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STMicroelectronics TS922AIDT
- Part No.:
- TS922AIDT
- Manufacturer:
- STMicroelectronics
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TS922AIDT.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:12,325
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Product details
Overview
TS922AIDT 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 (driving 32 Ω loads), 4 MHz gain-bandwidth, 1 V/μs slew rate, and ultra-low 9 nV/√Hz input noise - enabling high-fidelity line drivers and portable speaker amplification.
For engineers reviewing the TS922AIDT datasheet, TS922AIDT pinout, TS922AIDT application, or TS922AIDT equivalent, key selection criteria include rail-to-rail operation at 2.7–12 V supply, low 900 μV max input offset voltage (TS922A grade), latch-up immunity, and stability with up to 500 pF capacitive loads in audio signal paths.
Technical Context
The TS922AIDT integrates two independent BiCMOS op-amps with matched input stages enabling precise differential signaling and low THD (0.005% at 1 kHz, RL = 600 Ω). Its architecture supports unity-gain stability into 500 pF while maintaining 68° phase margin and 12 dB gain margin under 600 Ω load conditions.
It operates across –40 °C to +125 °C with rail-to-rail common-mode input range (VCC– – 0.2 V to VCC+ + 0.2 V) and output swing within 180 mV of rails at 32 Ω. Input bias current remains ≤100 nA over temperature, and channel separation exceeds 120 dB - critical for stereo audio integrity.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 2.7 V to 12 V - enables direct use in single-supply 3.3 V or 5 V portable systems without level-shifting. |
| Input Offset Voltage | ≤900 μV (max, TS922A grade) - minimizes DC error in precision sensor interfaces and active filters. |
| Output Current | 80 mA (short-circuit limited) - drives low-impedance loads including 32 Ω headphones and piezo actuators directly. |
| Gain-Bandwidth Product | 4 MHz - supports wideband audio amplification up to ~200 kHz with stable closed-loop gain. |
| Input Voltage Noise | 9 nV/√Hz at 1 kHz - preserves SNR in microphone preamps and low-level analog signal chains. |
| THD + Noise | 0.005% at 1 kHz, RL = 600 Ω - meets high-fidelity audio requirements for multimedia playback. |
| Capacitive Load Drive | Stable up to 500 pF - allows direct connection to long PCB traces or LCD bias networks without isolation resistors. |
Pinout & Package
TSSOP8 package: 3 mm × 4.4 mm body, 0.65 mm pitch, 1.2 mm height, lead-free, ECOPACK® compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT A) | Amplifier A output | Delivers rail-to-rail swing; capable of sourcing/sinking 80 mA into 32 Ω loads. |
| 2 (–IN A) | Inverting input A | High-impedance BiCMOS node; input bias current ≤100 nA over full temperature range. |
| 3 (+IN A) | Non-inverting input A | Rail-to-rail common-mode range supports single-supply sensor interfacing down to VCC– – 0.2 V. |
| 4 (VCC–) | Negative supply / ground | Reference for dual-supply operation or system ground in single-supply configurations. |
| 5 (+IN B) | Non-inverting input B | Matched to Pin 3; enables dual-channel synchronous operation in stereo or differential applications. |
| 6 (–IN B) | Inverting input B | Matched offset and bias characteristics ensure <1.8 mV max ΔVio between channels at temperature extremes. |
| 7 (OUT B) | Amplifier B output | Independent output stage; channel separation >120 dB prevents crosstalk in stereo line drivers. |
| 8 (VCC+) | Positive supply | Accepts 2.7–12 V; internal ESD protection rated to 2 kV HBM ensures robustness during board handling. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail I/O | Enables full dynamic range utilization in 3 V systems - output swings within 180 mV of rails at 32 Ω, input accepts signals to VCC– – 0.2 V. |
| Low-noise architecture | 9 nV/√Hz input voltage noise at 1 kHz - preserves signal integrity in microphone preamplifiers and instrumentation front-ends. |
| High-output-current stage | 80 mA continuous drive capability - eliminates need for external buffer transistors when driving 32 Ω speakers or piezo elements. |
| Capacitive load stability | Stable with ≥500 pF loads - permits direct interface to LCD bias lines or long interconnects without compensation networks. |
| Latch-up immunity | Rated to 200 mA - prevents destructive failure during transient overloads or hot-plug events in portable equipment. |
Applications
| Portable Speaker Amplifier | Line Driver for Audio DAC Output |
|---|---|
Use Scenario: Driving 32 Ω stereo headphones or compact speaker modules from a 3.3 V microcontroller-based media player. IC Role / Device Role / Timing Role: Dual-channel output buffer and voltage amplifier with rail-to-rail swing and low THD. Use Value: Eliminates external boost converters or discrete buffers; 80 mA per channel supports 200 mW into 32 Ω at 3.3 V supply. |
Use Scenario: Buffering and level-shifting the differential output of a stereo audio DAC before feeding an analog filter network. IC Role / Device Role / Timing Role: Precision unity-gain follower with matched channel characteristics and low noise floor. Use Value: Maintains 120 dB channel separation and 0.005% THD, preserving stereo imaging and dynamic range in portable audio systems. |
| Instrumentation Signal Conditioning | Multimedia System Headphone Jack Driver |
