Overview
The TS922IDT from STMicroelectronics is a rail-to-rail dual BiCMOS operational amplifier, optimized and fully specified for 3 V and 5 V operations. This device is renowned for its very low noise, low distortion, low offset voltage, and high output current capability, making it an excellent choice for high-quality, low-voltage, or battery-operated audio systems.
Key Specifications
| Parameter | Test Conditions | Min. | Typ. | Max. | Unit |
|---|---|---|---|---|---|
| Operating Supply Voltage | - | 2.7 | - | 12 | V |
| Input Offset Voltage | VCC = 3 V, VCC- = 0 V, Vicm = VCC/2, Tamb = 25 °C | 3 mV (TS922) | 0.9 mV (TS922A) | 1.5 mV (TS922EIJT) | mV |
| Input Offset Voltage Drift | - | - | 2 μV/°C | - | μV/°C |
| Input Offset Current | Vout = VCC/2 | 1 nA | 30 nA | - | nA |
| High Level Output Voltage | RL = 10 kΩ | 2.90 V | - | - | V |
| Low Level Output Voltage | RL = 10 kΩ | 50 mV | - | - | mV |
| Gain Bandwidth Product | RL = 600 Ω | - | 4 MHz | - | MHz |
| Slew Rate | - | 0.7 V/μs | 1.3 V/μs | - | V/μs |
| Equivalent Input Noise Voltage | f = 1 kHz | - | 9 nV/√Hz | - | nV/√Hz |
| Total Harmonic Distortion | Vout = 2 Vp-p, f = 1 kHz, Av = 1, RL = 600 Ω | - | 0.005 % | - | % |
| Output Short-Circuit Current | - | 50 mA | - | 80 mA | mA |
Key Features
- Rail-to-Rail Input and Output: Ensures maximum signal swing and dynamic range.
- Low Noise: 9 nV/√Hz at 1 kHz, ideal for low-noise applications.
- Low Distortion: Total harmonic distortion of 0.005% at 1 kHz.
- High Output Current: Up to 80 mA, capable of driving 32 Ω loads.
- High-Speed: Gain bandwidth product of 4 MHz and slew rate of 1.3 V/μs.
- Operating Voltage Range: From 2.7 V to 12 V.
- Low Input Offset Voltage: Maximum of 0.9 mV for TS922A.
- ESD Internal Protection: 2 kV protection.
- Latch-Up Immunity: Ensures reliable operation.
Applications
- Line Drivers and Actuator Drivers: Suitable for driving low-load impedances.
- Portable Speakers and Headphone Amplifiers: Ideal for battery-operated audio systems.
- Instrumentation: Where low noise is a critical factor.
- Multimedia Systems and Portable Equipment: Such as sound cards and mobile phones.
- Piezoelectric Speaker Drivers: For high-quality audio output.
Q & A
- What is the operating supply voltage range of the TS922IDT?
The TS922IDT operates from 2.7 V to 12 V.
- What is the input offset voltage of the TS922IDT?
The input offset voltage is 3 mV for TS922, 0.9 mV for TS922A, and 1.5 mV for TS922EIJT.
- What is the gain bandwidth product of the TS922IDT?
The gain bandwidth product is 4 MHz.
- What is the slew rate of the TS922IDT?
The slew rate is 1.3 V/μs.
- What is the equivalent input noise voltage of the TS922IDT?
The equivalent input noise voltage is 9 nV/√Hz at 1 kHz.
- What is the total harmonic distortion of the TS922IDT?
The total harmonic distortion is 0.005% at 1 kHz with Av = 1 and RL = 600 Ω.
- What is the output short-circuit current capability of the TS922IDT?
The output short-circuit current is up to 80 mA.
- What are some common applications of the TS922IDT?
Common applications include line drivers, actuator drivers, portable speakers, instrumentation, multimedia systems, and piezoelectric speaker drivers.
- Does the TS922IDT have ESD protection?
Yes, the TS922IDT has internal ESD protection up to 2 kV.
- Is the TS922IDT latch-up immune?
Yes, the TS922IDT is latch-up immune.
