Part Number : AD8318

Function : 1 MHz to 8 GHz, 70 dB, Logarithmic Detector/Controller

Package : Small footprint LFCSP 16 Pin Type

Maker : Analog Devices

Pinouts :
AD8318 datasheet

Description :

The AD8318 is a demodulating logarithmic amplifier, capableof accurately converting an RF input signal to a correspondingdecibel-scaled output voltage. It employs the progressive compression technique over a cascaded amplifier chain, each stage of which is equipped with a detector cell. The device is used in measurement or controller mode. The features maintains accurate log conformance for signals of 1 MHz to 6 GHz and provides useful operation to 8 GHz. The input range is typically 60 dB (re: 50 Ω) with error less than ±1 dB. The AD8318 has a 10 ns response time that enables RF burst detection to beyond 45 MHz. The device provides unprece dented logarithmic intercept stability vs. ambient temperature conditions. A 2 mV/°C slope temperature sensor output is also provided for additional system monitoring. A single supply of 5 V is required. Current consumption is typically 68 mA. Power consumption decreases to <1.5 mW when the device is disabled.


1. Wide bandwidth: 1 MHz to 8 GHz
2. High accuracy: ±1.0 dB over 55 dB range (f < 5.8 GHz)
3. Stability over temperature: ±0.5 dB
4. Low noise measurement/controller output (VOUT)
5. Pulse response time: 10 ns/12 ns (fall/rise)
6. Integrated temperature sensor
7. Power-down feature: <1.5 mW at 5 V
8. Single-supply operation: 5 V @ 68 mA
9. Fabricated using high speed SiGe process

Applications : 

1. RF transmitter PA setpoint control and level monitoring
2. RSSI measurement in base stations, WLAN, WiMAX, and radars

Datasheet PDF Download :
AD8318 pdf

Others datasheet of same file :

AD-8318, AD8318-EVALZ, AD8318ACPZ-R2,


2021/03/27 13:52 2021/03/27 13:52