83904AG-02LF [IDT]

Low Skew, 1-to-4, Crystal-to-LVCMOS/LVTTL Fanout Buffer;
83904AG-02LF
型号: 83904AG-02LF
厂家: INTEGRATED DEVICE TECHNOLOGY    INTEGRATED DEVICE TECHNOLOGY
描述:

Low Skew, 1-to-4, Crystal-to-LVCMOS/LVTTL Fanout Buffer

时钟 光电二极管 外围集成电路 晶体
文件: 总16页 (文件大小:175K)
中文:  中文翻译
下载:  下载PDF数据表文档文件
Low Skew, 1-to-4, Crystal-to-LVCMOS/  
LVTTL Fanout Buffer  
83904-02  
Data Sheet  
GENERAL DESCRIPTION  
FEATURES  
The 83904-02 is a low skew, high performance 1-to-4 Crystal-to-  
LVCMOS Fanout Buffer.The 83904-02 has selectable single-ended  
clock or two crystal-oscillator inputs. There is an output enable to  
disable the outputs by placing them into a high-impedance state.  
Four LVCMOS/LVTTL outputs,  
19Ω typical output impedance @ V = V = 3.3V  
DD  
DDO  
Two Crystal oscillator input pairs  
One LVCMOS/LVTTL clock input  
Guaranteed output and part-to-part skew characteristics  
make the 83904-02 ideal for those applications demand-  
ing well defined performance and repeatability.  
Crystal input frequencry range: 12MHz – 38.88MHz  
Output frequency: 200MHz (maximum)  
Output Skew: 40ps (maximum) @ V = V = 3.3V  
DD  
DDO  
• RMS phase jitter @ 25MHz output, using a 25MHz crystal  
(100Hz – 1MHz): 0.16ps (typical) @ V = V = 3.3V  
DD  
DDO  
• RMS phase noise at 25MHz:  
Offset  
Noise Power  
100Hz ..............-118.4 dBc/Hz  
1kHz ..............-141.5 dBc/Hz  
10kHz ..............-157.2 dBc/Hz  
100kHz ..............-157.2 dBc/Hz  
Supply Voltage Modes:  
(Core/Output)  
3.3V/3.3V  
3.3V/2.5V  
3.3V/1.8V  
2.5V/2.5V  
2.5V/1.8V  
0°C to 70°C ambient operating temperature  
Available in lead-free (RoHS 6) package  
BLOCK DIAGRAM  
Pullup  
OE  
Pulldown  
CLK_SEL0  
Pulldown  
CLK_SEL1  
PIN ASSIGNMENT  
XTAL_IN0  
OSC  
Q0  
Q1  
Q2  
Q3  
CLK_SEL0  
XTAL_OUT0  
XTAL_IN0  
VDD  
XTAL_IN1  
XTAL_OUT1  
CLK_SEL1  
CLK  
1
2
3
4
5
6
7
8
16  
15  
14  
13  
12  
11  
10  
9
VDDO  
Q0  
Q1  
GND  
Q2  
Q3  
0 0  
XTAL_OUT0  
VDDO  
OE  
XTAL_IN1  
OSC  
0 1  
83904-02  
16-Lead TSSOP  
4.4mm x 5.0mm x 0.92mm  
package body  
XTAL_OUT1  
1 0  
Pulldown  
CLK  
1 1  
G Package  
Top View  
©2016 Integrated Device Technology, Inc  
1
Revision A March 17, 2016  
83904-02 Data Sheet  
TABLE 1. PIN DESCRIPTIONS  
Number  
Name  
Type  
Description  
CLK_SEL0,  
CLK_SEL1  
Clock select inputs. See Table 3, Input Reference Function Table.  
LVCMOS / LVTTL interface levels.  
1, 7  
Input Pulldown  
XTAL_OUT0,  
XTAL_IN0  
Crystal oscillator interface. XTAL_IN0 is the input.  
XTAL_OUT0 is the output.  
