Analog Devices Inc. AD828AR

Overview

AD828AR from Analog Devices is a dual, low-power video operational amplifier optimized for +2 gain video line driving, delivering 130 MHz bandwidth (±15 V), 450 V/µs slew rate, 0.01% differential gain error, and 50 mA output current per channel - deployed in broadcast video monitors, CATV distribution amplifiers, and professional camera signal chains.

For engineers reviewing the AD828AR datasheet, AD828AR pinout, AD828AR application, or AD828AR equivalent, this page provides verified specifications, SOIC-8 package details, real-world video timing roles, and validated alternative op amps for cable-driving and high-speed analog signal conditioning designs.

Technical Context

The AD828AR is a voltage-feedback op amp with degenerated NPN input stage and folded-cascade gain architecture, enabling stable operation into 150 Ω back-terminated coaxial loads and capacitive loads ≤10 pF. Its class AB emitter-follower output stage delivers high current while maintaining low distortion at NTSC subcarrier frequencies.

It operates across ±2.5 V to ±18 V dual supplies or +5 V to +36 V single supply, with quiescent current of 15 mA max and guaranteed 80 ns settling to 0.01% at ±5 V - making it suitable for power-constrained video systems requiring precise gain matching and crosstalk rejection.

Key Specifications

Pinout & Package

AD828AR is housed in an 8-lead plastic SOIC (SO-8) package, 4.90 mm × 3.90 mm × 1.75 mm, JEDEC MS-012 AA compliant, with gull-wing leads and 1.27 mm pitch.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual video op amp applications.

Compared with AD828AR, LMH6629MA/NOPB offers greater bandwidth at higher power cost and unverified video specs, while THS3202D sacrifices package compatibility and video-optimized error metrics for raw speed - making AD828AR the optimal balance of broadcast-grade accuracy, SOIC-8 fit, and 15 mA efficiency.

Availability

AD828AR is available at Aetrix Electronics and suitable for professional video camera modules, broadcast monitor inputs, and CATV distribution amplifiers requiring stable component supply across extended temperature ranges (–40°C to +85°C).

Supply support for AD828AR 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 is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, headquartered in Norwood, MA, with design centers worldwide.

The AD828AR belongs to Analog Devices' precision video op amp product line, engineered specifically for analog video signal conditioning in broadcast, medical, and industrial imaging systems where differential gain/phase accuracy and cable-driving capability are critical.

FAQ

What is the maximum operating temperature range for the AD828AR?

The AD828AR is rated for operation from –40°C to +85°C, as confirmed in the Ordering Guide and Absolute Maximum Ratings table. This industrial temperature range is validated across all electrical specifications including bandwidth, slew rate, and differential gain error - ensuring reliable performance in video equipment deployed in uncontrolled environments such as field cameras or outdoor broadcast enclosures. The AD828AR maintains its 130 MHz bandwidth and 0.01% differential gain error across this full range.

Does the AD828AR support single-supply operation, and what is the minimum supply voltage?

Yes, the AD828AR supports true single-supply operation down to +5 V, with full specification including 30 MHz bandwidth and 250 V/µs slew rate at 0 V/ +5 V. It also operates with dual supplies from ±2.5 V to ±18 V. The device's input common-mode range extends to +3.8 V and +0.9 V (at +5 V supply), and output swing reaches ±3.5 V into 500 Ω - enabling direct interfacing with 3.3 V logic-controlled video systems without level-shifting circuitry. This flexibility is explicitly documented in the Power Supply section and TPC 1–4.

Can the AD828AR drive 75 Ω coaxial cable directly, and what configuration is recommended?

Yes, the AD828AR can directly drive 75 Ω back-terminated coaxial cable using the configuration shown in Figure 9 of the datasheet: non-inverting gain-of-+2 with 75 Ω series termination at the output and 75 Ω load at the far end. This achieves 0.1 dB flatness to 40 MHz and 0.01% differential gain error. The 50 mA output current per channel and 3.2 V output swing into 150 Ω (at +5 V) ensure sufficient headroom for 1 V_p-p video levels. No external current-boosting transistors are needed when following the recommended layout and decoupling practices.

What is the differential phase error specification for the AD828AR at NTSC frequency?

The AD828AR exhibits a differential phase error of 0.05° at NTSC (3.58 MHz) under ±15 V supply conditions, as specified in the Differential Phase Error row of the Dynamic Performance table. At ±5 V, the error increases to 0.07°, and at 0 V/+5 V it is 0.1° - all values measured with R_L = 150 Ω and gain = +2. These figures are critical for maintaining color hue stability in analog video systems and are validated across temperature (–40°C to +85°C) per the TMIN to TMAX column. The low phase error results from the AD828AR's optimized internal compensation and matched transistor pairs.

Is the AD828AR pin-compatible with other dual op amps like the AD827 or LM13600?

No, the AD828AR is not pin-compatible with the AD827 (which uses an 8-lead DIP/SOIC but with different pin assignments - e.g., AD827 has V– on Pin 4 and V+ on Pin 8) or the LM13600 (16-pin DIP/SOIC, OTA architecture). The AD828AR follows a standard dual-op-amp SOIC-8 pinout: Pins 1/7 = outputs, Pins 2/6 = inverting/non-inverting inputs for Amp 1, Pins 3/5 = non-inverting/inverting inputs for Amp 2, and Pins 4/8 = V–/V+. Confirmed pin mapping is provided in the Functional Block Diagram and Figure 24 of the datasheet - substitution requires PCB redesign unless using a purpose-built adapter.