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STMicroelectronics TS934ID
- Part No.:
- TS934ID
- Manufacturer:
- STMicroelectronics
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TS934ID.pdf
- Description:
- IC OPAMP GP 4 CIRCUIT 14SO
- Quantity:
- Payment:
- Shipping:
Inventory:3,908
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Product details
Overview
TS934ID from STMicroelectronics is a quad rail-to-rail output micropower operational amplifier in SO-14 package, operating from 2.7 V to 10 V single supply, consuming only 20 μA per amplifier, with 2 mV max input offset voltage (TS934B grade), ultra-low 1 pA input bias current, and CMOS inputs. It targets low-power sensor signal conditioning in battery-powered instrumentation such as pH meters and digital scales.
For engineers reviewing the TS934ID datasheet, TS934ID pinout, TS934ID application, or TS934ID equivalent, key selection criteria include micropower operation at 3 V, rail-to-rail output swing (2.95 V at 3 V supply), input bias current ≤1 pA, common-mode range extending to VCC− −0.2 V, and automotive-grade availability (TS934IYDT variant).
Technical Context
The TS934ID implements a CMOS-input, micropower op-amp architecture optimized for single-supply operation down to 2.7 V, with rail-to-rail output stage enabling full dynamic range utilization in low-voltage systems. Its input stage delivers 1 pA typical bias current and 2 mV max offset (B-grade), supporting high-impedance sensor interfacing without significant error contribution.
Designed for stability with capacitive loads up to 50 pF, it achieves 100 kHz gain-bandwidth product and 50 V/ms slew rate while maintaining 65° phase margin. The device operates across −40 °C to +105 °C, meeting industrial and automotive temperature requirements when specified in IYDT variants.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 2.7 V to 10 V single supply - enables direct use with Li-ion, alkaline, or regulated 3.3 V/5 V rails without level-shifting. |
| Supply Current (per amp) | 20 μA typical - supports multi-year battery life in always-on portable sensors and smoke detectors. |
| Input Offset Voltage (max) | 2 mV (TS934B) - ensures ≤0.2% gain error in 1 V full-scale sensor amplification without trimming. |
| Input Bias Current | 1 pA typical - preserves signal integrity when interfacing >1 GΩ pH electrode or piezoresistive sensors. |
| Output Swing | 2.95 V at 3 V supply (RL = 100 kΩ) - delivers >98% of rail-to-rail dynamic range for ADC input optimization. |
| Gain-Bandwidth Product | 100 kHz - sufficient for DC–10 kHz sensor signal conditioning (e.g., thermocouple, strain gauge) with stable unity-gain configuration. |
| Common-Mode Input Range | VCC− −0.2 V to VCC+ −1.5 V - allows ground-referenced input signals even at 3 V supply. |
Pinout & Package
TS934ID is housed in a 14-pin SOIC (SO-14) package with 1.27 mm pitch, 8.55–8.75 mm body width, and 1.35–1.75 mm height, compliant with ECOPACK® environmental standards.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | In1− | Inverting input of amplifier 1 - high-impedance CMOS node for differential sensing. |
| 2 | In1+ | Non-inverting input of amplifier 1 - accepts ground-referenced or biased sensor signals. |
| 3 | Out1 | Amplifier 1 output - rail-to-rail capable, drives 100 kΩ load to within 10 mV of rails. |
| 4 | VCC− | Negative supply rail (GND in single-supply config) - shared return for all four amplifiers. |
| 5 | In2+ | Non-inverting input of amplifier 2 - independent channel for multi-sensor monitoring. |
| 6 | In2− | Inverting input of amplifier 2 - supports transducer bridge or current-sense configurations. |
| 7 | Out2 | Amplifier 2 output - identical performance to Out1; enables dual-channel signal processing. |
| 8 | VCC+ | Positive supply rail - accepts 2.7–10 V; powers all four amplifiers simultaneously. |
| 9 | In3− | Inverting input of amplifier 3 - third independent channel for auxiliary sensor path. |
| 10 | In3+ | Non-inverting input of amplifier 3 - configurable for reference-based or ratiometric measurement. |
| 11 | Out3 | Amplifier 3 output - rail-to-rail swing preserves resolution in low-voltage data acquisition. |
| 12 | In4+ | Non-inverting input of amplifier 4 - fourth channel for system diagnostics or redundancy. |
| 13 | In4− | Inverting input of amplifier 4 - supports active filtering or comparator hysteresis feedback. |
| 14 | Out4 | Amplifier 4 output - fully decoupled from other channels; no crosstalk above −85 dB. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail output | Delivers 2.95 V output at 3 V supply into 100 kΩ - maximizes usable ADC input range without external level-shifting. |
| Micropower operation | 20 μA per amplifier - reduces total quiescent current to 80 μA for quad configuration, critical for coin-cell longevity. |
| Ultra-low input bias current | 1 pA typical - eliminates voltage error across high-impedance sources (e.g., glass pH electrodes >100 MΩ). |
| Extended common-mode range | VCC− −0.2 V input capability - enables direct connection of ground-referenced transducers without input biasing resistors. |
| Automotive qualification option | TS934IYDT variant qualified to AEC-Q100 Grade 2 (−40 °C to +105 °C) - supports under-hood sensor modules. |
Applications
| pH Meter Signal Conditioning | Digital Scale Load Cell Amplification |
|---|---|
|
Use Scenario: Amplifying mV-level output from glass pH electrode in handheld or benchtop meter. IC Role / Device Role / Timing Role: Quad op-amp configured as precision instrumentation amplifier (two amps), reference buffer (one amp), and comparator (one amp). Use Value: 1 pA input bias prevents electrode polarization; 2 mV offset ensures ±0.02 pH accuracy without calibration drift. |
