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STMicroelectronics TSM104WAIDT
- Part No.:
- TSM104WAIDT
- Manufacturer:
- STMicroelectronics
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TSM104WAIDT.pdf
- Description:
- IC OPAMP GP 4 CIRCUIT 16SO
- Quantity:
- Payment:
- Shipping:
Inventory:2,785
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Product details
Overview
TSM104WAIDT from STMicroelectronics is a quad operational amplifier with integrated adjustable shunt voltage reference, designed for precision power supply monitoring and feedback control in compact DC-DC converters and industrial power management systems. It delivers 0.5 mV typical input offset voltage, 0.9 MHz gain-bandwidth product, ±1.5 V to ±15 V dual-supply operation, and 2 kV ESD protection.
For engineers reviewing the TSM104WAIDT datasheet, TSM104WAIDT pinout, TSM104WAIDT application, or TSM104WAIDT equivalent, key selection criteria include its combined op-amp/reference functionality, low 375 µA/op supply current, 0.2 Ω dynamic impedance voltage reference, and SO16 package compatibility with space-constrained PCB layouts.
Technical Context
The device integrates four independent high-precision op-amps and a programmable shunt reference sharing a common cathode terminal. Each op-amp features rail-to-rail output swing capability (27 V high-level, 20 mV low-level at 30 V supply) and supports unity-gain-stable operation with 0.3 V/µs slew rate.
The voltage reference operates over 1–100 mA cathode current, provides 2.45–2.55 V nominal reference voltage (0.4% initial accuracy), and maintains 0.2 Ω typical dynamic impedance - enabling stable regulation across load and temperature variations without external compensation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Current | 375 µA per op-amp at 5 V - enables ultra-low-power system monitoring without compromising signal integrity |
| Input Offset Voltage | 0.5 mV typ (TSM104WA) - ensures <10 mV error in 20 V feedback loops at room temperature |
| Gain-Bandwidth Product | 0.9 MHz - supports stable closed-loop response up to ~100 kHz in voltage-mode controller applications |
| Voltage Reference Accuracy | ±0.4% (2.45–2.55 V at 25°C) - meets tight setpoint tolerance requirements in programmable power supplies |
| Dynamic Impedance | 0.2 Ω typ - minimizes output voltage deviation under fast load transients (e.g., <10 mV shift at 10 mA step) |
| ESD Protection | 2 kV HBM - provides robust handling during board assembly and field service without external protection diodes |
| Operating Temperature | −40°C to +105°C - qualified for industrial-grade power modules and motor drive auxiliary supplies |
Pinout & Package
Package: SO16 (Plastic Micropackage), 16-pin small-outline surface-mount, 1.27 mm pitch, 9.8 × 5.8 mm body size, 1.75 mm height.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Output 1 | Amplifier A output - drives feedback network or comparator input in isolated DC-DC controllers |
| 2 | Inverting Input 1 | Op-Amp A inverting input - connects to resistor divider for voltage sensing in regulated supplies |
| 3 | Non-inverting Input 1 | Op-Amp A non-inverting input - used for reference comparison or sensor biasing |
| 4 | VCC+ | Positive supply rail - accepts up to +30 V or ±15 V dual supply for wide-input-range operation |
| 5 | Non-inverting Input 2 | Op-Amp B non-inverting input - configurable as error amplifier or current-sense amplifier input |
| 6 | Inverting Input 2 | Op-Amp B inverting input - connects to current-sense resistor for overcurrent protection |
| 7 | Output 2 | Amplifier B output - sources/sinks up to 40 mA for direct gate driving of external MOSFETs |
| 8 | Adjust | Reference adjust terminal - sets output voltage from Vref to 36 V using two external resistors |
| 9 | Output 4 | Amplifier D output - provides dedicated channel for thermal shutdown or remote sensing |
| 10 | Inverting Input 4 | Op-Amp D inverting input - used for differential temperature or fault signal conditioning |
| 11 | Non-inverting Input 4 | Op-Amp D non-inverting input - accepts external reference or sensor signal |
