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STMicroelectronics TS932IN
- Part No.:
- TS932IN
- Manufacturer:
- STMicroelectronics
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
TS932IN.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8MINI DIP
- Quantity:
- Payment:
- Shipping:
Inventory:1,065
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Product details
Overview
TS932IN from STMicroelectronics is a dual 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 2.9 Vpp output swing at 3 V supply into 100 kΩ, and features ultra-low input bias current (1 pA) and CMOS inputs. It is used in portable pH meters and digital scales where precision, low power, and rail-to-rail output drive are critical.
For engineers reviewing the TS932IN datasheet, TS932IN pinout, TS932IN application, or TS932IN equivalent, key selection criteria include micropower consumption under 30 μA, rail-to-rail output swing at 3 V, input offset voltage ≤6 mV (B-grade), common-mode input range extending to VCC− −0.2 V, and SO-8 package compatibility with space-constrained PCB layouts.
Technical Context
The TS932IN implements a CMOS-input, rail-to-rail output op-amp architecture optimized for micropower operation across industrial temperature range (−40 °C to +105 °C). Its input stage uses complementary MOSFETs to achieve 1 pA typical input bias current and 2 mV max input offset voltage (TS932B grade), while the output stage supports full swing within 10 mV of each rail at 100 kΩ load.
It achieves 100 kHz gain-bandwidth product and 50 V/ms slew rate with stable phase margin (65°) under 50 pF capacitive load, enabling use in DC-coupled sensor interfaces and low-frequency active filters without external compensation. Supply voltage rejection ratio (SVR) and common-mode rejection ratio (CMR) both reach 85 dB in B-grade variants, supporting high-accuracy measurements in noisy environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.7 V to 10 V single supply - enables direct integration into 3 V and 5 V battery or regulated systems without level-shifting. |
| Supply Current (per amp) | 20 μA typ. at 25 °C - extends battery life in coin-cell or AA-powered devices beyond 1 year in continuous sensing mode. |
| Input Offset Voltage (max) | 2 mV (TS932B 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 piezoresistive sensors. |
| Output Swing (RL = 100 kΩ) | 2.95 V at VCC = 3 V - delivers >98% of supply rail, maximizing dynamic range in low-voltage ADC front-ends. |
| Gain-Bandwidth Product | 100 kHz - supports stable closed-loop gain up to 100× at DC–1 kHz for precision transducer signal conditioning. |
| Common-Mode Input Range | VCC− −0.2 V to VCC+ −1.5 V - accepts ground-referenced inputs even with single-supply configuration. |
Pinout & Package
TS932IN is supplied in an 8-pin SOIC (SO-8) package with 1.27 mm pitch, body dimensions 4.9 mm × 6.0 mm × 1.75 mm, and ECOPACK® RoHS-compliant finish. Pin numbering follows standard top-view orientation with Pin 1 marked by notch or dot.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Inverting input of Amplifier A | Accepts differential input signal referenced to common-mode range; high-impedance node requiring guard trace in sensitive layouts. |
| 2 | Non-inverting input of Amplifier A | High-impedance reference point for sensor bridges or thermistor dividers; matched to Pin 1 for optimal CMRR. |
| 3 | Output of Amplifier A | Rail-to-rail capable output driving loads down to 100 kΩ; requires local decoupling if feeding ADC sample capacitor. |
| 4 | VCC− (Ground) | Power return for both amplifiers; must be connected directly to low-impedance ground plane to minimize PSRR degradation. |
| 5 | Non-inverting input of Amplifier B | Independent high-Z input for second sensor channel; electrically isolated from Amp A inputs except via shared VCC−. |
| 6 | Inverting input of Amplifier B | Differential partner to Pin 5; matching and layout symmetry critical for dual-channel common-mode rejection. |
| 7 | Output of Amplifier B | Second rail-to-rail output; usable for dual-sensor systems or as buffer for reference voltage generation. |
| 8 | VCC+ | Positive supply rail (2.7–10 V); requires 100 nF ceramic decoupling capacitor placed ≤2 mm from Pin 8. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail output swing | Delivers ≥98% of VCC− to VCC+ range at 100 kΩ load, preserving full ADC input range in 3 V systems. |
| Micropower operation (20 μA/amp) | Enables multi-year operation on CR2032 coin cells in always-on sensor nodes without duty cycling. |
| Ultra-low input bias current (1 pA) | Minimizes voltage error across high-impedance pH probe electrodes (>1 GΩ) and photodiode feedback networks. |
| CMOS input stage | Provides symmetrical input impedance (>10¹² Ω) and negligible current-induced offset drift over temperature. |
| Automotive-grade option (TS932IYDT) | Qualified to AEC-Q100 Grade 2 (−40 °C to +105 °C), supporting under-hood and dashboard instrumentation. |
Applications
| Portable pH Meters | Digital Weight Scales |
|---|---|
|
Use Scenario: Amplifying mV-level output from glass electrode pH probes in handheld field instruments. IC Role / Device Role / Timing Role: Dual-channel precision DC amplifier with one channel for probe signal and one for reference buffer. Use Value: 1 pA input bias prevents electrode polarization error; rail-to-rail output maximizes resolution of 12-bit ADC sampling at 3 V. |
Use Scenario: Conditioning Wheatstone bridge signals from strain-gauge load cells in battery-powered kitchen or medical scales. IC Role / Device Role / Timing Role: Instrumentation-grade dual op-amp providing gain and offset adjustment before sigma-delta ADC. Use Value: 2 mV max offset (B-grade) reduces calibration burden; 20 μA quiescent current enables >2-year battery life on two AAA cells. |
