Some analog parts drive the outside world rather than condition it: audio into a speaker, video down a cable, a tuning current into a filter, an isolated gate clock from a transformer. This guide covers the COSINE (科山芯创) audio, video, transconductance and transformer-driver parts we stock.
1. Audio power amplifier
Drives a speaker or similar low-impedance load directly.
| Part | Notes | Link |
|---|---|---|
| COS6112 (TPA6112) | Audio power amplifier, stereo | COS6112 (TPA6112) |
2. Video driver / buffer
Restores and drives a video signal down a cable.
| Part | Notes | Link |
|---|---|---|
| COS6143SR (FMS6143) | Video driver / buffer, multi-channel | COS6143SR (FMS6143) |
3. Transconductance (OTA) amplifier
Voltage-to-current block for filters and voltage-controlled circuits.
| Part | Notes | Link |
|---|---|---|
| COSLM13700DT (LM13700) | Transconductance (OTA) amplifier | COSLM13700DT (LM13700) |
4. Transformer drivers
Drive an isolated gate or low-power transformer from a logic signal.
| Part | Notes | Link |
|---|---|---|
| COSN6505C | Transformer driver, original COSINE part | COSN6505C |
| COS6505B (SN6505B) | Transformer driver | COS6505B (SN6505B) |
Selection checklist
- For audio, set gain and load impedance from the speaker and supply.
- For video, check bandwidth and drive into your cable impedance.
- For OTA, define the control-current to transconductance relationship your loop needs.
- For transformer drivers, confirm the transformer turns ratio and current.
See the wider amplifiers range. Send us your load, supply and package for a quote.
Frequently asked questions
What is the difference between an audio power amplifier and a driver?
An audio power amplifier delivers current into a low-impedance load such as a speaker, with the gain and stability to do so directly. A line driver or buffer raises a small signal to a level and drive strength a cable or following stage needs, without supplying speaker current.
What does a video driver do?
A video driver buffers and restores the level, impedance and slew of a video signal so it travels down a cable without losing sync or detail. The key specs are bandwidth, slew rate and the drive capability into the cable load.
What is a transconductance (OTA) amplifier?
An OTA converts input voltage to output current, with a control pin setting the transconductance. That makes it useful in filters, multipliers and voltage-controlled circuits where you want to tune behaviour electronically.
Are these COSINE parts drop-in replacements?
They are designed against the pinout and function of the referenced devices. Confirm package, pinout and electrical limits on the datasheet for your application before volume commitment.
About us & trademarks: JTDZ Tech (Shenzhen Jingteng Electronics Technology Co., Ltd.) is an independent distributor of electronic components. We are not an authorised distributor or representative of the manufacturers named in this article. Manufacturer and part names are used for indicative purposes only, to help identify the components discussed; all trademarks remain the property of their respective owners. Always verify specifications against the official datasheet before design-in or purchase.
Recommended next steps
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