Texas Instruments TLV2172IDGKT

Overview

TLV2172IDGKT from Texas Instruments is a dual-channel, 36-V, rail-to-rail output operational amplifier with EMI hardening, 10 MHz gain bandwidth, 10 V/µs slew rate, and ±1 µV/°C offset drift-designed for precision signal conditioning in high-voltage industrial sensor interfaces and ADC driver stages.

For engineers reviewing the TLV2172IDGKT datasheet, TLV2172IDGKT pinout, TLV2172IDGKT application, or TLV2172IDGKT equivalent, key selection criteria include its 4.5–36 V single-supply operation, 9 nV/√Hz input voltage noise at 1 kHz, 116 dB typical CMRR, low 1.6 mA per amplifier quiescent current, and guaranteed operation from –40°C to +125°C.

Technical Context

The TLV2172IDGKT integrates a PCH/NCH complementary input stage enabling rail-to-rail input operation down to 100 mV below V– and within 2 V of V+, with no phase reversal beyond common-mode limits. Its 10 MHz GBP and 10 V/µs slew rate support fast settling (2 µs to 0.1%) in unity-gain stable configurations driving up to 300 pF capacitive loads.

EMI-hardened architecture suppresses RF-induced errors in noisy environments such as motor drives and power converters. Input bias current remains ultra-low (±10 pA typ) across temperature, supporting high-impedance transducer and photodiode interfaces without significant DC error drift.

Key Specifications

Pinout & Package

VSSOP-8 (DGK) package: 3.00 mm × 3.00 mm body, 0.65 mm pitch, thin-profile surface-mount construction optimized for space-constrained PCB layouts and thermal performance in dense industrial modules.

Key Features

Applications

Equivalent & Alternatives

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

Compared with OPA2182IDGKT and LM2904BQDR, TLV2172IDGKT uniquely combines EMI hardening, 10 MHz bandwidth, and 9 nV/√Hz noise at mid-tier pricing-making it the preferred choice for next-generation industrial and medical signal chains demanding robustness and speed without premium cost.

Availability

TLV2172IDGKT is available at Aetrix Electronics and suitable for industrial motor control, medical diagnostics equipment, and automotive display systems requiring stable component supply across extended temperature ranges and multi-year production cycles.

Supply support for TLV2172IDGKT 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 high-reliability op amp design for industrial, automotive, and medical markets.

The TLVx172 product line was engineered for cost-sensitive, high-voltage precision applications requiring EMI resilience, wide supply range, and low drift-targeting industrial automation, test equipment, and energy infrastructure systems.

FAQ

What is the maximum capacitive load the TLV2172IDGKT can drive while remaining stable?

The TLV2172IDGKT is specified stable with capacitive loads up to 300 pF in unity-gain configuration, as confirmed in the datasheet's Typical Characteristics section (Figure 13–14). This eliminates the need for series isolation resistors when driving LCD column lines, long PCB traces, or piezoelectric transducers-reducing component count and board area in space-constrained designs. Stability is maintained without external compensation across the full –40°C to +125°C operating range.

Does the TLV2172IDGKT support true rail-to-rail input operation?

The TLV2172IDGKT supports input voltages down to 100 mV below V– and within 2 V of V+ for normal operation, as stated in the Description section. It can accept inputs up to 100 mV beyond V+ with reduced performance. This near rail-to-rail input capability enables direct interfacing with ground-referenced sensors and single-supply systems without level-shifting circuitry-simplifying front-end design in industrial and medical applications.

What is the typical input offset voltage drift of the TLV2172IDGKT over temperature?

The TLV2172IDGKT has a typical input offset voltage drift of ±1 µV/°C across the full –40°C to +125°C operating range, per the Electrical Characteristics table (dVOS/dT parameter). This low drift ensures minimal calibration drift in precision measurement systems-contributing less than 0.15 mV total offset shift over the entire temperature span, which is critical for unattended operation in environmental monitoring and process control equipment.

How does the EMI hardening in the TLV2172IDGKT improve system reliability?

The EMI hardening in the TLV2172IDGKT reduces susceptibility to electromagnetic interference in the 100 MHz–2 GHz band, as verified by TI's internal RF immunity testing. This prevents erroneous output behavior in noisy environments such as motor drives, switch-mode power supplies, and wireless communication modules-eliminating display artifacts in TFT-LCD systems and false triggers in safety-critical sensor interfaces without requiring additional shielding or filtering components.

Is the TLV2172IDGKT pin-compatible with other dual op amps in the VSSOP-8 package?

The TLV2172IDGKT uses a standard VSSOP-8 pinout (DGK) matching industry conventions for dual op amps: pins 1/7 = outputs, 2/6 = inverting inputs, 3/5 = noninverting inputs, 4 = V–, 8 = V+. While functionally compatible with many dual op amps sharing this pinout (e.g., OPA2313, LMV722), actual pin compatibility must be verified per application-especially regarding input voltage range, output swing, and ESD protection structure. Always confirm functional equivalence against the target replacement's datasheet.