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

STMicroelectronics TS922IN

Name: TS922IN
Brand: STMicroelectronics
SKU: TS922IN
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: TS922IN

Manufacturer:: STMicroelectronics

Category:: Instrumentation, Op Amps, Buffer Amps

Package:: 8-DIP (0.300", 7.62mm)

Datasheet:: TS922IN.pdf

Description:: IC OPAMP GP 2 CIRCUIT 8MINI DIP

Quantity:: RFQ Add To RFQ list

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Inventory:2,198

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Product details

Overview

TS922IN from STMicroelectronics is a rail-to-rail input/output dual BiCMOS operational amplifier optimized for 3 V and 5 V battery-powered audio systems. It delivers 80 mA output current, 4 MHz gain-bandwidth product, 9 nV/√Hz input noise at 1 kHz, and operates from 2.7 V to 12 V supply. Its low 900 µV max input offset voltage (TS922A variant) and 0.005% THD at 1 kHz make it suitable for portable speaker drivers and instrumentation front-ends.

For engineers reviewing the TS922IN datasheet, TS922IN pinout, TS922IN application, or TS922IN equivalent, key selection criteria include rail-to-rail swing capability, capacitive load stability up to 500 pF, high-output-current drive into 32 Ω loads, and low-noise performance in single-supply 3 V systems.

Technical Context

The TS922IN uses BiCMOS process technology to combine bipolar input stage low noise (9 nV/√Hz) with CMOS output stage high current delivery (80 mA). Its unity-gain stable architecture supports capacitive loads up to 500 pF without external compensation.

It features rail-to-rail input common-mode range (V_CC– – 0.2 V to V_CC+ + 0.2 V) and rail-to-rail output swing within 180 mV of rails at 32 Ω load, enabling full dynamic range utilization in low-voltage audio signal chains.

Key Specifications

Parameter	Value and Actual Design Meaning
Supply Voltage	2.7 V to 12 V - enables direct operation from single-cell Li-ion (3.0–3.7 V) or dual-cell alkaline (3.0 V) supplies.
Gain-Bandwidth Product	4 MHz - supports audio bandwidth extension beyond 20 kHz with adequate phase margin (68°) at 600 Ω load.
Input Noise Density	9 nV/√Hz at 1 kHz - ensures minimal contribution to system noise floor in microphone preamps or sensor signal conditioning.
Output Current	80 mA - drives 32 Ω headphones or line-level actuators without external buffers.
Input Offset Voltage	≤ 900 µV (TS922A grade) - reduces DC error in precision gain stages and active filters.
Total Supply Current	3.2 mA max over temperature - enables dual-channel operation with < 7 mW quiescent power at 3 V.
THD + Noise	0.005% at 1 kHz, 2 V_pp, R_L = 600 Ω - meets high-fidelity audio requirements for portable multimedia systems.

Pinout & Package

TS922IN is available in TSSOP8 package (3.0 × 4.4 mm, 0.65 mm pitch), compatible with space-constrained portable designs. The device uses standard dual-opamp pinout configuration.

Pin/Terminal	Circuit Role	Design Meaning
1	Inverting input of opamp A	Accepts feedback network connection; rail-to-rail common-mode range supports single-supply AC-coupled inputs.
2	Non-inverting input of opamp A	Direct connection to sensor or reference; input bias current ≤ 100 nA minimizes offset error in high-Z sources.
3	Output of opamp A	Delivers 80 mA into 32 Ω; output swing within 180 mV of rails ensures >95% usable voltage range at 3 V supply.
4	V_CC– (ground)	Reference node for dual-supply or single-supply operation; supports true ground-referenced outputs.
5	Non-inverting input of opamp B	Independent channel input; identical electrical specs to pin 2 enable matched dual-channel signal paths.
6	Inverting input of opamp B	Supports inverting gain configuration; differential input voltage rating ±1 V requires series resistor if exceeded.
7	Output of opamp B	Simultaneous dual-channel drive capability; stable with 500 pF capacitive load avoids oscillation in LCD bias or filter networks.
8	V_CC+	Positive supply rail; absolute max 14 V allows transient headroom during battery surge conditions.

Key Features

Feature	Design Value
Rail-to-rail I/O	Enables full-swing signal handling in 3 V systems without level-shifting circuitry or dual supplies.
Low input noise	9 nV/√Hz at 1 kHz preserves SNR in microphone preamplifiers and low-level sensor interfaces.
High output current	80 mA per channel drives 32 Ω loads directly-eliminates need for external output transistors in headphone amps.
Capacitive load stability	Stable with up to 500 pF load capacitance-supports direct connection to long PCB traces or LCD panel bias networks.
ESD protection	2 kV HBM rating protects against handling damage during assembly of portable consumer devices.

Applications

Portable Speaker Amplifier

Instrumentation Front-End

Use Scenario: Driving 32 Ω stereo speakers in Bluetooth-enabled portable speakers powered by 3.7 V Li-ion battery.

IC Role / Device Role / Timing Role: Dual-channel line driver providing gain, filtering, and low-impedance output buffering.

Use Value: Rail-to-rail output swing maximizes acoustic output power; 80 mA per channel eliminates external boost stages.

Use Scenario: Signal conditioning for thermocouple or bridge sensor outputs in handheld test equipment.

IC Role / Device Role / Timing Role: Low-noise, low-offset instrumentation amplifier input stage with programmable gain.

