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Philips Semiconductors Product specification
SA70161.3GHz low voltage fractional-N synthesizer
1999 Nov 04
5
CHARACTERISTICS
V
DDCP
= V
DD
= +3.0V, T
amb
= +25°C; unless otherwise specified.
SYMBOL
PARAMETER CONDITIONS MIN. TYP. MAX. UNIT
Supply; pins 3, 9
V
DD
Digital supply voltage 2.7 – 5.5 V
V
DDCP
Analog supply voltage V
DDCP
= V
DD
2.7 – 5.5 V
I
DDTotal
Synthesizer operational total supply current V
DD
= +3.0V – 6.2 7.3 mA
I
Standby
Total supply current in power-down mode logic levels 0 or VDD – 1 TBD µA
RFin main divider input; pins 5, 6
f
VCO
VCO input frequency 350 – 1300 MHz
V
RFin(rms)
AC-coupled input signal level R
in
(external) = R
s
= 50Ω;
single-ended drive;
max. limit is indicative
@ 500 to 1300 MHz
–18 – 0 dBm
Z
IRFin
Input impedance (real part) f
VCO
= 1.2 GHz – 625 – Ω
C
IRFin
Typical pin input capacitance f
VCO
= 1.2 GHz – 1.0 – pF
N
main
Main divider ratio 512 – 65535
f
PCmax
Maximum loop comparison frequency indicative, not tested – – 4 MHz
Reference divider input; pins 11, 12
f
REFin
Input frequency range from TCXO 5 – 40 MHz
VRFin AC-coupled input signal level single-ended drive;
max. limit is indicative
360 – 1300 mV
PP
Z
REFin
Input impedance (real part) f
REF
= 20 MHz – 10 – kΩ
C
REFin
Typical pin input capacitance f
REF
= 20 MHz – 1.0 – pF
R
REF
Reference division ratio 4 – 1023
Charge pump current setting resistor input; pin 10
R
SET
External resistor from pin to ground 6 7.5 15 kΩ
V
SET
Regulated voltage at pin R
SET
=7.5 kΩ – 1.25 – V
Charge pump outputs (including fractional compensation pump); pin 8; R
SET
=7.5kΩ, FC=80
I
CP
Charge pump current ratio to I
SET
1
Current gain I
PH
/I
SET
–15 +15 %
I
MATCH
Sink-to-source current matching V
PH
=1/2 V
DDCP
. –10 +10 %
I
ZOUT
Output current variation versus V
PH
2
V
PH
in compliance range –10 +10 %
I
LPH
Charge pump off leakage current V
PH
=1/2 V
CC
–10 +10 nA
V
PH
Charge pump voltage compliance 0.7 – V
DDCP
–0.8 V