The UDA1309H is a single chip stereo analog-to-digital and digital-to-analog converter employing bitstream conversion techniques. The device is eminently suitable for use in low-power portable digital audio equipment which incorporates recording and playback functions.
The Philips UDA1309H is a single-chip stereo analog-to-digital (ADC) and digital-to-analog (DAC) converter employing bitstream conversion techniques. It is designed for use in low-power portable digital audio equipment, incorporating both recording and playback functions. The device features a low-power design with multiple power-down modes and an integrated high-pass filter to cancel DC offset in the ADC path.
The UDA1309H supports various digital input/output formats, including 16-bit and 18-bit LSB-justified and I2S-bus formats. It accommodates system clock frequencies of 192 kHz, 256 kHz, or 384 kHz. The DAC requires only one external capacitor for post-filtering due to its Bitstream Continuous Calibration (BCC) principle, while the ADC includes an overload detector for automatic recording level adjustment.
| Package Type | QFP44 |
|---|---|
| Operating Ambient Temperature | -20 to +75 °C |
| ADC Analog Supply Voltage | 4.5 to 5.5 V |
| ADC Analog Supply Current | 9 to 13.5 mA |
| ADC Total Harmonic Distortion plus Noise | -85 dB |
| ADC Signal-to-Noise Ratio | -95 dB |
| DAC Total Harmonic Distortion plus Noise | -90 to -82 dB |
| DAC Signal-to-Noise Ratio | -104 dB |
| System Clock Frequencies | 192 kHz, 256 kHz, or 384 kHz |
The UDA1309H is available in a QFP44 plastic quad flat package with 44 leads.
No, the DAC requires only one capacitor for post-filtering to meet out-of-band suppression requirements.
The device accommodates 16-bit and 18-bit LSB-bus and LSB justified formats.