Texas Instruments OPA2130UAG4

Overview

OPA2130UAG4 from Texas Instruments is a dual, precision FET-input operational amplifier optimized for low-power, high-impedance signal conditioning in battery-powered and portable instrumentation. It delivers 1 MHz gain-bandwidth, 530 µA/amp quiescent current, ±1 mV max input offset voltage, and 90 dB min CMRR across –40°C to +85°C - enabling accurate sensor interfacing in handheld medical devices and data acquisition systems.

For engineers reviewing the OPA2130UAG4 datasheet, OPA2130UAG4 pinout, OPA2130UAG4 application, or OPA2130UAG4 equivalent, key selection criteria include its FET-input bias current (≤20 pA), unity-gain stability with ≥10 nF capacitive load drive, and independence between channels for low crosstalk in dual-channel analog front-ends.

Technical Context

The OPA2130UAG4 employs a cascoded FET input stage that maintains ultra-low input bias current (<20 pA) over its full common-mode range (±13 V), eliminating phase reversal under overvoltage conditions - a critical reliability feature absent in many legacy FET op amps. Its internal compensation ensures unity-gain stability without external components.

Each amplifier operates independently within the SOIC-8 package, with no shared substrate or bias networks; this architecture achieves <0.3 µV/V channel separation and prevents interaction during overload or short-circuit events on one channel.

Key Specifications

Pinout & Package

OPA2130UAG4 is housed in an industry-standard SOIC-8 (D) package, 3.91 mm × 4.90 mm × 1.75 mm, RoHS-compliant with NiPdAu lead finish and JEDEC MSL Level-3 rating.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar precision FET-input op amp applications.

Compared with OPA2130UAG4, OPA2132UA trades 2.5× higher quiescent current for 4× bandwidth and 20× lower input bias current, while ADA4625-2 doubles noise performance and slew rate at 3.4× the power - making OPA2130UAG4 the optimal balance for precision, low-power, dual-channel signal conditioning.

Availability

OPA2130UAG4 is available at Aetrix Electronics and suitable for portable medical devices, battery-powered data loggers, and high-impedance sensor interfaces requiring stable component supply across extended production lifecycles.

Supply support for OPA2130UAG4 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 heritage in precision op amp design and manufacturing excellence.

The OPA2130UAG4 belongs to TI's OPA130 family of low-power FET-input op amps, engineered specifically for portable, battery-operated instrumentation where precision, low IQ, and input-stage robustness are co-primary requirements.

FAQ

What is the maximum capacitive load the OPA2130UAG4 can drive while remaining stable?

The OPA2130UAG4 is specified for stable operation with capacitive loads up to 10 nF without external compensation. This capability enables direct connection to typical ADC input capacitances (e.g., 10–20 pF) and long PCB traces without series isolation resistors. Stability is maintained across the full operating temperature range (–40°C to +85°C) and supply voltages (±2.25 V to ±18 V), as verified in the SBOS053A datasheet Figure 13 and Table 1.

Does the OPA2130UAG4 require external offset trim connections?

No, the OPA2130UAG4 does not provide offset trim pins - unlike the single-channel OPA130, which includes dedicated offset adjust terminals (pins 1 and 5). The OPA2130UAG4 uses laser trimming to achieve ±1 mV max input offset voltage, eliminating the need for user adjustment. This simplifies PCB layout and improves long-term drift stability compared to manually trimmed solutions.

How does the OPA2130UAG4 prevent phase reversal in overvoltage conditions?

The OPA2130UAG4 incorporates input cascode circuitry that maintains stable biasing of the FET input stage across its full common-mode voltage range (±13 V), preventing the input stage from saturating and causing output polarity inversion. This eliminates a known failure mode in conventional FET op amps - especially critical in voltage-follower configurations used with high-impedance sensors where input overvoltage may occur during power-up or transient events.

Is the OPA2130UAG4 pin-compatible with other dual op amps in SOIC-8 packages?

The OPA2130UAG4 follows the standard dual op amp pinout (V–, Out A, –In A, +In A, +In B, –In B, Out B, V+) defined in TI's D-package drawing, matching industry conventions such as the LM358 and TL072. However, it is not a drop-in replacement for those parts due to differences in input stage topology (FET vs bipolar/JFET), bias current, and noise performance - system-level validation is required before substitution.

What is the thermal resistance (θJA) of the OPA2130UAG4 in its SOIC-8 package?

The OPA2130UAG4 in the SOIC-8 (D) package has a junction-to-ambient thermal resistance (θJA) of 150°C/W, as specified in the SBOS053A datasheet Table 1. This value assumes standard JEDEC 2-layer board conditions (1-inch² copper pad, 2 oz Cu). For continuous operation at maximum ambient temperature (+85°C), power dissipation should be limited to ≤100 mW per amplifier to maintain junction temperature below 150°C.