My Inquiry
My Account
STMicroelectronics TS951ILT
- Part No.:
- TS951ILT
- Manufacturer:
- STMicroelectronics
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SC-74A, SOT-753
- Datasheet:
-
TS951ILT.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:29,543
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
TS951ILT from STMicroelectronics is a single-channel rail-to-rail input/output BiCMOS operational amplifier optimized for 3 V and 5 V battery-powered systems. It delivers 3 MHz gain-bandwidth, 1 V/µs slew rate, 0.9 mA supply current at 3 V, ±12 V absolute max supply, and operates across –40 °C to +125 °C - used in portable headphone speaker drivers and DAC output buffering.
For engineers reviewing the TS951ILT datasheet, TS951ILT pinout, TS951ILT application, or TS951ILT equivalent, key selection criteria include rail-to-rail I/O swing at low supply (2.7–12 V), latch-up immunity, SOT23-5 footprint constraints, and THD of 0.01% at 10 kHz with 4 Vpk-pk output.
Technical Context
The TS951ILT uses BiCMOS process technology to achieve rail-to-rail input common-mode range (VDD − 0.2 V to VCC + 0.2 V) and rail-to-rail output swing (2.8 V high / 0.25 V low at 3 V supply, RL = 600 Ω). Its 60° phase margin and 10 dB gain margin ensure stable unity-gain operation with capacitive loads up to 100 pF.
It features 80 dB supply voltage rejection ratio (SVR) and 80 dB common-mode rejection ratio (CMRR), enabling robust performance in noisy industrial signal conditioning. Input offset voltage is 6–8 mV over temperature, with drift as low as 2 µV/°C - suitable for precision DC-coupled sensor interfaces.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.7 V to 12 V - supports single-supply operation from Li-ion (3.3 V) up to industrial 12 V rails. |
| Gain-Bandwidth Product | 3 MHz - enables stable closed-loop gain ≥10 at 300 kHz for active filter stages. |
| Slew Rate | 1 V/µs - sufficient for 10 kHz full-scale audio signals with ≤0.01% THD at 4 Vpk-pk. |
| Input Offset Voltage | 6–8 mV (typ/max) - sets DC error floor in precision transimpedance or instrumentation amp front-ends. |
| Supply Current per Amplifier | 0.9–1.3 mA at 3 V - allows integration into ultra-low-power wearable medical sensors. |
| Output Short-Circuit Current | ±10 mA - drives 600 Ω headphones directly without external buffer stage. |
| THD + Noise | 0.01% at 10 kHz, AV = 2, RL = 10 kΩ - meets Class D audio preamp linearity requirements. |
Pinout & Package
SOT23-5 micropackage (2.9 mm × 2.8 mm × 1.3 mm), RoHS-compliant ECOPACK® grade, thermal resistance RthJA = 250 °C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Inverting Input (−) | Differential input node; accepts signals within VDD − 0.2 V to VCC + 0.2 V common-mode range. |
| 2 | Non-inverting Input (+) | Differential input node; same rail-to-rail CMVR as Pin 1; bias current ≤100 nA at Tmax. |
| 3 | Output | Rail-to-rail swing: VOH ≥ 2.8 V / VOL ≤ 0.25 V at 3 V supply, RL = 600 Ω. |
| 4 | VCC (Positive Supply) | Primary power rail; absolute max 14 V; SVR = 80 dB ensures noise rejection from noisy DC-DC outputs. |
| 5 | VDD (Ground / Negative Rail) | Reference node for single-supply operation; supports true 0 V output down to 80 mV at 3 V. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input common-mode range | Extends 0.2 V beyond both supply rails - eliminates level-shifting in 3 V sensor front-ends. |
| Rail-to-rail output voltage swing | Delivers >95% of supply rail-to-rail span at 600 Ω load - maximizes dynamic range in portable audio. |
| Latch-up immunity | Rated for 200 mA injection - prevents failure during ESD events or transient overvoltage on inputs. |
| Low 0.9 mA supply current at 3 V | Enables >100-hour battery life in coin-cell-powered medical patch monitors. |
| 80 dB supply voltage rejection | Suppresses ripple from switching regulators feeding adjacent MCU or RF sections. |
Applications
| Portable Headphone Driver | DAC Output Buffer |
|---|---|
|
Use Scenario: Driving 16–32 Ω stereo headphones from a 3.3 V microcontroller DAC output. IC Role / Device Role / Timing Role: Single-supply voltage follower with rail-to-rail output swing to preserve full DAC code range. Use Value: Delivers 4 Vpk-pk audio with 0.01% THD at 10 kHz while consuming only 0.9 mA - extends AA/AAA battery life by >30% vs. legacy op-amps. |
Use Scenario: Isolating and amplifying 12-bit DAC output in a PLC analog output module. IC Role / Device Role / Timing Role: Precision unity-gain buffer with <8 mV offset to maintain DC accuracy across –40 °C to +85 °C. Use Value: 2 µV/°C offset drift and 80 dB CMRR reject ground noise from shared PCB return paths, ensuring <0.1% FSR error. |
| Industrial Signal Conditioning | Medical Instrumentation Front-End |
|
Use Scenario: Amplifying low-level thermocouple or strain gauge signals in factory-floor sensors. IC Role / Device Role / Timing Role: Low-noise (25 nV/√Hz), rail-to-rail input stage preceding 24-bit ΣΔ ADC. Use Value: 0.9 mA quiescent current enables always-on sensing nodes; latch-up immunity survives 2 kV HBM ESD events near motor drives. |
Use Scenario: Biopotential acquisition in portable ECG patches with single 3 V coin cell. IC Role / Device Role / Timing Role: First-stage instrumentation amplifier input buffer with rail-to-rail CMVR covering full electrode offset range. Use Value: VIO ≤ 8 mV and ∆VIO/∆T ≤ 2 µV/°C ensure baseline stability over body temperature shifts - critical for arrhythmia detection. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar single-channel rail-to-rail op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TS951ID | SO8 package (5.0 × 4.0 mm), RthJA = 125 °C/W, identical electrical specs. | Better thermal dissipation for continuous 10 mA output; requires larger PCB area. | Select when board space permits and sustained output current >5 mA is required. |
| MCP6001T-I/OT | Lower GBW (1 MHz), higher VIO (1.5 mV typ), 0.6 µA IQ, SOT23-5. | Ultra-low power but insufficient bandwidth for audio or fast DAC buffering. | Select only for sub-100 kHz sensor signal conditioning where <1 µA supply current is mandatory. |
Compared with TS951ID and MCP6001T-I/OT, the TS951ILT uniquely balances 3 MHz bandwidth, rail-to-rail I/O, and 0.9 mA quiescent current in the smallest footprint - making it optimal for space-constrained, battery-powered audio and precision analog modules.
