Image is for your reference only,please check specifications for details
Updated at 17/06/2025 10:30:15(UTC+8)
Certifications
ManyChip is committed to product quality and safety with ISO 9001, ISO 13485, ISO 45001, UL, RoHS, CQC and REACH certifications.
Description
- Product Details
- The AD8318 is a demodulating logarithmic amplifier, capable of accurately converting an RF input signal to a corresponding decibel-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 AD8318 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 unprecedented 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.
- The AD8318 can be configured to provide a control voltage to a VGA, such as a power amplifier or a measurement output, from Pin VOUT. Because the output can be used for controller applications, wideband noise is minimal.
- In this mode, the setpoint control voltage is applied to VSET. The feedback loop through an RF amplifier is closed via VOUT, the output of which regulates the amplifier output to a magnitude corresponding to VSET. The AD8318 provides 0 V to 4.9 V output capability at the VOUT pin, suitable for controller applications. As a measurement device, Pin VOUT is externally connected to VSET to produce an output voltage, VOUT, which is a decreasing linear-in-dB function of the RF input signal amplitude.
- The logarithmic slope is nominally −25 mV/dB but can be adjusted by scaling the feedback voltage from VOUT to the VSET interface. The intercept is 20 dBm (re: 50 Ω, CW input) using the INHI input. These parameters are very stable against supply and temperature variations.
- The AD8318 is fabricated on a SiGe bipolar IC process and is available in a 4 mm × 4 mm, 16-lead LFCSP for the operating temperature range of –40°C to +85°C.
- **Applications**
- RF transmitter PA setpoint control and level monitoring
- RSSI measurement in base stations, WLAN, WiMAX, and radars
- ### Features and Benefits
- 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
- Power-down feature: <1.5 mW at 5 V
- Single-supply operation: 5 V @ 68 mA
- Fabricated using high speed SiGe process
- **AD8138-EP supports defense and aerospace applications (AQEC standard)**
- Download AD8318-EP data sheet (pdf)
- V62/12665 DSCC Drawing Number
AD8318 Specifications
| Attribute | Attribute Value |
|---|---|
| Datasheet | Datasheet |
| 3D Model | 3D Model |
| Show | |
| Product Lifecycle Status | Recommended for New Designs |
| RoHS | RoHS Compliant |
Order guide
-
TT in advance (bank transfer), Western Union, Credit card,
PayPal. Customer is responsible for shipping fee, bank
charges, duties and taxes.
-
- You can choose whether shipping charges will be charged through your shipping account or by us.
- Please confirm with the logistics company in advance for remote areas.
(Additional charges ($35-$50) may apply for delivery in these areas)
- Delivery date: usually 2 to 7 working days.
- A tracking number will be sent after your order ships.
- - Carefully inspected and packed by ManyChip warehouse - Vacuum packaging - Anti-static packaging - Shockproof foam
- The terms here are for reference only, the actual terms are subject to the sales quotation. - Please confirm product specifications when ordering. - MOQ refers to the minimum order quantity required to purchase each part. - If you have special ordering instructions, please indicate them on the ordering page. - Inspection (PSI) will be performed prior to shipment.
- - Income Quality Control (IQC), 1000+ qualified dealers. - Chips are tested by authoritative organizations to ensure the quality, authenticity and safety of your device. - Decapsulation control - X-ray control - XRF inspection - Electrical testing - Surface testing -Digital components warehouse, covering an area of 800 square meters, with constant temperature and humidity
Contact Us
If you have any problem,please email to sales@manychip.com, we will response as soon as possisble.
Popular Search Parts
- Recommended Parts
- Hot Parts
- Popular Parts
- Recently Popular Parts
- MC78M05CDTRK SMMBT5401LT1G 10M04DCF256I7G SN74LVC1G74DQER TCA9548ARGERQ1 TPS7A8500RGRT PTN5150AHXMP NRVTSA4100ET3G SN74LV1T34DCKR LM5143QRWGRQ1
- ATV12H055M2 ICE3BR1765J FSBB30CH60C DCA1000EVM IRL40SC209 LIS2DW12TR MBRA340T3G MBR0540T1G SN754410NE 2N7002LT1G
- LM5576 VO3120 MCP3204 MJE13003 SN74LVC2G07DCKR IRFP4468PBF FDS6675BZ L6234D FT232RL 2N2907A
- RK7002AT116 MJF127 2N5655 66200821122 BCP53T1 Q8008L5 FX0321 B3F1000 1751303 ATJTAGICE2
SN:H1.05271LO4634V47Q0QC0S0
Buy AD8318
Please fill the information below to send RFQ quickly,and we will respond immediately.