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STMicroelectronics TS922IDT
- Part No.:
- TS922IDT
- Manufacturer:
- STMicroelectronics
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TS922IDT.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:9,963
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Product details
Overview
TS922IDT 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 into 32 Ω loads, features 9 nV/√Hz input noise at 1 kHz, 4 MHz gain-bandwidth product, 1 V/μs slew rate, and operates from 2.7 V to 12 V supply.
For engineers reviewing the TS922IDT datasheet, TS922IDT pinout, TS922IDT application, or TS922IDT equivalent, key selection criteria include low-noise audio drive capability, rail-to-rail swing in portable instrumentation, high-output-current line driving, and stable operation with ≥500 pF capacitive loads.
Technical Context
The TS922IDT uses a BiCMOS process enabling both high-speed (4 MHz GBW) and low-noise (9 nV/√Hz) performance while maintaining rail-to-rail input common-mode range (VCC– – 0.2 V to VCC+ + 0.2 V) and rail-to-rail output swing within 180 mV of rails at 32 Ω load. Its phase margin remains 68° with 100 pF capacitive load and 600 Ω series resistance.
It achieves 0.005% THD+N at 1 kHz with 2 Vpp output into 600 Ω, supports ±1.5 V to ±6 V dual-supply operation (equivalent to 3 V to 12 V single-supply), and exhibits 120 dB channel separation - critical for stereo audio and differential sensor signal conditioning.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.7 V to 12 V - enables direct use in single-cell Li-ion (3.0–4.2 V), two-cell alkaline (3.0 V), and 5 V USB-powered systems without LDO pre-regulation. |
| Input Noise Density | 9 nV/√Hz at 1 kHz - ensures minimal audible hiss in preamplifier and headphone driver stages where signal levels are below 100 mV. |
| Output Current Drive | 80 mA per amplifier - sustains 2.63 VOH and 180 mVVOL into 32 Ω, enabling direct connection to 32 Ω headphones or piezoelectric actuators without external buffers. |
| Gain-Bandwidth Product | 4 MHz - supports stable unity-gain buffer configurations and closed-loop bandwidths >100 kHz for ultrasonic transducer drivers or wideband instrumentation. |
| Input Offset Voltage | ≤1.8 mV (max, full temp range) - reduces DC error in precision DC-coupled gain stages used in medical sensor front-ends or industrial analog I/O modules. |
| Common-Mode Rejection | 56 dB (min, full temp range) - maintains signal integrity in noisy environments such as automotive infotainment head units with shared ground return paths. |
| Slew Rate | 1 V/μs - prevents slew-induced distortion on 20 kHz full-scale audio signals (requires ≥0.126 V/μs), supporting clean 10 Vpp output at 20 kHz. |
Pinout & Package
TSSOP8 package: 3 mm × 4.4 mm body, 0.65 mm pitch, 1.05 mm max height, lead-free ECOPACK® compliant. Thermal resistance RthJA = 120 °C/W.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Inverting Input (Amplifier A) | Accepts feedback network connection; common-mode range extends to VCC– – 0.2 V, enabling true single-supply AC-coupled sensor interfaces. |
| 2 | Non-inverting Input (Amplifier A) | Receives signal source; input bias current ≤100 nA minimizes voltage drop across high-impedance sources like piezoelectric sensors. |
| 3 | Output (Amplifier A) | Delivers rail-to-rail swing and 80 mA sink/source - directly drives 32 Ω loads without external MOSFET or BJT stage. |
| 4 | VCC– (Ground / Negative Supply) | Reference node for dual-supply operation or ground return in single-supply configurations; supports 0 V minimum potential. |
| 5 | Non-inverting Input (Amplifier B) | Independent input for second channel; channel separation ≥120 dB prevents crosstalk in stereo audio or dual-sensor systems. |
| 6 | Inverting Input (Amplifier B) | Configurable for inverting gain or active filter topology; input offset drift ≤2 μV/°C stabilizes DC operating point over temperature. |
| 7 | Output (Amplifier B) | Electrically isolated output path; stable with 500 pF capacitive load - eliminates need for isolation resistors in LCD bias or DAC output buffering. |
| 8 | VCC+ (Positive Supply) | Accepts 2.7–12 V; total supply current ≤3.2 mA (max, full temp range) enables multi-channel operation in power-constrained portable devices. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input and output | Enables full dynamic range utilization in 3 V systems - e.g., 0–3 V ADC reference buffers or single-supply microphone preamps without level-shifting circuitry. |
| Low noise: 9 nV/√Hz | Preserves SNR in low-level signal chains - critical for MEMS microphone amplifiers and EEG front-ends where input signals are <10 μV. |
| High output current: 80 mA | Drives 32 Ω headphones directly at 2 Vpp, eliminating discrete output transistors and reducing BOM count in portable speaker designs. |
| Stable with 500 pF capacitive load | Eliminates need for isolation resistors when driving long PCB traces, LCD bias networks, or piezo actuator cables - simplifies layout and improves transient response. |
| Latch-up immunity & 2 kV ESD protection | Withstands 200 mA latch-up current and human-body-model ESD events - suitable for handheld test equipment and field-deployable sensor nodes. |
Applications
| Portable Headphone Amplifier | Industrial Sensor Signal Conditioning |
|---|---|
|
Use Scenario: Battery-powered portable audio player driving 32 Ω dynamic headphones with <100 μW THD+N requirement. IC Role / Device Role / Timing Role: Dual-channel audio line driver providing rail-to-rail output swing and 80 mA peak current per channel. Use Value: Eliminates external output transistors; 9 nV/√Hz noise ensures no audible hiss at 0 dB gain; 4 MHz GBW preserves 20 kHz audio fidelity. |
Use Scenario: Analog front-end for 4–20 mA loop-powered pressure transmitter with millivolt-level bridge output. IC Role / Device Role / Timing Role: Precision instrumentation amplifier input stage with rail-to-rail input common-mode range and low offset drift. Use Value: 2 μV/°C offset drift minimizes calibration drift over –40°C to 125°C; 120 dB channel separation isolates dual-sensor inputs in compact enclosures. |
