UDA1342TSDB NXP Semiconductors, UDA1342TSDB Datasheet - Page 10

• Manufacturer Part Number: UDA1342TSDB
• Description: Audio CODECs AUDIO CODEC MINIDISC
• Manufacturer: NXP Semiconductors

Specifications of UDA1342TSDB

• Number Of Adc Inputs: 4
• Number Of Dac Outputs: 2
• Conversion Rate: 110 KSPs
• Interface Type: Serial (I2C), L3
• Resolution: 24 bit
• Operating Supply Voltage: 2.7 V to 3.6 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Package / Case: SSOP-28
• Minimum Operating Temperature: - 40 C
• Number Of Channels: 6
• Snr: 100 dB
• Supply Current: 20 mA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: UDA1342TS/N1,512

NXP Semiconductors
8.8
The 5th-order noise shaper operates at 64f
in-band quantization noise to frequencies well above the
audio band. This noise shaping technique enables high
signal-to-noise ratios to be achieved. The noise shaper
output is converted into an analog signal using a Filter
Stream Digital-to-Analog Converter (FSDAC).
8.9
The FSDAC is a semi-digital reconstruction filter that
converts the 1-bit data stream of the noise shaper to an
analog output voltage. The filter coefficients are
implemented as current sources and are summed at virtual
ground of the output operational amplifier. In this way very
high signal-to-noise performance and low clock jitter
sensitivity is achieved. A post-filter is not needed due to
the inherent filter function of the DAC. On-board amplifiers
convert the FSDAC output current to an output voltage
signal capable of driving a line output.
The output voltage of the FSDAC is proportionally to the
power supply voltage.
2000 Jul 31
handbook, full pagewidth
Audio CODEC
Noise shaper
Filter stream DAC
decimation
interface
from
filter
digital
input
from
DE-EMPHASIS
VOLUME
VOLUME
MUTE
MUTE
AND
AND
s
. It shifts
Fig.5 Digital mixer (DAC).
+
10
8.10
The UDA1342TS supports the following data input/output
formats for the various modes (see Fig.6).
L3-bus and I
• I
• MSB-justified serial format with data word length of up to
• LSB-justified serial format with data word lengths of
• MSB-justified data output and
Static pin mode:
• I
• MSB-justified data output and
BASS BOOST
24 bits
16, 20 or 24 bits
LSB-justified 16, 20 and 24 bits data input.
LSB-justified 16, 20 and 24 bits data input.
TREBLE
2
2
AND
S-bus format with data word length of up to 24 bits
S-bus format with data word length of up to 24 bits
Digital interface
2
C-bus mode:
+
VOLUME
master
MUTE
AND
MGT019
UDA1342TS
Product specification
interface
interpolation
output
digital
to
filter
to