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STMicroelectronics TS934BID
- Part No.:
- TS934BID
- Manufacturer:
- STMicroelectronics
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TS934BID.pdf
- Description:
- IC OPAMP GP 4 CIRCUIT 14SO
- Quantity:
- Payment:
- Shipping:
Inventory:2,027
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Product details
Overview
TS934BID from STMicroelectronics is a quad rail-to-rail output micropower operational amplifier optimized for low-voltage, battery-powered systems. It delivers 2 mV max input offset voltage, 20 μA supply current per amplifier, and rail-to-rail output swing (2.95 V at 3 V supply, RL = 100 kΩ), operating from 2.7 V to 10 V single supply. Used in pH meters, digital scales, and automotive sensor signal conditioning.
For engineers reviewing the TS934BID datasheet, TS934BID pinout, TS934BID application, or TS934BID equivalent, key selection criteria include ultra-low input bias current (1 pA), latch-up immunity (Class A), ESD protection (2 kV HBM), and SO-14 package compatibility with industrial and automotive temperature range (−40 °C to +105 °C).
Technical Context
The TS934BID integrates four independent CMOS-input op-amps in a single SO-14 package, each featuring rail-to-rail output stage enabling full dynamic range utilization near supply rails. Its 1 pA typical input bias current and 2 mV max input offset voltage support high-impedance sensor interfacing without significant error contribution.
Designed for single-supply operation down to 2.7 V, it maintains stable phase margin (65°) and 100 kHz gain-bandwidth product under capacitive loads up to 50 pF, supporting precision DC-coupled amplification and low-frequency signal conditioning in portable instrumentation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 2.7 V to 10 V single supply - enables direct integration into Li-ion, 3.3 V, and 5 V systems without level-shifting. |
| Input Offset Voltage | 2 mV max (TS934B grade) - ensures ≤0.2% error in 1 V full-scale sensor outputs without trimming. |
| Supply Current per Amp | 20 μA typ. - supports >1-year battery life in coin-cell–powered smoke detectors or portable PH meters. |
| Input Bias Current | 1 pA typ. - preserves signal integrity when amplifying from high-Z sources like glass electrodes or piezoresistive sensors. |
| Output Swing | 2.95 V at 3 V supply (RL = 100 kΩ) - delivers >98% of rail-to-rail dynamic range for maximum ADC utilization. |
| CMRR / PSRR | 85 dB min. - rejects common-mode noise from shared PCB ground or noisy power rails in mixed-signal environments. |
| Gain-Bandwidth Product | 100 kHz - sufficient for DC–10 kHz sensor signal conditioning (e.g., thermocouple, strain gauge, pH electrode). |
Pinout & Package
TS934BID is housed in a 14-lead SOIC (SO-14) package with standard 1.27 mm pitch, 8.55–8.75 mm body width, and 1.35–1.75 mm height - compatible with automated SMT assembly and IPC-7351B footprint IPC-SOIC-14-127P855X175X135N.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | In1− | Inverting input of amplifier 1 - connects to feedback network or sensor reference point. |
| 2 | In1+ | Non-inverting input of amplifier 1 - accepts high-impedance sensor signals with minimal loading (1 pA bias). |
| 3 | Out1 | Output of amplifier 1 - drives ADC input or next-stage buffer with rail-to-rail swing capability. |
| 4 | VCC− | Negative supply rail (GND for single-supply use) - must be low-impedance to minimize PSRR degradation. |
| 5 | In2+ | Non-inverting input of amplifier 2 - isolated from amp1 inputs to prevent crosstalk in multi-channel designs. |
| 6 | In2− | Inverting input of amplifier 2 - used for differential or inverting configurations with matched external resistors. |
| 7 | Out2 | Output of amplifier 2 - independently buffered output; no internal connection to Out1. |
| 8 | VCC+ | Positive supply rail (2.7–10 V) - decoupling capacitor (100 nF) required within 5 mm for stability. |
| 9 | In3− | Inverting input of amplifier 3 - supports cascaded filtering or active gain stages without inter-stage coupling caps. |
| 10 | In3+ | Non-inverting input of amplifier 3 - referenced to same VCC− as other amps for consistent common-mode range. |
| 11 | Out3 | Output of amplifier 3 - capable of sourcing/sinking 1.5 mA, suitable for driving 10 kΩ loads directly. |
| 12 | In4+ | Non-inverting input of amplifier 4 - enables simultaneous 4-channel signal conditioning on one IC. |
| 13 | In4− | Inverting input of amplifier 4 - configurable as unity-gain buffer or precision difference amplifier. |
| 14 | Out4 | Output of amplifier 4 - fully rail-to-rail; VOL = 10 mV at 3 V supply ensures clean logic-level compatibility. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail output | Delivers 2.95 V output at 3 V supply (RL = 100 kΩ), maximizing usable dynamic range for 12-bit+ ADCs. |
| Micropower operation | 20 μA per amplifier enables 4-channel sensing in battery-powered devices with <100 μA total quiescent draw. |
| Ultra-low input bias current | 1 pA typical eliminates voltage errors across >10 MΩ source impedances (e.g., pH electrodes, photodiode preamps). |
| Automotive-grade qualification | Specified for −40 °C to +105 °C operation and qualified per AEC-Q100, supporting under-hood sensor modules. |
| Latch-up immunity (Class A) | Withstands 200 mA transient current without destructive latch-up - critical for robustness in industrial control I/O. |
Applications
| pH Meter Signal Conditioning | Digital Scale Load Cell Amplifier |
|---|---|
|
Use Scenario: Amplifying mV-level output from glass pH electrode in handheld or benchtop meter. IC Role / Device Role / Timing Role: Precision DC-coupled non-inverting amplifier with ultra-high input impedance and low offset drift. Use Value: 2 mV max offset and 3 μV/°C drift ensure ±0.02 pH accuracy over 0–50 °C without recalibration. |
