Send an Inquiry

To receive a quote for your project, please fill in the following information, and we’ll get back to you promptly.

Submit Inventory List

Please fill in the following information, and we’ll get back to you promptly.

Home > Products > Integrated Circuits (ICs) > Linear > Instrumentation, Op Amps, Buffer Amps

STMicroelectronics TS951ID

Name: TS951ID
Brand: STMicroelectronics
SKU: TS951ID
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Compare

Part No.:: TS951ID

Manufacturer:: STMicroelectronics

Category:: Instrumentation, Op Amps, Buffer Amps

Package:: 8-SOIC (0.154", 3.90mm Width)

Datasheet:: TS951ID.pdf

Description:: IC OPAMP GP 1 CIRCUIT 8SOIC

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:3,700

Please send an inquiry. Send us your inquiry, and we will respond immediately.

Product details

Overview

TS951ID 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 TS951ID datasheet, TS951ID pinout, TS951ID application, or TS951ID equivalent, this page provides verified package mapping (SO8), confirmed rail-to-rail I/O behavior, thermal resistance (125 °C/W), latch-up immunity (200 mA), and ESD robustness (1 kV HBM) - all critical for industrial signal conditioning and low-voltage analog front-end design.

Technical Context

The TS951ID uses a BiCMOS process enabling rail-to-rail input common-mode range (V_DD − 0.2 V to V_CC + 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 3 MHz GBP and 1 V/µs slew rate support medium-speed active filtering without phase margin degradation (60° at unity gain).

It features 80 dB supply voltage rejection ratio (SVR) and 80 dB common-mode rejection ratio (CMRR), with input offset voltage of 6–8 mV and drift of only 2 µV/°C - enabling stable DC-coupled amplification in automotive sensor interfaces and medical instrumentation where precision and temperature stability are essential.

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 without level-shifting.
Gain Bandwidth Product	3 MHz - enables stable closed-loop gain ≥10 at 300 kHz for anti-aliasing or reconstruction filters.
Slew Rate	1 V/µs - sufficient for 10 kHz full-scale sine output at 6 Vpp without distortion in DAC buffer applications.
Input Offset Voltage	6–8 mV (25 °C) - sets minimum resolvable DC signal; suitable for 12-bit systems with ≥20 mV full-scale headroom.
Supply Current per Amplifier	0.9–1.4 mA - enables dual-stage amplification in battery-powered devices with <2.8 mA total quiescent draw.
Output Short-Circuit Current	±10 mA - drives 600 Ω loads directly (e.g., line-level audio) without external buffers.
Operating Temperature	−40 °C to +125 °C - qualified for under-hood automotive and industrial control environments.

Pinout & Package

TS951ID is housed in an SO8 (Small Outline 8-pin) package with standard 1.27 mm pitch, 4.9 mm × 6.0 mm body, and 125 °C/W junction-to-ambient thermal resistance. Pin 1 is marked by a bevelled corner or dot; pin numbering follows counter-clockwise convention from top-left when viewed with marking side up.

Pin/Terminal	Circuit Role	Design Meaning
1	Inverting Input (−)	Differential input node; accepts signals referenced to ground or virtual ground in inverting configurations.
2	Non-inverting Input (+)	Differential input node; used for unity-gain followers or non-inverting amplifiers with rail-to-rail CMVR.
3	Output	Push-pull output stage capable of sourcing/sinking ±10 mA while swinging within 100 mV of rails at 3 V.
4	VCC− / GND	Ground reference terminal; must be connected to system ground plane for stable bias and noise immunity.
5	VCC+	Positive supply rail; accepts 2.7–12 V; decoupling capacitor (100 nF) required within 5 mm for stability.
6–8	No Connect (NC)	Internally unconnected pins; must remain floating - no PCB trace or pull-up/pull-down allowed.

