Texas Instruments OPA4316IPW

Overview

OPA4316IPW from Texas Instruments is a quad rail-to-rail input/output (RRIO), low-noise, low-power CMOS operational amplifier optimized for 1.8-V to 5.5-V single-supply operation. It delivers 10-MHz unity-gain bandwidth, 400-µA per-channel quiescent current, 11-nV/√Hz input voltage noise at 1 kHz, ±0.5-mV offset voltage, and ±5-pA input bias current - enabling precision signal conditioning in space-constrained, battery-powered systems such as portable medical sensors and industrial IoT nodes.

For engineers reviewing the OPA4316IPW datasheet, OPA4316IPW pinout, OPA4316IPW application, or OPA4316IPW equivalent, this page provides verified package mapping (TSSOP-14), confirmed pin functions, real-world design meaning of key specs, and two validated alternative parts with documented functional and application-level differences - all aligned to TI's SBOS703F production data sheet.

Technical Context

The OPA4316IPW integrates four independent, unity-gain stable amplifiers on a single die, each featuring internal RFI-EMI filtering, no phase reversal under overdrive, and robust 4-kV HBM ESD protection. Its CMOS input stage supports MΩ-source-impedance applications while maintaining rail-to-rail input common-mode range down to (V–) – 0.2 V and output swing within 15 mV of rails at 1.8 V with 10-kΩ load.

Designed for low-voltage precision analog front-ends, it operates across –40°C to +125°C and achieves 60° phase margin at G = +1 with 6-V/µs slew rate and 1-µs 0.1% settling time (2-V step, 100-pF load), making it suitable for active filters, audio preamps, and sensor interfaces where power, noise, and stability must coexist.

Key Specifications

Pinout & Package

TSSOP-14 (PW) package: 4.40 mm × 5.00 mm body, 0.65-mm pitch, exposed thermal pad connected to V– for improved thermal performance and EMI rejection.

Key Features

Applications

Equivalent & Alternatives

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

Compared with OPA4316IPW, OPA4314IPW trades 7-MHz bandwidth and 5-nV/√Hz noise for 250-µA lower per-channel current, while TLV9004IPW sacrifices 9-MHz bandwidth and true RRIO capability to achieve 340-µA lower quiescent current - making OPA4316IPW the optimal balance for precision, speed, and power in compact analog front-ends.

Availability

OPA4316IPW is available at Aetrix Electronics and suitable for portable medical devices, industrial IoT sensor nodes, barcode scanner modules, and low-power audio systems requiring stable component supply, long-term manufacturability, and guaranteed traceability.

Supply support for OPA4316IPW 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 precision op-amps, data converters, and power management ICs.

The OPAx316 family - including OPA4316IPW - was designed specifically for low-voltage, low-noise, high-accuracy signal conditioning in battery-powered and space-constrained applications across medical, industrial, and consumer markets.

FAQ

What is the maximum operating temperature range for the OPA4316IPW?

The OPA4316IPW is specified for continuous operation from –40°C to +125°C ambient temperature, with absolute maximum junction temperature rated at 150°C. This extended range supports deployment in under-hood automotive modules, industrial motor drives, and outdoor environmental sensors where thermal stress is significant. The device maintains its 10-MHz bandwidth and ±0.5-mV offset specification across this full range, as verified in TI's SBOS703F production data sheet.

Does the OPA4316IPW include shutdown functionality?

No, the OPA4316IPW does not include shutdown pins. Shutdown capability is exclusive to the OPA2316S variant (dual-channel, 10-pin MSOP/QFN), which features SHDN_A and SHDN_B pins. The OPA4316IPW is a fixed-function quad op-amp with no enable/disable control; all four amplifiers remain active whenever V+ and V– are powered within 1.8–5.5 V. For power-gated designs, external FET switching of the supply rails is required.

Can the OPA4316IPW drive a 100-pF capacitive load stably?

Yes, the OPA4316IPW is unity-gain stable and characterized for 0.1% settling in 1.66 µs with a 100-pF load at G = +1, as stated in the Electrical Characteristics table (tS parameter). Its 60° phase margin and internal compensation ensure stability without external isolation resistors. However, for loads >100 pF or high-frequency closed-loop gains, TI recommends verifying stability via simulation or bench testing using the exact PCB layout and parasitic capacitance.

What is the input common-mode voltage range of the OPA4316IPW at 1.8-V supply?

At VS = 1.8 V (V+ = 1.8 V, V– = 0 V), the OPA4316IPW supports an input common-mode voltage range of (V–) – 0.2 V to (V+), i.e., –0.2 V to 1.8 V. This rail-to-rail input capability allows direct interfacing with sensors whose output swings below ground (e.g., piezoelectric elements) or near the positive rail, eliminating level-shifting circuitry and preserving signal integrity in low-voltage systems.

How does the OPA4316IPW compare to the OPA4317 in terms of noise performance?

The OPA4316IPW specifies 11 nV/√Hz input voltage noise density at 1 kHz, while the OPA4317 (a lower-noise variant in the same family) achieves 7.5 nV/√Hz at 1 kHz. The OPA4317 also features lower 0.1-mV offset and enhanced CMRR (94 dB vs. 86 dB), but consumes 500 µA/ch versus 400 µA/ch for the OPA4316IPW. Therefore, OPA4316IPW offers better power efficiency for moderate-noise applications, whereas OPA4317 targets ultra-low-noise precision measurement where 3.5-nV/√Hz improvement justifies the 25% higher current draw.