Use Scenario: Conditioning Wheatstone bridge output from strain-gauge load cell in portable weighing scale. IC Role / Device Role / Timing Role: Instrumentation-grade differential amplifier with rail-to-rail output driving 16-bit sigma-delta ADC. Use Value: 85 dB CMRR rejects bridge common-mode noise; 20 μA quiescent current extends AA-battery life to >6 months. |
| Automotive Cabin Air Quality Sensor | Smoke Detector CO Sensor Interface |
|
Use Scenario: Amplifying low-current output from NDIR CO₂ sensor in HVAC control module. IC Role / Device Role / Timing Role: Transimpedance amplifier with 1 pA input bias to preserve nanoamp-level photocurrent fidelity. Use Value: Enables detection of 400–2000 ppm CO₂ with <±50 ppm repeatability using single 3.3 V rail and no external biasing. |
Use Scenario: Signal conditioning for electrochemical CO sensor in residential smoke/CO alarm. IC Role / Device Role / Timing Role: Low-power, rail-to-rail buffer isolating sensor from ADC while maintaining linearity. Use Value: 2.7 V minimum supply allows direct connection to CR123A battery; 2 kV HBM ESD rating withstands handling during assembly. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad rail-to-rail micropower op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TS934ID | 6 mV max input offset voltage (vs. 2 mV for TS934BID); otherwise identical specs and pinout. | Suitable for cost-sensitive industrial sensors where ±0.06% offset error is acceptable. | Select TS934ID when offset budget allows >3× higher error than TS934BID, with identical layout and supply requirements. |
| MCP6004-E/SL | Higher 100 μA supply current per amp; 4.5 mV max offset; only 10 kHz GBW; not AEC-Q100 qualified. | Limited to commercial-temp consumer electronics; insufficient for automotive or precision pH meter use. | Choose MCP6004-E/SL only for non-automotive, non-precision applications where board space is constrained and cost is primary. |
Compared with TS934ID and MCP6004-E/SL, TS934BID uniquely combines automotive qualification, 2 mV offset, and 20 μA quiescent current - making it the sole option for AEC-Q100-compliant, battery-powered precision analog front-ends requiring long-term stability.
Availability
TS934BID is available at Aetrix Electronics and suitable for pH meters, digital scales, automotive cabin air quality monitors, and smoke/CO detectors requiring stable component supply across extended temperature ranges and multi-year production cycles.
Supply support for TS934BID 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, designing and manufacturing analog, microcontroller, power, and sensor solutions for industrial, automotive, and consumer markets.
The TS93x series was developed specifically for ultra-low-power, high-precision analog signal conditioning in battery-operated and automotive sensor interfaces - emphasizing rail-to-rail output, sub-1 pA bias, and extended temperature reliability.
FAQ
What is the maximum operating junction temperature for TS934BID?
The absolute maximum junction temperature is 150 °C, with rated operation from −40 °C to +105 °C ambient. Thermal resistance junction-to-ambient is 103 °C/W in SO-14 package; derating is required above 70 °C ambient if power dissipation exceeds 10 mW per amplifier.
Can TS934BID drive capacitive loads directly?
Yes - it remains stable with up to 50 pF capacitive load at unity gain, as verified by 65° phase margin in the datasheet. For loads >50 pF, a small series resistor (10–50 Ω) between output and capacitance is recommended to maintain stability without degrading bandwidth.
Is TS934BID pin-compatible with TS934ID or TS934AID?
Yes - all TS934 variants (ID, AID, BID) share identical SO-14 pinout, electrical interface, and package dimensions. Only input offset voltage, drift, and certain AC parameters differ; no PCB redesign is needed when upgrading from ID to BID grade.
Does TS934BID require external compensation for unity-gain stability?
No - it is internally compensated for unity-gain stability across its full operating voltage (2.7–10 V) and temperature (−40 to +105 °C) range. The 100 kHz gain-bandwidth product and 65° phase margin are guaranteed without external components.
TS934BID Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 4
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 0.05V/µs
- Gain Bandwidth Product:
- 100 kHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 1 pA
- Voltage - Input Offset:
- 2 mV
- Current - Supply:
- 20µA (x4 Channels)
- Current - Output / Channel:
- 5 mA
- Voltage - Supply Span (Min):
- 2.7 V
- Voltage - Supply Span (Max):
- 10 V
- Operating Temperature:
- -40°C ~ 105°C
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-SO
TS934BID FAQ
1.How can I place an order for TS934BID through Aetrix?
Please submit a Request for Quotation (RFQ) for TS934BID 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 TS934BID reliable?
The price and inventory of TS934BID are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TS934BID is usually 5 days.
3.What payment methods are accepted for TS934BID?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TS934BID transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TS934BID?
TS934BID orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TS934BID 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 TS934BID?
For technical support, including TS934BID datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TS934BID requirements.
6.How does Aetrix verify that TS934BID is sourced from the original manufacturer or authorized distributors?
All TS934BID 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 TS934BID meets industry standards.
7.What is the process for return or replacement of TS934BID?
All TS934BID units undergo pre-shipment inspection (PSI). If there is an issue with TS934BID, 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 TS934BID part is unused and in its original packaging.
Return procedure for TS934BID:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TS934BID Tags
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LM358DT
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