آی سی TDA1545A یک مبدل دیجیتال به آنالوگ با پایه های DIP و با بسته بندی DIP-8 است و از اولین کانورترهای DAC با کالیبراسیون متناوب می باشد و برای تغذیه نیاز به ولتاژ 3 تا 5.5 ولت دارد و این آی سی علاوه بر توان مصرفی پایین، میزان اعوجاج کمی دارد و رزولوشن آن 16 بیت است و برای کاربردهای مانند سیستم های خودران و کاربردهای صنعتی و ارتباطی مناسب است.
Description:
The TDA1545A is the first device of a new generation of the digital-to-analog converters which embodies the innovative technique of continuous calibration. The largest bit-currents are repeatedly generated by one single current reference source. This duplication is based upon an internal charge storage principle having an accuracy insensitive to ageing, temperature and process variations.
The device is fabricated in a 1.0 µm CMOS process and features an extremely low power dissipation, small package size and easy application. Furthermore, the accuracy of the high coarse current combined with the implemented symmetrical offset decoding method preclude zero-crossing distortion and ensures high quality audio reproduction. Therefore, the continuous calibration digital-to-analog converter is eminently suitable for use in (portable) digital audio equipment.
Application:
automotive systems
industrial
communications
consumer markets
Specifications:
DIP8
supply voltage: 3 ~ 5.5v
supply current: 4mA
SNR: 101dB
Pw: 20mW
Low power consumption
Low total harmonic distortion
Wide dynamic range (16-bit resolution)
Continuous calibration concept
Easy application: single 3 to 5.5 V rail power supply and
output- and bias current are proportional to the supply voltage
Fast settling time permits 2×, 4× and 8× oversampling(serial input) or double speed operation at 4×oversampling
Wide operating temperature range of −40 to +85 °C
Compatible with most of the Japanese input formats: time multiplexed, two's complement and TTL
No zero crossing distortion.