2, 3  
4
Input  
Power  
Input  
V
Positive supply pin.  
DD  
XTAL_IN1,  
XTAL_OUT1  
Crystal oscillator interface. XTAL_IN1 is the input.  
XTAL_OUT1 is the output.  
5, 6  
8
CLK  
Input Pulldown Single-ended clock input. LVCMOS/LVTTL interface levels.  
Output enable. When LOW, outputs are in HIGH impedance state.  
When HIGH, outputs are active. LVCMOS / LVTTL interface levels.  
Output supply pins.  
9
OE  
Input  
Pullup  
10, 16  
V
Power  
DDO  
11, 12, 14, 15 Q3, Q2, Q1, Q0 Output  
13 GND Power  
Single-ended clock outputs. LVCMOS/LVTTL interface levels.  
Power supply ground.  
NOTE: Pullup and Pulldown refer to internal input resistors. See Table 2, Pin Characteristics, for typical values.  
TABLE 2. PIN CHARACTERISTICS  
Symbol  
Parameter  
Test Conditions  
Minimum  
Typical Maximum Units  
C
Input Capacitance  
Input Pullup Resistor  
Input Pulldown Resistor  
4
51  
51  
8
pF  
kΩ  
kΩ  
pF  
pF  
pF  
Ω
IN  
R
PULLUP  
R
PULLDOWN  
V
V
= 3.465V  
= 2.625V  
= 2.0V  
DDO  
DDO  
Power Dissipation Capacitance  
(per output)  
C
7
PD  
V
V
V
V
7
DDO  
= 3.3V  
= 2.5V  
= 1.8V  
19  
21  
32  
DDO  
DDO  
DDO  
R
Output Impedance  
Ω
OUT  
Ω
TABLE 3. INPUT REFERENCE FUNCTION TABLE  
Control Inputs  
Reference  
CLK_SEL1  
CLK_SEL0  
0
0
1
1
0
1
0
1
XTAL0 (default)  
XTAL1  
CLK  
CLK  
©2016 Integrated Device Technology, Inc  
2
Revision A March 17, 2016  
83904-02 Data Sheet  
ABSOLUTE MAXIMUM RATINGS  
Supply Voltage, V  
4.6V  
DD  
NOTE: Stresses beyond those listed under Absolute  
Maximum Ratings may cause permanent damage to the  
device. These ratings are stress specifications only. Functional  
operation of product at these conditions or any conditions beyond  
those listed in the DC Characteristics or AC Characteristics is not  
implied. Exposure to absolute maximum rating conditions for ex-  
tended periods may affect product reliability.  
Inputs, V  
-0.5V to V + 0.5 V  
I
DD  
Outputs, V  
-0.5V to V + 0.5V  
O
DDO  
Package Thermal Impedance, θ  
100.3°C/W (0 mps)  
-65°C to 150°C  
JA  
Storage Temperature, T  
STG  
TABLE 4A. POWER SUPPLY DC CHARACTERISTICS, V = V = 3.3V 5ꢀ, TA = 0°C TO 70°C  
DD  
DDO  
Symbol Parameter  
Test Conditions  
Minimum Typical Maximum Units  
V
V
Power Supply Voltage  
3.135  
3.135  
3.3  
3.3  
3.465  
V
DD  
Output Supply Voltage  
Power Supply Current  
Output Supply Current  
3.465  
V
DDO  
No Load & XTALx selected @ 12MHz  
No Load & CLK selected  
7
1
1
mA  
mA  
mA  
I
DD  
I
No Load & CLK selected  
DDO  
TABLE 4B. POWER SUPPLY DC CHARACTERISTICS, V = 3.3V 5ꢀ, V = 2.5V 5ꢀ, TA = 0°C TO 70°C  
DD  
DDO  
Symbol Parameter  
Test Conditions  
Minimum Typical Maximum Units  
