Features: Small Size Small 5.0 mm x 5.0 mm x 0.75 mm 28-Pin LLP Package
RF/GPS Synthesizer System
Integrated RF VCO
Integrated GPS VCO
Integrated Loop Filter
Low Spurious, Low Phase Noise Fractional-N RF PLL
Based on 11-bit Delta Sigma Modulator
10 kHz Frequency Resolution
IF Synthesizer System I nteger-N IF PLL Programmable Charge Pump Current Levels Programmable Frequencies
Supports Various Reference Oscillator Frequencies 19.20/19.68 MHz
Fast Lock Time: 500 µs
Low Current Consumption 17 mA at 2.8 V
2.7 V to 3.3 V Operation
Digital Filtered Lock Detect Output
Hardware and Software Power Down ControlApplication Korean PCS CDMA Systems with GPS
Korean Cellular CDMA Systems with GPSPinout
Specifications
| Parameter |
Symbol |
Ratings |
Units |
| Supply Voltage |
VCC, VDD |
0.3 to 3.6 |
V |
Voltage on any pin
to GND |
VI |
-0. 3 to VDD+0.3 |
V |
| -0. 3 to VCC+0.3 |
Storage Temperature
Range |
TSTG |
-65 to 150 |
°C |
| VCO Freq Range |
954-980, 1052-1078, 1392, 1490MHz |
| PLL Type |
PLL + VCO |
| Wireless Standard |
CDMA+GPS |
| LVCMOS Outputs |
2 |
| Integrated Loop Filter |
Yes |
| RF PLL |
Sigma-Delta |
| IF PLL |
Integer |
| Phase Noise |
-139 dBc/Hz |
| Frequency Offset |
at 900kHz |
| Supply Current |
17 mA |
| Supply Min |
2.7 Volt |
| Supply Max |
3.3 Volt |
| Temperature Min |
-30 deg C |
| Temperature Max |
85 deg C |
| View Using Catalog |
DescriptionLMX2522 and LMX2532 are highly integrated, high performance, low power frequency synthesizer systems optimized for Korean PCS (K-PCS) with GPS and Korean Cellular (K-Cellular) with GPS, CDMA (1xRTT, IS-95) mobile handsets. Using a proprietary digital phase locked loop technique, LMX2522 and LMX2532 generate very stable, low noise local oscillator signals for up and down conversion in wireless communications devices.
LMX2522 and LMX2532 include a RF voltage controlled oscillator (VCO), a GPS VCO, a loop filter, and a fractional-N RF PLL based on a delta sigma modulator. In concert these blocks form a closed loop RF and GPS synthesizer system. LMX2522 supports the Korean PCS band with GPS and LMX2532 supports the Korean Cellular band with GPS.
LMX2522 and LMX2532 include an Integer-N IF PLL also. For more flexible loop filter designs, the IF PLL includes a 4-level programmable charge pump. Together with an external VCO and loop filter, LMX2522 and LMX2532 make a complete closed loop IF synthesizer system. Serial data is transferred to the device via a three-wire MICROWIRE interface (DATA, LE, CLK). Operating supply voltage ranges from 2.7 V to 3.3 V. LMX2502 and LMX2512 feature low current consumption: 17 mA at 2.8 V. LMX2522 and LMX2532 are available in a 28-pin leadless leadframe package (LLP).
LMX2522 and LMX2532 are highly integrated, high performance, low power frequency synthesizer systems optimized for Korean PCS (K-PCS) with GPS and Korean Cellular (K-Cellular) with GPS, CDMA (1xRTT, IS-95) mobile handsets. Using a proprietary digital phase locked loop technique, LMX2522 and LMX2532 generate very stable, low noise local oscillator signals for up and down conversion in wireless communications devices.
LMX2522 and LMX2532 include a RF voltage controlled oscillator (VCO), a GPS VCO, a loop filter, and a fractional-N RF PLL based on a delta sigma modulator. In concert these blocks form a closed loop RF and GPS synthesizer system. LMX2522 supports the Korean PCS band with GPS and LMX2532 supports the Korean Cellular band with GPS.
LMX2522 and LMX2532 include an Integer-N IF PLL also. For more flexible loop filter designs, the IF PLL includes a 4-level programmable charge pump. Together with an external VCO and loop filter, LMX2522 and LMX2532 make a complete closed loop IF synthesizer system.
Serial data is transferred to the device via a three-wire MICROWIRE interface (DATA, LE, CLK).
Operating supply voltage ranges from 2.7 V to 3.3 V. LMX2502 and LMX2512 feature low current consumption: 17 mA at 2.8 V.
LMX2522 and LMX2532 are available in a 28-pin leadless leadframe package (LLP).
Design Tools
| Title |
Size in Kbytes |
Date |
|
|
|
| LMX2532 Evaluation Board Instructions |
666 Kbytes |
28-Jul-2003 |
View Online |
Download |
|
If you have trouble printing or viewing PDF file(s), see Printing Problems.
|
More Application Notes
| Title |
Size in Kbytes |
Date |
|
| AN-1879: Application Note 1879 Fractional N Frequency Synthesis |
511 Kbytes |
10-Dec-08 |
Download |
| AN-1821: Application Note 1821 CPRI Repeater System |
1497 Kbytes |
15-May-08 |
Download |
| AN-1865: Application Note 1865 Frequency Synthesis and Planning for PLL Architectures |
151 Kbytes |
6-Feb-09 |
Download |
If you have trouble printing or viewing PDF file(s), see Printing Problems.
|
LMX2532 Data Sheet
