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STMicroelectronics TS922IYDT
- Part No.:
- TS922IYDT
- Manufacturer:
- STMicroelectronics
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TS922IYDT.pdf
- Description:
- IC OPAMP GP 2 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,184
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Product details
Overview
TS922IYDT 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 in automotive-grade SO8 packaging.
For engineers reviewing the TS922IYDT datasheet, TS922IYDT pinout, TS922IYDT application, or TS922IYDT equivalent, key selection criteria include rail-to-rail operation at 2.7–12 V supply, low 900 μV max input offset (TS922A grade), latch-up immunity, ESD protection (2 kV HBM), and stability with up to 500 pF capacitive loads.
Technical Context
The TS922IYDT integrates two independent BiCMOS op-amps in a single SO8 package, each featuring complementary input stages enabling true rail-to-rail common-mode input range (VCC− − 0.2 V to VCC+ + 0.2 V) and rail-to-rail output swing. Its architecture supports stable unity-gain operation with 68° phase margin into 600 Ω + 100 pF loads.
It operates across −40 °C to +125 °C with total supply current of 2–3.2 mA per amplifier and exhibits 120 dB channel separation, 80 dB CMRR at 25 °C, and 85 dB SVRR - making it suitable for precision instrumentation and noise-sensitive multimedia signal paths where crosstalk and power supply coupling must be minimized.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 2.7 V to 12 V - enables direct integration into single-cell Li-ion (3.0–4.2 V) and dual-cell alkaline (3.0–3.6 V) portable systems without LDO pre-regulation. |
| Gain-Bandwidth Product | 4 MHz - supports audio bandwidth extension beyond 20 kHz with ≥10× closed-loop gain stability. |
| Slew Rate | 1 V/μs - ensures <0.005% THD at 1 kHz with 2 Vpp output into 600 Ω, critical for low-distortion headphone drive. |
| Input Noise Density | 9 nV/√Hz at 1 kHz - preserves dynamic range in microphone preamp and active filter stages where SNR >100 dB is required. |
| Output Current | 80 mA per channel - directly drives 32 Ω speakers or low-Z cables without external buffer transistors. |
| Input Offset Voltage | ≤900 μV (TS922A grade) - minimizes DC error in precision sensor signal conditioning and active crossover networks. |
| Capacitive Load Drive | Stable up to 500 pF - allows direct connection to long PCB traces or LCD panel interfaces without isolation resistors. |
Pinout & Package
TS922IYDT is housed in an automotive-grade SO8 (Small Outline 8-pin) package compliant with ECOPACK® environmental standards. The package features gull-wing leads, 1.27 mm pitch, and 4.8–5.0 mm body width.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Inverting Input (Amplifier A) | Differential input node for first op-amp; accepts rail-to-rail common-mode voltage (VCC− − 0.2 V to VCC+ + 0.2 V). |
| 2 | Non-inverting Input (Amplifier A) | Reference input for Amplifier A; matched bias current (15–100 nA) minimizes offset drift in high-Z sensor interfaces. |
| 3 | Output (Amplifier A) | Class-AB output stage delivering ±80 mA short-circuit current; rail-to-rail swing enables full utilization of 3 V supply headroom. |
| 4 | VCC− (Ground) | Power return for both amplifiers; internal ESD protection (2 kV HBM) referenced to this pin. |
| 5 | Non-inverting Input (Amplifier B) | Second amplifier input; electrically isolated from Amplifier A with 120 dB channel separation. |
| 6 | Inverting Input (Amplifier B) | Feedback node for Amplifier B; supports unity-gain stable configuration with 600 Ω load + 100 pF. |
| 7 | Output (Amplifier B) | Independent output capable of driving 32 Ω loads to ±2.63 V at 3 V supply - sufficient for stereo earpiece drive. |
| 8 | VCC+ (Supply) | Positive supply rail; supports operation from 2.7 V (battery cutoff) to 12 V (automotive transients); thermal resistance RthJA = 125 °C/W. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail I/O | Enables full 0–3 V output swing at 3 V supply, maximizing dynamic range in low-voltage portable audio without level-shifting circuitry. |
| Low 9 nV/√Hz noise | Preserves SNR in microphone preamplifiers and active filters where input-referred noise dominates system noise floor. |
| 80 mA output drive | Eliminates need for discrete output buffers when driving 32 Ω headphones or piezoelectric actuators in portable speakers. |
| 4 MHz GBP & 1 V/μs SR | Supports wideband active crossovers and ultrasonic driver control (e.g., 20–100 kHz Class-D gate drive pre-conditioning). |
| Latch-up immunity | Withstands 200 mA transient overcurrent without destructive failure - critical for automotive infotainment systems exposed to load dump events. |
Applications
| Portable Speaker Amplifier | Automotive Line Driver |
|---|---|
|
Use Scenario: Dual-channel Class-AB headphone/speaker driver in Bluetooth-enabled portable speaker with 3.7 V Li-ion battery. IC Role / Device Role / Timing Role: Dual op-amp configured as non-inverting gain stage (Av = 2) with rail-to-rail output swing to maximize 3 V supply utilization. Use Value: 80 mA per channel drives 32 Ω transducers directly; 9 nV/√Hz noise ensures <105 dB SNR at 1 mW output. |
Use Scenario: Balanced analog audio line driver in automotive head unit feeding rear-seat entertainment displays. IC Role / Device Role / Timing Role: Single amplifier per channel used in differential driver configuration with matched feedback networks. Use Value: 120 dB channel separation prevents crosstalk between left/right channels; −40 °C to +125 °C rating meets AEC-Q100 Grade 2 requirements. |