V
V
Power Supply Voltage  
3.135  
2.375  
3.3  
2.5  
3.465  
V
DD  
Output Supply Voltage  
Power Supply Current  
Output Supply Current  
2.625  
V
DDO  
No Load & XTALx selected @ 12MHz  
No Load & CLK selected  
7
1
1
mA  
mA  
mA  
I
DD  
I
No Load & CLK selected  
DDO  
TABLE 4C. POWER SUPPLY DC CHARACTERISTICS, V = 3.3V 5ꢀ, V = 1.8V 0.2V, TA = 0°C TO 70°C  
DD  
DDO  
Symbol Parameter  
Test Conditions  
Minimum Typical Maximum Units  
V
V
Power Supply Voltage  
3.135  
1.6  
3.3  
1.8  
3.465  
V
DD  
Output Supply Voltage  
Power Supply Current  
Output Supply Current  
2.0  
7
V
DDO  
No Load & XTALx selected @ 12MHz  
No Load & CLK selected  
mA  
mA  
mA  
I
DD  
1
I
No Load & CLK selected  
1
DDO  
TABLE 4D. POWER SUPPLY DC CHARACTERISTICS, V = V = 2.5V 5ꢀ, TA = 0°C TO 70°C  
DD  
DDO  
Symbol Parameter  
Test Conditions  
Minimum Typical Maximum Units  
V
V
Power Supply Voltage  
2.375  
2.375  
2.5  
2.5  
2.625  
V
DD  
Output Supply Voltage  
Power Supply Current  
Output Supply Current  
2.625  
V
DDO  
No Load & XTALx selected @ 12MHz  
No Load & CLK selected  
3
1
1
mA  
mA  
mA  
I
DD  
I
No Load & CLK selected  
DDO  
©2016 Integrated Device Technology, Inc  
3
Revision A March 17, 2016  
83904-02 Data Sheet  
TABLE 4E. POWER SUPPLY DC CHARACTERISTICS, V = 2.5V 5ꢀ, V = 1.8V 0.2V, TA = 0°C TO 70°C  
DD  
DDO  
Symbol Parameter  
Test Conditions  
Minimum Typical Maximum Units  
V
V
Power Supply Voltage  
2.375  
1.6  
2.5  
1.8  
2.625  
V
DD  
Output Supply Voltage  
Power Supply Current  
Output Supply Current  
2.0  
3
V
DDO  
No Load & XTALx selected @ 12MHz  
No Load & CLK selected  
mA  
mA  
mA  
I
DD  
1
I
No Load & CLK selected  
1
DDO  
TABLE 4F. DC CHARACTERISTICS, TA = 0°C TO 70°C  
Symbol Parameter  
Test Conditions  
Minimum Typical Maximum Units  
V
V
V
V
= 3.3V 5ꢀ  
= 2.5V 5ꢀ  
= 3.3V 5ꢀ  
= 2.5V 5ꢀ  
2.2  
1.6  
V
V
+ 0.3  
+ 0.3  
V
V
V
V
DD  
DD  
DD  
DD  
DD  
V
V
Input High Voltage  
Input Low Voltage  
IH  
DD  
-0.3  
-0.3  
1.3  
IL  
0.9  
150  
5
CLK, CLK_  
SEL0:1  
V
V
V
V
= 3.3V or 2.5V 5ꢀ  
= 3.3V or 2.5V 5ꢀ  
= 3.3V or 2.5V 5ꢀ  
µA  
µA  
µA  
DD  
DD  
DD  
DD  
I
Input High Current  
Input Low Current  
IH  
OE  
CLK, CLK_  
SEL0:1  
-5  
I
IL  
OE  
= 3.3V or 2.5V 5ꢀ  
= 3.3V 5ꢀ% NOTE 1  
= 2.5V 5ꢀ% NOTE 1  
= 1.8V 0.2V% NOTE 1  
= 3.3V 5ꢀ% NOTE 1  
= 2.5V 5ꢀ% NOTE 1  
= 1.8V 0.2V% NOTE 1  
-150  
2.6  
µA  
V
V
DDO  
V
Output HighVoltage  
Output Low Voltage  
V
1.8  
V
OH  
DDO  
V
1.2  
V
DDO  
V
V
0.6  
0.5  
0.4  
V
DDO  
DDO  
V
V
OL  
V
V
DDO  
NOTE 1: Outputs terminated with 50Ω to V /2. See Parameter Measurement section, “Load Test Circuit” diagrams.  
