ADL5519-EVALZ:  对数放大器和检测器

The ADL5519 is a dual-demodulating logarithmic amplifier that incorporates two AD8317s. It can accurately convert an RF input signal into a corresponding decibel-scaled output. The ADL5519 provides accurately scaled, independent, logarithmic output voltages for both RF measurement channels. The device has two additional output ports, OUTP and OUTN, that provide the measured differences between the OUTA and OUTB channels. The on-chip channel matching makes the log amp outputs insensitive to temperature and process variations.

The temperature sensor pin provides a scaled voltage that is proportional to the temperature over the operating temperature range of the device.

The ADL5519 maintains accurate log conformance for signals from 1 MHz to 8 GHz and provides useful operation to 10 GHz. The ±3 dB dynamic range is typically 62 dB and has a ±1 dB dynamic range of >50 dB (re: 50 Ω). The ADL5519 has a response time of 6 ns/8 ns (fall time/rise time) that enables RF burst detection to a pulse rate of greater than 50 MHz. The device provides unprecedented logarithmic intercept stability vs. ambient temperature conditions. A supply of 3.3 V to 5.5 V is required to power the device. Current consumption is typically 60 mA, and it decreases to less than 1 mA when the device is disabled.

The device is capable of supplying four log amp measurements simultaneously. Linear-in-dB measurements are provided at OUTA and OUTB with conveniently scaled slopes of −22 mV/dB. The log amp difference between OUTA and OUTB is available as differential or single-ended signals at OUTP and OUTN. An optional voltage applied to VLVL provides a common-mode reference level to offset OUTP and OUTN above ground. The broadband output pins can support many system solutions.

Any of the ADL5519 output pins can be configured to provide a control voltage to a variable gain amplifier (VGA). Special attention has been paid to minimize the broadband noise of the output pins so that they can be used for controller applications.

The ADL5519 is fabricated on a SiGe bipolar IC process and is available in a 5 mm × 5 mm, 32-lead LFCSP with an operating temperature range of −40°C to +125°C.

产品应用领域 Applications
ADL5519-EVALZ 特点
ADL5519-EVALZ 功能框图

AD8311 功能框图

芯片引脚定义图

ADL5519-EVALZ 技术指标
RF Frequency (MHz) 1 kHz to 10000 Response Time (ns typ) 6ns
Dynamic Range (dB) 62dB Voltage Supply (V) 3 to 5.5
Temp Stability (dB) ±0.5dB Supply Current 56mA
Package 32-Lead LFCSP
ADL5519 订购指南
产品型号 产品状态 封装 引脚 温度范围
ADL5519-EVALZ 量产 评估板 24 汽车级
ADL5519ACPZ-R2 量产 32 ld LFCSP (5x5x.85mm) w/2.7exposed pad 32 汽车级
ADL5519ACPZ-R7 量产 32 ld LFCSP (5x5x.85mm) w/2.7exposed pad 32 汽车级
ADL5519ACPZ-WP 量产 32 ld LFCSP (5x5x.85mm) w/2.7exposed pad 32 汽车级
ADL5519-EVALZ 应用技术支持与电子电路设计开发资源下载
  1. 对数放大器和检测器系列ADL5519 数据手册DataSheet 下载 . pdf
  2. ADI 模拟器件公司比较器产品选型指南 . pdf
  3. Analog Devices, Inc. 美国模拟器件公司产品订购手册 .pdf