Use Value: 9 nV/√Hz noise and ≤900 µV offset preserve microvolt-level resolution without chopper stabilization.

Multimedia Audio Codec Interface

Line Driver for Industrial HMI

Use Scenario: Output buffer between audio codec DAC and 600 Ω analog line-out jack in tablet or smart display.

IC Role / Device Role / Timing Role: Dual-channel line driver with THD < 0.005% ensuring CD-quality audio fidelity.

Use Value: High PSRR (85 dB) rejects digital supply noise; 4 MHz GBW supports anti-aliasing filter implementation.

Use Scenario: Driving analog voltage signals across 1–2 m cables to PLC analog input modules in factory HMIs.

IC Role / Device Role / Timing Role: Robust line driver with high output current and latch-up immunity (200 mA).

Use Value: 80 mA drive capability maintains signal integrity under cable capacitance; ESD protection guards against field ESD events.

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual rail-to-rail opamp applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
TLV2462IDR	Lower GBW (6.4 MHz), higher quiescent current (650 µA per amp), no specified 32 Ω drive capability.	Better for precision DC-coupled sensors; less suited for audio due to higher noise (16 nV/√Hz) and lower output current.	Select when ultra-low input bias current (1 pA) outweighs audio performance needs.
MCP6022-I/SN	Lower output current (25 mA), higher input offset (2.5 mV), wider supply range (2.7–6 V only).	Optimized for low-power microcontroller peripherals; insufficient for 32 Ω speaker loads requiring >50 mA.	Prefer for cost-sensitive industrial sensor nodes where audio-grade drive is unnecessary.

Compared with TLV2462IDR and MCP6022-I/SN, TS922IN uniquely balances 80 mA output drive, 9 nV/√Hz noise, and 3 V rail-to-rail operation-making it the only option among the three qualified for battery-powered 32 Ω speaker amplification without external components.

Availability

TS922IN is available at Aetrix Electronics and suitable for portable speaker amplifiers, instrumentation front-ends, multimedia audio interfaces, and industrial line drivers requiring stable component supply across automotive-grade temperature ranges (–40 °C to 125 °C).

Supply support for TS922IN 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 TS922 series belongs to ST's precision analog portfolio, engineered specifically for high-fidelity, low-voltage audio and sensor signal conditioning where rail-to-rail swing, low noise, and robust output drive are critical.

FAQ

What is the maximum capacitive load the TS922IN can drive while remaining stable?

The TS922IN is unity-gain stable with capacitive loads up to 500 pF, as verified in the datasheet's Figure 13 open-loop gain/phase plots and confirmed by phase margin ≥68° at 600 Ω load with 100 pF. This enables direct driving of LCD bias networks, long PCB traces, or unbuffered filter stages without external compensation.

Does TS922IN support true single-supply operation with input signals down to ground?

Yes. The TS922IN features rail-to-rail input common-mode range extending from V_CC– – 0.2 V to V_CC+ + 0.2 V, allowing inputs to reach ground (V_CC–) in single-supply configurations. Its rail-to-rail output also swings within 180 mV of both rails at 32 Ω, preserving dynamic range in 3 V systems.

How does the TS922IN's 80 mA output current translate to real-world load capability?

At 3 V supply, the 80 mA output current enables direct drive of 32 Ω loads with ≥2.63 V output swing (per datasheet Table 3), delivering >210 mW per channel. This eliminates external emitter-follower or MOSFET buffers in portable speaker and headphone applications, reducing BOM count and board area.

Is the TS922IN pin-compatible with other dual opamps in TSSOP8 package?

No. TS922IN follows standard dual-opamp pinout (pin 1 = opamp A–, pin 2 = opamp A+, pin 3 = opamp A out, etc.), but its internal BiCMOS architecture, rail-to-rail I/O, and 80 mA drive differ significantly from legacy bipolar or CMOS dual opamps. Pin compatibility alone does not guarantee functional equivalence without verifying noise, offset, and drive specifications.

TS922IN 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:: 1.3V/µs

Gain Bandwidth Product:: 4 MHz

-3db Bandwidth:: -

Current - Input Bias:: 15 nA

Voltage - Input Offset:: 3 mV

Current - Supply:: 2mA

Current - Output / Channel:: 80 mA

Voltage - Supply Span (Min):: 2.7 V

Voltage - Supply Span (Max):: 12 V

Operating Temperature:: -40°C ~ 125°C

Grade:: Automotive

Qualification:: AEC-Q100

Mounting Type:: Through Hole

Supplier Device Package:: 8-Mini DIP

TS922IN FAQ

1.How can I place an order for TS922IN through Aetrix?

Please submit a Request for Quotation (RFQ) for TS922IN 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 TS922IN reliable?

The price and inventory of TS922IN are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TS922IN is usually 5 days.

3.What payment methods are accepted for TS922IN?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TS922IN transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for TS922IN?

TS922IN orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your TS922IN 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 TS922IN?

For technical support, including TS922IN datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TS922IN requirements.

6.How does Aetrix verify that TS922IN is sourced from the original manufacturer or authorized distributors?

All TS922IN 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 TS922IN meets industry standards.

7.What is the process for return or replacement of TS922IN?

All TS922IN units undergo pre-shipment inspection (PSI). If there is an issue with TS922IN, 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 TS922IN part is unused and in its original packaging.

Return procedure for TS922IN:

1.Submit a request within 90 days.

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

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