Use Scenario: Amplifying low-level sensor outputs (e.g., MEMS microphone, thermopile) in battery-powered test equipment. IC Role / Device Role / Timing Role: Low-noise, low-offset transimpedance or non-inverting amplifier stage. Use Value: 9 nV/√Hz noise and ≤900 μV offset enable sub-mV signal resolution without AC coupling or trimming. |
Use Scenario: Providing short-circuit protected, pop-free headphone output in tablets and smart displays with shared 3.3 V rail. IC Role / Device Role / Timing Role: Single-supply headphone driver with fast turn-on/turn-off control and rail-to-rail output. Use Value: Integrated 2 kV ESD protection and latch-up immunity prevent field failures; no external protection components required. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual rail-to-rail op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LMV358IDR | Lower GBW (1 MHz), higher input offset (3 mV max), no 32 Ω drive capability (40 mA). | Suitable for general-purpose low-speed sensing but not audio output stages. | Select when cost sensitivity outweighs audio fidelity and output drive requirements. |
| MCP6022-I/SN | Higher input bias current (1 pA typ vs. 100 nA), lower noise (11.5 nV/√Hz), same 80 mA drive. | Better for high-impedance sensor nodes; less optimal for low-Z audio due to higher noise floor. | Prefer for precision instrumentation where input impedance >1 MΩ dominates design constraints. |
Compared with LMV358IDR and MCP6022-I/SN, the TS922AIDT uniquely balances 4 MHz bandwidth, 9 nV/√Hz noise, and 80 mA output drive - making it the only option among the three qualified for simultaneous high-SNR and high-current audio line driving at 3 V.
Availability
TS922AIDT is available at Aetrix Electronics and suitable for portable speaker amplifiers, instrumentation signal conditioning, and multimedia system headphone jack drivers requiring stable component supply across industrial temperature ranges.
Supply support for TS922AIDT 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 TS922A series belongs to ST's precision analog op-amp product line, engineered specifically for low-voltage, low-noise, high-output-current applications in battery-powered audio and portable instrumentation.
FAQ
What is the maximum capacitive load the TS922AIDT can drive while remaining stable?
The TS922AIDT is specified stable with capacitive loads up to 500 pF when configured as a unity-gain buffer, as confirmed by phase margin (68°) and gain margin (12 dB) measurements in the datasheet. This allows direct connection to LCD bias lines, long PCB traces, or ceramic decoupling networks without external isolation resistors.
Does the TS922AIDT support true rail-to-rail input operation at 2.7 V supply?
Yes - the TS922AIDT guarantees rail-to-rail input common-mode range from VCC– – 0.2 V to VCC+ + 0.2 V across its full operating supply range (2.7 V to 12 V) and temperature range (–40 °C to +125 °C), enabling accurate sensing of signals near ground or supply rails in 2.7 V systems.
How does the TS922AIDT's 80 mA output current translate to usable power into 32 Ω loads?
At 3.3 V supply, the TS922AIDT delivers ≥2.63 V output swing into 32 Ω (per datasheet Table 3), yielding ≥217 mW peak power (V²/R). This exceeds the 150 mW typical requirement for loud portable speaker operation, eliminating need for external Class-D or discrete output stages.
Is the TS922AIDT pin-compatible with standard SO8 dual op-amps like the LM358?
No - the TS922AIDT uses TSSOP8 packaging (3 mm × 4.4 mm, 0.65 mm pitch), whereas LM358 typically uses SO8 (4.9 mm × 6.0 mm, 1.27 mm pitch). Pin functions match industry-standard dual op-amp layout (e.g., Pin 1 = OUT A, Pin 2 = –IN A), but physical footprint and thermal characteristics differ significantly.
TS922AIDT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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:
- 900 µV
- 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:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
TS922AIDT FAQ
1.How can I place an order for TS922AIDT through Aetrix?
Please submit a Request for Quotation (RFQ) for TS922AIDT 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 TS922AIDT reliable?
The price and inventory of TS922AIDT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TS922AIDT is usually 5 days.
3.What payment methods are accepted for TS922AIDT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TS922AIDT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TS922AIDT?
TS922AIDT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TS922AIDT 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 TS922AIDT?
For technical support, including TS922AIDT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TS922AIDT requirements.
6.How does Aetrix verify that TS922AIDT is sourced from the original manufacturer or authorized distributors?
All TS922AIDT 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 TS922AIDT meets industry standards.
7.What is the process for return or replacement of TS922AIDT?
All TS922AIDT units undergo pre-shipment inspection (PSI). If there is an issue with TS922AIDT, 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 TS922AIDT part is unused and in its original packaging.
Return procedure for TS922AIDT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TS922AIDT Tags
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LM358DT
STMicroelectronics
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LM2904DR
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LM358ADR
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MCP6006UT-E/OT
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