Philips Semiconductors
Noise shaping filter DAC
Product specification
TDA1306T
FEATURES
General
• Double-speed mode
• Digital volume control
• Soft mute function
• 12 dB attenuation
• Low power dissipation
• Digital de-emphasis
• TDA1305T pin compatible.
Easy application
• Voltage output
• Only 1st-order analog post-filtering required
• Operational amplifiers and digital filter integrated
• Selectable system clock (fsys) 256fs or 384fs
• I2S-bus (fsys = 256fs) or 16, 18 or 20 bits LSB fixed
serial input format (fsys = 384fs)
• Single rail supply.
High performance
• Superior signal-to-noise ratio
• Wide dynamic range
• No zero crossing distortion
• Inherently monotonic
• Continuous calibration digital-to-analog conversion
combined with noise shaping technique.
GENERAL DESCRIPTION
The TDA1306T is a dual CMOS digital-to-analog
converter with up-sampling filter and noise shaper.
The combination of oversampling up to 4fs, noise shaping
and continuous calibration conversion ensures that only
simple 1st-order analog post-filtering is required.
The TDA1306T supports the I2S-bus data input mode
(fsys = 256fs) with word lengths of up to 20 bits and the
LSB fixed serial data input format (fsys = 384fs) with word
lengths of 16, 18 or 20 bits. Two cascaded IIR filters
increase the sampling rate 4 times.
The DACs are of the continuous calibration type and
incorporate a special data coding. This ensures a high
signal-to-noise ratio, wide dynamic range and immunity to
process variation and component ageing.
Two on-board operational amplifiers convert the
digital-to-analog current to an output voltage.
ORDERING INFORMATION
TYPE NUMBER
TDA1306T
NAME
SO24
PACKAGE
DESCRIPTION
plastic small outline package; 24 leads; body width 7.5 mm.
VERSION
SOT137−1
1998 Jan 06
2