UDA1345TS 查看數據表（PDF） - NXP Semiconductors.
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UDA1345TS Datasheet PDF : 29 Pages
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NXP Semiconductors
Economy audio CODEC
Product specification
UDA1345TS
11 AC CHARACTERISTICS (ANALOG)
VDDD = VDDA = VDDO = 3.0 V; fi = 1 kHz; fs = 44.1 kHz; Tamb = 25 °C; RL = 5 kΩ; all voltages referenced to ground
(pins 1, 11, 22 and 27); unless otherwise specified.
SYMBOL
PARAMETER
CONDITIONS
MIN. TYP. MAX. UNIT
Analog-to-digital converter
Do
digital output level at 1 V (RMS) notes 1 and 2
input voltage
−2.5 −1.5 −0.5 dBFS
ΔVi
unbalance between channels
−
(THD + N)/S total harmonic distortion-plus-noise at 0 dB, 1 V (RMS)
to signal ratio
fs = 44.1 kHz
−
fs = 96 kHz
−
at −60 dB, 1 mV (RMS);
A-weighted
0.1
−
dB
−85
−80
dB
−80
−75
dB
S/N
signal-to-noise ratio
αcs
PSRR
channel separation
power supply rejection ratio
fs = 44.1 kHz
−
−36
−30
dB
fs = 96 kHz
−
−34
−30
dB
Vi = 0 V; A-weighted
fs = 44.1 kHz
90
96
−
dB
fs = 96 kHz
90
94
−
dB
−
100
−
dB
fripple = 1 kHz;
Vripple(p-p) = 1%
−
30
−
dB
Digital-to-analog converter
Vo(rms)
ΔVo
(THD + N)/S
output voltage (RMS value)
unbalance between channels
total harmonic distortion plus
noise-to-signal ratio
note 3
850
900
950
mV
−
0.1
−
dB
at 0 dB
fs = 44.1 kHz
−
fs = 96 kHz
−
at −60 dB; A-weighted
−85
−80
dB
−80
−71
dB
S/N
signal-to-noise ratio
fs = 44.1 kHz
−
fs = 96 kHz
−
code = 0; A-weighted
−37
−30
dB
−35
−30
dB
αcs
PSRR
channel separation
power supply rejection ratio
fs = 44.1 kHz
fs = 96 kHz
fripple = 1 kHz;
Vripple(p-p) = 1%
90
100
−
dB
90
98
−
dB
−
100
−
dB
−
60
−
dB
Notes
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 voltage.
3. The output voltage of the DAC scales proportionally with the power supply voltage.
2002 May 28
20
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