Texas Instruments TLV369IDCKR

Overview

TLV369IDCKR from Texas Instruments is a single-channel, nano-power operational amplifier optimized for ultra-low-voltage, rail-to-rail input/output signal conditioning in battery-powered medical and portable instrumentation. It delivers 800 nA quiescent current, 400 µV typical offset voltage, 12 kHz gain-bandwidth product, and zero-crossover distortion across 1.8 V to 5.5 V supply operation - enabling precision DC-coupled amplification in blood glucose meters and sensor front-ends.

For engineers reviewing the TLV369IDCKR datasheet, TLV369IDCKR pinout, TLV369IDCKR application, or TLV369IDCKR equivalent, key selection criteria include its guaranteed rail-to-rail input common-mode range (V– to V+), sub-1-µV/°C offset drift, 10 pA input bias current, and SC70-5 package compatibility with space-constrained PCB layouts for wearable and point-of-care devices.

Technical Context

The TLV369IDCKR employs a proprietary zero-crossover distortion architecture that eliminates the input stage transition region found in conventional complementary-input op amps, ensuring monotonic linearity over the full –0.2 V to 5.2 V common-mode input range at 5 V supply. Its internal charge-pump bias circuit enables stable operation down to 1.8 V while maintaining 80 dB minimum CMRR and 94 dB PSRR.

This device operates in a single functional mode with no shutdown or enable control; it draws only 800 nA per channel and sustains 25 mV output swing from rail into 10 kΩ load across –40°C to +85°C, making it suitable for direct interfacing with low-output-impedance sensors and high-precision ADC drivers without external level-shifting.

Key Specifications

Pinout & Package

TLV369IDCKR is housed in a 5-pin SC70 package (2.00 mm × 1.25 mm body size), optimized for high-density portable PCBs and compatible with standard 0.65 mm pitch reflow assembly processes.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar nanopower, rail-to-rail op amp applications.

Compared with LPV821DBVR and OPA316IDBVR, the TLV369IDCKR uniquely combines sub-1-µA quiescent current, zero-crossover linearity, and guaranteed rail-to-rail input in a 5-pin SC70 package - making it irreplaceable for DC-accurate, battery-limited applications where input signal spans the full supply range.

Availability

TLV369IDCKR is available at Aetrix Electronics and suitable for blood glucose meters, portable gas sensors, wearable ECG monitors, and industrial battery voltage monitors requiring stable component supply across extended production lifecycles.

Supply support for TLV369IDCKR 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 innovation in precision amplifiers and low-power signal chains.

The TLV369 family was designed specifically for cost-optimized, ultra-low-power sensor signal conditioning in portable medical, environmental, and industrial instrumentation - prioritizing rail-to-rail performance at nanoamp current levels.

FAQ

What is the maximum operating temperature range for TLV369IDCKR?

The TLV369IDCKR is specified for continuous operation from –40°C to +125°C junction temperature, with recommended ambient operating conditions of –40°C to +85°C. Its thermal resistance (RθJA) is 293.3°C/W in the SC70-5 package, requiring minimal heatsinking in typical low-power applications. The device maintains 400 µV typical offset and 800 nA quiescent current across this full range, validated per TI's SBOS757 production data.

Does TLV369IDCKR support true rail-to-rail input with 1.8 V supply?

Yes, TLV369IDCKR supports true rail-to-rail input common-mode voltage range from V– to V+ at all supply voltages between 1.8 V and 5.5 V. At 1.8 V supply, the input accepts signals from 0 V to 1.8 V without crossover distortion or gain nonlinearity - confirmed by Figure 1 (Normalized Offset Voltage vs Common-Mode Voltage) in the TLV369IDCKR datasheet SBOS757.

Can TLV369IDCKR drive capacitive loads without oscillation?

TLV369IDCKR is stable with capacitive loads up to 20 pF, as verified in Figure 10 (Small-Signal Overshoot vs Capacitive Load). For loads exceeding 20 pF, a series isolation resistor (typically 10–100 Ω) between OUT and the capacitive node is required to maintain phase margin. This limitation arises from its 12 kHz GBW and internal compensation; it is not unity-gain stable into heavy capacitive loads like ADC input capacitance without external damping.

What is the input protection scheme on TLV369IDCKR?

TLV369IDCKR features diode-clamped inputs rated for ±0.5 V beyond the supply rails (V– – 0.5 V to V+ + 0.5 V), with absolute maximum input current limited to ±10 mA. External series resistors are mandatory if input signals exceed this range - for example, a 100 kΩ resistor limits current to 10 µA for a 1 V overvoltage. This protection is documented in Section 6.1 (Absolute Maximum Ratings) and Figure 14 of the SBOS757 datasheet.

Is TLV369IDCKR pin-compatible with other SC70-5 op amps?

No, TLV369IDCKR uses a nonstandard SC70-5 pinout: Pin 1 = +IN, Pin 2 = V–, Pin 3 = –IN, Pin 4 = OUT, Pin 5 = V+. This differs from industry-standard SC70-5 op amps (e.g., OPA316IDBVR assigns Pin 1 = OUT, Pin 2 = –IN, Pin 3 = +IN, Pin 4 = V–, Pin 5 = V+). PCB layout must follow TI's DCK package diagram - incorrect routing will cause functional failure.