Texas Instruments TLV2322IP

Overview

TLV2322IP from Texas Instruments is a dual, low-voltage, rail-to-rail output operational amplifier optimized for single-supply operation in battery-powered sensor signal conditioning. It operates from 2.7V to 8V, draws only 54 μA max supply current over –40°C to +85°C, and features 10¹² Ω input impedance and input common-mode range extending to the negative rail and up to VDD – 1.2V. It is widely used in smoke detectors and pressure transmitters.

For engineers reviewing the TLV2322IP datasheet, TLV2322IP pinout, TLV2322IP application, or TLV2322IP equivalent, key selection criteria include ultra-low quiescent current (≤54 μA), guaranteed operation at 3V/5V, rail-to-rail output swing, and SOIC-8 package compatibility with space-constrained industrial sensor nodes.

Technical Context

The TLV2322IP uses Texas Instruments' LinCMOS™ silicon-gate process to achieve ultra-low bias currents (<1 pA typ) and high input impedance (10¹² Ω), enabling direct interfacing with high-impedance sensors and passive filter networks. Its input stage supports common-mode voltages down to the negative rail and up to VDD – 1.2V across temperature.

It delivers rail-to-rail output swing with low-level output voltage as low as 115 mV (typ) at 1 mA load and maintains stable unity-gain bandwidth (27 kHz at 3V, 85 kHz at 5V) and phase margin ≥28° across –40°C to +85°C - critical for precision DC-coupled amplification in field transmitter front-ends.

Key Specifications

Pinout & Package

TLV2322IP is supplied in an 8-pin PDIP (Plastic Dual In-line Package) with 0.300-inch body width and through-hole mounting. Pin spacing is 0.100 inch, compatible with standard 0.100" pitch PCB footprints.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual low-power op-amp applications.

Compared with TLV2322IP, TLV2372IP trades 2× higher supply current for 3× bandwidth and tighter offset, while LPV322MG reduces current by 80% but sacrifices temperature range, output drive, and offset voltage performance - making TLV2322IP the balanced choice for industrial sensor signal chains requiring proven reliability, moderate precision, and extended battery life.

Availability

TLV2322IP is available at Aetrix Electronics and suitable for smoke detector manufacturing, industrial pressure transmitter design, and battery-powered motion sensor development requiring stable component supply and long-term obsolescence management.

Supply support for TLV2322IP 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 and low-power signal conditioning ICs.

The TLV2322IP belongs to TI's legacy LinCMOS™ low-voltage op-amp family, designed specifically for ultra-low-power, single-supply industrial sensor interfaces where battery life, input impedance, and rail-to-rail output are critical.

FAQ

What is the maximum operating temperature range for the TLV2322IP?

The TLV2322IP is fully specified and tested over an operating free-air temperature range of –40°C to +85°C. All key parameters - including supply current (54 μA max), input offset voltage (9 mV max), and common-mode input range - are guaranteed across this full industrial temperature range, making TLV2322IP suitable for harsh-environment field transmitter applications.

Does the TLV2322IP support true rail-to-rail input operation?

The TLV2322IP does not support rail-to-rail input - its common-mode input voltage range extends to the negative rail (GND) and up to VDD – 1.2V across temperature. While it accepts signals at GND, it cannot handle inputs at the positive rail (VDD). This design prioritizes low-power operation and output swing over full input range, which is typical for LinCMOS™ amplifiers like the TLV2322IP.

Can the TLV2322IP drive a 10kΩ load while maintaining rail-to-rail output?

Yes - the TLV2322IP guarantees rail-to-rail output swing into loads ≥1MΩ. When driving a 10kΩ load, output swing degrades: VOL is typically 190 mV (max) and VOH is typically 1.7V (min) at VDD = 3V and 25°C. For 10kΩ loads, verify actual swing in your circuit using the curves in Figure 5-11 and Figure 5-12 of the TLV2322IP datasheet.

Is the TLV2322IP pin-compatible with other dual op-amps in SOIC-8 or TSSOP-8 packages?

No - the TLV2322IP uses an industry-standard 8-pin PDIP footprint (0.300" width), which is physically and electrically incompatible with SOIC-8 or TSSOP-8 packages due to different pin pitch (0.100" vs 0.050") and body dimensions. While functional equivalents exist in SOIC-8 (e.g., TLV2322ID), the TLV2322IP itself is PDIP-only and requires dedicated through-hole layout.

What is the typical input bias current of the TLV2322IP at 85°C?

The TLV2322IP exhibits a typical input bias current of 175 pA at 85°C and 25°C, with a maximum of 2000 pA over the full temperature range. This ultra-low bias current - enabled by LinCMOS™ technology - ensures minimal error when interfacing with high-impedance sources such as pH electrodes or photodiode transimpedance feedback networks in precision TLV2322IP designs.