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STMicroelectronics TSM104IDT
- Part No.:
- TSM104IDT
- Manufacturer:
- STMicroelectronics
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TSM104IDT.pdf
- Description:
- IC OPAMP GP 4 CIRCUIT 16SO
- Quantity:
- Payment:
- Shipping:
Inventory:3,970
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Product details
Overview
TSM104IDT from STMicroelectronics is a quad operational amplifier with integrated adjustable shunt voltage reference, designed for power supply supervision and feedback control in compact DC-DC converters and linear regulators. It delivers 0.9 MHz gain-bandwidth, 375 µA/op supply current at 5 V, 0.5 mV typical input offset (TSM104A grade), ±1.5 V to ±15 V dual supply range, and 0.2 Ω typical dynamic impedance in its reference section.
For engineers reviewing the TSM104IDT datasheet, TSM104IDT pinout, TSM104IDT application, or TSM104IDT equivalent, key selection criteria include quad op-amp channel isolation, reference precision (±0.4% for TSM104A), sink current capability (1–100 mA), and SO16 thermal resistance (150 °C/W) in industrial temperature range (−40 °C to +105 °C).
Technical Context
The TSM104IDT integrates four independent high-precision op-amps and a programmable shunt reference in a single SO16 package. Its op-amps feature rail-to-rail output swing, 70 dB common-mode rejection, and 65 dB supply voltage rejection - enabling stable error amplification in feedback loops where ground-referenced sensing is required.
The embedded voltage reference supports adjustable output from Vref (2.475–2.525 V) up to 36 V via external resistor divider, with 0.2 Ω dynamic impedance and <30 mV total drift over −40 °C to +105 °C - making it suitable for precision overvoltage protection and programmable current limiting circuits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Current | 1.4–2.4 mA total (4 op-amps + ref), enabling ultra-low-power biasing in battery-backed supervisors |
| Gain-Bandwidth Product | 0.9 MHz typical, sufficient for stable compensation of switching regulator error amplifiers up to ~200 kHz |
| Input Offset Voltage | 0.5 mV typ (TSM104A), reducing DC error in precision voltage monitoring paths |
| Reference Precision | ±0.4% (TSM104A), supporting <1% output regulation tolerance in programmable supplies |
| Sink Current Range | 1–100 mA, allowing direct drive of optocoupler LEDs or MOSFET gate resistors without external buffers |
| Dynamic Impedance | 0.2 Ω typical, minimizing load-induced reference voltage shift during transient current steps |
| Input Bias Current | 20 nA max, enabling high-impedance sensor interface without significant leakage error |
Pinout & Package
Package: SO16 (Plastic Micropackage), 9.8 × 5.8 mm body, 1.27 mm pitch, 150 °C/W thermal resistance junction-to-ambient.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Output 1 | Amplifier A output; rail-to-rail capable, drives feedback node directly |
| 2 | Inverting Input 1 | High-impedance input for error amplifier inverting node (e.g., connected to divider tap) |
| 3 | Non-inverting Input 1 | Reference or setpoint input; accepts Vref or external voltage |
| 4 | VCC+ | Positive supply rail for all op-amps and reference; supports up to +30 V |
| 5 | Non-inverting Input 2 | Amplifier B non-inverting input; usable for secondary monitoring or comparator function |
| 6 | Inverting Input 2 | Amplifier B inverting input; configurable as current-sense amplifier input |
| 7 | Output 2 | Amplifier B output; independent channel for auxiliary control loop |
| 8 | Adjust | Reference cathode control node; sets output voltage via external R1/R2 divider |
| 9 | Output 4 | Amplifier D output; dedicated for overvoltage latch or shutdown logic |
| 10 | Inverting Input 4 | Amplifier D inverting input; commonly tied to Vref for threshold comparison |
| 11 | Non-inverting Input 4 | Amplifier D non-inverting input; receives monitored voltage for OV detection |
| 12 | Non-inverting Input 3 | Amplifier C non-inverting input; supports temperature-compensated biasing |
| 13 | Inverting Input 3 | Amplifier C inverting input; used for differential current sensing |
| 14 | Output 3 | Amplifier C output; provides isolated current limit signal |
| 15 | Cathode | Reference cathode terminal; sinks 1–100 mA; connects to load or optocoupler anode |
| 16 | VCC− | Negative supply rail; referenced to system ground in single-supply configurations |
Key Features
| Feature | Design Value |
|---|---|
| Quad op-amp + shunt reference integration | Reduces component count by ≥5 parts in multi-loop power management ICs |
| 0.2 Ω reference dynamic impedance | Maintains <10 mV output deviation under 50 mA step load, critical for tight regulation |
| −40 °C to +105 °C operating range | Validated for automotive under-hood and industrial motor drive environments |
| 0.5 mV input offset (TSM104A) | Enables ≤0.2% full-scale error in 2.5 V reference-based 12-bit ADC front-ends |
| 1.4 mA total quiescent current | Supports always-on supervisor operation with <10 µW standby power per channel |
Applications
| Switching Power Supply Feedback | Programmable Overvoltage Protection |
|---|---|
Use Scenario: Regulating output voltage of a 12 V/5 A buck converter using optocoupler-isolated feedback. IC Role / Device Role / Timing Role: Op-amp A acts as error amplifier comparing sampled output to internal 2.5 V reference; reference section drives optocoupler LED. Use Value: 0.2 Ω reference impedance ensures <5 mV LED current variation across 10–100 mA drive range, preserving loop stability. | Use Scenario: Detecting >15.5 V on a 12 V automotive battery rail and triggering shutdown. IC Role / Device Role / Timing Role: Op-amp D compares battery voltage against 2.5 V reference scaled by resistor divider; output pulls cathode low to disable PMIC. Use Value: 0.5 mV offset enables 50 mV detection threshold resolution, rejecting noise below 100 mVpp. |