DDO  
TABLE 5. CRYSTAL CHARACTERISTICS  
Parameter  
Test Conditions  
Minimum Typical Maximum  
Units  
Mode of Oscillation  
Frequency  
Fundamental  
12  
38.88  
MHz  
Ω
Equivalent Series Resistance (ESR)  
Shunt Capacitance  
Drive Level  
50  
7
pF  
1
mW  
©2016 Integrated Device Technology, Inc  
4
Revision A March 17, 2016  
83904-02 Data Sheet  
TABLE 6A. AC CHARACTERISTICS, V = V = 3.3V 5ꢀ, TA = 0°C TO 70°C  
DD  
DDO  
Symbol Parameter  
Output Frequency  
Test Conditions  
Minimum Typical Maximum Units  
w/external XTAL  
w/external CLK  
12  
38.88  
200  
MHz  
MHz  
f
MAX  
Propagation Delay, Low-to-High% NOTE  
1
tp  
1.4  
1.9  
2.4  
ns  
LH  
tsk(o)  
Output Skew% NOTE 2  
40  
ps  
ps  
tsk(pp)  
Part-to-Part Skew% NOTE 2, 3  
700  
RMS Phase Jitter, Random%  
NOTE 2, 4  
25MHz, Integration Range:  
100Hz – 1MHz  
tjit(Ø)  
0.16  
ps  
t / t  
Output Rise/Fall Time  
20ꢀ to 80ꢀ  
100  
45  
800  
55  
54  
10  
10  
ps  
R
F
w/external XTAL  
w/external CLK  
Output  
Duty Cycle  
odc  
ƒ < 150MHz  
46  
t
Output Enable Time% NOTE 5  
Output Disable Time% NOTE 5  
ns  
ns  
EN  
t
DIS  
NOTE 1: Measured from V /2 of the input to V /2 of the output.  
DDO  
NOTE 2: This parameter isDdD efined in accordance with JEDEC Standard 65.  
NOTE 3: Defined as skew between outputs on different devices operating a the same supply voltages and  
with equal load conditions. Using the same type of input on each device, the output is measured at V /2.  
DDO  
NOTE 4: Phase jitter is dependent on the input source used.  
NOTE 5: These parameters are guaranteed by characterization. Not tested in production.  
TABLE 6B. AC CHARACTERISTICS, V = 3.3V 5ꢀ, V = 2.5V 5ꢀ, TA = 0°C TO 70°C  
DD  
DDO  
Symbol Parameter  
Output Frequency  
Test Conditions  
Minimum Typical Maximum Units  
w/external XTAL  
w/external CLK  
12  
38.88  
200  
MHz  
MHz  
f
MAX  
Propagation Delay, Low-to-High% NOTE  
1
tp  
1.5  
2.0  
2.5  
ns  
LH  
tsk(o)  
Output Skew% NOTE 2  
40  
ps  
ps  
tsk(pp)  
Part-to-Part Skew% NOTE 2, 3  
700  
RMS Phase Jitter, Random%  
NOTE 2, 4  
25MHz, Integration Range:  
100Hz - 1MHz  
tjit(Ø)  
0.16  
ps  
t / t  
Output Rise/Fall Time  
20ꢀ to 80ꢀ  
100  
45  
800  
55  
54  
10  
10  
ps  
R
F
w/external XTAL  
w/external CLK  
Output  
Duty Cycle  
odc  
ƒ < 150MHz  
46  
t
Output Enable Time% NOTE 5  
Output Disable Time% NOTE 5  
ns  
ns  
EN  
t
DIS  
NOTE 1: Measured from V /2 of the input to V /2 of the output.  
