2.5 GHz
UPB586B
UPB586G
DIVIDE- BY- 512/256 PRESCALER
FEATURES
TEST CIRCUIT
• HIGH FREQUENCY OPERATION TO 2.5 GHz
V
CC
M
• WIDE BAND OPERATION
2200 pF*
2200 pF
2200 pF
2200 pF
1
2
3
4
8
7
6
5
• SINGLE SUPPLY VOLTAGE: VCC = 5 V ±10%
INPUT
OUTPUT
• AVAILABLE IN TAPE AND REEL
(G08 PACKAGE)
2200 pF
DESCRIPTION
*Not required if M is grounded.
The UPB586 series of devices are silicon bipolar prescalers
which can be operated in divide-by-256 or divide-by-512
mode. They feature high frequency response and operate
from a single 5 volt supply. The series is available in two
package styles: 8 lead ceramic flat pack (UPB586B) and an
8 pin plastic mini-flat package (UPB586G).
Note: Because of the high internal gain and gain compression of the
UPB586, thisdeviceispronetoself-oscillationintheabsenceofanRF
inputsignal.IfthedevicewillbeusedinanapplicationwhereDCpower
will be applied in the absence of an RF input signal, this self-oscillation
can be suppressed by any of the following means:
* Add a shunt resistor from the RF input line to ground. The
blocking capacitor should be between the resistor and the
UPB586, but physical separation should be minimized. Typically a
resistor value between 50 and 100 ohms will suppress the self-
oscillation.
Applications include frequency synthesis, division and scal-
ing.
* Apply a DC offset voltage of +3.0 volts to the INPUT pin. The
voltage source should be isolated from the INPUT pin by a series
1000 ohm resistor.
* Apply a DC offset voltage of +1.5 volts to the BYPASS pin. The
voltage source should be isolated from the BYPASS pin by a
series 1000 ohm resistor.
RECOMMENDED
OPERATING CONDITIONS (TA = 25°C)
SYMBOL
PARAMETER
SupplyVoltage
OperatingTemperature
UNITS
RATINGS
4.5 to 5.5
-20 to +75
All these approaches reduce the input sensitivity of the UPB586 (by as
muchas3dBfortheexampleofa50ohmshuntresistor),butotherwise
have no affect on the reliability or other electrical characteristics of this
device.
VCC
V
TOP
°C
ELECTRICAL CHARACTERISTICS1 (TA = -20 to +75°C, VCC = 5 V)
PART NUMBER
PACKAGE OUTLINE
UPB586B,UPB586G
BF08, G08
SYMBOLS
PARAMETERS AND CONDITIONS
UNITS
MIN
TYP
MAX
ICC
fIN
Supply Current, TA = 25°C
mA
19
28
37
Frequency Response at
PIN = -15 to -10 dBm
PIN = -10 to -5 dBm
PIN = -5 to +5 dBm
GHz
GHz
GHz
0.5
0.5
1.3
2.3
2.5
2.5
PIN
Input Power at
fIN = 0.5 to 1.3 GHz
fIN = 1.3 to 2.3 GHz
fIN = 2.3 to 2.5 GHz
dBm
dBm
dBm
-15
-15
-10
-5
+5
+5
POUT
Power Output at fIN = 2 GHz, PIN = 0 dBm,
TA = 25°C
dBm
°C/W
°C/W
-11
-7
RTH (J-C)
RTH (J-A)
Thermal Resistance, Junction to Case
(UPB586B)
50
Thermal Resistance, Junction to Ambient
(UPB586G)2
270
Notes:
1. VCC = 5 V ± 10% (unless otherwise noted): ZS = ZO = 50 Ω.
2. Mounted on a 5 x 5 x 0.16 mm epoxy glass circuit board.
California Eastern Laboratories