| | 国诚新特 | 型号 | XT0502 | | 产品类型 | 标清 | 接收频道 | 950MHZ~~2150MHZ | | 记忆数 | 1（个） | 功耗 | 0.7（W） | | 电源 | DC-3.3V | 产地 | 广东省深圳市 | | 材 | 金属外壳封装 | 电源电压 | DC-3.3V（V） | | 制式 | DVB_S |
高频头XT0502为国诚新特科技自主研发的产品，其做工材料均采用元器件，电路板做工精细，工整，性能良。为保XT0502高产出，先后投入五十多万资金于检测设备的开发，力保每个产品在出厂前，都经过三道检测，为做到真正的全检模式，每个产品均贴有条码，每个产品的各项性能参数均可查看。其在使用功能上可完全取代夏普原装BS2S7HZ0502A. 规格书如下：DEVICE SPECIFICATION FOR XT0502 This specification covers L-band to I and Q base-band tuner intended for use in digital modulated satellite receiver(DVB-S).[1] General specification1-1 Receiving frequency range 950MHz to 2150MHz1-2 Input singal level per channel -75dBm to -25dBm1-3Nominal RF input impedance 75 ohm (F-connector)1-4Local frequency range 950 MHz to 2150MHz 1-5Channel Selection system PLL synthesizer(Clock:16MHz/4)1-6 Local step frequency 500kHz 1-7 AGC input voltage 0V to 3.3V 0V : 3.3 : Min gain 1-8 I/Q Output LPF cut off frequency(-3dB) 8MHz to 36MHz, variable(2 MHz step) 1-9 Nominal I/Q output level 0.5Vp-p at 1kohm load impedance 1-10 Nominal I/Q output impedance 50ohm 1-11 Operating Voltage B2,B4 3.3V± 0.15V DC 1-12Absolute maximum rating voltage B1A 25V DC, 400mA Max. B2,B4 -0.3~4.0V DC AGC,SDA,SCL -0.3~B2+0.3 V DC 1-13Circuit block diagram 1-14Connection diagram 1-15 Mass 25g 1-16 Storage condition Temperature 15 to 35 Humidity 25 %RH to 75 %RH Period 6 months 1-17 Environmental characteristics RoHS compliant (RoHS refers to the "DIRECTIVE 2002/95/EC OF THE EUROPEAN PARLIAMENT AND OF THE COUNCIL of 27 January 2003 on the restriction of the use of certain hazardous substances in electrical and electronic equipment.") 1-18 Attention items: 1) This unit contains components that can be damaged by electro-static discharge. Before handling this unit, ground your hands, tools, working desks and equipment to protect the unit from Electronic Static Destroy. 2) Avoid following actions; a) to store this unit in the place of the high temperature and humidity. b) to exe this unit to corrosive gases. [2] Test condition 2-1 Supply voltage B2,B4 3.3V ± 0.1V DC 2-2 Ambient temperature 25℃ ± 5℃ 2-3 Ambient humidity 65％± 5％ 2-4 I/Q output level 0.5Vp-p(at 1kohm load) [3] Electrical specification (Testing Condition is showed from 2-1 to 2-4)No | ITEM | SPECIFICATION | CONDITION | MIN | TYP | MAX | UNIT | 3-1 | Noise Figure | | 9 | 20 | dB | at AGC voltage=0V | 3-2 | RF input VSWR | | 2.0 | 2.5 | | 950MHz to 2150MHz | 3-3 | Gain deviation | | 7 | 10 | dB | 950MHz to 2150MHz | 3-4 | AGC control range | 72 | 78 | | dB | AGC voltage: 0 to 3.3V | 3-5 | 3rdorder intermodulation(2 tone) | 40 | 60 | | dB | input level is -25dBm desired signal : Fo undesired signal : (Fo+29.5MHz,Fo+59MHz)or (Fo-29.5MHz,Fo-59MHz) LPF_Fc=20MHz | 3-6 | I/Q phase balance | -4 | 0 | +4 | deg. | freq. offset is 100kHz | 3-7 | I/Q gain balance | -2 | 0 | +2 | dB | freq. offset is 100kHz | 3-8 | Pass band flatness of BB LPF | | | 2 | dB | 0.1MHz to fc×0.7 | 3-9 | Local oscillator signal leak at RF input terminal | | -68 | -63 | dBm | 950 to 2150 MHz | 3-10 | Phase noise | 1kHz offset | | -70 | -50 | dBc/Hz | measured at I/Q out | 10kHz offse | | -78 | -76 | dBc/Hz | 100kHz offset | | -85 | -78 | dBc/Hz | 3-11 | Reference leak | | -40 | -30 | dBc | measured at I/Q out | 3-12 | PLL lock up time | | 10 | 50 | ms | within VT±5% VT is tuning voltage | 3-13 | 1st Oscillator frequency error | -500 | | 500 | kHz | -10℃ to +60℃ | 3-14 | Current consumption | B2 3.3V | | 200 | 215 | mA | | B4 3.3V | | 25 | 40 | mA | AGC | | ±0.1 | ±1 | mA | 3-15 | Clock out level | 1.2 | 1.7 | | Vpp | high impedance(*1) measured by FET probe | 3-16 | Clock out frequency error | -80 | 0 | +80 | ppm | -10℃to +60℃ | 3-17 | RF output VSWR | | 2.0 | 2.5 | | 950MHz to 2150MHz measured at RF out | 3-18 | RF output gain | -5 | 0 | +5 | dB |
封装脚位图如下：
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