TDA2050 UTC, amplifier testing. Characteristics Measurement
| Testing device | TDA2050 UTC amplifier |
| Sampling mode | 24-bit, 48 kHz |
| Interface | E-MU1616m |
| Testing chain | E-MU1616m>TDA2050 UTC amplifier>E-MU1616m |
| Supply voltage bipolar | -25V...0...+25V |
| Load resistance | 4 Ohm |
| Testing power | 9W |
| Maximum power | 34W |
| 20 Hz - 20 kHz filter | ON |
| Normalize amplitude | ON |
| Level change | -0.4 dB / -0.4 dBБ |
| Mono mode | OFF |
| Calibration singal, Hz | 1000 |
| Polarity | correct/correct |
Summary
| Frequency response (from 40 Hz to 15 kHz), dB | +0.02, -0.08 |
Excellent |
| Noise level, dB (A) | -101.7 |
Excellent |
| Dynamic range, dB (A) | 101.7 |
Excellent |
| THD, % | 0.017 |
Good |
| THD + Noise, dB (A) | -73.2 |
Average |
| IMD + Noise, % | 0.020 |
Very good |
| Stereo crosstalk, dB | -73.5 |
Good |
| IMD at 10 kHz, % | 0.023 |
Good |
| General performance | Very good |
Frequency response
Left |
Right |
|
| From 20 Hz to 20 kHz, dB | -0.15, +0.02 |
-0.13, +0.02 |
| From 40 Hz to 15 kHz, dB | -0.08, +0.02 |
-0.07, +0.02 |
Noise level
Left |
Right |
|
| RMS power, dB | -100.4 |
-100.0 |
| RMS power (A-weighted), dB | -101.8 |
-101.6 |
| Peak level, dB FS | -79.9 |
-78.9 |
| DC offset, % | -0.0 |
-0.0 |
Dynamic range
Left |
Right |
|
| Dynamic range, dB | +100.5 |
+100.2 |
| Dynamic range (A-weighted), dB | +101.8 |
+101.6 |
| DC offset, % | +0.00 |
-0.00 |
THD + Noise (at -3 dB FS)
Left |
Right |
|
| THD, % | 0.01873 |
0.01489 |
| THD + Noise, % | 0.01885 |
0.01508 |
| THD + Noise (A-weighted), % | 0.02430 |
0.01941 |
Intermodulation distortion
Left |
Right |
|
| IMD + Noise, % | 0.02002 |
0.01992 |
| IMD + Noise (A-weighted), % | 0.01305 |
0.01463 |
Stereo crosstalk
Left |
Right |
|
| Crosstalk at 100 Hz, dB | -84 |
-78 |
| Crosstalk at 1000 Hz, dB | -79 |
-66 |
| Crosstalk at 10000 Hz, dB | -65 |
-45 |
IMD (swept tones)
Left |
Right |
|
| IMD + Noise at 5000 Hz, | 0.03046 |
0.03579 |
| IMD + Noise at 10000 Hz, | 0.01847 |
0.01892 |
| IMD + Noise at 15000 Hz, | 0.01985 |
0.01726 |
Conclusions
| The first and main question: how similar are the TDA2050 UTC and TDA2050 STM? Manufacturer information UTC (Unisonic Technologies Company Limited): Unisonic Technologies Company Limited was founded in 1990, and it is a supplier of products for high-tech semiconductor devices and IC design. The company is headquartered in Taiwan and has production facilities throughout China and in Taiwan. In other words, UTC is an official company with its own brand and thousands of employees. |
| Second question: Did UTC officially manufacture the TDA2050 chip? And easily find TDA2050 from UNISONIC TECHNOLOGIES CO., LTD. In other words, an official company that officially produces chip TDA2050. It remains to compare the Datasheet from UTC and TI (let's compare the main electrical characteristics): |
|
| Obviously, all the characteristics in the official UTC document are absolutely identical to the characteristics in the datasheet from TI. |
| Considering the fact that harmonic distortion while working on a load can be called the "handwriting" of an amplifier, there is Last question: how similar is the harmonic distortion of the TDA2050 UTC and the TDA2050 STM? |
|
| Harmonic distortions are quite similar, but there are still differences and they consist in reducing the level of odd harmonics in the TDA2050 UTC chip. |
|
Summary: TDA2050 UTC is almost a complete copy of the original TDA2050 STM with revision, in the form of a decrease in the level of odd harmonics The only drawback of the TDA2050 UTC is power. You can buy an amplifier in our store kit-amp.com This module can be recommended for high quality bookshelf speakers with woofer up to 16cm and full range speakers. |
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