DDO  
NOTE 2: This parameter isDdD efined in accordance with JEDEC Standard 65.  
NOTE 3: Defined as skew between outputs on different devices operating a the same supply voltages and  
with equal load conditions. Using the same type of input on each device, the output is measured at V /2.  
DDO  
NOTE 4: Phase jitter is dependent on the input source used.  
NOTE 5: These parameters are guaranteed by characterization. Not tested in production.  
©2016 Integrated Device Technology, Inc  
5
Revision A March 17, 2016  
83904-02 Data Sheet  
TABLE 6C. AC CHARACTERISTICS, V = 3.3V 5ꢀ, V = 1.8V 0.2V, TA = 0°C TO 70°C  
DD  
DDO  
Symbol Parameter  
Output Frequency  
Test Conditions  
Minimum Typical Maximum Units  
w/external XTAL  
w/external CLK  
12  
38.88  
200  
MHz  
MHz  
f
MAX  
Propagation Delay, Low-to-High% NOTE  
1
tp  
1.7  
2.2  
2.7  
ns  
LH  
tsk(o)  
Output Skew% NOTE 2  
40  
ps  
ps  
tsk(pp)  
Part-to-Part Skew% NOTE 2, 3  
700  
RMS Phase Jitter, Random%  
NOTE 2, 4  
25MHz, Integration Range:  
100Hz - 1MHz  
tjit(Ø)  
0.16  
ps  
t / t  
Output Rise/Fall Time  
20ꢀ to 80ꢀ  
100  
45  
1000  
55  
ps  
R
F
w/external XTAL  
w/external CLK  
Output  
Duty Cycle  
odc  
ƒ < 150MHz  
46  
54  
t
Output Enable Time% NOTE 5  
Output Disable Time% NOTE 5  
10  
ns  
ns  
EN  
t
10  
DIS  
NOTE 1: Measured from V /2 of the input to V /2 of the output.  
DDO  
NOTE 2: This parameter isDdD efined in accordance with JEDEC Standard 65.  
NOTE 3: Defined as skew between outputs on different devices operating a the same supply voltages and  
with equal load conditions. Using the same type of input on each device, the output is measured at V /2.  
DDO  
NOTE 4: Phase jitter is dependent on the input source used.  
NOTE 5: These parameters are guaranteed by characterization. Not tested in production.  
TABLE 6D. AC CHARACTERISTICS, V = V = 2.5V 5ꢀ, TA = 0°C TO 70°C  
DD  
DDO  
Symbol Parameter  
Output Frequency  
Test Conditions  
Minimum Typical Maximum Units  
w/external XTAL  
w/external CLK  
12  
38.88  
200  
MHz  
MHz  
f
MAX  
Propagation Delay, Low-to-High% NOTE  
1
tp  
1.5  
2.2  
3.0  
ns  
LH  
tsk(o)  
Output Skew% NOTE 2  
40  
ps  
ps  
tsk(pp)  
Part-to-Part Skew% NOTE 2, 3  
700  
RMS Phase Jitter, Random%  
NOTE 2, 4  
25MHz, Integration Range:  
100Hz - 1MHz  
tjit(Ø)  
0.20  
ps  
t / t  
Output Rise/Fall Time  
20ꢀ to 80ꢀ  
100  
45  
800  
55  
52  
10  
10  
ps  
R
F
w/external XTAL  
w/external CLK  
Output  
Duty Cycle  
odc  
ƒ < 150MHz  
48  
t
Output Enable Time% NOTE 5  
Output Disable Time% NOTE 5  
ns  
ns  
EN  
t
DIS  
NOTE 1: Measured from V /2 of the input to V /2 of the output.  
DDO  
NOTE 2: This parameter isDdD efined in accordance with JEDEC Standard 65.  
NOTE 3: Defined as skew between outputs on different devices operating a the same supply voltages and  
with equal load conditions. Using the same type of input on each device, the output is measured at V /2.  
