Texas Instruments High Performance Frequency Synthesizer System with Integrated VCO LMX25312265EVAL/NOPB LMX25312265EVAL/NOPB 데이터 시트
제품 코드
LMX25312265EVAL/NOPB
L M X 2 5 3 1 L Q 2 2 6 5 E E V A L U A T I O N B O A R D O P E R A T I N G I N S T R U C T I O N S
General Description
The LMX2531LQ2265E Evaluation Board simplifies evaluation of the LMX2531LQ2265E PLL/VCO
synthesizer system. The board enables all performance measurements with no additional support
circuitry. The evaluation board consists of a LMX2531LQ2265E device, and a cable assembly.
The cable assembly is bundled with the evaluation board for connecting to a PC through the parallel
printer port. By means of MICROWIRE
synthesizer system. The board enables all performance measurements with no additional support
circuitry. The evaluation board consists of a LMX2531LQ2265E device, and a cable assembly.
The cable assembly is bundled with the evaluation board for connecting to a PC through the parallel
printer port. By means of MICROWIRE
TM
serial port emulation, the CodeLoader software included can
be run on a PC to facilitate the LMX2531LQ2265E internal register programming for the evaluation and
measurement. In addition to this cable assembly, there is a microwire buffer board that ensures that
the proper voltage levels are provided to the microwire inputs and also this reduces digital noise from
computers through the parallel port.
measurement. In addition to this cable assembly, there is a microwire buffer board that ensures that
the proper voltage levels are provided to the microwire inputs and also this reduces digital noise from
computers through the parallel port.
Loop Filter
Phase Margin
33.7 deg
K
φ
90 uA
Loop Bandwidth
7.0 kHz
Fcomp
2.5 MHz
Crystal Frequency
10 MHz
Output Frequency
2178 – 2400 MHz (DIV2=0)
1089 – 1200 MHz (DIV2=1)
Supply Voltage
3.0 Volts
VCO Gain
13.5 MHz/Volt
VCO
CPout
47
pF
2.
7 nF
47
K
Ω
100 pF
100 pF
40 KΩ
40 KΩ
Vtune
3