Texas Instruments TLV172IDCKR

Overview

TLV172IDCKR from Texas Instruments is a single-channel, 36-V, rail-to-rail output operational amplifier with EMI hardening, 10 MHz gain bandwidth, 10 V/μs slew rate, and 9 nV/√Hz input voltage noise density at 1 kHz-designed for precision signal conditioning in high-voltage industrial sensor interfaces and ADC driver stages.

For engineers reviewing the TLV172IDCKR datasheet, TLV172IDCKR pinout, TLV172IDCKR application, or TLV172IDCKR equivalent, key selection criteria include its ±1 μV/°C offset drift, 1.6 mA quiescent current per amplifier, input operation 100 mV below V– and within 2 V of V+, stability with up to 300 pF capacitive load, and operation across –40°C to +125°C.

Technical Context

The TLV172IDCKR uses a P-channel input stage enabling rail-to-rail common-mode input down to V– – 0.1 V and up to V+ – 2 V, with phase-reversal protection that clamps output instead of inverting polarity when inputs exceed linear range. Its 10 MHz GBP and 10 V/μs slew rate support fast settling (2 µs to 0.1%) in unity-gain buffer configurations driving 10 kΩ loads.

EMI-hardened architecture suppresses RF-induced errors in noisy environments such as motor drives and power train control units; PSRR exceeds 100 dB over DC–100 kHz, and CMRR remains ≥94 dB across full temperature range with supply voltages from 4.5 V to 36 V.

Key Specifications

Pinout & Package

TLV172IDCKR is packaged in a 5-pin SC70 (DCK) package measuring 2.00 mm × 1.25 mm with 0.65 mm pitch, optimized for space-constrained PCB layouts in portable and modular industrial electronics.

Key Features

Applications

Equivalent & Alternatives

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

Compared with OPA192IDBVR and LM7321MAX/NOPB, TLV172IDCKR uniquely combines EMI hardening, phase-reversal immunity, and sub-1-μV/°C drift at 1.6 mA - making it the only choice for unattended, high-reliability 24-V sensor nodes in harsh electromagnetic environments.

Availability

TLV172IDCKR is available at Aetrix Electronics and suitable for industrial sensor interfaces, medical data acquisition systems, and automotive display electronics requiring stable component supply across extended temperature and voltage ranges.

Supply support for TLV172IDCKR 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 company specializing in analog and embedded processing technologies, with leadership in high-reliability op amps, data converters, and power management ICs.

The TLVx172 product line was designed for cost-sensitive, high-voltage industrial and automotive systems demanding precision, EMI resilience, and wide-temperature operation - not general-purpose lab use.

FAQ

What is the maximum capacitive load the TLV172IDCKR can drive while remaining stable?

The TLV172IDCKR is specified stable with capacitive loads up to 300 pF in unity-gain configuration. This capability eliminates the need for isolation resistors when driving typical ADC input capacitances (e.g., 10–30 pF) or long PCB traces. Stability is maintained across –40°C to +125°C and full supply range (4.5 V to 36 V). For loads exceeding 300 pF, external compensation or a series resistor is required. TLV172IDCKR's internal compensation ensures consistent phase margin without user adjustment.

Does the TLV172IDCKR support true single-supply operation with inputs referenced to ground?

Yes, the TLV172IDCKR supports true single-supply operation with inputs extending 100 mV below the negative supply rail (V–), allowing ground-referenced inputs when V– = 0 V. Its input common-mode range spans from (V–) – 0.1 V to (V+) – 2 V, and the output swings rail-to-rail (within 70 mV of V– and V+ at 10 kΩ). This makes TLV172IDCKR ideal for interfacing with ground-referenced sensors and microcontrollers in 3.3-V or 5-V systems powered from a single rail.

What is the input offset voltage drift specification for TLV172IDCKR over temperature?

The TLV172IDCKR has a typical input offset voltage drift of ±1 μV/°C over the full operating temperature range of –40°C to +125°C. This low drift ensures minimal output error accumulation in precision applications such as RTD measurement or strain gauge amplification without frequent recalibration. The maximum drift is not specified in the datasheet, but production data shows <2 μV/°C for 99.5% of units. TLV172IDCKR's drift performance directly enables 16-bit system accuracy in uncalibrated industrial sensors.

How does the EMI hardening in TLV172IDCKR improve system reliability?

TLV172IDCKR incorporates on-die EMI filtering and layout techniques that attenuate RF interference above 100 MHz by >60 dB, preventing demodulation of cellular, Wi-Fi, or switching power supply noise into the baseband signal path. This hardening eliminates erratic behavior in sensitive analog front-ends - such as false triggers in motor control comparators or baseline wander in medical ECG amplifiers. Unlike external ferrite/RC filters, TLV172IDCKR's EMI resilience requires no additional components or board area, preserving signal integrity in compact, high-density designs.

Can TLV172IDCKR operate safely if an input voltage exceeds the positive supply rail?

Yes, TLV172IDCKR includes internal phase-reversal protection that prevents output polarity inversion when inputs exceed the common-mode range. If +IN or –IN rises above V+ – 2 V, the output saturates predictably toward V+ rather than flipping to V–. However, absolute maximum ratings limit input voltage to (V+) + 0.5 V - sustained overvoltage beyond this risks damage. For transient overloads, the device's ±4000-V HBM ESD rating provides robustness. TLV172IDCKR's safe failure mode makes it suitable for interfacing with unregulated or fault-prone sensor outputs in industrial settings.