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UDA1350ATS
General description
Available in two versions:
- UDA1350ATS:
- only IEC 60958 input to DAC in SSOP28 package.
- UDA1350AH:
- full featured version in QFP44 package.
A lock indication signal is available on pin LOCK indicating that the IEC 60958 decoder is locked. This pin is also used to indicate whether PCM data is applied to the input or not. In the event non-PCM data has been detected, the device indicates out-of-lock.
By default the DAC output and the data output interface are muted when the decoder is out-of-lock. However, this setting can be overruled in the L3 control mode.
Features
General
- 2.7 to 3.6 V power supply
- Integrated digital filter and Digital-to-Analog Converter (DAC)
- 256fs system clock output
- 20-bit data path in interpolator
- High performance
- No analog post filtering required for DAC.
Control
- Controlled either by means of static pins or via the L3 microcontroller interface.
IEC 60958 input
- On-chip amplifier for converting IEC 60958 input to CMOS levels
- Lock indication signal available on pin LOCK
- Lock indication signal combined on-chip with the Pulse Code Modulation (PCM) status bit; in case non-PCM has been detected pin LOCK indicates out-of-lock
- Key channel-status bits available via L3 interface (lock, pre-emphasis, audio sample frequency, two channel PCM indication and clock accuracy).
Digital sound processing and DAC
- Automatic de-emphasis when using IEC 60958 input with 32.0, 44.1 and 48.0 kHz audio sample frequencies
- Soft mute by means of a cosine roll-off circuit selectable via pin MUTE or the L3 interface
- dB linear volume control with 1 dB steps from 0 dB to -60 dB and -¥ dB
- Bass boost and treble control in L3 control mode
- Interpolating filter (fs to 128fs) by means of a cascade of a recursive filter and a FIR filter
- Third order noise shaper operating at 128fs generates the bitstream for the DAC
- Filter stream digital-to-analog converter.
Applications
- Digital audio systems.
Related applications
50-60 Hz CRT integrated DTV (TV210D)
Set-top box - MMS functionality
Design support
Support Documents
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