Key Features

Feature	Design Value
Rail-to-rail input common-mode range	Extends from V_DD − 0.2 V to V_CC + 0.2 V - enables direct sensing of signals near supply rails (e.g., battery voltage monitoring).
Rail-to-rail output swing	Delivers 2.8 V high / 0.25 V low at 3 V supply into 600 Ω - maximizes dynamic range in single-supply audio and sensor interfaces.
Latch-up immunity	200 mA - prevents destructive failure during overvoltage transients or ESD events on input/output pins.
Low power consumption	0.9 mA at 3 V - allows integration into always-on sensor nodes with multi-year battery life using CR2032 cells.
High ESD robustness	1 kV HBM - eliminates need for external TVS diodes in handheld medical or industrial test equipment.

Applications

Portable Headphone Driver

DAC Output Buffer

Use Scenario: Driving 16–32 Ω stereo headphones from a 3.3 V microcontroller DAC in wearables.

IC Role / Device Role / Timing Role: Single-supply voltage follower with rail-to-rail output swing to maximize audible voltage swing without clipping.

Use Value: Delivers >2 Vpp into 32 Ω load at 0.9 mA quiescent current - extends battery runtime while maintaining THD <0.01% at 10 kHz.

Use Scenario: Isolating and scaling a 0–2.5 V DAC output to drive a 0–5 V analog actuator interface.

IC Role / Device Role / Timing Role: Non-inverting amplifier (G = 2) with rail-to-rail input to accept full DAC output range without headroom loss.

Use Value: 6–8 mV input offset adds ≤0.3% full-scale error; 3 MHz GBP ensures step response settling <1 µs for 12-bit accuracy.

Automotive Cabin Sensor Signal Conditioning

Medical ECG Front-End Buffer

Use Scenario: Amplifying thermistor or pressure sensor outputs in vehicle cabin modules operating at −40 °C to +125 °C.

IC Role / Device Role / Timing Role: Precision DC-coupled amplifier with 2 µV/°C offset drift and 80 dB CMRR to reject engine harness noise.

Use Value: Maintains <10 µV drift over full temperature range - avoids recalibration in HVAC or occupancy detection systems.

Use Scenario: First-stage buffer for dry-electrode ECG sensors with high source impedance (>1 MΩ) and sub-mV signals.

IC Role / Device Role / Timing Role: Low-bias-current (35–200 nA) rail-to-rail input amplifier minimizing signal attenuation and DC shift.

Use Value: 35 nA typical input bias current reduces electrode polarization error to <100 µV - critical for baseline stability in diagnostic-grade monitors.

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
TS951ILT	SOT23-5 package (2.9 mm × 2.8 mm), same electrical specs, lower thermal resistance (250 °C/W) but higher R_thJA.	Better suited for space-constrained portable devices; less effective for sustained >1 mA output due to thermal limits.	Select when board area is critical and average load current stays below 0.5 mA.
LMV321IDBVR	Lower GBP (1 MHz), higher supply current (110 µA typ), same rail-to-rail I/O, but only rated to 85 °C.	Not qualified for automotive or extended industrial temperature use; insufficient bandwidth for >100 kHz filtering.	Choose only for cost-sensitive consumer applications with ambient <70 °C and bandwidth <500 kHz.

Compared with TS951ILT and LMV321IDBVR, TS951ID offers superior thermal performance in SO8 (125 °C/W vs. 250 °C/W), guaranteed operation to +125 °C, and 3× higher gain-bandwidth - making it the only choice for automotive signal chains requiring both precision and ruggedness.

Availability

TS951ID is available at Aetrix Electronics and suitable for industrial signal conditioning, portable audio driver circuits, and automotive cabin sensor interfaces requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for TS951ID 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 automotive, industrial, and consumer markets.

The TS95x family was engineered specifically for low-voltage, rail-to-rail precision amplification in battery-powered and automotive systems - emphasizing low power, wide supply range, and robust ESD/latch-up performance.

