This document introduces a new 24-Bit, 192 kHz Stereo Audio CODEC from Cirrus Logic company. The product has high performance, selectable serial audio interface formats, control output for external muting, digital de-emphasis, Popguard technology, multi-bit ∆Σ conversion, digital volume control and so on.
The CS4270 audio CODEC provides high‑performance 24‑bit stereo conversion for both analog‑to‑digital (A/D) and digital‑to‑analog (D/A) paths, delivering a 105 dB dynamic range and –95 dB THD+N. It supports sample rates from 4 kHz up to 216 kHz and offers selectable serial audio interface formats such as left‑justified, right‑justified, and I²S, with optional de‑emphasis for 44.1 kHz audio.
The document includes detailed pin descriptions for both software‑mode and stand‑alone mode, electrical specifications, thermal characteristics, typical connection diagrams, and application notes for DVD recorders, digital TVs, set‑top boxes, effects processors, and automotive audio systems. Power supply requirements, absolute maximum ratings, and recommended grounding practices are also provided.
| Analog supply voltage (VA) min/typ/max | 3.1 V / 5.0 V / 5.25 V |
|---|---|
| Digital supply voltage (VD) min/typ/max | 3.1 V / 3.3 V / 5.25 V |
| Control Port Interface voltage (VLC) min/typ/max | 1.7 V / 3.3 V / 5.25 V |
| Ambient operating temperature (CZZ) range | -10 °C to +70 °C |
| Ambient operating temperature (DZZ) range | -40 °C to +85 °C |
| Maximum junction temperature | 135 °C |
| Dynamic range | 105 dB |
| Total harmonic distortion + noise (THD+N) | -95 dB |
The CS4270 provides a dynamic range of 105 dB.
It supports audio sample rates from 4 kHz up to 216 kHz.
The analog supply (VA) must be between 3.1 V and 5.25 V, with a typical value of 5.0 V.
Integrated level translators allow direct interfacing with logic levels from 1.8 V to 5 V.