| Multimedia Speaker Driver | Line Driver for Audio Codec Interface |
|
Use Scenario: Stereo Class AB speaker driver in smart speaker base unit, delivering 1 W into 8 Ω via bridged configuration. IC Role / Device Role / Timing Role: Dual op-amp configured as non-inverting gain stage with 32 Ω load capability per channel. Use Value: 80 mA output current enables direct drive of small speakers; 0.005% THD+N at 1 kHz ensures clean midrange reproduction without post-filtering. |
Use Scenario: Output buffer between stereo DAC and 10 kΩ line input of consumer AV receiver. IC Role / Device Role / Timing Role: Unity-gain rail-to-rail voltage follower isolating DAC output from cable capacitance and load variations. Use Value: 500 pF capacitive load stability prevents peaking or oscillation on 1 m RCA cables; 60 dB CMRR rejects ground-loop induced hum in mixed-signal systems. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual rail-to-rail audio op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV2462IDR | Lower output current (40 mA), higher input bias current (100 pA vs. 100 nA), 6.4 MHz GBW, 17 nV/√Hz noise | Better suited for low-power sensor buffering than headphone drive; requires external boost for 32 Ω loads | Select when ultra-low quiescent current (550 μA/ch) outweighs output drive needs |
| OPA2340UA | Higher noise (20 nV/√Hz), lower output current (30 mA), 5.5 V max supply, 5.5 MHz GBW | Optimized for precision DC-coupled instrumentation, not audio power delivery | Prefer for medical-grade biopotential amplifiers where DC accuracy dominates AC performance |
Compared with TLV2462IDR and OPA2340UA, the TS922IDT uniquely combines 80 mA output drive, 9 nV/√Hz noise, and 3–12 V operation - making it the only option among the three capable of direct 32 Ω headphone drive with studio-grade THD+N in portable battery systems.
Availability
TS922IDT is available at Aetrix Electronics and suitable for portable audio systems, industrial sensor signal conditioning, multimedia speaker drivers, and line-level audio interface circuits requiring stable component supply across extended temperature ranges (–40°C to 125°C).
Supply support for TS922IDT 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, analog ICs, power management devices, and MEMS sensors for industrial, automotive, and consumer markets.
The TS922IDT belongs to ST's precision analog amplifier product line, engineered specifically for low-voltage, low-noise, high-output-current applications in battery-powered audio and portable instrumentation where rail-to-rail operation and capacitive-load stability are mandatory.
FAQ
What is the maximum capacitive load the TS922IDT can drive without compensation?
The TS922IDT is internally compensated and stable with capacitive loads up to 500 pF when driving into 600 Ω series resistance, as verified in Figure 13 of DS1117 Rev 13. This eliminates need for external isolation resistors in LCD bias, DAC output, or long-trace applications - unlike many general-purpose op-amps requiring ≥10 Ω series resistance for stability.
Does the TS922IDT support true single-supply operation down to 2.7 V?
Yes. The TS922IDT guarantees rail-to-rail input common-mode range from VCC– – 0.2 V to VCC+ + 0.2 V and rail-to-rail output swing within 180 mV of each rail at 32 Ω load, even at 2.7 V supply. This enables direct interfacing with 0–2.7 V sensors and ADCs without level-shifting circuitry.
How does the TS922IDT's 80 mA output current translate to real-world load capability?
At 2.7 V supply, TS922IDT delivers 2.63 VOH and 180 mVVOL into 32 Ω (per channel), enabling 2 Vpp undistorted output - sufficient for 125 mW into 32 Ω headphones. Its 80 mA limit is independent of supply voltage, ensuring consistent drive strength across 2.7–12 V operation.
Is the TS922IDT pin-compatible with other dual op-amps in TSSOP8 package?
No. TS922IDT follows standard dual-op-amp TSSOP8 pinout (SO8/TSSOP8 industry convention: Pin 1=A-, 2=A+, 3=Aout, 4=GND, 5=B+, 6=B-, 7=Bout, 8=VCC+), but its internal architecture - including rail-to-rail input stage, BiCMOS output, and 500 pF capacitive-load stability - is not functionally interchangeable with legacy bipolar or JFET-input op-amps without verifying noise, drive, and stability requirements.
TS922IDT 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:
- 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:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
TS922IDT FAQ
1.How can I place an order for TS922IDT through Aetrix?
Please submit a Request for Quotation (RFQ) for TS922IDT 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 TS922IDT reliable?
The price and inventory of TS922IDT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TS922IDT is usually 5 days.
3.What payment methods are accepted for TS922IDT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TS922IDT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TS922IDT?
TS922IDT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TS922IDT 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 TS922IDT?
For technical support, including TS922IDT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TS922IDT requirements.
6.How does Aetrix verify that TS922IDT is sourced from the original manufacturer or authorized distributors?
All TS922IDT 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 TS922IDT meets industry standards.
7.What is the process for return or replacement of TS922IDT?
All TS922IDT units undergo pre-shipment inspection (PSI). If there is an issue with TS922IDT, 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 TS922IDT part is unused and in its original packaging.
Return procedure for TS922IDT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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