MHz crystal for reference clock input, thus all 25MHz
clock outputs are through a fanout buffer directly for optimal
performance. Fine tunning on the external crystal cap load
is required to get an accurate 25MHz reference clock.
25MHz_A Connection Recommendations
a. VDDIO_25A range is from 1.05V to 3.3V.
b. Optimize range is 1.05V to 1.5V.
c. Pull up strength is 50 ohm@VDDIO_25A=1.5V
d. Pull down strength is 50 ohm.
e. No on-board 33 ohm series resistor is required.
25MHz_B/C Connection Recommendations
a. VDD_25B/C range is from 1.05V to 3.3V.
b. Optimized for 3.3V VDDIO.
c. Pull up strength is 50 ohm@VDD_25B/C=3.3V
d. Pull down strength is 50 ohm.
e. No on-board 33 ohm series resistor is required.
24/27/48MHz Connection Recommendations
a. Default 2X push-pull IO drive strength for 24/48/27MHz.
b. On board 27 ohm series resistor for each path.
c. Rising/falling slew rate: 1v/ns~4v/ns
d. 2 bits (3 steps) I2C for the Slew Rate.
CLK_25A
VDDIO_25A
4pF
Z=50 ohm
CLK_25B/C
VDD_25B/C
5pF
Z=50 ohm
CLK_24/48/
27M
VDD_24M/27M
5pF
Z=50 ohm
5pF
Z=50 ohm
27 ohm
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