Texas Instruments TLV27L1CDBVT

Overview

TLV27L1CDBVT from Texas Instruments is a single-channel micropower rail-to-rail output operational amplifier in a 5-pin SOT-23 package, delivering 160 kHz gain-bandwidth, 7 μA quiescent current per channel, 89 nV/√Hz input noise voltage, and operation from 2.7 V to 16 V supply. It serves precision low-power signal conditioning in portable medical sensors and smoke detectors.

For engineers reviewing the TLV27L1CDBVT datasheet, TLV27L1CDBVT pinout, TLV27L1CDBVT application, or TLV27L1CDBVT equivalent, key selection criteria include its 1 pA input bias current, −40°C to 125°C industrial-grade temperature range (C-suffix = 0°C to 70°C), rail-to-rail output swing down to 50 mV from rail at ±5 V, and BiMOS input stage enabling high input impedance with low power.

Technical Context

The TLV27L1CDBVT employs a BiMOS input stage to achieve 1 pA typical input bias current while maintaining rail-to-rail output swing via complementary bipolar output transistors. Its 160 kHz unity-gain bandwidth and 0.06 V/μs slew rate are optimized for low-frequency precision sensing rather than high-speed amplification.

It operates across a wide 2.7 V to 16 V single-supply range (or ±1.35 V to ±8 V dual supply), with input common-mode range extending from −0.2 V to VS+1.2 V and output swing within 50–120 mV of either rail depending on load and supply. Input offset voltage is specified at 5 mV max over full temperature range.

Key Specifications

Pinout & Package

SOT-23-5 (DBV) package: ultra-compact surface-mount footprint (2.9 mm × 1.6 mm × 1.15 mm), thermally enhanced with exposed pad option not present in standard DBV variant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLV27L1CDBVT, TLV2381IDBVR offers marginally lower power but sacrifices input common-mode range, while TLC27L1CDR trades bandwidth and rail-to-rail capability for slightly lower noise - neither is pin-compatible, and both require PCB redesign.

Availability

TLV27L1CDBVT is available at Aetrix Electronics and suitable for portable medical sensors, power monitoring circuits, and smoke detectors requiring stable component supply with guaranteed long-term availability and consistent parametric performance.

Supply support for TLV27L1CDBVT 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 over 90 years of innovation in precision analog ICs.

The TLV27Lx family was designed specifically for ultra-low-power, rail-to-rail output applications in battery-constrained systems such as portable instrumentation and safety-critical environmental monitors.

FAQ

What is the operating temperature range for TLV27L1CDBVT?

The TLV27L1CDBVT is rated for the commercial temperature range of 0°C to 70°C, as indicated by the "C" suffix in the part number. This makes it suitable for indoor industrial and consumer applications where ambient conditions remain within this band. It is not rated for extended industrial (−40°C to 125°C) operation - that variant is TLV27L1IDBVT. The device's electrical specifications, including input offset voltage and quiescent current, are guaranteed across this 0°C to 70°C range.

Does TLV27L1CDBVT support rail-to-rail input?

No, TLV27L1CDBVT does not support rail-to-rail input. Its input common-mode voltage range is specified as −0.2 V to VS+1.2 V, meaning the inputs can operate slightly beyond the positive rail but not down to the negative rail (GND). For true rail-to-rail input capability, consider alternatives like the TLV9001. However, TLV27L1CDBVT does provide rail-to-rail *output* swing - delivering voltage within 50 mV of both supply rails under typical load conditions - which is essential for maximizing dynamic range in single-supply systems.

What is the maximum capacitive load TLV27L1CDBVT can drive stably?

According to the datasheet, TLV27L1CDBVT maintains ≥62° phase margin with up to 50 pF capacitive load when driving a 100 kΩ resistive load (Figure 16). Driving larger capacitive loads - such as ADC input capacitors or long PCB traces - risks instability and peaking. For loads exceeding 50 pF, TI recommends adding a small series resistor (e.g., 10–50 Ω) between the amplifier output and the capacitor to isolate the reactive load and preserve stability. Layout best practices, including short traces and proper grounding, are also critical to avoid unintended parasitic capacitance.

Can TLV27L1CDBVT be used in a dual-supply configuration?

Yes, TLV27L1CDBVT supports dual-supply operation with recommended supplies of ±1.35 V to ±8 V, as stated in the "Recommended Operating Conditions" table. In dual-supply mode, the device retains its rail-to-rail output swing and 1 pA input bias current. GND becomes the reference midpoint, and the input common-mode range extends from −0.2 V to +VS+1.2 V relative to GND. This configuration is useful in legacy analog systems or when interfacing with bipolar signal sources, though its primary design emphasis remains single-supply, low-voltage battery operation.

Is TLV27L1CDBVT pin-compatible with other SOT-23 op-amps like the LMV321?

No, TLV27L1CDBVT is not pin-compatible with LMV321 or most generic SOT-23 op-amps. Its pinout is: Pin 1 = OUT, Pin 2 = GND, Pin 3 = IN+, Pin 4 = VDD, Pin 5 = IN−. In contrast, LMV321 uses Pin 1 = OUT, Pin 2 = IN−, Pin 3 = IN+, Pin 4 = GND, Pin 5 = VDD - a completely different assignment. Attempting direct substitution would result in incorrect connections and circuit failure. Always verify pin mapping against the specific device's datasheet before board layout or replacement.