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STMicroelectronics TS934IPT
- Part No.:
- TS934IPT
- Manufacturer:
- STMicroelectronics
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
TS934IPT.pdf
- Description:
- IC OPAMP GP 4 CIRCUIT 14TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,833
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Product details
Overview
TS934IPT from STMicroelectronics is a quad rail-to-rail output micropower operational amplifier in TSSOP-14 package, operating from 2.7 V to 10 V single supply, consuming only 20 μA per amplifier (typ), with 2 mV max input offset voltage (TS934B grade), ultra-low 1 pA input bias current, and CMOS inputs. It targets precision low-power sensor signal conditioning in battery-powered instrumentation such as pH meters and digital scales.
For engineers reviewing the TS934IPT datasheet, TS934IPT pinout, TS934IPT application, or TS934IPT equivalent, key selection criteria include rail-to-rail output swing at 3 V supply (2.9 Vpp into 100 kΩ), input common-mode range extending to VCC− −0.2 V, latch-up immunity (Class A), ESD protection (2 kV HBM), and automotive-grade availability (TS934IYDT variant).
Technical Context
The TS934IPT implements a CMOS-input, micropower op-amp architecture optimized for single-supply operation 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), while the output stage sustains ±1.5 mA sink/source capability into 100 kΩ load at 3 V.
It features 100 kHz gain-bandwidth product and 50 V/ms slew rate under 100 kΩ/50 pF load, with 65° phase margin ensuring stable unity-gain follower operation. Common-mode rejection (85 dB) and supply voltage rejection (85 dB) are specified across −40 °C to +105 °C, supporting industrial and automotive environments.
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. |
| Quiescent Current | 20 μA per amplifier (typ) - supports multi-year battery life in always-on smoke detectors or portable sensors. |
| Input Offset Voltage | 2 mV max (TS934B grade) - ensures ≤0.2% error in 1 V full-scale sensor outputs without trimming. |
| Input Bias Current | 1 pA typ - preserves signal integrity when amplifying high-impedance sources like pH electrodes or piezoelectric sensors. |
| Output Swing | Rail-to-rail, 2.95 V at VOH / 10 mV at VOL (3 V supply, 100 kΩ load) - maximizes ADC input utilization in 3 V systems. |
| Gain-Bandwidth Product | 100 kHz - sufficient for DC–10 kHz sensor signal conditioning (e.g., thermistor, strain gauge, pH electrode). |
| CMRR / PSRR | 85 dB (min) - rejects noise from shared supply rails or ground shifts in compact PCB layouts. |
Pinout & Package
TSSOP-14 package: 5.0 mm × 6.4 mm body, 0.65 mm pitch, 1.2 mm height, RoHS-compliant ECOPACK® grade.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | In1− | Inverting input of amplifier 1 - accepts differential or single-ended signals with 1 pA bias current. |
| 2 | In1+ | Non-inverting input of amplifier 1 - supports high-Z sensor interfaces up to VCC− −0.2 V common-mode range. |
| 3 | Out1 | Amplifier 1 output - rail-to-rail capable, drives 100 kΩ load to within 10 mV of VCC− and 50 mV of VCC+. |
| 4 | VCC− | Negative supply rail (GND for single supply) - must be connected directly to low-impedance ground plane. |
| 5 | In2+ | Non-inverting input of amplifier 2 - electrically isolated from other inputs; shares same bias current spec. |
| 6 | In2− | Inverting input of amplifier 2 - matched offset and CMRR performance with In1±. |
| 7 | Out2 | Amplifier 2 output - independent output stage; no crosstalk with Out1 under 100 kHz operation. |
| 8 | VCC+ | Positive supply rail - accepts 2.7–10 V; decoupling capacitor (100 nF) required within 5 mm. |
| 9 | In3− | Inverting input of amplifier 3 - identical electrical specs to In1−/In2−; supports multi-channel sensing. |
| 10 | In3+ | Non-inverting input of amplifier 3 - maintains 1 pA bias current and 2 mV offset across temperature. |
| 11 | Out3 | Amplifier 3 output - rail-to-rail swing verified at 3 V, 5 V, and 10 V supply conditions. |
| 12 | In4+ | Non-inverting input of amplifier 4 - enables four independent sensor channels on one IC. |
| 13 | In4− | Inverting input of amplifier 4 - matched AC/DC performance to other inputs per datasheet Table 4–5. |
| 14 | Out4 | Amplifier 4 output - fully characterized for stability with 50 pF capacitive load per Figure 13–14. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail output | Delivers >99% of supply rail range at 3 V (2.95 V/10 mV), maximizing dynamic range for 10-bit+ ADCs. |
| Micropower operation | 20 μA per amplifier enables integration of four op-amps in <100 μA total system quiescent current. |
| Ultra-low input bias current | 1 pA typical eliminates voltage errors in >1 GΩ source impedances (e.g., glass pH electrodes). |
| Automotive-grade variants available | TS934IYDT qualified per AEC-Q100 Grade 2 (−40 °C to +105 °C), supporting under-hood sensor modules. |
| Latch-up immunity (Class A) | Withstands 200 mA transient overcurrent without destructive failure - critical for field-serviceable equipment. |
Applications
| pH Meter Signal Conditioning | Digital Scale Load Cell Amplification |
|---|---|
