Texas Instruments INA152EA/2K5

Overview

INA152EA/2K5 from Texas Instruments is a precision unity-gain difference amplifier in MSOP-8 package, featuring ±250 µV input offset voltage, 94 dB common-mode rejection, 0.01% gain error, rail-to-rail output swing within 50 mV of either supply rail, and operation from ±1.35 V to ±10 V dual supply or +2.7 V to +20 V single supply. It serves as a high-accuracy signal conditioning front-end for current sensing, instrumentation, and differential line reception.

For engineers reviewing the INA152EA/2K5 datasheet, INA152EA/2K5 pinout, INA152EA/2K5 application, or INA152EA/2K5 equivalent, key selection criteria include guaranteed CMR over temperature, laser-trimmed resistor network accuracy, input common-mode range extending beyond rails, low quiescent current (650 µA max), and MSOP-8 thermal performance (θ_JA = 150 °C/W).

Technical Context

The INA152EA/2K5 integrates a CMOS op amp with a monolithic 40 kΩ precision resistor network laser-trimmed for ratio matching-enabling accurate unity-gain difference amplification without external components. Its input stage supports common-mode voltages from 2(V–) to 2(V+) – 2 V, enabling measurement of signals above and below supply rails.

Output stage delivers rail-to-rail swing (within 50 mV of V+ or V–) with 0.4 V/µs slew rate and 23 µs 0.1% settling time for 9 V step. Gain error drift is specified at ±1 ppm/°C, and offset drift at ±3 µV/°C, both validated across –40°C to +85°C industrial temperature range.

Key Specifications

Pinout & Package

INA152EA/2K5 is housed in an 8-pin MSOP (VSSOP-DGK) package with 0.65 mm pitch, 3.0 mm × 3.0 mm body, and exposed thermal pad (not electrically connected). Thermal resistance θ_JA = 150 °C/W at standard PCB layout.

Key Features

Applications

Equivalent & Alternatives

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

Compared with INA152EA/2K5, INA149IDR trades size and power for higher precision and voltage range, while AD8271ARMZ offers better offset at the cost of reduced input flexibility-making INA152EA/2K5 the balanced choice for compact, low-power, rail-compatible differential amplification.

Availability

INA152EA/2K5 is available at Aetrix Electronics and suitable for current sensing in motor drives, precision instrumentation front-ends, automotive battery monitoring, differential line reception, and low-cost industrial data acquisition requiring stable component supply and verified MSOP-8 thermal performance.

Supply support for INA152EA/2K5 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 delivering analog, embedded processing, and connectivity solutions with emphasis on precision, reliability, and energy efficiency.

The INA152 product line delivers integrated, laser-trimmed difference amplifiers optimized for high-accuracy, low-power signal conditioning in industrial, automotive, and portable instrumentation systems.

FAQ

What is the maximum common-mode input voltage range supported by the INA152EA/2K5?

The INA152EA/2K5 supports a common-mode input voltage range from 2(V–) to 2(V+) – 2 V when VIN+ – VIN– = 0 V. At ±10 V supplies, this translates to –20 V to +18 V; at +5 V single supply, it covers –2.5 V to +5.5 V. This extended range enables direct measurement of signals beyond supply rails-critical for shunt-based current sensing and floating sensor interfaces. The INA152EA/2K5 maintains 94 dB CMRR across this full range under specified conditions.

Can the INA152EA/2K5 operate from a single 3.3 V supply?

Yes, the INA152EA/2K5 is fully specified for single-supply operation from +2.7 V to +20 V. At +3.3 V, it delivers rail-to-rail output swing (within 50 mV of V+ or V–), maintains 94 dB CMRR, and draws ≤650 µA quiescent current. Input common-mode range extends from 2(V–) = 0 V to 2(V+) – 2 V = +4.6 V, allowing compatibility with 3.3 V logic and sensors. Performance curves in the SBOS184 datasheet confirm functionality at +2.5 V and +5 V, validating robustness at 3.3 V.

What is the function of Pin 5 (NC) on the INA152EA/2K5?

Pin 5 of the INA152EA/2K5 is designated NC (No Internal Connection)-it is not bonded to any internal circuitry and carries no electrical function. Texas Instruments' package drawing DGK confirms this pin is unused. It must be left floating or optionally tied to ground for mechanical stability; no signal routing or termination is required. Misconnecting Pin 5 to active nodes may compromise thermal performance or cause unintended coupling due to proximity to sensitive analog pins.

How does the Ref pin (Pin 1) affect output offset in the INA152EA/2K5?

The Ref pin (Pin 1) establishes the DC reference level for the INA152EA/2K5 output. When grounded, output is centered at 0 V for differential input (V_IN+ – V_IN–). Applying a voltage to Ref sums directly with the amplified difference signal: V_O = (V_IN+ – V_IN–) + V_REF. This enables offset nulling (e.g., ±1 mV adjustment via 100 kΩ potentiometer) or level shifting. Source impedance must remain <10 Ω to preserve CMRR; higher impedances degrade common-mode rejection by introducing imbalance in the internal resistor network.

Is the INA152EA/2K5 pin-compatible with other members of the INA152 family?

Yes, all variants of the INA152 (including INA152EA/250, INA152EA/2K5, and INA152EA/2K5.A) share identical MSOP-8 (DGK) pinout, electrical specifications, and thermal characteristics. The suffixes denote tape-and-reel packaging quantities (250 or 2500 units) and lead finish options (NIPDAU or NIPDAUAG), not functional differences. Layouts designed for INA152EA/2K5 are fully compatible with other /250 or /2K5 variants-no PCB changes are required for substitution within the same temperature grade (–40°C to +85°C).