Texas Instruments TLV2172QDGKRQ1

Overview

TLV2172QDGKRQ1 from Texas Instruments is a dual-channel, AEC-Q100 Grade 1 automotive operational amplifier with rail-to-rail output, 10 MHz gain bandwidth, 10 V/µs slew rate, and 9 nV/√Hz input voltage noise. It operates from 4.5 V to 36 V single supply (±2.25 V to ±18 V), supports inputs 100 mV below V− and within 2 V of V+, and delivers low offset drift (±1 µV/°C) for precision current sensing in HEV/EV power trains.

For engineers reviewing the TLV2172QDGKRQ1 datasheet, TLV2172QDGKRQ1 pinout, TLV2172QDGKRQ1 application, or TLV2172QDGKRQ1 equivalent, key selection criteria include its automotive qualification (–40°C to +125°C), EMI-hardened design, 1.6 mA per amplifier quiescent current, 116 dB CMRR, and stable operation with up to 300 pF capacitive loads.

Technical Context

The TLV2172QDGKRQ1 uses a bipolar input stage with phase-reversal protection, enabling safe operation when input signals exceed the common-mode range without output inversion. Its architecture maintains high open-loop gain (97–115 dB) and PSRR (>100 dB) across the full 4.5–36 V supply range.

It features internal ESD protection (HBM ±4 kV, CDM ±1 kV), rail-to-rail output swing (within 70 mV of rails at 10 kΩ), and overload recovery time of 200 ns. Input bias current remains ultra-low (±10 pA) and independent of common-mode voltage, supporting high-impedance sensor interfaces.

Key Specifications

Pinout & Package

VSSOP-8 package (3.00 mm × 3.00 mm body size, 0.65 mm pitch) with exposed thermal pad for enhanced power dissipation in automotive under-hood environments.

Key Features

Applications

Equivalent & Alternatives

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

Compared with LM2904BQDRQ1 and TSV912AQDRQ1, the TLV2172QDGKRQ1 uniquely balances 36 V operation, 10 MHz bandwidth, and automotive-grade noise/EMI performance - making it the only option qualified for high-voltage HEV/EV power train sensing where all three attributes are simultaneously required.

Availability

TLV2172QDGKRQ1 is available at Aetrix Electronics and suitable for automotive climate controls, HEV/EV power trains, and ADAS camera modules requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for TLV2172QDGKRQ1 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 automotive, industrial, and personal electronics markets.

The TLV2172QDGKRQ1 belongs to TI's automotive-qualified precision op amp portfolio, designed specifically for high-reliability signal conditioning in electric vehicle power systems, advanced driver assistance sensors, and safety-critical control loops.

FAQ

What is the maximum capacitive load the TLV2172QDGKRQ1 can drive without external compensation?

The TLV2172QDGKRQ1 is specified to remain stable with capacitive loads up to 300 pF when driving resistive loads ≥2 kΩ. This capability eliminates the need for series isolation resistors in many cable-driving and MOSFET-gate applications. For loads exceeding 300 pF, a 25–50 Ω series resistor at the output restores phase margin. Stability is verified per Figure 13–14 in the SBOS915 datasheet.

Does the TLV2172QDGKRQ1 support true rail-to-rail input operation?

The TLV2172QDGKRQ1 supports input voltages from V− − 0.1 V to V+ − 2 V for full-spec operation. It can accept inputs up to V+ + 0.1 V, but with degraded parameters: offset voltage increases to 7 mV, CMRR drops to 65 dB, and gain bandwidth falls to 0.3 MHz. For precision applications, keep inputs within the guaranteed common-mode range.

How does the phase-reversal protection in TLV2172QDGKRQ1 improve system reliability?

Unlike conventional op amps that invert output when inputs exceed common-mode range, the TLV2172QDGKRQ1 clamps the output to the appropriate rail. In motor control feedback loops, this prevents runaway conditions caused by transient overvoltage events - such as IGBT switching spikes - ensuring closed-loop stability even during electrical overstress.

What is the thermal performance of TLV2172QDGKRQ1 in VSSOP-8 package at 125°C ambient?

In the DGK (VSSOP-8) package, the TLV2172QDGKRQ1 has RθJA = 158°C/W. At 125°C ambient and 3.2 mA total quiescent current (2 × 1.6 mA), junction temperature rise is ≤50°C, resulting in TJ ≈ 175°C - safely below the 150°C absolute maximum. Derating is recommended for sustained high-output-current operation.

Is TLV2172QDGKRQ1 compatible with standard SOIC-8 PCB footprints?

No. The TLV2172QDGKRQ1 uses the DGK package (VSSOP-8), which has 3.00 mm × 3.00 mm body size and 0.65 mm lead pitch - significantly smaller than SOIC-8 (3.90 mm × 4.90 mm, 1.27 mm pitch). A dedicated VSSOP-8 footprint with 0.3 mm pad width and 0.45 mm solder mask opening is required for reliable assembly.