Texas Instruments LM7372IMA

Overview

LM7372IMA from Texas Instruments is a high-speed dual voltage-feedback operational amplifier optimized for video, xDSL, and pulse amplification. It delivers 3000 V/µs slew rate, 120 MHz gain bandwidth product, −80 dBc HD2 at 1 MHz (2 V_P-P, R_L = 100 Ω), ±150 mA output current, and operates on ±5 V to ±15 V supplies - enabling use as an ADSL line driver or HDTV video buffer.

For engineers reviewing the LM7372IMA datasheet, LM7372IMA pinout, LM7372IMA application, or LM7372IMA equivalent, this page provides verified electrical performance, SOIC-8 PowerPAD package mapping, dual-channel op-amp functional context, and validated alternatives for high-fidelity signal distribution in broadband and video systems.

Technical Context

The LM7372IMA uses a complementary bipolar VIP™III process with class-AB output stage, enabling simultaneous high slew rate (3000 V/µs) and low harmonic distortion (−91 dBc HD3 at 1 MHz). Its voltage-feedback architecture supports stable operation at gains ≥ +2 or ≤ −1 without external compensation.

It features dual independent channels sharing one 8-pin SO PowerPAD package, with exposed thermal pad tied to V−. Input common-mode range extends to ±13 V (±15 V supply), and output swing reaches ±13.4 V into 1 kΩ - supporting wide dynamic range in split-supply video and telecom applications.

Key Specifications

Pinout & Package

LM7372IMA is housed in an 8-pin SOIC PowerPAD package (DDA) with exposed thermal pad electrically connected to V−. The pad must be soldered to a PCB copper pour tied to the negative supply plane for thermal integrity.

Key Features

Applications

Equivalent & Alternatives

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

Compared with THS3202D and OPA2691U, LM7372IMA uniquely balances ±5 V compatibility, 3000 V/µs slew rate, −91 dBc HD3, and 13 mA total supply current - making it the only dual op-amp qualified for both portable xDSL modems and broadcast video systems within a single SOIC-8 footprint.

Availability

LM7372IMA is available at Aetrix Electronics and suitable for ADSL line drivers, HDTV video buffers, pulse amplifiers, laser diode drivers, and professional broadcast camera signal chains requiring stable component supply across extended temperature ranges (−40°C to +85°C).

Supply support for LM7372IMA 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, embedded processing, and connectivity technologies, with over 90 years of innovation in high-performance analog ICs.

The LM7372IMA belongs to TI's high-speed operational amplifier product line, designed specifically for broadband communications and professional video systems demanding low distortion, high output current, and robust thermal performance in compact packages.

FAQ

What is the maximum output current capability of the LM7372IMA?

The LM7372IMA delivers ±150 mA per channel into resistive loads, verified under ±15 V supply conditions with RL = 100 Ω. This output current enables direct driving of twisted-pair lines, laser diodes, and low-impedance video cables without external buffers. At ±5 V supply, the guaranteed minimum is ±80 mA. The LM7372IMA maintains this current while preserving −80 dBc HD2 at 1 MHz - a key differentiator versus general-purpose op-amps.

Does the LM7372IMA support single-supply operation?

Yes, the LM7372IMA operates from +5 V to +30 V total supply (e.g., V+ = 5 V, V− = 0 V), as confirmed in Section 6.3 Recommended Operating Conditions. However, its input common-mode range is limited to 0 V to 3 V (±5 V mode) and output swing reduces to ±2.5 V at 80 mA load. For true rail-to-rail input/output, alternate amplifiers are recommended; LM7372IMA excels in split-supply high-fidelity applications like ADSL and broadcast video.

What thermal design considerations apply to the LM7372IMA SO PowerPAD package?

The LM7372IMA's 8-pin SO PowerPAD (DDA) has R_θJA = 47 °C/W when mounted with ≥2 in² copper area on top and bottom layers (1 oz Cu each), tied to V−. Without this heatsinking, junction temperature can exceed 150°C at full 150 mA output. TI recommends soldering the exposed pad directly to a V− plane and using thermal vias to inner ground planes. The LM7372IMA datasheet Figure 18 provides empirical thermal resistance vs. copper area curves.

Can the LM7372IMA replace the LM7371 in existing designs?

The LM7372IMA is the dual-channel version of the single-channel LM7371, sharing identical per-channel specifications: 3000 V/µs slew rate, 120 MHz GBW, −80 dBc HD2 at 1 MHz, and ±150 mA output. Pin compatibility exists only between LM7372IMA (SOIC-8 PowerPAD) and LM7371MA (SOIC-8 PowerPAD) for Channel A - but LM7372IMA adds Channel B on pins 5–7. Layout changes are required to route the second channel; however, shared BOM and qualification reduce redesign risk.

What is the harmonic distortion performance of LM7372IMA at 10 MHz?

At 10 MHz, the LM7372IMA achieves −50 dBc HD2 and −70 dBc HD3 (VS = ±12 V, AV = 2, VO = 2 V_P-P, RL = 100 Ω), per Figure 5 in the SNOS926F datasheet. This performance degrades predictably with increasing frequency due to loop-gain roll-off, but remains superior to most dual op-amps in its class - enabling use in 1080p60 video reconstruction filters and wideband test equipment where spurious-free dynamic range matters.