Analog Devices Inc. HOS-050

Overview

HOS-050 from Analog Devices is a high-speed, fast-settling voltage-mode operational amplifier designed for precision video signal conditioning and D/A converter output amplification. It delivers 100 MHz gain bandwidth product, 80 ns settling time to 0.1%, and ±100 mA output drive into low-impedance loads - enabling use in CRT deflection, wideband current boosting, and video pulse amplification circuits.

For engineers reviewing the HOS-050 datasheet, HOS-050 pinout, HOS-050 application, or HOS-050 equivalent, key selection criteria include verified settling performance at 0.1% and 0.01% error bands, inverting/noninverting small-signal bandwidth trade-offs, offset adjust capability, thermal derating above −25°C, and TO-8 package layout constraints for stray capacitance control.

Technical Context

The HOS-050 employs feed-forward compensation optimized for inverting-mode operation, delivering 300 V/µs slew rate and 45 MHz small-signal bandwidth at A = −1 with 500 Ω feedback. Its differential input stage supports adjustable offset via dual pins (3 and 4), and its 7 µV/√Hz input noise (dc–2 MHz) enables low-distortion video amplification without added filtering.

Noninverting operation exhibits reduced bandwidth (e.g., 25 MHz at 5 V_p-p, 100 Ω load) due to channel mismatch between ac/dc paths, while harmonic distortion remains ≤−63 dB at 1 MHz (2 V_p-p). The device operates over −55°C to +125°C case temperature with ±15 V supply and requires external 10 kΩ potentiometer for zero-offset calibration.

Key Specifications

Pinout & Package

Package: TO-8 (H-12A) metal can, hermetically sealed, 12-pin, through-hole mount. Requires ground plane and local 0.1 µF ceramic + 3–10 µF tantalum decoupling at each supply pin.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-speed operational amplifier applications.

Compared with AD811ARZ and LM6172IMX, the HOS-050 uniquely combines ±100 mA output, dual offset-adjust pins, and 80 ns 0.1% settling in a hermetic TO-8 package - making it irreplaceable in military-grade CRT and broadcast video hardware where long-term calibration stability and ruggedness are mandatory.

Availability

HOS-050 is available at Aetrix Electronics and suitable for CRT deflection systems, broadcast video DAC interfaces, and high-reliability test equipment requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for HOS-050 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Analog Devices, Inc. is a U.S.-based semiconductor company specializing in high-performance analog, mixed-signal, and digital signal processing components for precision measurement and real-time control.

The HOS-050 belongs to Analog Devices' legacy FAST-SETTLING OP AMPS product line, engineered specifically for video signal chain integrity - emphasizing speed, drive strength, and calibration flexibility in mission-critical imaging and display systems.

FAQ

What is the maximum load capacitance the HOS-050 can drive while maintaining 80 ns settling to 0.1%?

The HOS-050 maintains 80 ns settling to 0.1% with a maximum load capacitance of 75 pF in inverting configuration (A = −1, R_FF = R_FB = 500 Ω). Exceeding this value increases ringing and extends linear settling time beyond specification. For capacitive loads >75 pF, external isolation resistors or feedback network compensation are required - documented in Figure 5 and Section "Settling Time Measurement" of the HOS-050 datasheet.

Does the HOS-050 support true differential input operation?

No, the HOS-050 is a single-ended input operational amplifier with separate inverting (pin 5) and noninverting (pin 6) inputs. While its design minimizes channel mismatch to improve noninverting-mode performance, it lacks fully balanced differential input architecture. True differential operation requires external resistor networks or dedicated differential amplifiers such as the AD8138 - the HOS-050 functions as a precision voltage-mode amplifier, not a differential receiver.

Can the HOS-050 be operated from a single +30 V supply instead of dual ±15 V rails?

No, the HOS-050 requires symmetrical dual supplies (e.g., ±15 V) per its absolute maximum ratings and AC/DC specifications. Operation from a single +30 V rail violates the ±18 V supply limit per rail and disrupts internal biasing - causing output saturation, increased offset drift, and potential damage. For single-supply video amplification, consider the AD8075 or ADA4870, which are explicitly rated for 5 V to 24 V single-rail operation.

How does the HOS-050's 100 mA output rating relate to thermal limits at elevated ambient temperatures?

The HOS-050's ±100 mA output is specified at +25°C case temperature. Above −25°C, power dissipation must be derated per Figure 2: at +85°C case temperature, maximum continuous output current drops to approximately ±65 mA to stay within the 1.25 W thermal limit. This derating is critical in enclosed CRT chassis or high-density video modules - sustained 100 mA loads above +85°C risk junction overheating and accelerated parametric drift.

Is the HOS-050 still in active production or considered obsolete?

The HOS-050 is marked "OBSOLETE" in the provided documentation, indicating Analog Devices no longer manufactures or supports this part. However, Aetrix Electronics maintains traceable, tested inventory of original-specification HOS-050 units for legacy system repair and long-lifecycle industrial deployments. No functional replacements with identical pinout, offset adjust, and TO-8 package are currently offered by Analog Devices - making genuine HOS-050 stock essential for sustaining existing hardware.