DDO  
NOTE 4: Phase jitter is dependent on the input source used.  
NOTE 5: These parameters are guaranteed by characterization. Not tested in production.  
©2016 Integrated Device Technology, Inc  
6
Revision A March 17, 2016  
83904-02 Data Sheet  
TABLE 6E. AC CHARACTERISTICS, V = 2.5V 5ꢀ, V = 1.8V 0.2V, TA = 0°C TO 70°C  
DD  
DDO  
Symbol Parameter  
Output Frequency  
Test Conditions  
Minimum Typical Maximum Units  
w/external XTAL  
w/external CLK  
12  
38.88  
200  
MHz  
MHz  
f
MAX  
Propagation Delay, Low-to-High% NOTE  
1
tp  
1.7  
2.5  
3.3  
ns  
LH  
tsk(o)  
Output Skew% NOTE 2  
40  
ps  
ps  
tsk(pp)  
Part-to-Part Skew% NOTE 2, 3  
700  
RMS Phase Jitter, Random%  
NOTE 2, 4  
25MHz, Integration Range:  
100Hz - 1MHz  
tjit(Ø)  
0.19  
ps  
t / t  
Output Rise/Fall Time  
20ꢀ to 80ꢀ  
100  
45  
1000  
55  
ps  
R
F
w/external XTAL  
w/external CLK  
Output  
Duty Cycle  
odc  
ƒ < 150MHz  
46  
54  
t
Output Enable Time% NOTE 5  
Output Disable Time% NOTE 5  
10  
ns  
ns  
EN  
t
10  
DIS  
NOTE 1: Measured from V /2 of the input to V /2 of the output.  
DDO  
NOTE 2: This parameter isDdD efined in accordance with JEDEC Standard 65.  
NOTE 3: Defined as skew between outputs on different devices operating a the same supply voltages and  
with equal load conditions. Using the same type of input on each device, the output is measured at V /2.  
DDO  
NOTE 4: Phase jitter is dependent on the input source used.  
NOTE 5: These parameters are guaranteed by characterization. Not tested in production.  
©2016 Integrated Device Technology, Inc  
7
Revision A March 17, 2016  
83904-02 Data Sheet  
TYPICAL PHASE NOISE AT 25MHZ  
0
-10  
25MHz  
-20  
-30  
RMS Phase Jitter (Random)  
100Hz to 1MHz = 0.16ps (typical)  
-40  
-50  
-60  
-70  
-80  
-90  
-100  
-110  
-120  
-130  
-140  
-150  
-160  
-170  
-180  
-190  
Raw Phase Noise Data  
100  
1k  
10k  
100k  
1M  
OFFSET FREQUENCY (HZ)  
©2016 Integrated Device Technology, Inc  
8
Revision A March 17, 2016  
83904-02 Data Sheet  
PARAMETER MEASUREMENT INFORMATION  
3.3V CORE/3.3V OUTPUT LOAD AC TEST CIRCUIT  
2.5V CORE/2.5V OUTPUT LOAD AC TEST CIRCUIT  
3.3V CORE/2.5V OUTPUT LOAD AC TEST CIRCUIT  
3.3V CORE/1.8V OUTPUT LOAD AC TEST CIRCUIT  
2.5 CORE/1.8V OUTPUT LOAD AC TEST CIRCUIT  
PART-TO-PART SKEW  
©2016 Integrated Device Technology, Inc  
9
Revision A March 17, 2016  
83904-02 Data Sheet  
PARAMETER MEASUREMENT INFORMATION, CONTINUED  
PROPAGATION DELAY  
OUTPUT SKEW  
80ꢀ  
80ꢀ  
20ꢀ  
20ꢀ  
Q0:Q3  
tR  
tF  
OUTPUT DUTY CYCLE/PULSE WIDTH/PERIOD  
OUTPUT RISE/FALL TIME  
©2016 Integrated Device Technology, Inc  
10  
Revision A March 17, 2016  
83904-02 Data Sheet  
APPLICATION INFORMATION  
RECOMMENDATIONS FOR UNUSED INPUT AND OUTPUT PINS  
INPUTS:  
OUTPUTS:  
CRYSTAL INPUTS  
LVCMOS OUTPUTS  
For applications not requiring the use of the crystal oscillator input,  
both XTAL_IN and XTAL_OUT can be left floating. Though not  
required, but for additional protection, a 1kΩ resistor can be tied  
from XTAL_IN to ground.  
