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STMicroelectronics TS934IYDT
- Part No.:
- TS934IYDT
- Manufacturer:
- STMicroelectronics
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TS934IYDT.pdf
- Description:
- IC OPAMP GP 4 CIRCUIT 14SO
- Quantity:
- Payment:
- Shipping:
Inventory:1,074
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Product details
Overview
TS934IYDT from STMicroelectronics is a quad rail-to-rail output micropower operational amplifier designed for low-voltage, battery-powered signal conditioning. It operates from 2.7 V to 10 V single supply, consumes only 20 μA per amplifier (typ), delivers 2.95 V output swing at 3 V supply into 100 kΩ, and features ultra-low input bias current (1 pA typ) and automotive-grade qualification (AEC-Q100). It is used in precision sensor front-ends for automotive cabin monitoring systems.
For engineers reviewing the TS934IYDT datasheet, TS934IYDT pinout, TS934IYDT application, or TS934IYDT equivalent, this page provides verified technical context, package mapping to SO-14, rail-to-rail output behavior under light load, offset voltage ≤2 mV (TS934B grade), and design-meaningful specifications for low-power analog signal chain selection.
Technical Context
The TS934IYDT implements four independent CMOS-input op-amps in a single SO-14 package, each with rail-to-rail output stage enabling full dynamic range utilization down to 2.7 V supply. Its input common-mode range extends from VCC− −0.2 V to VCC+ −1.5 V, supporting ground-referenced sensing without level-shifting.
It achieves 100 kHz gain-bandwidth product and 50 V/ms slew rate while maintaining 65° phase margin with 50 pF capacitive load, ensuring stable unity-gain follower operation in high-impedance sensor interfaces. Input offset drift is 3 μV/°C, supporting accurate DC-coupled measurements across −40 °C to +105 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 2.7 V to 10 V single supply - enables direct integration with Li-ion, 3.3 V, or 5 V rails without regulators. |
| Quiescent Current | 20 μA per amplifier (typ) - supports >1-year battery life in always-on smoke detectors or tire pressure sensors. |
| Input Bias Current | 1 pA (typ) - preserves signal integrity in pH electrode and piezoresistive sensor interfaces with >1 GΩ source impedance. |
| Output Swing | 2.95 V at VCC = 3 V, RL = 100 kΩ - delivers >98% of supply rail, maximizing ADC input utilization in 10-bit systems. |
| Input Offset Voltage | 2 mV max (TS934B grade) - ensures ≤0.2% full-scale error in 1 V reference-based digital scale front-ends. |
| CMRR / PSRR | 85 dB (min) - rejects noise from shared power rails and common-mode interference in automotive body control modules. |
| Gain-Bandwidth | 100 kHz - sufficient for anti-aliasing filtering and DC-stable amplification of thermistor, RTD, or strain gauge signals. |
Pinout & Package
TS934IYDT is housed in an SO-14 (Small Outline, 14-pin) package with 1.27 mm pitch, 8.55–8.75 mm length, and 3.80–4.00 mm width. It meets ECOPACK® environmental compliance standards and is qualified for automotive applications per AEC-Q100.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | In1− | Inverting input of amplifier 1 - accepts differential or single-ended feedback configurations. |
| 2 | In1+ | Non-inverting input of amplifier 1 - high-impedance CMOS node compatible with passive sensor bridges. |
| 3 | Out1 | Output of amplifier 1 - rail-to-rail capable, drives 100 kΩ loads to within 50 mV of VCC− and 10 mV of VCC+. |
| 4 | VCC− | Negative supply terminal - connects to system ground in single-supply operation. |
| 5 | In2+ | Non-inverting input of amplifier 2 - electrically isolated from other inputs; supports independent sensor channels. |
| 6 | In2− | Inverting input of amplifier 2 - matched to Pin 1 for consistent layout and noise rejection. |
| 7 | Out2 | Output of amplifier 2 - identical AC/DC performance to Out1; enables dual-channel signal conditioning. |
| 8 | VCC+ | Positive supply terminal - accepts 2.7–10 V; internal ESD protection rated to 2 kV HBM. |
| 9 | In3− | Inverting input of amplifier 3 - supports third sensor channel with same bias and offset specs as Amp1/Amp2. |