| Smoke Detector Signal Chain | Automotive Cabin Air Quality Sensor |
|
Use Scenario: Amplifying low-level current from photoelectric smoke chamber detectors in residential alarm panels. IC Role / Device Role / Timing Role: Transimpedance amplifier (TIA) front-end with ultra-low input current noise for weak optical signals. Use Value: 1 pA bias current avoids baseline shift during long-term standby; 85 dB CMRR rejects EMI from AC-powered alarm siren circuits. |
Use Scenario: Signal conditioning for NDIR CO₂ or VOC sensors in automotive HVAC control modules. IC Role / Device Role / Timing Role: Dual op-amp implementing differential amplification and reference buffering in AEC-Q100 qualified designs. Use Value: TS932IYDT variant meets automotive temperature and reliability requirements; 105 °C operating limit supports under-dash mounting. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual micropower rail-to-rail op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LMV358IDR | Higher supply current (80 μA/amp), wider GBW (1 MHz), no B-grade offset spec (7 mV max). | Better for higher-speed filtering but less suitable for multi-year battery life or sub-mV offset-critical pH sensing. | Select when bandwidth >100 kHz is required and power budget allows ≥3× higher ICC. |
| MCP6022-E/SN | Lower input bias (150 fA), tighter offset (1.5 mV max), but only rated to +85 °C (not automotive). | Superior for lab-grade instrumentation, but not qualified for automotive or extended industrial temperature operation. | Choose for maximum DC precision in non-automotive, temperature-controlled environments. |
Compared with LMV358IDR and MCP6022-E/SN, TS932IN uniquely balances ultra-low power (20 μA), guaranteed 2 mV max offset (B-grade), and AEC-Q100 qualification - making it optimal for cost-sensitive, long-life, automotive-adjacent sensor nodes where 100 kHz bandwidth suffices.
Availability
TS932IN is available at Aetrix Electronics and suitable for portable pH meters, digital weight scales, smoke detector signal chains, and automotive cabin air quality sensors requiring stable component supply across multi-year production cycles.
Supply support for TS932IN 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 ICs for industrial, automotive, and consumer markets.
The TS93x series was developed specifically for ultra-low-power, rail-to-rail signal conditioning in battery-operated measurement equipment - emphasizing precision, longevity, and robustness in harsh ambient conditions.
FAQ
Is TS932IN pin-compatible with TS932ID or TS932IDT?
Yes. TS932IN is a manufacturer-marked variant of the same SO-8 packaged dual op-amp as TS932ID (tube) and TS932IDT (tape-and-reel). All share identical pinout, electrical specs, and thermal characteristics; only packaging and reel marking differ per order code.
What is the maximum capacitive load the TS932IN can drive without instability?
The TS932IN maintains 65° phase margin with up to 50 pF capacitive load, as verified in Figure 13 of the datasheet. Driving >50 pF requires isolation resistor (≥100 Ω) between output and load capacitance to prevent peaking or oscillation in unity-gain configurations.
Does TS932IN support true rail-to-rail input?
No. TS932IN features rail-to-rail *output* only. Its common-mode input range extends from VCC− −0.2 V to VCC+ −1.5 V - meaning it accepts inputs down to 0.2 V below ground but not up to the positive rail. For true R-R input, consider TS934B variants with enhanced input stage.
Can TS932IN operate from a 1.8 V supply?
No. The absolute minimum supply voltage is 2.7 V, as specified in Table 3 (Operating Conditions). Operation below 2.7 V risks undefined behavior, reduced output swing, increased offset, and potential failure to meet rail-to-rail performance or 20 μA current spec.
TS932IN Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- 8-DIP (0.300", 7.62mm)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 2
- 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 (x2 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:
- Through Hole
- Supplier Device Package:
- 8-Mini DIP
TS932IN FAQ
1.How can I place an order for TS932IN through Aetrix?
Please submit a Request for Quotation (RFQ) for TS932IN 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 TS932IN reliable?
The price and inventory of TS932IN are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TS932IN is usually 5 days.
3.What payment methods are accepted for TS932IN?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TS932IN transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TS932IN?
TS932IN orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TS932IN 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 TS932IN?
For technical support, including TS932IN datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TS932IN requirements.
6.How does Aetrix verify that TS932IN is sourced from the original manufacturer or authorized distributors?
All TS932IN 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 TS932IN meets industry standards.
7.What is the process for return or replacement of TS932IN?
All TS932IN units undergo pre-shipment inspection (PSI). If there is an issue with TS932IN, 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 TS932IN part is unused and in its original packaging.
Return procedure for TS932IN:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TS932IN Tags
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LM358DT
STMicroelectronics
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