UPB587B*
1.0 GHz DIVIDE- BY- 2/4/8 PRESCALER UPB587G
*
B VERSION FOR HI-REL
APPLICATIONS ONLY
FEATURES
• HIGH FREQUENCY OPERATION TO 1 GHz
• LOW SUPPLY VOLTAGE:
2.2 V to 3.5 V
TEST CIRCUIT
V
CC
C
C
• LOW SUPPLY CURRENT:
5.5 mA
• AVAILABLE IN TAPE AND REEL
(G08 PACKAGE)
INPUT
C
C
1
2
3
4
8
C
7
M
2
6
C
5
C
C = 2200 pF
*
Re and Ro used on test circuit as indicated below.
M
1
Re*
OUTPUT
Ro*
DESCRIPTION
The UPB587 series of devices are silicon bipolar digital
prescalers which can be operated in divide-by-two, divide-by-
four or divide-by-eight mode. They feature frequency re-
sponse to 1 GHz, and operate from a single 3 volt supply
drawing only 5.5 milliamps. The series is available in two
package styles: 8 lead ceramic flat pack (UPB587B), and an
8 pin plastic mini-flat package (UPB587G). Applications in-
clude: synthesizer for DBS receiver and telecommunication
applications. The low DC voltage required and power-saving
current draw make them ideal for hand-held, battery-powered
applications.
BLOCK DIAGRAM
V
CC
1
1
V
CC
2
8
IN
BYPASS
2
3
AMP
1/2
1/2
1/2
BUF
7
OUT
5
M1
6
M2
4
GND
ELECTRICAL CHARACTERISTICS
1
(T
A
= -20 to +75°C, V
CC
= 2.2 to 3.5 V)
PART NUMBER
PACKAGE OUTLINE
SYMBOLS
I
CC
f
IN
PARAMETERS AND CONDITIONS
Supply Current
Frequency Response at P
IN
= -20 to 0 dBm,
Divide-by-eight
Divide-by-four
Divide-by-two
P
IN
= -18 to 0 dBm,
Divide-by-eight
Divide-by-four
Divide-by-two
Input Power at:
f
IN
= 50 to 100 MHz
f
IN
= 100 to 300 MHz, Divide-by-two
f
IN
= 100 to 600 MHz, Ddivide-by-four
f
IN
= 100 to 1000 MHz, Divide-by-eight
UNITS
mA
MHz
MHz
MHz
MHz
MHz
MHz
dBm
dBm
dBm
dBm
V
P-P
°C/W
°C/W
100
100
100
50
50
50
-18
-20
-20
-20
0.1
0.3
50
270
MIN
UPB587B, UPB587G
BF08, G08
TYP
5.5
MAX
7.5
1000
600
300
1000
600
300
0
0
0
0
P
IN
V
O
R
TH (J-C)
R
TH (J-A)
Output Voltage, at f
IN
= 0.5 GHz, P
IN
= -10 dBm, Z
O
= 200
Ω
Thermal Resistance, Junction to Case
(UPB587B)
Thermal Resistance, Junction to Ambient
(UPB587G)
2
Notes:
1. V
CC1
= 2.2 V to 3.5 V, V
CC2
= 2.2 to 3.5 V.
2. Mounted on a 5 x 5 x 0.16 mm epoxy glass circuit board.
3. To improve impedance match to a 50
Ω
load, a 1.2 KΩ shunt resistor on the output line is recommended.
California Eastern Laboratories
NEC [ NEC ]
