Texas Instruments LMC6464BIN

Overview

LMC6464BIN from Texas Instruments is a quad micropower rail-to-rail input/output CMOS operational amplifier optimized for ultra-low-power, low-voltage systems. It delivers 20 µA per amplifier quiescent current, 0.25 mV input offset voltage, and rail-to-rail output swing within 10 mV of either rail at 5 V with 25 kΩ load - enabling high-accuracy signal conditioning in battery-powered medical sensors and portable transducer interfaces.

For engineers reviewing the LMC6464BIN datasheet, LMC6464BIN pinout, LMC6464BIN application, or LMC6464BIN equivalent, key selection criteria include verified micropower operation at 3 V/5 V, confirmed 150 fA input bias current, guaranteed rail-to-rail common-mode range exceeding both supplies, and documented thermal performance in PDIP-14 packaging for industrial ambient conditions.

Technical Context

The LMC6464BIN implements a CMOS input stage with gate-isolated p-channel inputs, enabling femtoampere-level input bias current and rail-to-rail common-mode voltage range extending beyond both supply rails. Its output stage uses complementary push-pull MOSFETs to achieve rail-to-rail swing while maintaining 180 Ω sourcing / 130 Ω sinking output impedance at 3 V.

This architecture supports stable unity-gain operation with capacitive loads up to 200 pF and provides 85 dB CMRR and 85 dB PSRR at 5 V - critical for precision DC-coupled instrumentation where common-mode noise rejection and supply ripple immunity must be preserved across temperature (–40°C to +85°C).

Key Specifications

Pinout & Package

LMC6464BIN is housed in a 14-pin plastic dual in-line package (PDIP-N), with 0.300-inch body width, through-hole mounting, and JEDEC MS-001 compliant footprint. Thermal resistance R_θJA is 81 °C/W, supporting operation up to +85°C ambient without forced airflow.

Key Features

Applications

Equivalent & Alternatives

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

Compared with LMC6464BIN, LMC6484IN trades 6× higher power for 30× more bandwidth, while TLV2464CDR sacrifices 27× more supply current for marginal input current improvement - making LMC6464BIN the optimal balance for long-life, precision DC signal chains.

Availability

LMC6464BIN is available at Aetrix Electronics and suitable for portable medical sensors, battery monitoring systems, transducer interface modules, and low-power environmental sensors requiring stable component supply across extended production lifecycles.

Supply support for LMC6464BIN 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 precision analog ICs for industrial, automotive, and medical markets.

The LMC646x family was designed specifically for micropower, rail-to-rail precision amplification in battery-constrained applications - emphasizing ultra-low input bias current, sub-millivolt offset, and guaranteed operation down to 3 V.

FAQ

What is the maximum supply voltage rating for LMC6464BIN?

The LMC6464BIN has an absolute maximum supply voltage (V_S = V+ − V−) of 16 V. Operation at 15.5 V is supported under recommended conditions, but sustained use above 13 V requires output short-circuit protection to avoid reliability degradation. This limit applies regardless of single- or dual-supply configuration and is validated per TI's SNOS725E datasheet Section 5.1.

Does LMC6464BIN support true rail-to-rail input common-mode range?

Yes, LMC6464BIN supports a rail-to-rail input common-mode voltage range that extends 0.2 V beyond both supply rails - e.g., –0.2 V to 5.3 V when V+ = 5 V and V− = 0 V. This is confirmed in Section 5.6 of the datasheet, where V_CM min/max values are explicitly specified across temperature and supply conditions.

What is the typical input bias current of LMC6464BIN and how is it validated?

The typical input bias current of LMC6464BIN is ±0.15 pA at 25°C, with a maximum of ±10 pA over –40°C to +85°C. This value is measured per standard JEDEC test methods and published in Section 5.6 (Electrical Characteristics) of the SNOS725E datasheet, under "INPUT BIAS CURRENT" with test condition IB = ±0.15 pA.

Can LMC6464BIN drive a 25 kΩ load while maintaining rail-to-rail output swing?

Yes, LMC6464BIN guarantees rail-to-rail output swing within 10 mV of either rail when driving a 25 kΩ load at V+ = 5 V - e.g., 0.01 V to 4.99 V. This specification is explicitly stated in the "OUTPUT" subsection of Section 5.6 and verified across temperature in both LMC646xA and LMC646xB grade variants.

Is LMC6464BIN pin-compatible with other members of the LMC646x family?

LMC6464BIN shares identical pinout with LMC6464D (SOIC-14) and LMC6464M (metal can), but is not pin-compatible with dual-channel LMC6462 variants due to differing channel count and pin assignments. The PDIP-14 package (N suffix) maintains mechanical and electrical compatibility across all LMC6464 variants per TI's packaging documentation.