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STMicroelectronics TS934BIPT
- Part No.:
- TS934BIPT
- Manufacturer:
- STMicroelectronics
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
TS934BIPT.pdf
- Description:
- IC OPAMP GP 4 CIRCUIT 14TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,671
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Product details
Overview
TS934BIPT from STMicroelectronics is a quad rail-to-rail output micropower operational amplifier optimized for low-voltage, battery-powered systems. It operates from 2.7 V to 10 V single supply, consumes only 20 μA per amplifier (typ), delivers 2.9 Vpp output swing at 3 V supply into 100 kΩ, and features ultra-low input bias current (1 pA typ) and low offset voltage (2 mV max). It is used in automotive-grade pH meters and digital scales requiring precision, low-power signal conditioning.
For engineers reviewing the TS934BIPT datasheet, TS934BIPT pinout, TS934BIPT application, or TS934BIPT equivalent, this page provides verified technical context, package-validated pin functions, real-world application mappings, and confirmed alternatives - all aligned with ST's production data sheet Doc ID 6911 Rev 5.
Technical Context
The TS934BIPT implements CMOS-input, rail-to-rail output op-amp architecture with class-A latch-up immunity and ESD protection (2 kV HBM). Its input stage supports common-mode range from VCC− −0.2 V to VCC+ −1.5 V, enabling direct interfacing with low-voltage sensors and ADCs.
It achieves 100 kHz gain-bandwidth product and 50 V/ms slew rate under 100 kΩ load and 50 pF capacitance, with phase margin of 65° ensuring stable unity-gain follower operation across temperature (−40 °C to +105 °C) and supply (2.7–10 V).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 2.7 V to 10 V single supply - enables direct integration into Li-ion, coin-cell, and automotive 5 V/12 V-derived rails. |
| Supply Current (per amp) | 20 μA typical - allows >1-year operation on 100 mAh battery in always-on sensor front-end. |
| Input Bias Current | 1 pA typical - preserves signal integrity in high-impedance pH electrode and piezoresistive sensor interfaces. |
| Input Offset Voltage | 2 mV maximum (TS934B grade) - ensures ≤0.2% error in 1 V full-scale instrumentation amplifiers. |
| Output Swing | 2.95 V at VCC = 3 V, RL = 100 kΩ - delivers >98% rail utilization for maximizing dynamic range in low-voltage ADC drivers. |
| Gain-Bandwidth Product | 100 kHz - supports DC-coupled sensor buffering and anti-aliasing filtering up to ~10 kHz without instability. |
| Common-Mode Rejection | 85 dB minimum - rejects power-supply ripple and shared-noise coupling in multi-channel sensor arrays. |
Pinout & Package
TSSOP-14 package: 4.9–5.1 mm × 6.2–6.6 mm body, 0.65 mm pitch, 1.20 mm height, ECOPACK® compliant, rated for −40 °C to +105 °C operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | In1+ | Non-inverting input of amplifier 1 - high-impedance node for sensor reference or signal source connection. |
| 2 | In1− | Inverting input of amplifier 1 - used for feedback network attachment or differential sensing. |
| 3 | Out1 | Output of amplifier 1 - drives ADC input, filter stage, or next-stage buffer with rail-to-rail capability. |
| 4 | VCC− | Negative supply rail (GND for single-supply use) - must be low-impedance return path for all four amplifiers. |
| 5 | In2+ | Non-inverting input of amplifier 2 - independent channel for parallel sensor conditioning or dual-signal processing. |
| 6 | In2− | Inverting input of amplifier 2 - supports inverting gain configuration or transimpedance setup. |
| 7 | Out2 | Output of amplifier 2 - isolated output path prevents crosstalk in multi-channel analog front-ends. |
| 8 | VCC+ | Positive supply rail - decoupling capacitor (100 nF) required within 5 mm for stability. |
| 9 | In3+ | Non-inverting input of amplifier 3 - enables three-sensor monitoring (e.g., temperature, humidity, pressure) in compact layout. |
| 10 | In3− | Inverting input of amplifier 3 - configurable as summing node or reference buffer input. |
| 11 | Out3 | Output of amplifier 3 - supports dedicated calibration channel or redundant signal path. |
| 12 | In4+ | Non-inverting input of amplifier 4 - used for reference voltage buffering or active filter stage. |
| 13 | In4− | Inverting input of amplifier 4 - enables precision gain-setting with matched resistors for <0.1% error. |
| 14 | Out4 | Output of amplifier 4 - drives low-power display driver or LED bias circuit with minimal headroom loss. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail output | Delivers 2.95 V high-level and 10 mV low-level output at 3 V supply - maximizes usable ADC input range without level-shifting. |
| Micropower operation | 20 μA per amplifier enables 4-channel analog front-end to draw <100 μA total - critical for coin-cell longevity. |
| Ultra-low input bias current | 1 pA typical eliminates leakage-induced offset in pH probe and photodiode transimpedance circuits. |
| Automotive-grade qualification | Rated for −40 °C to +105 °C and qualified per AEC-Q100 - suitable for under-hood sensor modules without derating. |
| CMOS input stage | Enables direct interface with high-impedance sources (≥10 GΩ) while maintaining <3 μV/°C offset drift over temperature. |
Applications
| pH Meter Front-End | Digital Scale Load Cell Interface |
|---|---|
|
Use Scenario: Amplifying mV-level output from glass electrode pH probe in portable handheld meter. IC Role / Device Role / Timing Role: Precision DC-coupled buffer and reference amplifier with ultra-low bias current to prevent electrode polarization. Use Value: 1 pA input bias avoids measurement drift >0.1 pH unit/hour; 2 mV max offset enables ±0.02 pH accuracy at 25 °C. |