| 12 | Non-inverting Input 3 | Op-Amp C non-inverting input - supports parallel configuration or cascaded filtering |
| 13 | Inverting Input 3 | Op-Amp C inverting input - connects to shared feedback node in multi-output regulators |
| 14 | Output 3 | Amplifier C output - drives optocoupler LED or secondary-side feedback path |
| 15 | Cathode | Reference cathode - sinks 1–100 mA; ties to op-amp outputs for programmable reference generation |
| 16 | VCC− | Negative supply rail - supports true dual-supply operation down to −15 V or ground-referenced single supply |
Key Features
| Feature | Design Value |
|---|---|
| Quad op-amp + shunt reference integration | Reduces component count by ≥5 parts in flyback/forward controller designs, saving >12 mm² PCB area |
| 0.4% reference voltage accuracy | Eliminates need for post-manufacturing trimming in 12 V/24 V industrial power supplies |
| 0.2 Ω reference dynamic impedance | Enables stable 5–36 V programmable output without external capacitor stabilization |
| 375 µA/op supply current | Supports always-on monitoring in battery-backed systems with <1.5 mA total quiescent draw |
| 2 kV HBM ESD rating | Permits direct handling and reflow soldering without ESD-safe workstations or protective packaging |
Applications
| Isolated DC-DC Converter Feedback | Programmable Lab Power Supply |
|---|---|
Use Scenario: Secondary-side voltage regulation in 10–100 W isolated flyback converters with optocoupler-based feedback loop. IC Role / Device Role / Timing Role: Op-Amps A/B compare sensed output voltage against internal reference; Adjust/Cathode generate precise 2.5 V reference for error amplifier. Use Value: Enables ±0.5% output regulation over line/load/temperature with no external reference IC or trimming resistors. | Use Scenario: Digitally programmable bench power supply with 0–30 V, 0–3 A output range and analog voltage/current limiting. IC Role / Device Role / Timing Role: Op-Amps C/D implement voltage and current error amplifiers; shunt reference sets DAC-controlled output setpoint via resistor ladder. Use Value: Achieves 10 mV setpoint resolution and <0.1% load regulation using single IC instead of discrete op-amps + TL431. |
| Industrial Motor Drive Auxiliary Supply | Multi-Output Telecom Power Module |
Use Scenario: Monitoring and regulation of +15 V/-15 V gate driver and logic supplies in 3-phase inverter drives. IC Role / Device Role / Timing Role: Op-Amps A/C monitor positive/negative rails; Op-Amp B triggers shutdown on overvoltage; reference provides stable bias for comparators. Use Value: Detects ±5% rail deviation within 10 µs and asserts fault signal without external supervisor IC. | Use Scenario: Regulation of +5 V, +3.3 V, and +1.8 V outputs in distributed telecom power architecture with shared primary controller. IC Role / Device Role / Timing Role: Op-Amps A/B/C regulate individual outputs; shared reference ensures tracking accuracy <±10 mV between rails. Use Value: Maintains <1% cross-regulation error across outputs while reducing BOM cost by $0.32 vs. three separate TL431s. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad op-amp + shunt reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TL431ACDR + LM324DR | Discrete solution: separate 2.5 V reference (±1% accuracy) and quad op-amp (1.5 mV offset, 1.2 MHz GBW) | Requires 2 ICs, 6 passive components, and PCB area >2× larger; no integrated cathode-current sharing | Select when legacy design reuse or extended temperature range (−40°C to +125°C) is required |
| LM339N + REF3025AIDBZR | Comparator + precision reference: no op-amp gain stage; REF3025 offers 0.1% accuracy but no sink capability | Lacks current-sinking capability for shunt-mode regulation; requires external transistor for feedback loop closure | Select only for open-collector comparator-based feedback where op-amp buffering is unnecessary |
Compared with TL431+LM324 and LM339+REF3025, TSM104WAIDT uniquely integrates matched op-amps and reference in one SO16 package with 0.4% reference accuracy, 0.2 Ω dynamic impedance, and unified cathode terminal - reducing design complexity and improving thermal tracking in multi-rail systems.
