U893BSE
TELEFUNKEN Semiconductors
Rev. A1, 23-Aug-96
1 (7)
1.3 GHz Prescaler for PLL's in TV, CATV and SAT TV Tuners
Technology: Bipolar
Features
D Extrem low current consumption (typ. 18 mA)
D Output harmonics strongly reduced
D 3 scaling factors 64/128/256 programmable at Pin 5
D High input sensitivity
D Emitter follower output stage
D Electrostatic protection according to MILSTD. 883
D Pin compatible to U833BSE
Case
8 pin dual inline plastic
(U893BSE)
8 pin SO plastic
(U893BSE-FP)
6 pin SIP plastic
(U893BSE-SP)
Block Diagram
U893BSE
TELEFUNKEN Semiconductors
Rev. A1, 23-Aug-96
2 (7)
Pin Configuration
Pin
Function (DIP8, SO8)
1
n.c.
2, 3
Input
4
Ground
5
Switch 64/128/256
6, 7
Output
8
V
S
Pin
Function (SIP6)
1
Ground
2
Switch 64/128/256
3
Output
4
V
S
5, 6
Input
Absolute Maximum Ratings
Reference point Pin 4 (1), unless otherwise specified
Parameters
Symbol
Value
Unit
Supply voltage
Pin 8 (4)
V
S
6
V
Input voltage range
Pin 2, 3, 5 (2, 5, 6)
V
i
0 to V
S
V
Junction temperature
T
j
125
C
Ambient temperature range
T
amb
25 to +85
C
Storage temperature range
T
stg
40 to +125
C
Thermal Resistance
Parameters
Symbol
Maximum
Unit
Junction ambient
DIP8
R
thJA
100
K/W
SIP6
R
thJA
100
K/W
SO8
R
thJA
175
K/W
Electrical Characteristics
V
S
= 4.5 to 5.5 V, T
amb
= 0 to 70
C, referred to test circuit, unless otherwise specified
Parameters
Test Conditions / Pin
Symbol
Min.
Typ.
Max.
Unit
Supply voltage range
Pin 8 (4)
V
S
4.5
5.5
V
Supply current
V
S
= 5 V
Pin 8 (4)
I
S
21
25
mA
Input sensitivity
1)
R
G
= 50
W
f
i
= 70 to 1100 MHz
Pin 2, 3 (5,
6)
v
i
10
mV
f
i
= 1100 to 1200 MHz
Pin 2, 3 (5,
6)
v
i
15
mV
f
i
= 1200 to 1300 MHz
Pin 2, 3 (5,
6)
v
i
20
mV
Large signal compatibility
R
G
= 50
W
Pin 2, 3 (5,
6)
V
i
300
mV
1)
RMS-voltage calculated from the measured available power
U893BSE
TELEFUNKEN Semiconductors
Rev. A1, 23-Aug-96
3 (7)
Parameters
Test Conditions / Pin
Symbol
Min
Typ
Max
Unit
Frequency range
f
imin
70
MHz
q
y
g
f
imax
1300
MHz
Emitter follower output
Voltage swing each output
f
i
1000 MHz, C
L
= 13 pF,
SF = 1:64
Pin 6, 7 (3)
V
O
0.6
0.7
V
pp
Output impedance
Pin 6, 7 (3)
Z
O
200
W
3rd order harmonics
suppression
f
i
= 700 to 900 MHz,
C
L
= 13 pF, SF = 1:64
Pin 6, 7 (3)
20
log
V
O3f
V
O1f
30
dB
Switching voltage for
scaling factor (SF)
1:64
Pin 5 (2)
V
SF
open
g
(
)
1:128
V
SF
V
S
0.5
V
1:256
V
SF
0
0.3
V
Switching current
V
S
= 5 V
Pin 5 (2)
g
1:128 V
SF
= 5 V
I
SF
150
mA
1:256 V
SF
= 0 V
I
SF
150
mA
Test Circuits
U893BSE
TELEFUNKEN Semiconductors
Rev. A1, 23-Aug-96
4 (7)
Output Circuit
Emitter follower output
U893BSE
TELEFUNKEN Semiconductors
Rev. A1, 23-Aug-96
5 (7)
Input Sensitivity
Dimensions in mm
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