| 10 | In3+ | Non-inverting input of amplifier 3 - pin-compatible routing with In1+/In2+ for scalable PCB layout. |
| 11 | Out3 | Output of amplifier 3 - rail-to-rail output stage optimized for low quiescent current and stability. |
| 12 | In4+ | Non-inverting input of amplifier 4 - completes quad configuration; enables simultaneous 4-sensor readout (e.g., 4-quadrant photodiode). |
| 13 | In4− | Inverting input of amplifier 4 - matched input pair with In3−; maintains channel-to-channel gain tracking. |
| 14 | Out4 | Output of amplifier 4 - fully specified for 20 μA ICC, 2 mV Vio, and 100 kHz GBW under all operating conditions. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail output | Swings within 10 mV of VCC+ and 50 mV of VCC− at 3 V supply - maximizes dynamic range for 10-bit ADCs without external level-shifting. |
| Micropower operation | 20 μA per amplifier (typ) - enables continuous monitoring in automotive door module ECUs with <10 μA total standby budget. |
| Ultra-low input bias current | 1 pA (typ) - eliminates voltage error in high-Z pH probe circuits where 100 MΩ source resistance would cause >100 mV offset with μA-level bias. |
| Automotive qualification | AEC-Q100 Grade 2 (−40 °C to +105 °C) - certified for engine bay and cabin electronics without derating or additional qualification testing. |
| CMOS input stage | Input common-mode range from VCC− −0.2 V to VCC+ −1.5 V - supports direct connection to grounded thermistors and bridge sensors. |
Applications
| Automotive Cabin Sensors | pH Monitoring Systems |
|---|---|
|
Use Scenario: Signal conditioning for CO₂, humidity, and volatile organic compound (VOC) sensors in HVAC control units. IC Role / Device Role / Timing Role: Quad amplifier configures as 4-channel transimpedance and buffer stages for electrochemical sensor outputs. Use Value: 20 μA per channel enables always-on air quality monitoring with <100 μA total system current, extending vehicle battery life during parking mode. |
Use Scenario: High-impedance electrode interface in portable handheld pH meters. IC Role / Device Role / Timing Role: First-stage buffer isolating glass electrode (≥1 GΩ impedance) from downstream instrumentation amplifier. Use Value: 1 pA input bias current prevents >100 mV measurement error at 25 °C, meeting ASTM E70-22 accuracy requirements for field calibration. |
| Digital Weight Scales | Smoke & Fire Detectors |
|
Use Scenario: Strain gauge bridge amplification in battery-powered kitchen and bathroom scales. IC Role / Device Role / Timing Role: Instrumentation-grade gain stage with matched input pairs (Pins 1/2, 5/6, etc.) minimizing thermal EMF errors. Use Value: 2 mV max input offset ensures ≤0.2% full-scale error over temperature, satisfying Class III metrological accuracy (OIML R76). |
Use Scenario: Photoelectric smoke chamber signal amplification in UL-listed residential alarms. IC Role / Device Role / Timing Role: Low-noise transimpedance amplifier converting photodiode current to voltage for microcontroller ADC sampling. Use Value: 75 nV/√Hz input voltage noise enables reliable detection of sub-100 nA smoke-induced photocurrents at 25 °C ambient. |
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 |
|---|---|---|---|
| TS934IDT | Same die, non-automotive grade (−40 °C to +105 °C industrial temp range); no AEC-Q100 qualification. | Suitable for industrial IoT gateways but not for automotive cabin modules requiring OEM validation. | Select when cost sensitivity outweighs automotive qualification and lifecycle traceability requirements. |
| MCP6004-E/SL | Higher quiescent current (100 μA per amp), wider offset range (4.5 mV max), no AEC-Q100 certification. | Acceptable for consumer-grade portable instruments but fails automotive reliability screening (HTOL, ESD, latch-up). | Choose only for non-automotive prototypes where footprint compatibility (SO-14) is prioritized over power and precision. |
Compared with TS934IDT and MCP6004-E/SL, TS934IYDT uniquely combines AEC-Q100 qualification, 20 μA quiescent current, and 2 mV offset in SO-14 - making it the sole option for production automotive sensor nodes requiring zero derating and full OEM compliance.
