AD8367S Analog Devices Integrated Circuit (Small Outline Packages) In Stock
The AD8367S is a 500 MHz variable-gain amplifier (VGA) with a 45 dB linear-in-dB gain control range and an integrated square-law detector for RSSI output. It operates from a single 2.7 V to 5.5 V supply with a 50 Ω matched input. Available from Analog Devices in a small-outline package, in stock with worldwide shipping.
- Manufacturer
- Analog Devices
- Package
- Small Outline Packages
- Pin Count
- 14
- Lifecycle
- ACTIVE
- Datasheet
- AD8367S Datasheet PDF
- Category
- Integrated Circuit
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 45 dB linear-in-dB gain range from -2.5 dB to +42.5 dB controlled by a 0 V to 1 V voltage, enabling precise AGC loop design up to 500 MHz
- Integrated square-law RSSI detector provides a DC voltage proportional to input power, eliminating a separate power-detection IC in IF strip and AGC receiver designs
- Operates from a single 2.7 V to 5.5 V supply with 50 Ω input impedance, simplifying integration into direct-conversion and IF receiver signal chains
Applications
The AD8367S is primarily used in automatic gain control (AGC) loops for cellular base-station receivers, cable-TV IF strips, and wireless LAN front ends that must maintain constant output amplitude as input signal strength varies by 45 dB. Its integrated RSSI output feeds directly into a DAC or ADC to close the AGC loop digitally, reducing component count in software-defined radio (SDR) and direct-conversion receiver designs. The 500 MHz bandwidth also covers IF frequencies in 2G/3G radio modules, digital broadcast receivers, and radar front-end signal-conditioning chains.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What gain range and control law does the AD8367S offer for an AGC receiver design at 70 MHz IF?
The AD8367S provides a 45 dB gain range from -2.5 dB to +42.5 dB with a linear-in-dB transfer function of 45 dB/V over a 0 V to 1 V control voltage, making the AGC loop gain-independent and allowing a simple linear DAC or integrator to control signal level precisely at a 70 MHz IF without gain-law compensation.
How does the integrated RSSI detector in the AD8367S simplify an automatic gain control loop?
The on-chip square-law detector provides a DC output voltage proportional to the input power level, eliminating the need for a discrete detector diode, RF choke, and filter capacitor. In a closed-loop AGC circuit, the RSSI output can drive an op amp integrator directly to control the gain-control pin, reducing the external component count by 3 to 5 parts.
Up to what frequency does the AD8367S operate, and how does that compare with common cellular and WLAN IF bands?
The AD8367S operates with full gain range up to 500 MHz, covering the 70 MHz and 140 MHz IF bands used in 2G/3G base stations, the 240 MHz IF in cable TV systems, and approaching the 450 MHz band used in certain WLAN and digital broadcast IF chains—making it a single-part solution across multiple RF receiver architectures.
What supply voltage does the AD8367S require, and is it compatible with 3.3 V digital SoC designs?
The AD8367S operates from a single supply of 2.7 V to 5.5 V, which includes the 3.3 V rail common in digital SoCs and FPGAs. This allows the device to share the 3.3 V system supply without a dedicated regulator, simplifying power-supply architecture in compact SDR and IoT RF module designs.
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About Analog Devices
Analog Devices (ADI) is a global leader in high-performance analog, mixed-signal, and digital signal processing integrated circuits used in virtually all types of electronic equipment.
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