BU3087FV-E Datasheet, PDF (3/26 Pages) Rohm – Built in VCXO,Spread-Spectrum Clock Generator

BU3087FV
●Pin Function
PIN No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
Datasheet
PIN Name
XIN
AVDD1
AVSS1
VCTRL
AVDD2
AVSS2
MODSEL1
MODSEL2
CLK27M
TEST
SSON
VSS
VDD
CLKOUT
PDB
XOUT
Function
Crystal Input terminal
Power supply for VCXO
GND for VCXO
VCXO control input terminal
Power supply for PLL-Analog
GND for PLL-Analog
Spread-Spectrum Modulation control terminal
(Refer to Table of Spread-Spectrum Modulation)
with pull-up
Spread-Spectrum Modulation control terminal
(Refer to Table of Spread-Spectrum Modulation)
with pull-down
27.000000MHz Output
Test terminal, with pull-down
Spread-Spectrum ON／OFF choice（H：ON、L：OFF）, with pull-up
GND for PLL-Digital
Power supply for PLL-Digital
74.250000MHz Output
Power-down control terminal, with pull-up
Crystal Output terminal
●Table of Spread-Spectrum Modulation（1Pin_XIN input frequency =27.000000MHz）
In the case of 11Pin_SSON=H, outputs it according to the following table.
MODSEL2
MODSEL1
CLKOUT
L
L
74.250000MHz ±0.25% Modulation
L
H
74.250000MHz ±0.50% Modulation
H
L
74.250000MHz ±0.75% Modulation
H
H
74.250000MHz ±1.00% Modulation
In the case of 11Pin・SSON=L, outputs unmodulated clock.
www.rohm.com
©j 2012 ROHM Co., Ltd. All rights reserved.
TSZ22111・15・001
3/23
TSZ02201-0E3E0J500040-1-2
17.AUG.2012 Rev.001