1 MHz至10 GHz的40 dB的对数检测器/控制器 1 MHz to 10 GHz, 40 dB Log Detector/Controller
Product Details
The AD8319 is a demodulating logarithmic amplifier, capable of accurately converting an RF input signal to a corresponding decibel-scaled output. It employs the progressive compression technique over a cascaded amplifier chain, each stage of which is equipped with a detector cell. The device can be used in either measurement or controller modes. The AD8319 maintains accurate log conformance for signals of 1 MHz to 8 GHz and provides useful operation to 10 GHz. The input dynamic range is typically 40 dB re: 50 Ω with error less than ±1 dB. The AD8319 has 8 ns/10 ns response time fall time/rise time that enables RF burst detection to a pulse rate of beyond 50 MHz. The device provides unprecedented logarithmic intercept stability vs. ambient temperature conditions. A supply of 3.0 V to 5.5 V is required to power the device. Current consumption is typically 22 mA, and it decreases to 200 μA when the device is disabled.
The AD8319 can be configured to provide a control voltage to a power amplifier or a measurement output from the VOUT pin. Because the output can be used for controller applications, special attention was paid to minimize wideband noise. In this mode, the setpoint control voltage is applied to the VSET pin.
The feedback loop through an RF amplifier is closed via VOUT, the output of which regulates the amplifier’s output to a magnitude corresponding to VSET. The AD8319 provides 0 V to V_POS_ − 0.1 V output capability at the VOUT pin, suitable for controller applications. As a measurement device, VOUT is externally connected to VSET to produce an output voltage, VOUT, that is a decreasing linear-in-dB function of the RF input signal amplitude.
The logarithmic slope is −22 mV/dB, determined by the VSET interface. The intercept is 15 dBm re: 50 Ω, CW input using the INHI input. These parameters are very stable against supply and temperature variations.
The AD8319 is fabricated on a SiGe bipolar IC process and is available in a 2 mm × 3 mm, 8-lead LFCSP_VD for an operating temperature range of −40°C to +85°C.
**Applications**
* RF transmitter PA setpoint controls and level monitoring
* Power monitoring in radiolink transmitters
* RSSI measurement in base stations, WLANs, WiMAX, and radars
### Features and Benefits
电源电压DC 5.50V max
输出电流 10 mA
供电电流 22.0 mA
耗散功率 730 mW
热阻 55 ℃/W
输入功率Max 12 dBm
工作温度Max 85 ℃
工作温度Min -40 ℃
耗散功率Max 730 mW
精度 ±1 dB
安装方式 Surface Mount
引脚数 8
封装 LFCSP
长度 3.00 mm
宽度 2.00 mm
高度 0.83 mm
封装 LFCSP
产品生命周期 Active
包装方式 Tray
制造应用 Aerospace and Defense, Radar
RoHS标准 RoHS Compliant
含铅标准 Contains Lead
ECCN代码 EAR99
型号/品牌 | 代替类型 | 替代型号对比 |
---|---|---|
AD8319ACPZ-WP ADI 亚德诺 | 当前型号 | 当前型号 |
AD8319ACPZ-R7 亚德诺 | 类似代替 | AD8319ACPZ-WP和AD8319ACPZ-R7的区别 |
AD8319ACPZ-R2 亚德诺 | 类似代替 | AD8319ACPZ-WP和AD8319ACPZ-R2的区别 |