Analog Devices Inc. AD830AR-REEL

Overview

AD830AR-REEL from Analog Devices is a high-speed, wideband difference amplifier optimized for video and precision differential signal conditioning. It delivers 85 MHz unity-gain bandwidth, ±2 V differential input range, 60 dB CMRR at 4 MHz, and 0.06% differential gain error - enabling accurate analog signal reconstruction in broadcast video receivers and high-fidelity ADC front-ends.

For engineers reviewing the AD830AR-REEL datasheet, AD830AR-REEL pinout, AD830AR-REEL application, or AD830AR-REEL equivalent, key selection criteria include common-mode voltage range (−12 V to +12.8 V), symmetrical dynamic response, ±50 mA output drive, low distortion (−72 dB THD @ 4 MHz), and SOIC-8 packaging with no internal connections on pins 3 and 7.

Technical Context

The AD830AR-REEL implements an active feedback topology with dual matched transconductance (GM) stages, enabling true differential amplification without external resistors. Its open-loop behavior is defined by GM × RP gain and GM/CC unity-gain frequency, delivering symmetrical bandwidth and settling time for both inverting and noninverting configurations.

This architecture eliminates traditional op-amp-based difference amplifier limitations: it achieves 90 dB DC CMRR without resistor matching, maintains 35 ns 0.1% settling across ±5 V and ±15 V supplies, and sustains 15 MHz 0.1 dB gain flatness while rejecting common-mode signals up to 4 MHz with minimal degradation.

Key Specifications

Pinout & Package

AD830AR-REEL is housed in an 8-lead SOIC (RN) package with standard JEDEC MS-012AC dimensions (4.9 mm × 3.9 mm × 1.75 mm). Pins 3 and 7 are internally unconnected (NC); all other pins are electrically active per the functional diagram.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar difference amplifier applications.

Compared with THS4131CD and INA134UA, the AD830AR-REEL uniquely balances video-grade AC performance (0.06% gain error, 15 MHz flatness) with flexible DC-coupled operation (±12.8 V CM range) and resistorless configuration - making it the only option qualified for broadcast video line receivers and high-dynamic-range ADC drivers without external component trade-offs.

Availability

AD830AR-REEL is available at Aetrix Electronics and suitable for broadcast video infrastructure, industrial data acquisition, and medical imaging systems requiring stable component supply, long-term lifecycle support, and traceable sourcing.

Supply support for AD830AR-REEL 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 global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, headquartered in Wilmington, MA.

The AD830 belongs to Analog Devices' precision high-speed amplifier product line, engineered specifically for differential signal conditioning in video, instrumentation, and communications systems where common-mode rejection and gain accuracy are critical.

FAQ

What is the maximum common-mode voltage range supported by the AD830AR-REEL?

The AD830AR-REEL supports a common-mode voltage range of −12.0 V to +12.8 V when operated with ±15 V supplies and a ±1 V differential input. This wide range enables direct interfacing with high-voltage industrial sensors and legacy video sources without level-shifting circuitry. The range scales with supply voltage: at ±5 V supplies, it is −2.0 V to +2.9 V. These values are specified in Table 1 and Figure 29 of the AD830 datasheet Rev. D.

Does the AD830AR-REEL require external resistors to configure unity gain?

No, the AD830AR-REEL operates as a resistorless difference amplifier in unity-gain mode. Pins 1 (X1) and 2 (X2) accept the differential input, while the output appears at Pin 6 (OUT) referenced to Pin 8 (VN). This configuration leverages the internal transconductance (GM) topology to achieve precise G = +1 or G = −1 without external components - a key advantage over op-amp-based difference amplifiers. The AD830AR-REEL datasheet Figure 21(a) confirms this connection.

Can the AD830AR-REEL drive a 150 Ω video load directly?

Yes, the AD830AR-REEL is specified to deliver ±50 mA output current into 150 Ω loads, supporting standard 75 Ω video termination with proper source/load matching. At ±15 V supplies, it provides ±12 V output swing into ≥1 kΩ and ±3.5 V into 150 Ω (Table 2). Its 360 V/μs slew rate and 15 MHz 0.1 dB bandwidth ensure minimal distortion on fast video transitions. This capability is validated in Figures 19–22 and Table 1 of the AD830AR-REEL datasheet.

What is the purpose of Pins 3 and 7 on the AD830AR-REEL?

Pins 3 (C) and 7 (NC) on the AD830AR-REEL are internally unconnected (NC). Pin 3 serves as a dedicated ground reference for the X GM stage but is not bonded to die substrate; it must be connected to a low-impedance analog ground plane. Pin 7 has no internal connection and must remain floating - neither pin may be tied to supply rails, signals, or bypass capacitors. This NC designation is explicitly stated in the "CONNECTION DIAGRAM" section of the AD830AR-REEL datasheet Rev. D.

How does the AD830AR-REEL achieve high CMRR without precision external resistors?

The AD830AR-REEL achieves 90 dB DC CMRR and 60 dB at 4 MHz through its monolithic active feedback topology with matched transconductance (GM) stages - eliminating reliance on external resistor matching. Unlike conventional op-amp difference amplifiers, its internal X and Y GM cells are fabricated on the same die with inherent tracking, ensuring identical gain and phase response. This design removes the primary source of CMRR degradation in discrete solutions, as confirmed in the "AD830 FOR DIFFERENTIAL AMPLIFICATION" and "ADVANTAGEOUS PROPERTIES" sections of the AD830AR-REEL datasheet.