FAQ

What is the maximum capacitive load the TS951ID can drive without instability?

The TS951ID is stable with up to 100 pF capacitive load when configured as a unity-gain buffer, as validated by phase margin (60°) and gain margin (10 dB) measurements in the datasheet. For loads >100 pF, a series resistor (≥10 Ω) between output and capacitance is required to maintain stability - especially critical in DAC buffer or active filter designs where stray capacitance exceeds 50 pF.

Does TS951ID support dual-supply operation?

Yes - TS951ID operates with split supplies (e.g., ±2.5 V to ±6 V), confirmed by absolute maximum ratings (V_CC = 14 V) and common-mode input range extending to V_DD − 0.2 V. In dual-supply mode, V_CC+ connects to +V_S, V_CC− to −V_S, and inputs may swing symmetrically around ground - enabling bipolar signal processing in medical instrumentation and test equipment.

Is the TS951ID pin-compatible with other op-amps in SO8 format?

No - TS951ID has three NC pins (6–8) and a nonstandard pinout: pins 1–3 are IN−/IN+/OUT, pin 4 is GND, pin 5 is V_CC+. This differs from industry-standard SO8 op-amps (e.g., LM358, TL072) which place V_CC+ at pin 8 and V_CC− at pin 4. Direct replacement requires PCB redesign; functional substitution demands verification of input/output polarity and supply pin mapping.

How does the 2.7 V minimum supply affect performance in Li-ion battery applications?

At 2.7 V, TS951ID maintains full rail-to-rail output swing (2.6 V high / 0.1 V low into 600 Ω), 3 MHz GBP, and 1 V/µs slew rate - matching specifications at 3 V. This ensures consistent audio fidelity and sensor signal integrity down to end-of-discharge voltage, eliminating brownout-induced distortion in portable medical or industrial logging devices powered by single-cell Li-ion batteries.

TS951ID Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: -

Package/Case:: 8-SOIC (0.154", 3.90mm Width)

Packaging:: Tube

Product Status:: Obsolete

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:: 8-SOIC

TS951ID FAQ

1.How can I place an order for TS951ID through Aetrix?

Please submit a Request for Quotation (RFQ) for TS951ID 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 TS951ID reliable?

The price and inventory of TS951ID are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TS951ID is usually 5 days.

3.What payment methods are accepted for TS951ID?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TS951ID transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for TS951ID?

TS951ID orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your TS951ID 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 TS951ID?

For technical support, including TS951ID datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TS951ID requirements.

6.How does Aetrix verify that TS951ID is sourced from the original manufacturer or authorized distributors?

All TS951ID 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 TS951ID meets industry standards.

7.What is the process for return or replacement of TS951ID?

All TS951ID units undergo pre-shipment inspection (PSI). If there is an issue with TS951ID, 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 TS951ID part is unused and in its original packaging.

Return procedure for TS951ID:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

Tech Hub

2026-09-09 Counterfeit Electronic Components: How to Detect, Authenticate, and Test Suspect Parts

Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …

2026-09-08 Obsolete Electronic Components: How to Source and Evaluate Replacements

A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.

2026-09-07 TTL vs CMOS Logic Levels: 74HC and 74HCT Compatibility Explained

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.

2026-09-04 Logic Level Shifter: How to Connect 3.3V and 5V Logic Safely

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.

2026-09-03 74HC595 vs TPIC6B595: Output Drive, Pinout, Current, and Load Selection

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…

2026-09-02 74HC595 Pinout, Timing, Output Current, and Applications

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…

2026-09-01 Latch vs Flip-Flop: Timing, Differences and Design Choices

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…

2026-08-30 D Latch Circuit: Truth Table, Timing, ICs and Applications

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 …

2026-08-28 SR Latch Explained: NOR and NAND Circuits, Truth Tables, and Applications

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…

2026-08-27 Latch Circuit: SR and D Latches, Truth Tables, Timing, and Applications

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…