Philips Semiconductors Product data
SA8027
2.5 GHz low voltage, low power
RF fractional-N/IF integer frequency synthesizer
2001 Aug 21
6
CHARACTERISTICS
V
DDCP
= V
DD
= +3.0 V, T
amb
= +25 °C; unless otherwise specified.
SYMBOL
PARAMETER CONDITIONS MIN. TYP. MAX. UNIT
Supply
V
DD
Digital supply voltage 2.7 – 3.6 V
V
DDCP
Analog supply voltage V
DDCP
w
V
DD
2.7 – 3.6 V
I
Total
Synthesizer operational supply current V
DD
= +3.0 V
(with main and aux on)
– 7.7 – mA
I
Standby
Total supply current in power-down mode logic levels 0 or VDD – 1 – µA
RFin main divider input
f
VCO
VCO input frequency 500 – 2500 MHz
V
RFin
AC-coupled input signal level R
in
(external) = R
s
= 50 Ω;
sin
le-ended drive;
–18 – 0 dBm
max. limit is indicative
@ 500 to 2500 MHz
80 – 632 mV
PP
Z
RFin
Input impedance (real part) f
VCO
= 2.4 GHz – 300 – Ω
C
RFin
Typical pin input capacitance f
VCO
= 2.4 GHz – 1 – pF
N
main
Main divider ratio 512 – 65535
f
PCmax
Maximum loop comparison frequency indicative, not tested – – 4 MHz
AUX divider input
f
AUXin
Input frequency range 100 – 550 MHz
p
p
R
in
(external) = R
= 50 Ω;
–15 – 0 dBm
AUXin
-
u
u
v
max. limit is indicative
112 – 632 mV
PP
Z
AUXin
Input impedance (real part) f
VCO
= 500 MHz – 3.9 – kΩ
C
AUXin
Typical pin input capacitance f
VCO
= 500 MHz – 0.5 – pF
N
AUX
Auxiliary division ratio 128 – 16383
Reference divider input
f
REFin
Input frequency range from TCXO 5 – 40 MHz
V
REFin
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 – pF
R
REF
Reference division ratio SA = SM = ”000” 4 – 1023
Charge pump current setting resistor input
R
SET
External resistor from pin to ground 6 7.5 15 kΩ
V
SET
Regulated voltage at pin R
SET
= 7.5 kΩ – 1.22 – V
Charge pump outputs; R
SET
= 7.5 kΩ
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
DDCP
–10 +10 nA
V
PH
Charge pump voltage compliance 0.6 – V
DDCP
–0.7 V
