基于ADL5354设计的高性能RF混频方案
基于adl5354设计的高性能rf混频方案
adl5354是adi公司的高度线性双平衡(rf和lo平衡)rf混频器,输入频率从2300 mhz 到2900 mhz.平衡的无源混频器具有良好的lo-rf泄漏,优于-35dbm.if频率范围从30mhz到450mhz,功率转换增益8db,单边带(ssb)噪音10db,输入ip3为25dbm,输入p1为11dbm,lo典型驱动为0dbm.工作电压3.3v-5.0v,主要用在蜂窝无线基站接收器,无线链接下变换器等.本文介绍adl5354主要特性,方框图以及典型应用,评估板电路图和元件配置表.
the adl5354 uses a highly linear, doubly balanced, passive mixer core along with integrated rf and local oscillator (lo) balancing circuitry to allow single-ended operation. the adl5354 incorporates the rf baluns, allowing for optimal performance over a 2300 mhz to 2900 mhz rf input frequency range. the balanced passive mixer arrangement provides good lo-to-rf leakage, typically better than −35 dbm, and excellent intermodulation performance. the balanced mixer core also provides extremely high input linearity, allowing the device to be used in demanding cellular applications where in-band blocking signals may otherwise result in the degradation of dynamic performance. a high linearity if buffer amplifier follows the passive mixer core to yield a typical power conversion gain of 8.2 db and can be used with a wide range of output impedances.
the adl5354 provides two switched lo paths that can be used in tdd applications where it is desirable to ping-pong between two local oscillators. lo current can be externally set using a resistor to minimize dc current commensurate with the desired level of performance. for low voltage applications, the adl5354 is capable of operation at voltages down to 3.3 v with substantially reduced current. under low voltage operation, an additional logic pin is provided to power down (<300 μa) the circuit when desired.
the adl5354 is fabricated using a bicmos high performance ic process. the device is available in a 6 mm × 6 mm, 36-lead lfcsp and operates over a −40℃ to +85℃ temperature range.
adl5354主要特性:
rf frequency range of 2300 mhz to 2900 mhz
if frequency range of 30 mhz to 450 mhz
power conversion gain: 8 db
ssb noise figure of 10 db
input ip3 of 25 dbm
input p1db of 11 dbm
typical lo drive of 0 dbm
single-ended, 50 ω rf and lo input ports
high isolation spdt lo input switch
single-supply operation: 3.3 v to 5 v
exposed paddle, 6 mm × 6 mm, 36-lead lfcsp
adl5354应用:
cellular base station receivers
transmit observation receivers
radio link downconverters
图1.adl5354功能方框图
图2.adl5354典型应用电路图
图3.adl5354评估板电路图
adl5354评估板元件配置表:
图4.adl5354评估板顶层布局图
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adl5354是adi公司的高度线性双平衡(rf和lo平衡)rf混频器,输入频率从2300 mhz 到2900 mhz.平衡的无源混频器具有良好的lo-rf泄漏,优于-35dbm.if频率范围从30mhz到450mhz,功率转换增益8db,单边带(ssb)噪音10db,输入ip3为25dbm,输入p1为11dbm,lo典型驱动为0dbm.工作电压3.3v-5.0v,主要用在蜂窝无线基站接收器,无线链接下变换器等.本文介绍adl5354主要特性,方框图以及典型应用,评估板电路图和元件配置表.
the adl5354 uses a highly linear, doubly balanced, passive mixer core along with integrated rf and local oscillator (lo) balancing circuitry to allow single-ended operation. the adl5354 incorporates the rf baluns, allowing for optimal performance over a 2300 mhz to 2900 mhz rf input frequency range. the balanced passive mixer arrangement provides good lo-to-rf leakage, typically better than −35 dbm, and excellent intermodulation performance. the balanced mixer core also provides extremely high input linearity, allowing the device to be used in demanding cellular applications where in-band blocking signals may otherwise result in the degradation of dynamic performance. a high linearity if buffer amplifier follows the passive mixer core to yield a typical power conversion gain of 8.2 db and can be used with a wide range of output impedances.
the adl5354 provides two switched lo paths that can be used in tdd applications where it is desirable to ping-pong between two local oscillators. lo current can be externally set using a resistor to minimize dc current commensurate with the desired level of performance. for low voltage applications, the adl5354 is capable of operation at voltages down to 3.3 v with substantially reduced current. under low voltage operation, an additional logic pin is provided to power down (<300 μa) the circuit when desired.
the adl5354 is fabricated using a bicmos high performance ic process. the device is available in a 6 mm × 6 mm, 36-lead lfcsp and operates over a −40℃ to +85℃ temperature range.
adl5354主要特性:
rf frequency range of 2300 mhz to 2900 mhz
if frequency range of 30 mhz to 450 mhz
power conversion gain: 8 db
ssb noise figure of 10 db
input ip3 of 25 dbm
input p1db of 11 dbm
typical lo drive of 0 dbm
single-ended, 50 ω rf and lo input ports
high isolation spdt lo input switch
single-supply operation: 3.3 v to 5 v
exposed paddle, 6 mm × 6 mm, 36-lead lfcsp
adl5354应用:
cellular base station receivers
transmit observation receivers
radio link downconverters
图1.adl5354功能方框图
图2.adl5354典型应用电路图
图3.adl5354评估板电路图
adl5354评估板元件配置表:
图4.adl5354评估板顶层布局图
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