Use Scenario: Amplifying mV-level output from glass pH electrode (high impedance, ~100 MΩ–1 GΩ) into 0–3 V range for 12-bit ADC. IC Role / Device Role / Timing Role: Precision DC-coupled buffer and gain stage with ultra-low bias current and rail-to-rail output. Use Value: 1 pA input bias prevents electrode polarization drift; 2 mV offset limits pH measurement error to <0.05 pH unit at 25 °C. | Use Scenario: Conditioning Wheatstone bridge output (±15 mV full scale) from strain-gauge load cell in battery-powered scale. IC Role / Device Role / Timing Role: Instrumentation amplifier front-end (with external resistors) providing 100× gain and rail-to-rail output swing. Use Value: 20 μA per amplifier extends AA battery life to >2 years in intermittent-use mode; 85 dB CMRR rejects bridge excitation noise. |
| Smoke Detector Sensor Interface | Automotive Cabin Air Quality Monitor |
Use Scenario: Amplifying photoelectric or ionization chamber current (pA–nA range) into measurable voltage for microcontroller ADC. IC Role / Device Role / Timing Role: Transimpedance amplifier with programmable gain, powered continuously from coin cell. Use Value: 1 pA input bias enables stable transimpedance gain up to 10⁹ Ω; 20 μA quiescent current allows 10-year shelf life. | Use Scenario: Signal conditioning for NDIR CO₂ or VOC sensor in automotive HVAC control module. IC Role / Device Role / Timing Role: Low-drift, rail-to-rail amplifier driving SAR ADC in -40 °C to +105 °C environment. Use Value: TS934IYDT variant meets AEC-Q100 requirements; 2 mV max offset ensures <1% gas concentration error over lifetime. |
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 65 μA supply current; 3 mV max offset; 1 MHz GBW; SO-14 only. | Less suitable for multi-year battery life; better for higher-speed sensor filtering (>10 kHz). | Select when bandwidth >100 kHz is required and power budget allows >3× higher current. |
| MCP6004-E/ST | 1 μA supply current (lower); 4.5 mV max offset; 1 kHz GBW; SOT-23-5 and SO-14 packages. | Better for ultra-low-power standby; insufficient for pH meter accuracy or fast load-cell response. | Select for sub-μA sleep modes where offset and bandwidth are secondary to quiescent current. |
Compared with LMV334IDR and MCP6004-E/ST, TS934IPT uniquely balances 20 μA quiescent current, 2 mV offset, and 100 kHz bandwidth in TSSOP-14 - making it optimal for precision, long-life, medium-speed sensor systems where space and thermal profile matter.
Availability
TS934IPT is available at Aetrix Electronics and suitable for battery-powered instrumentation, portable communication systems, and automotive cabin air quality monitors requiring stable component supply across extended temperature ranges.
Supply support for TS934IPT 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, precision analog signal conditioning in resource-constrained embedded systems - emphasizing rail-to-rail operation, micropower consumption, and robustness across industrial temperature ranges.
FAQ
What is the maximum operating temperature for TS934IPT?
The TS934IPT is rated for operation from −40 °C to +105 °C ambient temperature, validated per datasheet Table 3. This range covers industrial and extended-temperature automotive cabin applications. The device's thermal resistance (RthJA) is 100 °C/W in TSSOP-14, requiring ≤20 mW total dissipation to stay within junction limit at +105 °C ambient.
Does TS934IPT support dual-supply operation?
Yes - although optimized for single-supply use, TS934IPT supports dual supplies with VCC+ and VCC− pins accepting symmetric or asymmetric voltages, provided total supply does not exceed 12 V (absolute max) and common-mode input range (VCC− −0.2 V to VCC+ −1.5 V) is respected. Ground-referenced designs are most common.
Can TS934IPT drive capacitive loads directly?
TS934IPT is stable with up to 50 pF capacitive load per amplifier, as confirmed by phase margin (65°) and gain/phase plots in Figures 13–14. For >50 pF (e.g., long traces or ADC input caps), a series resistor (10–100 Ω) between output and load is recommended to maintain stability without degrading DC accuracy.
Is there a lead-free and RoHS-compliant version of TS934IPT?
Yes - TS934IPT is manufactured in ST's ECOPACK®-compliant TSSOP-14 package, meeting RoHS Directive 2011/65/EU and REACH SVHC requirements. The "P" in "IPT" denotes lead-free finish; full compliance documentation is available via ST's quality portal using order code TS934IPT.
TS934IPT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- 14-TSSOP (0.173", 4.40mm 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-TSSOP
TS934IPT FAQ
1.How can I place an order for TS934IPT through Aetrix?
Please submit a Request for Quotation (RFQ) for TS934IPT 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 TS934IPT reliable?
The price and inventory of TS934IPT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TS934IPT is usually 5 days.
3.What payment methods are accepted for TS934IPT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TS934IPT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TS934IPT?
TS934IPT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TS934IPT 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 TS934IPT?
For technical support, including TS934IPT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TS934IPT requirements.
6.How does Aetrix verify that TS934IPT is sourced from the original manufacturer or authorized distributors?
All TS934IPT 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 TS934IPT meets industry standards.
7.What is the process for return or replacement of TS934IPT?
All TS934IPT units undergo pre-shipment inspection (PSI). If there is an issue with TS934IPT, 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 TS934IPT part is unused and in its original packaging.
Return procedure for TS934IPT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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