Texas Instruments OPA4830IPWR

Overview

OPA4830IPWR from Texas Instruments is a quad, low-power, single-supply, wideband voltage-feedback operational amplifier optimized for 3V/5V ADC input buffering and video line driving. It delivers 230MHz bandwidth at G=+1, 560V/μs slew rate, 9.2nV/√Hz input voltage noise, 4.4mA per channel quiescent current at 5V, and rail-to-rail output swing within 220mV of either supply into 150Ω.

For engineers reviewing the OPA4830IPWR datasheet, OPA4830IPWR pinout, OPA4830IPWR application, or OPA4830IPWR equivalent, key selection criteria include single-supply operation down to 3V, ground-inclusive input range, high-speed distortion performance (–58dBc 2nd-harmonic @ 5MHz), and TSSOP-14 package compatibility with space-constrained analog front-ends.

Technical Context

The OPA4830IPWR employs complementary common-emitter output stages enabling ±4.72V output swing on 5V supply into 150Ω while maintaining low differential gain/phase error-critical for consumer video line drivers. Its voltage-feedback architecture supports stable operation with gains ≥ +1 and exhibits peaking-limited frequency response (4dB max at G=+1).

Input stage design extends common-mode range to within 1.8V of V+, and below V−, supporting true single-supply DC-coupled interfacing to 3.3V ADCs like ADS5240. Thermal performance is characterized by RθJA = 109.6°C/W in the TSSOP-14 package, requiring attention to PCB copper area under the exposed pad for sustained 85°C operation.

Key Specifications

Pinout & Package

TSSOP-14 (PW) package: 5mm × 6.4mm body, 0.65mm pitch, thermally enhanced with exposed pad (not electrically connected). Pin 1 is Output A; pin 4 is +V; pin 11 is –V; pins 2/3/5/6/8/9/10/12/13 are dedicated inputs/outputs per channel.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar wideband op-amp applications.

Compared with OPA4830IPWR, OPA4820IPWR trades bandwidth for lower noise and higher DC precision, while LMH6629MA/NOPB prioritizes slew rate and RF linearity at the cost of power and package compatibility-neither offers pin-for-pin replacement.

Availability

OPA4830IPWR is available at Aetrix Electronics and suitable for high-speed data acquisition, consumer video equipment, medical imaging subsystems, and portable instrumentation requiring stable component supply across extended temperature ranges (–40°C to +85°C).

Supply support for OPA4830IPWR 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-performance op-amps and data converter interface solutions.

The OPA4830IPWR belongs to TI's high-speed voltage-feedback op-amp product line, engineered specifically for single-supply, wideband signal conditioning in ADC front-ends, video systems, and imaging chains.

FAQ

What supply voltage ranges does the OPA4830IPWR support?

The OPA4830IPWR operates from a single supply of 3V to 11V or dual supplies of ±1.5V to ±5.5V. At 5V single supply, it delivers 4.91V output swing high and 0.26V low into 150Ω. The input common-mode range extends to ground and within 1.8V of the positive rail, making it ideal for 3.3V and 5V systems. Full specifications are guaranteed across –40°C to +85°C ambient.

Can the OPA4830IPWR drive 75Ω video loads directly?

Yes, the OPA4830IPWR can drive 75Ω video loads directly. With ±80mA output current capability and rail-to-rail swing (within 220mV of either supply), it delivers >2VPP into 75Ω on a 5V supply-meeting SMPTE CVBS amplitude standards. Its low differential gain/phase error (<0.05%/0.05°) ensures minimal color fidelity loss, and the TSSOP-14 layout supports clean 75Ω trace routing without external buffers.

How does the OPA4830IPWR's distortion performance vary with output signal amplitude?

Unlike many op-amps, the OPA4830IPWR's harmonic distortion improves as output swing decreases: 2nd-harmonic distortion improves from –58dBc at 2VPP to –62dBc at 0.5VPP (5MHz, RL ≥ 500Ω). This behavior stems from its complementary output stage design and makes it especially effective in variable-gain or AGC circuits where small-signal fidelity is critical, such as CCD imaging channel amplifiers.

Is the OPA4830IPWR suitable for driving SAR or sigma-delta ADC inputs?

Yes, the OPA4830IPWR is well-suited for driving both SAR and sigma-delta ADC inputs. Its 230MHz bandwidth, 560V/μs slew rate, and 64ns 0.1% settling time (1V step, G=+2) meet timing requirements for 10+ MSPS SAR converters. For sigma-delta ADCs, its low 9.2nV/√Hz input voltage noise preserves ENOB in audio and precision measurement applications-verified in TI's SBOS350B datasheet Figure 6-34.

What thermal considerations apply to the OPA4830IPWR in TSSOP-14 package?

The OPA4830IPWR in TSSOP-14 has RθJA = 109.6°C/W. At maximum 20mA total quiescent current (5mA/ch) and 85°C ambient, junction temperature reaches ~103°C-within the 150°C absolute max. To ensure reliability, use ≥250mm² of 2-oz copper connected to the exposed pad (pin 0), minimize nearby heat sources, and verify PCB layout against TI's SBOS350B Section 8.3. No internal thermal shutdown is provided.