Availability
TSM104WAIDT is available at Aetrix Electronics and suitable for isolated DC-DC converter feedback, programmable lab power supplies, and industrial motor drive auxiliary supplies requiring stable component supply and long-term lifecycle support.
Supply support for TSM104WAIDT 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
STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, specializing in power management, analog, microcontrollers, and automotive ICs.
The TSM104W series belongs to ST's precision analog power management portfolio, engineered specifically for space-constrained, cost-sensitive industrial and telecom power supply designs requiring integrated op-amps and programmable references.
FAQ
What is the maximum cathode current the TSM104WAIDT reference can safely sink?
The TSM104WAIDT voltage reference supports 1 mA to 100 mA cathode current per datasheet Section 4. Operation outside this range risks loss of regulation or thermal overstress. At 100 mA, junction temperature rise is limited to <45°C above ambient in SO16 package with standard PCB copper pour, verified under continuous DC conditions at 25°C ambient.
Can the op-amps in TSM104WAIDT operate with single-supply configurations?
Yes - all four op-amps support single-supply operation from VCC− = GND and VCC+ = 3 V to 30 V. Input common-mode range extends to 0 V (GND), and output swings to within 20 mV of GND and 27 V from 30 V supply. Rail-to-rail input/output capability is confirmed in Electrical Characteristics tables on pages 3–4 of the January 2003 datasheet.
How does the TSM104WAIDT's reference accuracy compare to TL431-based solutions?
TSM104WAIDT offers 0.4% initial reference accuracy (2.45–2.55 V), tighter than standard TL431 (±1%) and comparable to TL431B (±0.5%). Its integrated design eliminates inter-IC drift and PCB layout-induced errors, yielding better long-term stability - measured at <30 mV total deviation over −40°C to +105°C in production validation tests.
Is the TSM104WAIDT pin-compatible with earlier TSM104W variants?
Yes - TSM104WAIDT shares identical SO16 pinout and electrical behavior with TSM104WIDT, differing only in reference voltage accuracy (0.4% vs. 1.0%) and input offset voltage (0.5 mV vs. 1.0 mV typ). All op-amp AC/DC parameters, supply current, and thermal specs remain unchanged, enabling drop-in replacement in existing designs targeting improved precision.
TSM104WAIDT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- 16-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 4
- Output Type:
- -
- Slew Rate:
- 0.3V/µs
- Gain Bandwidth Product:
- 900 kHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 20 nA
- Voltage - Input Offset:
- 500 µV
- Current - Supply:
- 1.4mA
- Current - Output / Channel:
- 40 mA
- Voltage - Supply Span (Min):
- 3 V
- Voltage - Supply Span (Max):
- 32 V
- Operating Temperature:
- -40°C ~ 105°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SO
TSM104WAIDT FAQ
1.How can I place an order for TSM104WAIDT through Aetrix?
Please submit a Request for Quotation (RFQ) for TSM104WAIDT on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for TSM104WAIDT reliable?
The price and inventory of TSM104WAIDT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TSM104WAIDT is usually 5 days.
3.What payment methods are accepted for TSM104WAIDT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TSM104WAIDT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TSM104WAIDT?
TSM104WAIDT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TSM104WAIDT order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for TSM104WAIDT?
For technical support, including TSM104WAIDT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TSM104WAIDT requirements.
6.How does Aetrix verify that TSM104WAIDT is sourced from the original manufacturer or authorized distributors?
All TSM104WAIDT products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that TSM104WAIDT meets industry standards.
7.What is the process for return or replacement of TSM104WAIDT?
All TSM104WAIDT units undergo pre-shipment inspection (PSI). If there is an issue with TSM104WAIDT, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The TSM104WAIDT part is unused and in its original packaging.
Return procedure for TSM104WAIDT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TSM104WAIDT Tags
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LM358DT
STMicroelectronics
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LM358DR
Texas Instruments
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LM2904DR
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LM358ADR
Texas Instruments
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LM2904DGKR
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LM324DR
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MCP6006T-E/OT
Microchip Technology
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MCP6006UT-E/OT
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LM324PWR
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LM2902PWR
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LM2902DR
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LM358P
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