Texas Instruments OPA2832IDGKR

Overview

OPA2832IDGKR from Texas Instruments is a dual, low-power, high-speed, fixed-gain operational amplifier optimized for single-supply video line driving and CCD imaging channels. It delivers 75MHz bandwidth (G = +2), 350V/µs slew rate, and 4.9VPP output swing on +5V supply with rail-to-rail output swing to within 30mV of ground and 60mV of V_S.

For engineers reviewing the OPA2832IDGKR datasheet, OPA2832IDGKR pinout, OPA2832IDGKR application, or OPA2832IDGKR equivalent, key selection criteria include its fixed +2 gain architecture, ±75mA output drive capability at +5V, NTSC-compliant differential gain (0.11%) and phase (0.14°), and MSOP-8 thermal resistance (150°C/W).

Technical Context

The OPA2832IDGKR integrates two identical fixed-gain amplifiers with internal 400Ω feedback and gain-setting resistors, eliminating external components for G = +2 operation. Its complementary common-emitter output stage enables true rail-to-rail output swing while maintaining low distortion across wide signal swings.

Designed for single-supply systems, it supports input voltage range extending below ground (–0.5V) and up to 3.0V on +5V supply, with input-referred PSRR of 66dB and CMRR > 60dB up to 100kHz - critical for noise-sensitive analog front-ends in portable consumer electronics and ultrasound systems.

Key Specifications

Pinout & Package

OPA2832IDGKR is housed in an 8-pin MSOP package (DGK), measuring 3.0mm × 3.0mm × 1.0mm with 0.65mm pitch, optimized for space-constrained portable designs.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar fixed-gain operational amplifier applications.

Compared with OPA2832IDGKR, OPA2830IDGKR offers gain configurability at the cost of added components and 35% higher quiescent current, while LMH6629MA/NOPB delivers extreme speed but demands full external design effort and doubles power consumption - making OPA2832IDGKR optimal for cost-sensitive, space-limited, single-supply video and imaging systems.

Availability

OPA2832IDGKR is available at Aetrix Electronics and suitable for video line drivers, CCD imaging channels, and low-power ultrasound systems requiring stable component supply, consistent parametric performance across temperature, and long-term production continuity.

Supply support for OPA2832IDGKR 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

Texas Instruments is a global semiconductor leader specializing in analog and embedded processing technologies, with decades of expertise in high-speed op-amps and precision signal chain solutions.

The OPA2832 product line targets single-supply, low-power, high-fidelity analog signal conditioning - specifically engineered for portable video, medical imaging, and consumer electronics where rail-to-rail output, low distortion, and minimal external components are essential.

FAQ

What is the maximum output current capability of the OPA2832IDGKR?

The OPA2832IDGKR provides ±75mA continuous output current per channel into 150Ω loads on a +5V supply, with short-circuit output current rated at 100mA. This enables direct driving of multiple 75Ω video lines or parallel-connected transducers without external boost circuitry - a key design advantage confirmed in TI's SBOS327C datasheet Figure 12 and Electrical Characteristics table.

Does the OPA2832IDGKR support true single-supply operation with input signals near ground?

Yes, the OPA2832IDGKR supports input voltages down to –0.5V on a +5V supply, allowing ground-referenced AC-coupled or DC-coupled inputs. Its input common-mode range extends below ground and up to 3.0V, verified across temperature in the +5V Electrical Characteristics table (page 5), making it suitable for interfacing with sensors and DACs in single-supply systems.

What is the small-signal bandwidth of the OPA2832IDGKR at G = +2 and +3.3V supply?

At +3.3V supply and G = +2, the OPA2832IDGKR delivers a minimum small-signal bandwidth of 59MHz (–3dB point) with VO ≤ 0.5VPP into 150Ω, as specified in the "ELECTRICAL CHARACTERISTICS: VS = +3.3V" table (page 7). This ensures robust performance in battery-powered portable devices operating from Li-ion or regulated 3.3V rails.

How does the OPA2832IDGKR achieve NTSC-compliant video performance?

The OPA2832IDGKR achieves NTSC compliance through optimized internal transistor matching and low-phase-shift topology, delivering 0.11% differential gain error and 0.14° differential phase error into 150Ω loads at 3.58MHz, as measured per standard NTSC test conditions in the datasheet (page 5, "NTSC Differential Gain/Phase" row). These values meet broadcast-grade analog video specifications without external calibration.

Is the OPA2832IDGKR pin-compatible with other members of the OPA283x family?

No - the OPA2832IDGKR (MSOP-8, DGK) is not pin-compatible with SO-8 variants like OPA2832ID. While both share identical electrical functionality and pin functions, the MSOP-8 package has different pad layout, thermal pad configuration, and mechanical dimensions. PCB layout must be redesigned when migrating between D (SO-8) and DGK (MSOP-8) packages, as confirmed in the Ordering Information table (page 2).