GSM850 Datasheet, PDF (13/38 Pages) Silicon Laboratories – Single 8x8 mm package CMOS process technology Intergrated GSM/GPRS transceiver including

Aero I
Table 7. Frequency Synthesizer Characteristics
(V_DD = 2.7 to 3.0 V, T_A = –20 to 85 °C)
Parameter
Symbol Test Condition
Min
Typ
Max
RF1 VCO Frequency¹
f_RF1
GSM 850 band
1737.8 — 1787.8
E-GSM 900 band 1849.8 — 1919.8
DCS 1800 band 1804.9 — 1879.9
RF2 VCO Frequency¹
PCS 1900 band 1929.9 — 1989.9
f_RF2
GSM 850 band
1272
—
1297
E-GSM 900
1279
—
1314
DCS 1800 band
1327
—
1402
IF VCO Frequency¹
PCS 1900 band
1423
—
1483
f_IF
GSM 850 band
—
896
—
E-GSM 900 band
—
798
—
880–895 MHz
900–915 MHz
E-GSM 900 band
895–900 MHz
—
790
—
DCS 1800 band
—
766
—
PCS 1900 band
—
854
—
RF1 PLL Phase Detector Update
Frequency
f_φ
GSM input,
—
200
—
RFUP = 0
DCS/PCS inputs,
RFUP = 1
—
100
—
IF and RF2 PLL Phase Detector
Update Frequency
RF1 VCO Pushing²
RF2 VCO Pushing²
IF VCO Pushing²
RF1 VCO Pulling²
RF2 VCO Pulling²
IF VCO Pulling²
RF1 PLL Phase Noise²
RF2 PLL Phase Noise²
IF PLL Phase Noise²
RF1 PLL Spurious²
RF2 PLL Spurious²
IF PLL Spurious²
f_φ
—
200
—
Open Loop
—
—
—
VSWR = 2:1,
—
all phases, open loop
—
—
3 MHz offset
—
400 kHz offset
—
400 kHz offset
—
3 MHz offset
—
400 kHz offset
—
400 kHz offset
—
500
400
300
400
100
100
–144
–126
–128
–95
–80
–80
—
—
—
—
—
—
–138
–121
–123
–83
–75
–70
Notes:
1. For the GSM input, the RF1 VCO is divided by two. During transmit, the IF VCO is divided by two.
2. Specifications are guaranteed by characterization.
Unit
MHz
MHz
MHz
MHz
MHz
MHz
MHz
MHz
MHz
MHz
MHz
MHz
MHz
kHz
kHz
kHz
kHz/V
kHz/V
kHz/V
kHz_PP
kHz_PP
kHz_PP
dBc/Hz
dBc/Hz
dBc/Hz
dBc
dBc
dBc
Rev. 1.0
13