SP4740 Datasheet, PDF (3/6 Pages) Zarlink Semiconductor Inc – 1·3GHz 4256 PRESCALER WITH LOW CURRENT AND LOW RADIATION

SP4740
ELECTRICAL CHARACTERISTICS
These characteristics are guaranteed over the following conditions (unless otherwise stated):
T
AMB
=
0°C
to
170°C,
V_CC
=
4·5V
to
5·5V
(Test
circuit
see
Fig.
3)
Characteristic
Value
Pin
Units
Min. Typ. Max.
Conditions
Supply current, I_CC
Input sensitivity
50MHz
150MHz to 1000MHz
1·1GHz
1·2GHz
1·3GHz
Input overload
Input impedance
8
2,3
2,3 300
400
2,3
35
50
mA _{VCC = 15V}
RMS sinewave
3
5 mV
1
5 mV
1·5
mV
2
mV
4
mV
mV _{50MHz to 500MHz}
mV _{500MHz to 1·3GHz}
50
Ω _{See Fig. 6}
2
pF
Output voltage
High
Low
5 3·3
5
V _{Sourcing 0·2mA}
0·1
V
Sinking 2mA
NOTE
The difference between the maximum input sensitivity and minimum overload voltage is the guaranteed dynamic range. Input signal levels should
be maintained within these limits at all frequencies.
50 Ω
SIGNAL
GENERATOR
50 Ω
SAMPLING
SCOPE
180°
HYBRID
0V
COUPLER D
15V
1n
A
C
B
50
1n 0·1µ
1
8
2
7
SP4740
3
6
4
5
115V
6·5k
1·65k
Fig. 3 Test circuit
15V
1n
FROM


UHF
INPUT
50Ω 
SOURCE VHF INPUT
1n
1 TURN
12p
100p
1
8
2
7
SP4740
3
6
4
5
0·1µ
Fig. 4 Application circuit
CMOS OR
TTL GATE
0V
OUTPUT
0V
2