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PDF U834BS Data sheet ( Hoja de datos )
| Número de pieza | U834BS | |
| Descripción | (U832BS / U834BS) 3-GHz Frequency Divider | |
| Fabricantes | TEMIC Semiconductors | |
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3-GHz Frequency Divider
U832BS / U834BS
Description
U832BS and U834BS use TEMIC’s advanced bipolar
process. RF input can be driven differential as well as
single ended. Low current consumption makes the device
suitable for mobile application.
D U832BS divides by 2
D U834BS divides by 4
D Very low current consumption (typically 12 mA)
D 3-GHz maximum operating frequency
Benefits
D Extended operation time due to very low current
consumption
D Only three external components
D Low RF input level reduces radiation problems
D Supply voltage, typically 5 V
D ESD protection in accordance with MIL-STD. 883
method 3015 class 2
Block Diagram
VS
8
2
2 2RFi
3 (only U834BS)
2.3 kW 2.3 kW
6
RFo
7
4 GND
1,5 N.C
Figure 1. Block diagram
Ordering Information
Extended Type Number
U832BS-FP
U834BS-FP
Package
SO8
SO8
93 7783 e
Remarks
TELEFUNKEN Semiconductors
Rev. A2, 27-Jan-97
1 (6)
Datasheet pdf - http://www.DataSheet4U.net/
1 page  
www.DataSheet.co.kr
U832BS / U834BS
Application
Master-Slave-D-Flip-Flops (MS-D-FF’s) can be used for
frequency division by feeding back the inverted output to
the data input. Typical for this kind of dividers is a free–
running oscillation of the first divider stage. Here, the
input sensitivity of the circuit is minimal (see data sheet
page 5: input sensitivity vs. frequency). An oscillation
frequency of, e.g., 3.5 GHz (related to the input) will
result in an output the part number of frequency of
3.5 GHz: 4 = 875 MHz. To indicate this, TEMIC’s self-
oscillating frequency dividers are ending with “S”
(U834BS-AFP). This oscillation is often used for the
quality control of ICs: the higher the frequency, the better
the performance. It occurs only if the offset voltage of the
input transistor pair is below a certain limit.
On the other hand, if this oscillation causes problems,
e.g., in frequency counters, an external offset may be
added. This can simply be done by connecting an ohmic
resistor from Pin 3 (RF input) to ground. Using a value of
R3 = 47 kW will stop self oscillation without degrading
the input sensitivity markly. Smaller values will decrease
the sensitivity especially at higher frequencies.
RF
input
100 pF
VBatt
1 nF
100 pF
1
2
3
< 50 k Ω
R3 4
U832BS
U834BS
8
470 pF
7
470 pF
6
18
2 U891BS 7
U893BSE
36
54
5
RF
output
Figure 5.
13291
Package Information
Package SO8
Dimensions in mm
5.00
4.85
5.2
4.8
3.7
1.4
0.4
0.25 0.2
0.10 3.8
1.27 6.15
3.81 5.85
85
8
TELEFUNKEN Semiconductors
Rev. A2, 27-Jan-97
5
technical drawings
according to DIN
specifications
13034
5 (6)
Datas
5 Page | ||
| Páginas | Total 6 Páginas | |
| PDF Descargar | [ Datasheet U834BS.PDF ] | |
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