Prescaler
DN8506S
Prescaler IC for TV and VCR tuners
s
Overview
The DN8506S is a 1.1GHz prescaler IC for television
and VCR tuners. It is made up of ECL flip-flop circuits
divided by 128 and 136.
0.4±0.25
0.6±0.3
Unit: mm
1
8
5.0±0.3
s
Features
•
Power dissipation: 5 V, 26 mA
•
The dividing ratios of 1/128, 1/136
•
ECL-level output
1.27
4
5
•
Television, VCR
0.1±0.1
0.3
4.2±0.3
6.5±0.3
SOP008-P-0225A
s
Block Diagram
V
CC
In 2
Ref. 8
D Q
RF amp.
4 GND
PSC block
GND
T Q
D Q
T Q
D Q
T Q
D Q
T Q
D Q
Output amp.
5 Out
D Q
D Q
T Q
T Q
T Q
1 V
CC
PSC 7
N.C. 3
N.C. 6
1.5±0.2
0.15
0.65
s
Applications
1
DN8506S
s
Pin Descriptions
Pin No.
1
2
3
4
5
6
7
8
Description
V
CC
(5
±
0.5 V)
Input
N.C.
GND
Output
N.C.
PSC
Ref. (bias)
Prescaler
s
Absolute Maximum Ratings
Parameter
Supply voltage
Input voltage
Power dissipation
Operating ambient temperature
*
Storage temperature
*
Symbol
V
CC
V
I
P
D
T
opr
T
stg
Rating
6
2.5
361
−20
to
+80
−55
to
+125
Unit
V
V[p-p]
mW
°C
°C
Note) *: Except for the operating ambient temperature and storage temperature, all ratings are for T
a
=
25°C.
s
Recommended Operating Range
Parameter
Supply voltage
Symbol
V
CC
Range
4.5 to 5.5
Unit
V
s
Electrical Characteristics at T
a
=
25°C
Parameter
Supply current
Output amplitude
Input voltage
*
Symbol
I
CC
V
O
V
IN1
V
CC
=
5.0 V
V
CC
=
5.0 V, f
=
1 GHz, 0 dBm
V
CC
=
5.0 V,
f
IN
=
150 MHz to 900 MHz
V
IN2
High-level input voltage
Low-level input voltage
V
IH
V
IL
V
CC
=
5.0 V,
f
IN
=
80 MHz to 1 100 MHz
PSC pin
PSC pin
Conditions
Min
0.8
−24
40
−18
80
0.7
×
V
CC
Typ
26
1.2
Max
35
1.5
0.3
×
V
CC
Unit
mA
V[p-p]
dBm
mV[p-p]
dBm
mV[p-p]
V
V
Note) *: The input level that allows a stipulated frequency-devided output.
2
Prescaler
s
Electrical Characteristics at T
a
=
25°C (continued)
•
Design reference data
Note) The characteristics listed below are theoretical values based on the IC design and are not guaranteed.
DN8506S
Parameter
Supply current
Input voltage
*
Symbol
I
CC
V
IN1
V
IN2
V
CC
=
5.5 V
Conditions
V
CC
=
5.0
±
0.5 V
f
IN
=
150 MHz to 900 MHz
V
CC
=
5.0
±
0.5 V
f
IN
=
70 MHz to 1 100 MHz
Min
30
60
Typ
Max
42
Unit
mA
1 000 mV[p-p]
1 000
Note) *: The input level that allows a stipulated frequency-devided output.
3
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