Philips Semiconductors
Preliminary specification
Economy audio CODEC with features
FEATURES
General
•
Low power consumption
•
2.4 V to 3.6 V power supply range, with 3 V typical
•
5 V tolerant TTL compatible digital inputs
•
256, 384 and 512f
s
system clock
•
Supports sampling frequencies from 8 to 110 kHz
•
Non-inverting ADC plus integrated high-pass filter to
cancel DC offset
•
The ADC supports 2 V (RMS) input signals
•
Stereo PGA with 0 to 24 dB gain in 3 dB steps
•
Overload detector for easy record level control
•
Separate power control for ADC + PGA and DAC
•
Integrated digital interpolation filter plus non-inverting
DAC
•
Functions controllable by L3 microcontroller interface
•
Small package size (TSSOP28)
•
ADC and DAC output polarity can be set.
Multiple format input interface
•
I
2
S-bus, MSB-justified up to 24 bits and LSB-justified
16, 18, 20 and 24 bits format compatible
•
Four combined data formats with MSB data output and
LSB 16, 18, 20 and 24 bits data input
•
1f
s
input and output format data rate.
DAC digital sound processing
•
Digital dB-linear volume control (low microcontroller
load) via L3 microcontroller in 0.25 dB steps
•
Digital de-emphasis for 32, 44.1, 48 and 96 kHz
•
Cosine roll-soft mute.
Advanced audio configuration
•
Stereo single-ended input configuration
•
Stereo line output (under microcontroller volume
control), no post filter required
ORDERING INFORMATION
TYPE
NUMBER
UDA1343TT
PACKAGE
NAME
TSSOP28
DESCRIPTION
GENERAL DESCRIPTION
UDA1343TT
•
High linearity, dynamic range and low distortion
•
Digital silence detector
•
Digital mixer for mixing ADC signal and playback signal
•
ADC volume control in 0.25 dB steps and cosine roll-off
mute.
APPLICATIONS
•
Portable equipment which includes audio functions
•
Digital video camera.
The UDA1343TT is a single-chip stereo Analog-to-Digital
Converter (ADC) and Digital-to-Analog Converter (DAC)
with basic signal processing features employing bitstream
conversion techniques. The low power consumption, the
small package size and low voltage requirements make
the device eminently suitable for use in low-voltage
low-power portable digital audio equipment which
incorporates recording and playback functions.
The UDA1343TT is equipped with a digital mixer for mixing
the ADC signal directly to the playback signal (for example
for Karaoke applications). In the mixing mode the ADC
output signal can be output before or after the mixer.
The mixer can also be used as a selector to select
between the ADC or the digital data being played back at
the DAC.
VERSION
SOT361-1
plastic shrink small outline package; 28 leads; body width 4.4 mm
2000 Jan 12
2
Philips Semiconductors
Preliminary specification
Economy audio CODEC with features
QUICK REFERENCE DATA
SYMBOL
Supplies
V
DDA(ADC)
V
DDA(DAC)
V
DDD
I
DDA(ADC)
I
DDA(DAC)
I
DDO(DAC)
I
DDD
ADC analog supply voltage
DAC analog supply voltage
digital supply voltage
ADC analog supply current
DAC analog supply current
DAC operational amplifier supply
current
digital supply current
2.4
2.4
2.4
−
−
−
−
−
−
−
−
−40
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
PARAMETER
CONDITIONS
MIN.
UDA1343TT
TYP.
3.0
3.0
3.0
10
100
4
50
2.5
200
5
300
−
1.0
−85
−81
−37
−35
97
95
100
900
−85
−80
−37
−35
100
100
98
MAX.
3.6
3.6
3.6
−
−
−
−
−
−
−
−
+85
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
−
UNIT
V
V
V
mA
µA
mA
µA
mA
µA
mA
µA
°C
V
dB
dB
dB
dB
dB
dB
dB
mV
dB
dB
dB
dB
dB
dB
dB
operating mode
ADC power-down
operating mode
DAC power-down
operating mode
DAC power-down
operating mode
ADC plus DAC
power-down
T
amb
V
i(rms)
(THD + N)/S
ambient temperature
input voltage (RMS value)
notes 1, 2 and 3
total harmonic distortion-plus-noise to at 0 dB
signal ratio
f
s
= 44.1 kHz
f
s
= 96 kHz
at
−60
dB; A-weighted
f
s
= 44.1 kHz
f
s
= 96 kHz
signal-to-noise ratio
V
i
= 0 V; A-weighted
f
s
= 44.1 kHz
f
s
= 96 kHz
channel separation
output voltage (RMS value)
total harmonic distortion-plus-noise to at 0 dB
signal ratio
f
s
= 44.1 kHz
f
s
= 96 kHz
at
−60
dB; A-weighted
f
s
= 44.1 kHz
f
s
= 96 kHz
channel separation
signal-to-noise ratio
code = 0; A-weighted
f
s
= 44.1 kHz
f
s
= 96 kHz
Analog-to-digital converter
S/N
α
cs
V
o(rms)
(THD + N)/S
Digital-to-analog converter
α
cs
S/N
2000 Jan 12
3
Philips Semiconductors
Preliminary specification
Economy audio CODEC with features
UDA1343TT
SYMBOL
Power performance
P
ADDA
P
DA
P
AD
P
PD
Notes
PARAMETER
power consumption in record and
playback mode
power consumption in playback mode
power consumption in record mode
power consumption in power-down
mode
CONDITIONS
MIN.
−
−
−
−
TYP.
64
36
46
2.0
MAX.
−
−
−
−
UNIT
mW
mW
mW
mW
1. The input voltage can be up to 2 V (RMS) when the current through the ADC input pin is limited to approximately
1 mA by using a series resistor.
2. The input voltage to the ADC scales proportionally with the power supply.
3. The performance figures and input voltage of the ADC are given with the PGA gain set to 0 dB.
2000 Jan 12
4
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