Semiconductors - ICs

> Amplifiers & Comparators

> Logarithmic Amplifiers

distributor space
Organise Price Comparison Results by
Distributor Statistics for AD8309ARUZ
Total in Stock: -in-stock
Lowest MOQ: -
Lowest price for your selection
in Stock
Average Price: - per unit
Stocking Distributors: -
Price Comparison for AD8309ARUZ
Series Information for AD8309ARUZ - Analog Devices


  • feature
    Complete Multistage Log-Limiting IF Amplifier 100 dB Dynamic Range: u201378 dBm to +22 dBm (Re 50 u2340) Stable RSSI Scaling Over Temperature and Supplies: 20 mV/dB Slope, u201395 dBm Intercept u2d1e0.4 dB RSSI Linearity up to 200 MHz Programmable Limiter Gain and Output Current Differential Outputs to 10 mA, 2.4 V p-p Overall Gain 100 dB, Bandwidth 500 MHz Constant Phase (Typical u2d1e80 ps Delay Skew) Single Supply of +2.7 V to +6.5 V at 16 mA Typical Fully Differential Inputs, RIN = 1 ku2340, CIN = 2.5 pF 500 ns Power-Up Time, <1 u242eA Sleep Current



The AD8309 is a complete IF limiting amplifier, providing both an accurate logarithmic (decibel) measure of the input signal (the RSSI function) over a dynamic range of 100 dB, and a programmable limiter output, useful from 5 MHz to 500 MHz. It is easy to use, requiring few external components. A single supply voltage of +2.7 V to +6.5 V at 16 mA is needed, corre- sponding to a power consumption of under 50 mW at 3 V, plus the limiter bias current, determined by the application and typically 2 mA, providing a limiter gain of 100 dB when using 200 Ω loads. A CMOS-compatible control interface can enable the AD8309 within about 500 ns and disable it to a standby current of under 1 µA. The six cascaded amplifier/limiter cells in the main path have a small signal gain of 12.04 dB (×4), with a –3 dB bandwidth of 850 MHz, providing a total gain of 72 dB. The programmable output stage provides a further 18 dB of gain. The input is fully differential and presents a moderately high impedance (1 kΩ in parallel with 2.5 pF). The input-referred noise-spectral-density, when driven from a terminated 50 Ω, source is 1.28 nV/√Hz, equivalent to a noise figure of 3 dB. The sensitivity of the AD8309 can be raised by using an input matching network. Each of the main gain cells includes a full-wave detector. An additional four detectors, driven by a broadband attenuator, are used to extend the top end of the dynamic range by over 48 dB. The overall dynamic range for this combination extends from –91 dBV (–78 dBm at the 50 Ω level) to a maximum permissible value of +9 dBV, using a balanced drive of antiphase inputs each of 2 V in amplitude, which would correspond to a sine wave power of +22 dBm if the differential input were terminated in 50 Ω. The slope of the RSSI output is closely controlled to 20 mV/dB, while the intercept is set to –108 dBV (–95 dBm re 50 Ω). These scaling parameters are determined by a band- gap voltage reference and are substantially independent of tem- perature and supply. The logarithmic law conformance is typically within ±0.4 dB over the central 80 dB of this range at any fre- quency between 10 MHz and 200 MHz, and is degraded only slightly at 500 MHz. The RSSI response time is nominally 67 ns (10%–90%). The averaging time may be increased without limit by the addition of an external capacitor. The full output of 2.34 V at the maximum input of +9 dBV can drive any resistive load down to 50 Ω and this interface remains stable with any value of capacitance on the output. The AD8309 is fabricated on an advanced complementary bipolar process using silicon-on-insulator isolation techniques and is available in the industrial temperature range of –40°C to +85°C, in a 16-lead TSSOP package.


No. of Amplifiers:
1 Amplifier, 1Amplifiers
Dynamic Range:
100 dB
Scale Factor:
Response Time:
Amplifier Case Style:
No. of Pins:
Supply Voltage Range:
2.7V to 6.5V
Input Offset Voltage:
Operating Temperature Min:
Operating Temperature Max:
Product Range:
AD8309 Series
RoHS Phthalates Compliant:
MSL 1 - Unlimited
No SVHC (07-Jul-2017)
Amplifer Supply Voltage:
2.7V to 6.5V
Dynamic Range Decades:
Operating Temperature Range:
-40°C to +85°C
Scale Factor V / Decade:
Supply Current:

Alternate Descriptions

RS Components
Newark Electronics
IC, LOGARITHM,AMP,100DB,16-TSSOP; No. of Amplifiers:1 Amplifier; Dynamic Range:100 dB; Scale Factor:-; Response Time:67ns; Amplifier Case Style:TSSOP; No. of Pins:16Pins; Supply Voltage Range:2.7V to 6.5V; Input Offset Voltage:-; RoHS Compliant: Yes
Richardson RFPD
RS Components UK
RS Components DE
Operationsverstärker AD8309ARUZ, 3 V, 5 V Rail-to-Rail Output Differential TSSOP, 16-Pin Stromversorgungs-Typ : Single Eingangswiderstand max. : 0.001MΩ Montage-Typ : SMD Abmessungen : 5 x 4.4 x 1 mm, 5 x 4.4 x 1.05 mm Höhe : 1.05mm Betriebstemperatur max. : +85 °C Betriebstemperatur min. : –40 °C Breite : 4.4mm, Analog Devices
RS Components HK
RS Components JP
RS Components FR
RS Components CN
RS Components ES
RS Components NL
RS Components NO
RS Components US
RS Components SG
RS Components TW