All unused LVCMOS output can be left floating. There should be  
no trace attached.  
CLK INPUT  
For applications not requiring the use of the clock input, it can be  
left floating.Though not required, but for additional protection, a 1kΩ  
resistor can be tied from the CLK input to ground.  
SELECT PINS  
All select pins have internal pull-ups and pull-downs% additional  
resistance is not required but can be added for additional protection.  
A 1kΩ resistor can be used.  
©2016 Integrated Device Technology, Inc  
11  
Revision A March 17, 2016  
83904-02 Data Sheet  
CRYSTAL INPUT INTERFACE  
Figure 1 shows an example of 83904-02 crystal interface with  
a parallel resonant crystal. The frequency accuracy can be fine  
tuned by adjusting the C1 and C2 values. For a parallel crystal with  
loading capacitance CL = 18pF, we suggest C1 = 15pF and C2 =  
15pF to start with.These values may be slightly fine tuned further to  
optimize the frequency accuracy for different board layouts.Slightly  
increasing the C1 and C2 values will slightly reduce the frequency.  
Slightly decreasing the C1 and C2 values will slightly increase the  
frequency.For the oscillator circuit below, R1 can be used, but is not  
required. For new designs, it is recommended that R1 not be used.  
XTAL_IN  
C1  
15p  
X1  
18pF Parallel Crystal  
0
XTAL_OU T  
C2  
15p  
R1 (optional)  
FIGURE 1. CRYSTAL INPUT INTERFACE  
OVERDRIVING THE CRYSTAL INTERFACE  
termination at the crystal input will attenuate the signal in half.This  
can be done in one of two ways. First, R1 and R2 in parallel should  
equal the transmission line impedance. For most 50Ω applications,  
R1 and R2 can be 100Ω.This can also be accomplished by removing  
R1 and making R2 50Ω.By overdring the crystal oscillator, the device  
will be functional, but note, the device performance is guaranteed  
by using a quartz crystal.  
The XTAL_IN input can a single-ended LVCMOS signal through  
an AC coupling capacitor. A general interface diagram is shown in  
Figure 2A. The XTAL_OUT pin can be left floating. The maximum  
amplitude of the input signal should not exceed 2V and the input  
edge rate can be as slow as 10ns. This configuration requires that  
the output impedance of the driver (Ro) plus the series resistance  
(Rs) equals the transmission line impedance. In addition, matched  
3.3V  
3.3V  
R1  
100  
C1  
Ro ~ 7 Ohm  
Zo = 50 Ohm  
XTAL_IN  
RS  
43  
0.1uF  
R2  
100  
Driver_LVCMOS  
XTAL_OUT  
Crystal Input Interface  
FIGURE 2A. GENERAL DIAGRAM FOR LVCMOS DRIVER TO XTAL INPUT INTERFACE  
VCC=3.3V  
C1  
Zo = 50 Ohm  
XTAL_IN  
0.1uF  
R1  
50  
Zo = 50 Ohm  
XTAL_OUT  
LVPECL  
Crystal Input Interface  
R2  
50  
R3  
50  
FIGURE 2A. GENERAL DIAGRAM FOR LVPECL DRIVER TO XTAL INPUT INTERFACE  
©2016 Integrated Device Technology, Inc  
12  
Revision A March 17, 2016  
83904-02 Data Sheet  
RELIABILITY INFORMATION  
TABLE 7. θ VS. AIR FLOW TABLE FOR 16 LEAD TSSOP  
JA  
θJA by Velocity (Linear Feet per Minute)  
0
1
2.5  
Multi-Layer PCB, JEDEC Standard Test Boards  
100.3°C/W  
96.0°C/W  
93.9°C/W  
TRANSISTOR COUNT  
The transistor count for 83904-02 is: 205  
PACKAGE OUTLINE - G SUFFIX FOR 16 LEAD TSSOP  
TABLE 8. PACKAGE DIMENSIONS  
Millimeters  
SYMBOL  
Minimum  