| Linear Regulator Current Limit | Multi-Channel Sensor Signal Conditioning |
Use Scenario: Adding foldback current limiting to a 5 V/3 A LDO using sense-resistor feedback. IC Role / Device Role / Timing Role: Op-amp C amplifies voltage across 50 mΩ sense resistor; output controls pass transistor gate via level-shifted drive. Use Value: 20 nA input bias avoids >1 µV error in 100 µV sense signals, enabling ±1% current limit accuracy. | Use Scenario: Conditioning outputs from four thermistor-based temperature sensors in HVAC control unit. IC Role / Device Role / Timing Role: Each op-amp buffers and scales individual sensor voltage; shared reference provides stable 2.5 V excitation and ADC reference. Use Value: Channel separation >120 dB prevents crosstalk between 1 kHz–20 kHz sensor signals, preserving ±0.5 °C measurement fidelity. |
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 |
|---|---|---|---|
| TL431ACD | Single shunt reference only; no op-amps integrated | Requires external op-amps for feedback or protection functions | Select when only reference precision matters and board space allows discrete op-amps |
| TSM104WDT | Pin-compatible successor with improved 0.25 mV offset, lower 250 µA/op current, and extended −40 °C to +125 °C range | Direct drop-in replacement with enhanced performance and lifecycle support | Prefer for new designs requiring higher accuracy and extended temperature margin |
Compared with TL431ACD, TSM104IDT eliminates external op-amp count and PCB area but trades off reference-only flexibility; versus TSM104WDT, it offers legacy compatibility at the cost of slightly higher offset and narrower temperature range.
Availability
TSM104IDT is available at Aetrix Electronics and suitable for switching power supply feedback, programmable overvoltage protection, and linear regulator current limit applications requiring stable component supply and long-term industrial availability.
Supply support for TSM104IDT 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-grade ICs.
The TSM104 product line targets cost-sensitive, space-constrained power management systems requiring integrated op-amps and precision references - especially in AC-DC adapters, telecom power modules, and industrial SMPS.
FAQ
What is the maximum cathode current the TSM104IDT reference can safely sink?
The TSM104IDT reference section is rated for 1–100 mA cathode current under normal operation, with infinite short-circuit duration to ground. Absolute maximum cathode current is not specified beyond 100 mA, and sustained operation above this may exceed thermal limits in SO16 package due to 150 °C/W junction-to-ambient resistance.
Can the TSM104IDT operate from a single 5 V supply?
Yes - the device supports single-supply operation with VCC+ = 5 V and VCC− = 0 V (ground). All op-amps maintain functionality with input common-mode range extending to 0 V and output swing within 20 mV of ground, while the reference operates with cathode-to-anode voltage ≥2.5 V.
How does the TSM104A grade differ from standard TSM104 in offset voltage?
The TSM104A grade guarantees 0.5 mV typical input offset voltage at 25 °C (vs. 1 mV for standard TSM104), with tighter 3 mV max over full temperature range (−40 °C to +105 °C). This improves DC accuracy in precision regulation loops where sub-millivolt errors impact output tolerance.
Is the TSM104IDT pin-compatible with the obsolete TSM104IN DIP-16 version?
Yes - TSM104IDT (SO16) shares identical pinout and electrical specifications with TSM104IN (DIP-16), including terminal numbering, circuit roles, and absolute maximum ratings. Only mechanical form factor and thermal characteristics differ, with SO16 offering lower profile and higher power density.
TSM104IDT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- 16-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- 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:
- 1 mV
- 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
TSM104IDT FAQ
1.How can I place an order for TSM104IDT through Aetrix?
Please submit a Request for Quotation (RFQ) for TSM104IDT 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 TSM104IDT reliable?
The price and inventory of TSM104IDT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TSM104IDT is usually 5 days.
3.What payment methods are accepted for TSM104IDT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TSM104IDT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TSM104IDT?
TSM104IDT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TSM104IDT 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 TSM104IDT?
For technical support, including TSM104IDT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TSM104IDT requirements.
6.How does Aetrix verify that TSM104IDT is sourced from the original manufacturer or authorized distributors?
All TSM104IDT 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 TSM104IDT meets industry standards.
7.What is the process for return or replacement of TSM104IDT?
All TSM104IDT units undergo pre-shipment inspection (PSI). If there is an issue with TSM104IDT, 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 TSM104IDT part is unused and in its original packaging.
Return procedure for TSM104IDT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TSM104IDT Tags
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LM358DT
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MCP6006UT-E/OT
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