UMA1021M Datasheet, PDF (8/16 Pages) NXP Semiconductors – Low-voltage frequency synthesizer for radio telephones

Philips Semiconductors
Low-voltage frequency synthesizer
for radio telephones
Product specification
UMA1021M
CHARACTERISTICS
All values refer to the typical measurement circuit of Fig.5; V_DD1 = V_DD2 = 2.7 to 5.5 V; V_CC = 2.7 to 5.5 V; T_amb = 25 ^°C;
unless otherwise specified. Characteristics for which only a typical value is given are not tested.
SYMBOL
PARAMETER
CONDITIONS
MIN. TYP. MAX. UNIT
Supply; pins 4, 14 and 18
V_DD
digital supply voltage
V_DD1 = V_DD2; V_CC ≥ V_DD 2.7
−
5.5
V
V_CC
charge pump supply voltage
V_CC ≥ V_DD
2.7
−
5.5
V
I_DD1 + I_DD2
synthesizer digital supply current V_DD = 5.5 V
−
7
9.5
mA
I_CC
charge pump supply current
V_CC = 5.5 V;
−
3
3.8
mA
R_SET = 5.6 kΩ
I_CC(pd) + I_DD(pd) total supply current in
power-down mode
logic levels 0 V or V_DD −
5
50
µA
RF main divider input; pin 6
f_RF
V_RF(rms)
RF input frequency
AC-coupled input signal level
(RMS value)
R_s = 50 Ω
R_m
main divider ratio
Z_i
input impedance (real part)
f_RF = 1 GHz
f_RF = 2 GHz
C_i
typical pin input capacitance
f_RF = 1 GHz
f_RF = 2 GHz
Synthesizer reference divider input; pins 15 and 16
f_xtal
V_xtal(rms)
crystal reference input frequency
sinusoidal input signal level
between pins 15 and 16
(RMS value)
R_ref
reference division ratio
Z_i
input impedance (real part)
C_i
typical pin input capacitance
Phase detector
f_xtal = 13 MHz
f_xtal = 13 MHz
f_PCmax
maximum loop comparison
frequency
300
−
50
−
512
−
−
1
−
60
−
1
−
1
3
−
50
−
2 200
225
MHz
mV
131 071
−
kΩ
−
Ω
−
pF
−
pF
35
MHz
500
mV
8
2 047
−
10
−
kΩ
−
1.5
−
pF
−
2000 −
kHz
Charge pump current setting resistor input; pin 19
R_SET
external resistor connected
between pin 19 and ground
V_SET
regulated voltage at pin 19
R_SET = 5.6 kΩ
5.6
−
12
kΩ
−
1.2
−
V
1999 Jun 17
8