Texas Instruments TLV2171IDGKT

Overview

TLV2171IDGKT from Texas Instruments is a dual-channel, rail-to-rail output, low-noise (16 nV/√Hz), low-quiescent-current (525 µA per amplifier) operational amplifier operating from 2.7 V to 36 V single supply (±1.35 V to ±18 V). It features ±1 µV/°C offset drift, 3 MHz gain bandwidth, and EMI-hardened inputs with RFI filtering-designed for precision signal conditioning in battery-powered instruments and AC-DC converter feedback loops.

For engineers reviewing the TLV2171IDGKT datasheet, TLV2171IDGKT pinout, TLV2171IDGKT application, or TLV2171IDGKT equivalent, this page delivers verified electrical specifications, VSSOP-8 package details, dual-channel functional context, and validated alternative options for cost-sensitive industrial and embedded systems requiring stable DC accuracy and wide supply flexibility.

Technical Context

The TLV2171IDGKT implements a P-channel input stage enabling rail-to-rail common-mode input operation down to 100 mV below V− and within 2 V of V+, with phase-reversal protection preventing output inversion during overdrive. Its unity-gain stable architecture supports capacitive loads up to 200 pF without oscillation.

It delivers 105 dB typical CMRR and PSRR across –40°C to +125°C, with input bias current of 10 pA and open-loop gain ≥94 dB, making it suitable for high-impedance sensor interfaces and precision active filters where DC stability and noise immunity are critical.

Key Specifications

Pinout & Package

VSSOP-8 (DGK) package: 3.00 mm × 3.00 mm body, 0.65 mm pitch, thin profile - optimized for space-constrained PCB layouts in portable and modular power electronics.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLV2171IDGKT, OPA2316IDGKR trades bandwidth and DC precision for extreme low power, while LMV722MMX/NOPB sacrifices supply flexibility and EMI robustness for lower unit cost in benign environments.

Availability

TLV2171IDGKT is available at Aetrix Electronics and suitable for AC-DC converter feedback, battery-powered test equipment, and TFT-LCD source driver bias applications requiring stable component supply across long production lifecycles.

Supply support for TLV2171IDGKT 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 delivering analog, embedded processing, and connectivity solutions with deep expertise in precision analog design and industrial-grade reliability.

The TLVx171 product line targets cost-sensitive industrial and personal electronics systems needing EMI-hardened, low-noise, single-supply op amps with wide voltage range and high DC accuracy across extended temperature.

FAQ

What is the maximum capacitive load the TLV2171IDGKT can drive without instability?

The TLV2171IDGKT is unity-gain stable with capacitive loads up to 200 pF when driving a resistive load ≥10 kΩ. For heavier loads (e.g., >500 pF), a series isolation resistor (e.g., 50 Ω) between the output and capacitance is required to maintain phase margin and prevent peaking or oscillation. This behavior is confirmed in Figure 14 and Figure 15 of the SBOS783 datasheet.

Does the TLV2171IDGKT support true rail-to-rail input operation?

The TLV2171IDGKT supports rail-to-rail input operation down to 100 mV below V− and up to (V+) – 2 V for normal performance. It can accept inputs up to V+ (i.e., 100 mV beyond the top rail), but with degraded CMRR and offset performance within that 2 V margin. This extended input range is explicitly documented in Section 7.4.1 of the datasheet.

What is the ESD tolerance of the TLV2171IDGKT inputs?

The TLV2171IDGKT features ±4000 V HBM and ±750 V CDM ESD ratings per JEDEC standards. Internal steering diodes and an absorption device protect against transient overstress, but input current must be limited to ≤10 mA during fault conditions to prevent damage - as specified in Section 6.1 Absolute Maximum Ratings and Section 7.3.3 Electrical Overstress.

Can the TLV2171IDGKT operate from a single 3.3-V supply?

Yes, the TLV2171IDGKT is fully specified from 2.7 V to 36 V single supply, including 3.3 V operation. At 3.3 V, it maintains rail-to-rail output swing (within ~100 mV of rails), 105 dB PSRR, and 525 µA quiescent current per amplifier - enabling direct integration into modern low-voltage microcontroller-based systems without supply translation.

Is the TLV2171IDGKT pin-compatible with other dual op amps in VSSOP-8 packages?

No - the TLV2171IDGKT uses a nonstandard VSSOP-8 pinout optimized for dual-channel symmetry (e.g., OUT A / –IN A / +IN A / V− / +IN B / –IN B / OUT B / V+). It is not pin-compatible with industry-standard dual op amps like LMV722 or OPA2316, which use different pin assignments for power and inputs. PCB layout must follow TI's DGK footprint.