XT0502，高频头

	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

 

   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 specification

1-1 Receiving frequency range                 950MHz to 2150MHz

1-2 Input singal level per channel              -75dBm to -25dBm

1-3Nominal 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：