Maximum  
N
A
16  
--  
1.20  
0.15  
1.05  
0.30  
0.20  
5.10  
A1  
A2  
b
0.05  
0.80  
0.19  
0.09  
4.90  
c
D
E
6.40 BASIC  
0.65 BASIC  
E1  
e
4.30  
4.50  
L
0.45  
0°  
0.75  
8°  
α
aaa  
--  
0.10  
Reference Document: JEDEC Publication 95, MO-153  
©2016 Integrated Device Technology, Inc  
13  
Revision A March 17, 2016  
83904-02 Data Sheet  
TABLE 9. ORDERING INFORMATION  
Part/Order Number  
Marking  
Package  
Shipping Packaging  
tube  
Temperature  
83904AG-02LF  
83904AG-02LFT  
3904A02L  
3904A02L  
16 Lead “Lead-Free” TSSOP  
16 Lead “Lead-Free” TSSOP  
0°C to 70°C  
0°C to 70°C  
tape & reel  
©2016 Integrated Device Technology, Inc  
14  
Revision A March 17, 2016  
83904-02 Data Sheet  
REVISION HISTORY SHEET  
Description of Change  
Rev  
Table  
Page  
Date  
12  
14  
Updated Overdriving the Crystal Interface section.  
Ordering Information Table - deleted the “ICS” prefix in the Part/Order Number column  
and corrected the Temperature column.  
T9  
A
9/3/10  
Updated header/footer.  
T9  
T9  
14  
14  
Ordering Information - Removed leaded devices.  
Updated data sheet format.  
A
A
3/25/15  
3/17/16  
Ordering Information - Deleted LF note below table.  
Updated header and footer.  
©2016 Integrated Device Technology, Inc  
15  
Revision A March 17, 2016  
83904-02 Data Sheet  
Tech Support  
www.idt.com/go/support  
Corporate Headquarters  
6024 Silver Creek Valley Road  
San Jose, CA 95138 USA  
www.IDT.com  
Sales  
1-800-345-7015 or 408-284-8200  
Fax: 408-284-2775  
www.IDT.com/go/sales  
DISCLAIMER Integrated Device Technology, Inc. (IDT) reserves the right to modify the products and/or specications described herein at any time, without notice, at IDT's sole discretion. Performance specications and  
operating parameters of the described products are determined in an independent state and are not guaranteed to perform the same way when installed in customer products. The information contained herein is provided  
without representation or warranty of any kind, whether express or implied, including, but not limited to, the suitability of IDT's products for any particular purpose, an implied warranty of merchantability, or non-infringe-  
ment of the intellectual property rights of others. This document is presented only as a guide and does not convey any license under intellectual property rights of IDT or any third parties.  
IDT's products are not intended for use in applications involving extreme environmental conditions or in life support systems or similar devices where the failure or malfunction of an IDT product can be reasonably expect-  
ed to signicantly affect the health or safety of users. Anyone using an IDT product in such a manner does so at their own risk, absent an express, written agreement by IDT.  
Integrated Device Technology, IDT and the IDT logo are trademarks or registered trademarks of IDT and its subsidiaries in the United States and other countries. Other trademarks used herein are the property of IDT or  
their respective third party owners.  
For datasheet type denitions and a glossary of common terms, visit www.idt.com/go/glossary.  
Copyright ©2016 Integrated Device Technology, Inc. All rights reserved.  

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