UMA1022M Datasheet, PDF (10/20 Pages) NXP Semiconductors – Low cost dual frequency synthesizer for radio telephones

Philips Semiconductors
Low cost dual frequency synthesizer for
radio telephones
Product specification
UMA1022M
SYMBOL
PARAMETER
CONDITIONS
MIN.
Synthesizers reference divider input; pins 1 and 20
f_xtal
V_xtal(rms)
crystal reference oscillator frequency
3
sinusoidal input signal level between single-ended;
pins 1 and 20 (RMS value)
f_xtal = 6 to 20 MHz 35
f_xtal = 3 to 6 MHz
70
differential;
R_refc
R_refa
Z_i
C_i
NF
common reference division ratio
reference subdivider division ratio
input impedance (real part) per pin
typical pin input capacitance
small signal differential input noise
figure
f_xtal = 6 to 20 MHz 70
f_xtal = 3 to 6 MHz
140
8
1
f_xtal = 10 MHz; XON = 1 −
−
matched to a 4 kΩ
−
source; XON = 1
Phase detectors
f_PCmax
maximum loop comparison
−
frequency
Charge pump outputs; pins 4 and 17
V_CPA
output voltage compliance range;
0.4
RF synthesizer
V_CPB
output voltage compliance range;
0.4
IF synthesizer
I_ocp(err)
charge pump output current error note 1
−25
I_match
sink-to-source current matching
−
I_Lcp
charge pump off leakage current
V_CPA = ¹â„₂V_CCA;
−5
V_CPB = ¹â„₂V_CCB
Phase noise
N₉₀₀
RF synthesizer’s contribution to
f_xtal = 13 MHz;
−
close-in phase noise of 0.9 GHz VCO V_xtal = 0 dBm;
signal inside closed-loop bandwidth f_PC = 200 kHz
N_{1 800}
RF synthesizer’s contribution to
f_xtal = 13 MHz;
−
close-in phase noise of 1.8 GHz VCO V_xtal = 0 dBm;
signal inside closed-loop bandwidth f_PC = 200 kHz
N₁₈₀
IF synthesizer’s contribution
180 MHz VCO signal inside
closed-loop bandwidth
f_xtal = 13 MHz;
−
V_xtal = 0 dBm;
f_PC = 1000 kHz
TYP. MAX.
UNIT
−
20
−
250
−
250
−
500
−
500
−
1 023
−
16
4
−
2
−
4.5 −
MHz
mV
mV
mV
mV
kΩ
pF
dB
2000 −
kHz
−
V_CCA − 0.4 V
−
V_CCB − 0.4 V
−
+25
%
±5 −
%
±1 +5
nA
−86 −
−80 −
−104 −
dBc/Hz
dBc/Hz
dBc/Hz
1998 Dec 09
10