Overview
The AD8318ACPZ-R2, produced by Analog Devices Inc., is a demodulating logarithmic amplifier designed to accurately convert RF input signals into corresponding decibel-scaled output voltages. This device is part of the AD8318 family and is particularly suited for a wide range of RF and wireless applications. It operates over a broad frequency range from 1 MHz to 8 GHz, making it versatile for various communication systems and RF measurements.
Key Specifications
| Parameter | Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Frequency Range | 1 MHz | 8 GHz | |||
| Dynamic Range | TA = 25°C | 70 dB | |||
| Accuracy | f < 5.8 GHz | ±1.0 dB | |||
| Input Impedance | 119 Ω || 0.7 pF | ||||
| Maximum Input Level | ±1 dB error | -2 dBm | |||
| Minimum Input Level | ±1 dB error | -60 dBm | |||
| Slope | -24.3 mV/dB | ||||
| Intercept | 19.8 dBm | ||||
| Response Time (Rise/Fall) | 10 ns / 12 ns | ||||
| Supply Voltage | 5 V | ||||
| Current Consumption | 68 mA | ||||
| Power Consumption (Disabled) | <1.5 mW |
Key Features
- Wide bandwidth: 1 MHz to 8 GHz
- High accuracy: ±1.0 dB over 55 dB range (f < 5.8 GHz)
- Stability over temperature: ±0.5 dB
- Low noise measurement/controller output (VOUT)
- Pulse response time: 10 ns/12 ns (fall/rise)
- Integrated temperature sensor
- Small footprint LFCSP package
- Power-down feature: <1.5 mW at 5 V
- Single-supply operation: 5 V at 68 mA
- Fabricated using high-speed SiGe process
Applications
- RF transmitter PA setpoint control and level monitoring
- RSSI measurement in base stations, WLAN, WiMAX, and radars
Q & A
- What is the frequency range of the AD8318ACPZ-R2?
The AD8318ACPZ-R2 operates over a frequency range from 1 MHz to 8 GHz. - What is the dynamic range of the AD8318ACPZ-R2 at 25°C?
The dynamic range is typically 70 dB at 25°C. - How accurate is the AD8318ACPZ-R2 in terms of decibel-scaled output?
The device has an accuracy of ±1.0 dB over a 55 dB range for frequencies less than 5.8 GHz. - What is the response time of the AD8318ACPZ-R2?
The response time is 10 ns for fall and 12 ns for rise. - Does the AD8318ACPZ-R2 have an integrated temperature sensor?
Yes, it includes an integrated temperature sensor. - What is the power consumption when the device is disabled?
The power consumption is less than 1.5 mW when the device is disabled. - What is the typical current consumption of the AD8318ACPZ-R2?
The typical current consumption is 68 mA. - What is the supply voltage for the AD8318ACPZ-R2?
The supply voltage is 5 V. - In what package is the AD8318ACPZ-R2 available?
The device is available in a small footprint LFCSP package. - What are some common applications of the AD8318ACPZ-R2?
Common applications include RF transmitter PA setpoint control, level monitoring, and RSSI measurement in base stations, WLAN, WiMAX, and radars.
