24-bit audio DAC a power miser

Analogue, Mixed Signal, LSI

Analog IC suppliers

Digital IC suppliers

Microwave semiconductor & tube suppliers

printer friendly version

5 March 2008 Analogue, Mixed Signal, LSI

STMicroelectronics has announced a very high performance 24-bit audio DAC (digital to analog converter) that is intended for the mobile music market and provides 103 dB signal-to-noise ratio through the whole audio path, while also embedding the company's innovative playback time extender (PTE) processing scheme to minimise power consumption. The single-chip STw5210 audio solution also integrates power management circuitry to simplify system design and enable direct connection to a battery, and is available in small TFBGA and VFQFPN packages.

The new DAC, with Line and Headset outputs, meets the increasing demand for mobile music handsets to provide higher audio quality coupled with longer playing time. Normally an increase in quality means increased power consumption, due to the additional processing required. However, the STw5210's embedded PTE block allows music to be played autonomously, driven by the phone's 32 kHz clock while the rest of the platform is switched into a power-saving state. Overall, power consumption is reduced dramatically, therefore increasing battery life and playback time without compromising audio quality, making the chip ideal for mobile phone applications.

Easy system implementation, minimum bill of materials (BOM), and a very small footprint are ensured by integrated power management, eliminating the need for an external voltage regulator, and the built-in 50 mW headset amplifier, which operates without coupling capacitors.

Share this article:

Combining a LPF and ADC driver for a 20 Vp-p signal
Altron Arrow Analogue, Mixed Signal, LSI
A mixed-signal ADC driver circuit’s optimum performance depends on multiple variables: the driver’s settling time, the RC filter’s time constant, driving impedance, and the ADC sampling capacitor’s kickback current, all interact during acquisition time and contribute towards sampling errors.

Read more...

Pressure sensor with NextNav certification
EBV Electrolink Analogue, Mixed Signal, LSI
STMicroelectronics’ LPS22DF pressure sensor has received a NextNav certification, which guarantees performance and reliability for geolocation and other types of applications.

Read more...

Reference design for Raspberry Pi analogue I/O
Analogue, Mixed Signal, LSI
Analogue Devices has published a reference design for ±10 V analogue input and ±15 V analogue output for Raspberry Pi platforms.

Read more...

Multi-zone distance sensor with 90° field of view
Avnet Silica Analogue, Mixed Signal, LSI
STMicroelectronics has revealed a new FlightSense multi-zone distance sensor, with 90° field of view, to bring lifelike situational awareness to applications like home automation, computers, robots, and smart equipment.

Read more...

Six-axis IMU with Qvar sensing channel
Altron Arrow Analogue, Mixed Signal, LSI
The LSM6DSV16X from STMicroelectronics is a high-performance, low-power six-axis IMU, featuring a three-axis digital accelerometer and a three-axis digital gyroscope.

Read more...

Bidirectional current-sense amplifier with PWM
RS South Africa Analogue, Mixed Signal, LSI
The MAX49925 from Analogue Devices is a bidirectional current-sense amplifier (CSA) with an input common-mode range that extends from -40 to 76 V, making it suitable for 48 V HEV applications where there are large automotive transients.

Read more...

Categories

Analogue, Mixed Signal, LSI

24-bit audio DAC a power miser

Further reading:

Publications by Technews