Use Scenario: Conditioning Wheatstone bridge output from strain-gauge load cell in battery-powered scale. IC Role / Device Role / Timing Role: First-stage low-noise amplifier (gain ≥100) followed by rail-to-rail output driver for 12-bit SAR ADC input. Use Value: 20 μA per amp extends CR2032 battery life beyond 2 years; rail-to-rail swing uses full 3.3 V ADC range. |
| Smoke Detector CO Sensor Interface | Automotive Cabin Air Quality Monitor |
|
Use Scenario: Amplifying low-current output from electrochemical CO sensor in residential smoke alarm. IC Role / Device Role / Timing Role: Transimpedance amplifier converting 10 nA–100 nA sensor current to measurable voltage. Use Value: 1 pA input bias avoids loading sensor output; 2.7 V minimum supply enables direct use with 3 V lithium primary battery. |
Use Scenario: Signal conditioning for NDIR CO₂ sensor in automotive HVAC control module. IC Role / Device Role / Timing Role: Quad configuration used for sensor preamp, temperature compensation, reference buffer, and fault-detection comparator. Use Value: TS934IYDT variant meets AEC-Q100 Grade 2; 105 °C operation ensures reliability near engine bay heat sources. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad micropower op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV2464AIDR | Higher supply current (550 μA/amp), wider GBW (6.4 MHz), but 250 pA input bias - 250× higher than TS934ID. | Better for AC-coupled, higher-frequency sensor interfaces; unsuitable for ultra-high-Z DC sensors like pH electrodes. | Select TLV2464AIDR only when bandwidth >100 kHz is required and power budget allows >2 mA total quiescent current. |
| LPV521MG/NOPB | Lower supply current (320 nA/amp), but single-channel only and 10 mV offset - 5× worse than TS934IDB grade. | Optimized for ultra-long-life single-sensor nodes (e.g., wireless IoT); lacks quad integration and rail-to-rail output swing. | Choose LPV521MG/NOPB for extreme battery life in single-channel designs where offset tolerance >5 mV is acceptable. |
Compared with TLV2464AIDR and LPV521MG/NOPB, TS934ID uniquely balances 20 μA quiescent current, 1 pA input bias, quad integration, and rail-to-rail output - making it optimal for space-constrained, multi-sensor, battery-powered instrumentation requiring DC precision.
Availability
TS934ID is available at Aetrix Electronics and suitable for pH meters, digital scales, smoke detectors, and automotive cabin air quality monitors requiring stable component supply across industrial and automotive temperature ranges.
Supply support for TS934ID 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 portable instrumentation and safety-critical sensor systems.
FAQ
What is the maximum operating temperature for TS934ID?
The TS934ID is rated for operation from −40 °C to +105 °C ambient temperature, as confirmed in Table 3 of the official datasheet (Doc ID 6911 Rev 5). This range satisfies industrial and extended-temperature commercial applications, and matches the automotive-grade TS934IYDT variant's thermal specification.
Does TS934ID support true rail-to-rail input?
No - TS934ID features rail-to-rail *output* only. Its common-mode input voltage range extends from VCC− −0.2 V to VCC+ −1.5 V (Table 3), meaning the inputs cannot accept signals at the positive rail. However, the −0.2 V lower limit allows ground-referenced inputs in single-supply configurations.
Can TS934ID drive capacitive loads?
Yes - the TS934ID is characterized for stability with up to 50 pF capacitive load (see Figure 13–14 in datasheet), achieving 65° phase margin. For loads exceeding 50 pF, external isolation resistance (e.g., 100 Ω in series with output) is recommended to prevent peaking or oscillation.
Is there a lead-free and RoHS-compliant version of TS934ID?
Yes - TS934ID is manufactured in ECOPACK®-compliant SO-14 packaging, meeting RoHS Directive 2011/65/EU and REACH regulations. The "ID" suffix denotes standard industrial-grade, lead-free, halogen-free SO-14 packaging per STMicroelectronics' ECOPACK® specifications.
TS934ID 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:
- 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
TS934ID FAQ
1.How can I place an order for TS934ID through Aetrix?
Please submit a Request for Quotation (RFQ) for TS934ID 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 TS934ID reliable?
The price and inventory of TS934ID are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TS934ID is usually 5 days.
3.What payment methods are accepted for TS934ID?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TS934ID transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TS934ID?
TS934ID orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TS934ID 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 TS934ID?
For technical support, including TS934ID datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TS934ID requirements.
6.How does Aetrix verify that TS934ID is sourced from the original manufacturer or authorized distributors?
All TS934ID 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 TS934ID meets industry standards.
7.What is the process for return or replacement of TS934ID?
All TS934ID units undergo pre-shipment inspection (PSI). If there is an issue with TS934ID, 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 TS934ID part is unused and in its original packaging.
Return procedure for TS934ID:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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