CS42L52-CNZ

CS42L52-CNZ is a Cirrus Logic two-channel stereo audio CODEC intended for portable/mobile devices. It combines a DAC and ADC with a built‑in headphone driver and mic bias in a compact package, plus digital audio interface logic.
Key points:
- Audio path: 24-bit DAC/ADC, stereo (left/right channels).
- Interfaces: supports I2S or PCM formats; master/slave operation.
- Performance: suitable for up to 96 kHz sampling, low-power operation, compact footprint.
- Features often used in devices: headphone driver, programmable digital volume, mute, and basic audio controls.
- Power: designed for battery-powered systems with a few-volt supply (typical mobile voltage ranges).
- -CNZ suffix: indicates a specific Cirrus Logic package/variant (RoHS-compliant, particular pinout and footprint) used for procurement and board design.
Typical uses: smartphones, tablets, wearables, Bluetooth headsets, and other portable audio appliances needing compact, efficient stereo CODEC with a headphone output.

Functionally equivalent audio CODECs (stereo DAC + headphone amp / similar features) include:
- TI TLV320AIC3254 (TLV320 family)
- Wolfson/Cirrus WM8960
- Maxim MAX98090
- AKM AK4452 / AK4556
Note: these are functional alternatives, not guaranteed pin‑for‑pin drop‑ins—verify datasheets for signal chains, power, interfaces and packaging before substituting.

Key features of CS42L52-CNZ (Cirrus Logic):
- 2-channel stereo CODEC with integrated DAC and ADC
- 24-bit audio resolution; supports standard sampling rates via I2S/PCM interfaces
- Flexible digital interface: I2S, left-justified, PCM
- Integrated headphone driver and microphone bias/preamp
- Analog paths: mic/line input, headphone/speaker output; programmable gains
- Flexible routing and mixing; digital volume control and mute; de-emphasis
- On-chip clocking: supports external clock and/or internal PLL
- Power management: multiple low-power modes for standby and wake
- Small CNZ package suitable for mobile/embedded designs
Note: for exact supported sample rates, voltage ranges, and register details, refer to the latest datasheet.

The CS42L52‑CNZ is supplied in a 24‑pin CNZ (LFCSP/QFN style) package. Key pin functions (concise):
- Power/Ground: AVDD, DVDD, VREF, AGND, DGND (analog/digital supplies and grounds)
- Clocks: MCLK (master clock), BCLK (bit clock), LRCLK (word/left‑right clock)
- Digital audio: SDIN (serial audio data input) / SDOUT (serial audio data output depending on mode)
- Control: SDA (I2C data), SCL (I2C clock), RESET (hardware reset), PDN/EN (power‑down/enable)
- Analog audio I/O: LOUT+/LOUT–, ROUT+/ROUT– (stereo DAC/headphone outputs or single‑ended L/R outputs), HP_L/HP_R (headphone driver outputs if present)
- Misc: MFD/INT or GPIO pins and HP_DET (headphone detect) depending on configuration
For exact pin names, assignments and electrical specs consult the CS42L52 datasheet.

Manufacturer: Cirrus Logic, Inc.
Type of company: Cirrus Logic is an American fabless semiconductor firm (headquartered in Austin, Texas) that designs analog and mixed‑signal integrated circuits—particularly high‑performance audio codecs, DACs/ADCs, amplifiers and voice/audio processing ICs for consumer and professional electronics.

CS42L52-CNZ is a stereo CODEC with an integrated headphone driver, suitable for portable and consumer audio. Typical application areas include:
- Mobile devices: smartphones, tablets, portable media players
- Personal audio accessories: headsets, earphones, docking stations, portable speakers
- Home entertainment: mini Hi‑Fi systems, sound bars, TVs
- Embedded/IoT audio: smart speakers, voice assistants, set‑top boxes
- Automotive infotainment and human‑machine interfaces requiring high‑quality stereo audio

The CS42L52‑CNZ is supplied in a 32‑lead QFN/LFCSP style package (5.0 mm × 5.0 mm with exposed thermal pad).