| Instrumentation Signal Conditioning | Multimedia Audio Codec Interface |
|
Use Scenario: Low-noise front-end amplifier for MEMS microphone array in industrial sound-level meter. IC Role / Device Role / Timing Role: First-stage preamplifier with 100 kΩ input impedance and 40 dB gain, AC-coupled to ADC. Use Value: 900 μV max input offset minimizes calibration drift; 9 nV/√Hz noise contributes <1.5 μV RMS integrated noise over 20 Hz–20 kHz. |
Use Scenario: Output buffer for stereo DAC in smart TV audio subsystem requiring 2 Vpp line-level signal into 10 kΩ load. IC Role / Device Role / Timing Role: Unity-gain voltage follower per channel, decoupling DAC output from cable capacitance. Use Value: 4 MHz GBP and 68° phase margin ensure stability with 100 pF cable capacitance; THD <0.005% maintains 16-bit+ audio fidelity. |
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 |
|---|---|---|---|
| TS922IDT | Same silicon, commercial temperature range (−40 °C to +105 °C) vs. TS922IYDT's extended −40 °C to +125 °C automotive grade. | Not qualified to AEC-Q100; unsuitable for under-hood or dashboard-mounted automotive modules. | Select TS922IDT only for cost-sensitive consumer electronics where extended temperature operation is unnecessary. |
| LMV358IDR | Lower GBP (1 MHz), higher input offset (3 mV typ), no latch-up immunity, and 45 mA output current - lacks drive strength and robustness. | Requires external buffer for 32 Ω loads; not recommended for portable speaker output stages or automotive environments. | Choose LMV358IDR only for low-speed sensor buffering where noise and drive capability are secondary to cost. |
Compared with TS922IDT, TS922IYDT adds guaranteed operation to +125 °C and AEC-Q100 qualification, while LMV358IDR trades bandwidth, noise, and output drive for lower price - making TS922IYDT the sole choice for automotive audio and high-fidelity portable amplification.
Availability
TS922IYDT is available at Aetrix Electronics and suitable for automotive infotainment systems, portable speaker designs, industrial instrumentation signal chains, and multimedia audio interfaces requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for TS922IYDT 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 sensors for automotive, industrial, and consumer markets.
The TS922 product line targets high-fidelity, low-voltage analog signal processing - specifically engineered for rail-to-rail performance, low-noise audio amplification, and robust operation in battery-powered and automotive environments.
FAQ
What is the maximum capacitive load the TS922IYDT can drive while remaining stable?
The TS922IYDT is specified stable with capacitive loads up to 500 pF when driving a 600 Ω resistive load, as confirmed by phase margin measurements (68°) in the datasheet. Driving larger capacitive loads requires series isolation resistors or careful compensation network design to avoid peaking or oscillation.
Does TS922IYDT support single-supply operation below 3 V?
Yes - TS922IYDT operates down to 2.7 V supply, making it compatible with partially discharged single-cell Li-ion batteries (nominal 3.7 V, cutoff ~2.8 V). Its rail-to-rail inputs accept signals from 0 V (VCC−) and outputs swing within 180 mV of rails at 3 V, preserving usable signal headroom.
How does the TS922A grade differ from standard TS922 in TS922IYDT?
TS922IYDT uses the TS922A die variant, guaranteeing maximum input offset voltage of 900 μV (vs. 3 mV for standard TS922) and tighter offset drift (2 μV/°C). This enables precision DC-coupled applications like active filters and sensor signal conditioning without manual nulling circuitry.
Is thermal derating required for continuous 80 mA output current in SO8 package?
Yes - at ambient temperatures above 85 °C, output current must be reduced due to thermal limits. With RthJA = 125 °C/W and PD = 80 mA × (VCC − VOUT), junction temperature exceeds 150 °C unless board-level copper area or airflow mitigates heating. Derating curves are provided in DS1117 Figure 4.
TS922IYDT 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
TS922IYDT FAQ
1.How can I place an order for TS922IYDT through Aetrix?
Please submit a Request for Quotation (RFQ) for TS922IYDT 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 TS922IYDT reliable?
The price and inventory of TS922IYDT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TS922IYDT is usually 5 days.
3.What payment methods are accepted for TS922IYDT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TS922IYDT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TS922IYDT?
TS922IYDT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TS922IYDT 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 TS922IYDT?
For technical support, including TS922IYDT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TS922IYDT requirements.
6.How does Aetrix verify that TS922IYDT is sourced from the original manufacturer or authorized distributors?
All TS922IYDT 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 TS922IYDT meets industry standards.
7.What is the process for return or replacement of TS922IYDT?
All TS922IYDT units undergo pre-shipment inspection (PSI). If there is an issue with TS922IYDT, 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 TS922IYDT part is unused and in its original packaging.
Return procedure for TS922IYDT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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