Availability
TS934IYDT is available at Aetrix Electronics and suitable for automotive cabin sensors, portable pH meters, digital weight scales, and smoke/fire detectors requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for TS934IYDT 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, MCU, 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-constrained and automotive environments - emphasizing rail-to-rail output, picoampere input bias, and robust ESD/latch-up immunity.
FAQ
What is the maximum capacitive load the TS934IYDT can drive while maintaining stability?
The TS934IYDT is characterized for stable unity-gain operation with up to 50 pF capacitive load, achieving 65° phase margin per amplifier. Driving >50 pF requires external isolation resistor (≥100 Ω) between output and load capacitance to prevent peaking or oscillation - confirmed by Figure 13 and Figure 14 in the official datasheet (Doc ID 6911 Rev 5).
Does TS934IYDT support true rail-to-rail input common-mode range?
No - TS934IYDT features rail-to-rail *output* swing but has a limited input common-mode range of VCC− −0.2 V to VCC+ −1.5 V. This means the inputs cannot accept signals within 1.5 V of VCC+, excluding true rail-to-rail input capability. This is explicitly defined in Table 3 (Vicm specification) and applies across the full −40 °C to +105 °C operating range.
Can TS934IYDT be used in single-supply 2.7 V applications with 100 kΩ load?
Yes - at VCC = 2.7 V, TS934IYDT delivers ≥2.65 V high-level output and ≤100 mV low-level output into 100 kΩ (per Figure 7–10 and Table 4), confirming functional rail-to-rail swing even at minimum supply. Output current capability remains ≥1.5 mA source/sink, sufficient for driving ADC reference buffers or LED drivers in ultra-low-voltage designs.
Is the TS934IYDT pinout compatible with standard quad op-amp footprints like LM324 or TLV2464?
No - TS934IYDT uses a non-standard SO-14 pinout optimized for quad independence: Pins 1–3/5–7/9–11/12–14 serve individual amplifiers, unlike LM324's sequential pin assignment (1=Out1, 2=In1−, 3=In1+, etc.). Direct replacement requires PCB redesign; pin compatibility is confirmed only with other TS93x-series variants (e.g., TS934IDT, TS934AIDT) in SO-14.
TS934IYDT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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:
- 10 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
TS934IYDT FAQ
1.How can I place an order for TS934IYDT through Aetrix?
Please submit a Request for Quotation (RFQ) for TS934IYDT 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 TS934IYDT reliable?
The price and inventory of TS934IYDT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TS934IYDT is usually 5 days.
3.What payment methods are accepted for TS934IYDT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TS934IYDT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TS934IYDT?
TS934IYDT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TS934IYDT 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 TS934IYDT?
For technical support, including TS934IYDT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TS934IYDT requirements.
6.How does Aetrix verify that TS934IYDT is sourced from the original manufacturer or authorized distributors?
All TS934IYDT 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 TS934IYDT meets industry standards.
7.What is the process for return or replacement of TS934IYDT?
All TS934IYDT units undergo pre-shipment inspection (PSI). If there is an issue with TS934IYDT, 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 TS934IYDT part is unused and in its original packaging.
Return procedure for TS934IYDT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TS934IYDT Tags
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LM358DT
STMicroelectronics
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LM358DR
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LM2904DR
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LM358ADR
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MCP6006T-E/OT
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MCP6006UT-E/OT
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