4.5 GHz 超高动态范围双通道差分放大器
ADL5566的增益为16 dB。对于单端输入配置，增益降低为14 dB。每个放大器各使用两个外部串联电阻可扩展放大器的增益灵活性，并允许差分输入选择0 dB至16 dB范围内的任意增益；允许单端输入选择0 dB至14 dB范围内的任意增益。此外，输出(VOCM)电平低至1.2 V时，该器件可保持低失真性能，在最高2 V p-p的交流电平下，提供额外的CMOS ADC驱动能力。
采用3.3 V电源供电时，ADL5566的静态电流典型值为每个放大器70 mA。禁用时，每个放大器功耗小于3.5 mA，且100 MHz时的输入至输出隔离为−25 dB。
ADL5566采用ADI公司的高速SiGe工艺制造，提供紧凑型4 mm × 4 mm、24引脚LFCSP封装，工作温度范围为−40°C至+85°C。
ADL5566-EVALZ is a fully populated, 4-layer, FR4-based evaluation board. For normal operation it requires a single 3 V - 5 V/100 mA power supply. The power supply should be connected to the test loops labeled VCC and GND. The RF input signals are applied to the SMA connectors labeled VIN1 and VIP2. The RF outputs are available at the SMA connectors labeled VOP1 and VON2. The evaluation board may be converted to a fully differential input and output by installing SMA connectors VIP1, VIN2, VON1, VOP2, and removing R3, R4, R25, R26, installing 0 Ω jumpers R1, R2, R27, R26, removing transformers, T1, T2, T3, T4, and placing jumpers across the transformer pads. The 3 pin headers, ENBL_1 and ENBL_2 control the enable function. Test loops, VCOM-1 and VCOM-2 provide an interface for adjusting the common mode voltage.
The AD-FMCOMMS6-EBZ evaluation board is a 400MHz to 4.4GHz receiver based on the AD9652 dual 16-bit analog to digital converter (ADC), the ADL5566 High Dynamic Range RF/IF Dual Differential Amplifier and the ADL5380 quadrature demodulator. This is an I and Q demodulation approach to direct convert (also known as a homodyne or zero IF) receiver architecture. This topology will provide image rejection and early implementation of the differential signal environment. There is an amplification stage to maintain the full-scale input to the ADC. The local oscillator and ADC clock are on board and share the same reference signal to prevent smearing. The form factor is VITA57 compliant and all of the DC power is routed from the data capture board through an FMC connector. This evaluation board demonstrates a high performance receiver signal chain aimed at military and commercial radar using "commercial off the shelf" (COTS) components. The overall circuit has a bandwidth of 220MHz with a pass band flatness of +/- 1.0 dB. The SNR and SFDR measured at an IF of 145MHz are 64dB and 75dBc, respectively.
- Military radar and communications
- Reduced Size Weight and Power (SWaP)
- Broadband instrumentation
- Portable instrumentation
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