Availability
TS951ILT is available at Aetrix Electronics and suitable for portable medical devices, industrial sensor nodes, and automotive infotainment audio subsystems requiring stable component supply and long-term lifecycle support.
Supply support for TS951ILT 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 microcontrollers, power ICs, sensors, and analog components for industrial, automotive, and consumer markets.
The TS95x family belongs to ST's precision analog portfolio, engineered specifically for rail-to-rail performance at 3 V/5 V with robust ESD immunity and extended temperature operation - targeting portable and harsh-environment signal conditioning.
FAQ
What is the maximum capacitive load the TS951ILT can drive stably?
The TS951ILT maintains 60° phase margin and 10 dB gain margin with up to 100 pF capacitive load at unity gain, as verified in Figure 3 (gain/phase vs. frequency) and Table 3/4 of DS1256. For loads >100 pF, a series isolation resistor (≥10 Ω) is required at the output to prevent peaking or oscillation.
Does the TS951ILT support dual-supply operation?
Yes - the TS951ILT operates with split supplies (e.g., ±1.5 V to ±6 V) as confirmed by absolute maximum ratings (VCC = 14 V, VIN = VDD − 0.3 V to VCC + 0.3 V) and electrical test conditions in Tables 3–4 using VDD = 0 V reference. Common-mode range remains rail-to-rail relative to each supply rail.
Is the TS951ILT qualified for automotive applications?
No - the TS951ILT (marking K101) is industrial-grade (–40 °C to +125 °C). Automotive qualification is reserved for TS951IYLT (K102) and TS951RIYLT (K103), which meet AEC-Q100 Grade 2 and undergo additional screening per AEC-Q001/Q002.
How does the TS951ILT's input bias current affect high-impedance sensor interfaces?
Input bias current is 35–200 nA over temperature (Table 3–4), causing ≤2 mV error across 10 MΩ source impedance. For pH or piezoelectric sensors (>100 MΩ), use guard traces and low-leakage PCB materials - or select a JFET-input op-amp with <1 pA IIB.
TS951ILT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 1
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 1V/µs
- Gain Bandwidth Product:
- 3 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 35 nA
- Voltage - Input Offset:
- 6 mV
- Current - Supply:
- 950µA
- Current - Output / Channel:
- 10 mA
- Voltage - Supply Span (Min):
- 2.7 V
- Voltage - Supply Span (Max):
- 12 V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
TS951ILT FAQ
1.How can I place an order for TS951ILT through Aetrix?
Please submit a Request for Quotation (RFQ) for TS951ILT 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 TS951ILT reliable?
The price and inventory of TS951ILT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TS951ILT is usually 5 days.
3.What payment methods are accepted for TS951ILT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TS951ILT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TS951ILT?
TS951ILT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TS951ILT 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 TS951ILT?
For technical support, including TS951ILT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TS951ILT requirements.
6.How does Aetrix verify that TS951ILT is sourced from the original manufacturer or authorized distributors?
All TS951ILT 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 TS951ILT meets industry standards.
7.What is the process for return or replacement of TS951ILT?
All TS951ILT units undergo pre-shipment inspection (PSI). If there is an issue with TS951ILT, 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 TS951ILT part is unused and in its original packaging.
Return procedure for TS951ILT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TS951ILT Tags
-
LM358DT
STMicroelectronics
-
LM358DR
Texas Instruments
-
LM2904DR
Texas Instruments
-
LM358ADR
Texas Instruments
-
LM2904DGKR
Texas Instruments
-
LM324DR
Texas Instruments
-
MCP6006T-E/OT
Microchip Technology
-
MCP6006UT-E/OT
Microchip Technology
-
LM324PWR
Texas Instruments
-
LM2902PWR
Texas Instruments
-
LM2902DR
Texas Instruments
-
LM358P
Texas Instruments
Tech Hub
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
