Texas Instruments TSM104WIDE4

Overview

TSM104WIDE4 from Texas Instruments is a quad operational amplifier with integrated programmable voltage reference, designed for precision feedback and regulation in power control circuits. It delivers 5 mV max input offset voltage (25°C), 30 V max supply range, 0.9 MHz unity-gain bandwidth, and adjustable reference output from 2.5 V to 36 V - enabling use in switch-mode power supply error amplifiers and linear regulator reference stages.

For engineers reviewing the TSM104WIDE4 datasheet, TSM104WIDE4 pinout, TSM104WIDE4 application, or TSM104WIDE4 equivalent, key selection criteria include its dual-function integration (4 op-amps + shunt reference), wide 3 V–30 V supply operation, rail-to-rail input common-mode range including ground, low 375 µA/channel quiescent current, and guaranteed –40°C to 105°C industrial temperature performance.

Technical Context

The TSM104WIDE4 integrates four independent high-precision op-amps and a single adjustable shunt voltage reference on one die. Each op-amp features input common-mode range extending to ground, large output swing (0 V to VCC – 2 V), and 2.5 V reference-derived biasing for stable closed-loop control.

The internal reference operates as a 2.5 V bandgap source with external resistor programming (V_OUT = 2.5 V × (1 + R1/R2)), supporting sink currents from 0.5 mA to 100 mA and exhibiting 0.2 Ω typical dynamic impedance - enabling direct use in TL431-style feedback networks without external gain stages.

Key Specifications

Pinout & Package

Package: SOIC-16 (D package), 10.3 mm × 6.5 mm × 1.75 mm body, gull-wing leads, RoHS-compliant NiPdAu finish, MSL Level-1.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TL431ACDR + LM324DR, TSM104WIDE4 reduces component count and improves thermal tracking but trades 0.3 MHz GBW margin. Against TSM104WAIDR, it sacrifices 2 mV offset and 0.6% reference tolerance for lower unit cost while retaining identical layout, qualification, and operating envelope.

Availability

TSM104WIDE4 is available at Aetrix Electronics and suitable for switch-mode power supplies, battery chargers, and linear voltage regulation requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for TSM104WIDE4 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 power management technologies, with over 50 years of innovation in high-reliability industrial and automotive ICs.

The TSM104 family was engineered to consolidate error amplification and voltage reference functions in power supply control ICs - targeting cost-sensitive, space-constrained applications in consumer, industrial, and telecom power systems.

FAQ

What is the maximum cathode current supported by the TSM104WIDE4 reference section?

The TSM104WIDE4 reference section supports a maximum cathode current (I_K) of 100 mA, as specified in the Absolute Maximum Ratings table. This allows direct driving of optocoupler LEDs or small-signal transistors in isolated feedback paths without external current boosting. The device maintains regulation down to 0.5 mA minimum cathode current, making it suitable for ultra-low-power standby modes. All TSM104WIDE4 electrical characteristics, including cathode current limits, are validated across the full –40°C to 105°C operating range.

Can the TSM104WIDE4 operate from a single 5 V supply?

Yes, the TSM104WIDE4 operates from a single 5 V supply (VCC+ = 5 V, VCC− = GND). Its input common-mode range includes ground, and its output swing extends from 0 V to VCC – 2 V (i.e., 0–3 V), enabling full-rail operation in 5 V logic-compatible systems. The reference section remains functional with V_KA ≥ 2.5 V, so a 5 V supply provides sufficient headroom for programmed outputs up to 36 V via external resistors. Quiescent current is 375 µA per op-amp channel at 5 V, ensuring low power consumption.

What is the function of the ADJUST pin on the TSM104WIDE4?

The ADJUST pin on the TSM104WIDE4 is the cathode connection point of the internal 2.5 V bandgap reference, used with the CATHODE pin to form a programmable shunt regulator. When configured with two external resistors (R1 from ADJUST to output, R2 from output to ground), the output voltage is V_OUT = 2.5 V × (1 + R1/R2). This allows precise setting of feedback thresholds from 2.5 V to 36 V. The ADJUST pin must not be left floating; it requires a defined DC path to maintain regulation stability and low output impedance (0.2 Ω typical).

Does the TSM104WIDE4 include ESD protection, and what level is rated?

Yes, the TSM104WIDE4 includes 2-kV Human Body Model (HBM) ESD protection on all pins, as confirmed in the Features section of the datasheet. This protection level meets standard industrial handling requirements and safeguards against damage during PCB assembly and system integration. The protection circuitry is integrated into the silicon process and does not degrade reference accuracy or op-amp performance. No external TVS diodes are required for basic ESD robustness, though system-level transient suppression may still be needed in harsh environments.

How does the TSM104WIDE4 differ from the TSM104WA grade?

The TSM104WIDE4 is the standard-grade variant of the TSM104 family, with 5 mV max input offset voltage (25°C) and 1% max reference voltage tolerance (25°C). In contrast, the TSM104WA grade offers tighter specifications: 3 mV max VIO and 0.4% max VREF tolerance at 25°C. Both share identical pinout, package (SOIC-16), operating temperature range (–40°C to 105°C), and functional architecture. The TSM104WIDE4 is optimized for cost-sensitive applications where ±1% regulation accuracy suffices, while the WA grade targets high-precision systems requiring sub-0.5% total output error.