Overview
The TDA8579T/N1SJ, produced by NXP USA Inc., is a dual common-mode rejection differential line receiver. This integrated circuit is designed primarily for automotive and audio applications, featuring two identical differential amplifiers with a fixed voltage gain of 0 dB. The device is notable for its high common-mode rejection, which effectively eliminates ground noise, making it suitable for environments with significant electrical interference. The TDA8579T/N1SJ also includes a class AB output stage with low output impedance and high input impedance, ensuring reliable signal transmission and reception.
Key Specifications
| Parameter | Conditions | Min | Max | Unit |
|---|---|---|---|---|
| VCC (Supply Voltage) | - | - | 18 | V |
| IORM (Repetitive Peak Output Current) | - | - | 40 | mA |
| Vsc (AC and DC Short-Circuit Safe Voltage) | - | - | 18 | V |
| Tstg (Storage Temperature) | -55 | 150 | °C | |
| Tamb (Ambient Temperature) | -40 | 85 | °C | |
| Tj (Maximum Junction Temperature) | - | 150 | °C |
Key Features
- High common-mode rejection ratio, effective at both low and high frequencies.
- Fixed voltage gain of 0 dB.
- Class AB output stage with low output impedance.
- High input impedance.
- Quick-charge circuit to reduce settling time of DC input voltage.
- Protection against high electrostatic discharge conditions (4000 V, 150 pF, 150 Ω).
Applications
The TDA8579T/N1SJ is primarily used in automotive and audio applications where high common-mode rejection is crucial. It is suitable for receiving line input signals in environments with significant electrical noise. Other potential applications include professional audio equipment, industrial control systems, and any scenario requiring reliable differential signal reception with minimal noise interference.
Q & A
- What is the primary function of the TDA8579T/N1SJ? The TDA8579T/N1SJ is a dual common-mode rejection differential line receiver designed to receive line input signals with high common-mode rejection.
- What is the voltage gain of the TDA8579T/N1SJ? The voltage gain is fixed at 0 dB.
- What type of output stage does the TDA8579T/N1SJ have? The output stage is a class AB stage with low output impedance.
- What is the maximum supply voltage for the TDA8579T/N1SJ? The maximum supply voltage is 18 V.
- What is the maximum repetitive peak output current? The maximum repetitive peak output current is 40 mA.
- What is the storage temperature range for the TDA8579T/N1SJ? The storage temperature range is from -55°C to 150°C.
- Does the TDA8579T/N1SJ have electrostatic discharge protection? Yes, it is protected against high electrostatic discharge conditions (4000 V, 150 pF, 150 Ω).
- What is the purpose of the quick-charge circuit in the TDA8579T/N1SJ? The quick-charge circuit is included to charge the input capacitor within 0.2 seconds, reducing the settling time of the DC input voltage.
- Is the TDA8579T/N1SJ still in production? No, the TDA8579T/N1SJ is obsolete and no longer manufactured.
- What are some common applications for the TDA8579T/N1SJ? Common applications include automotive systems, professional audio equipment, and industrial control systems where high common-mode rejection is necessary.