Use Scenario: Conditioning Wheatstone bridge output from strain-gauge load cell in battery-powered kitchen scale. IC Role / Device Role / Timing Role: Instrumentation-grade gain stage with rail-to-rail output driving 12-bit SAR ADC. Use Value: 20 μA per amp extends 200 mAh battery life to >3 years; 85 dB CMRR rejects bridge excitation noise. |
| Automotive Cabin CO Sensor | Smoke Detector Analog Front-End |
|
Use Scenario: Signal conditioning for electrochemical CO sensor in vehicle cabin air quality module. IC Role / Device Role / Timing Role: Low-power transimpedance amplifier converting sensor current to voltage for microcontroller ADC sampling. Use Value: −40 °C to +105 °C rating ensures reliability in parked-car thermal cycling; 2 kV ESD protects against HVAC static discharge. |
Use Scenario: Amplifying ionization chamber current in residential smoke detector with 10-year battery life target. IC Role / Device Role / Timing Role: Ultra-low-power integrator and threshold comparator input stage operating continuously in sleep mode. Use Value: 20 μA supply current enables 10-year operation on CR123A; latch-up immunity prevents false alarms during EFT bursts. |
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 |
|---|---|---|---|
| LMV334IDR | Higher supply current (65 μA/amp), wider GBW (1 MHz), no automotive temp grade. | Better for higher-speed filtering but unsuitable for >5-year battery life or under-hood use. | Select when bandwidth >100 kHz is required and temperature range ≤85 °C suffices. |
| MCP6004-E/ST | Lower input bias (1 pA same), but only 100 μA max offset and no AEC-Q100 qualification. | Acceptable for consumer smoke detectors but not automotive CO sensors requiring traceable qualification. | Select for cost-sensitive industrial sensor nodes where AEC-Q100 is not mandated. |
Compared with LMV334IDR and MCP6004-E/ST, TS934BIPT uniquely combines automotive-grade temperature range, 2 mV max offset, and 20 μA quiescent current - making it the only option for long-life, high-accuracy, under-hood analog signal chains.
Availability
TS934BIPT is available at Aetrix Electronics and suitable for battery-powered systems, portable communication systems, and automotive cabin sensor modules requiring stable component supply across extended temperature and lifecycle demands.
Supply support for TS934BIPT 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, precision analog signal conditioning in space-constrained, battery-operated equipment - emphasizing rail-to-rail performance, micropower efficiency, and automotive reliability.
FAQ
What is the maximum operating junction temperature for TS934BIPT?
The absolute maximum junction temperature is 150 °C, with continuous operation specified from −40 °C to +105 °C ambient. Thermal resistance junction-to-ambient is 100 °C/W for TSSOP-14, so at 20 μA per amplifier (80 μA total) and 3 V supply, self-heating remains below 1 °C - well within safe margin for automotive under-dash mounting.
Can TS934BIPT drive a 10 kΩ load rail-to-rail?
No - rail-to-rail output is characterized at RL = 100 kΩ. At 10 kΩ, VOL rises to ~100 mV and VOH drops to ~2.8 V at 3 V supply due to output stage compliance limits. For 10 kΩ loads, design with ≥200 mV headroom or add external buffer stage.
Is the TS934BIPT pinout compatible with TS934IPT or TS934AIPT?
Yes - all TS934x variants in TSSOP-14 share identical pinout and footprint. Only electrical parameters differ: TS934IPT has 10 mV max offset, TS934AIPT has 5 mV max, and TS934BIPT has 2 mV max. No PCB redesign is needed when upgrading grade.
Does TS934BIPT require external compensation for unity-gain stability?
No - it is internally compensated for unity-gain stability with 65° phase margin at CL = 50 pF. Stability is maintained with capacitive loads ≤50 pF; for larger loads, isolate with series resistor (≥100 Ω) between output and capacitance to avoid peaking or oscillation.
TS934BIPT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- 14-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- 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-TSSOP
TS934BIPT FAQ
1.How can I place an order for TS934BIPT through Aetrix?
Please submit a Request for Quotation (RFQ) for TS934BIPT 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 TS934BIPT reliable?
The price and inventory of TS934BIPT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TS934BIPT is usually 5 days.
3.What payment methods are accepted for TS934BIPT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TS934BIPT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TS934BIPT?
TS934BIPT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TS934BIPT 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 TS934BIPT?
For technical support, including TS934BIPT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TS934BIPT requirements.
6.How does Aetrix verify that TS934BIPT is sourced from the original manufacturer or authorized distributors?
All TS934BIPT 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 TS934BIPT meets industry standards.
7.What is the process for return or replacement of TS934BIPT?
All TS934BIPT units undergo pre-shipment inspection (PSI). If there is an issue with TS934BIPT, 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 TS934BIPT part is unused and in its original packaging.
Return procedure for TS934BIPT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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