2000 Jul 31 31
NXP Semiconductors Product specification
Audio CODEC UDA1342TS
Notes
1. All supply connections must be made to the same power supply unit.
2. V
DDA
=V
DDA(DAC)
=V
DDA(ADC)
.
3. When higher capacitive loads must be driven, a 100 Ω resistor must be connected in series with the DAC output in
order to prevent oscillations in the output operational amplifier.
I
DDA(ADC)
ADC analog supply current 1 ADC + 1 PGA enabled − 10 − mA
2 ADCs + 2 PGAs enabled − 20 − mA
all ADCs + all PGAs
power-down
− 200 −μA
I
DDA(DAC)
DAC analog supply current operating − 6.0 − mA
DAC power-down − 250 −μA
I
DDD
digital supply current operating − 9.0 − mA
ADC power-down − 4.5 − mA
DAC power-down − 5.5 − mA
Digital input pins (5 V tolerant TTL compatible)
V
IH
HIGH-level input voltage 2.0 − 5.5 V
V
IL
LOW-level input voltage −0.5 − +0.8 V
⎪I
LI
⎪ input leakage current −−1 μA
C
i
input capacitance −−10 pF
Digital output pins
V
OH
HIGH-level output voltage I
OH
= −2mA 0.85V
DDD
−−V
V
OL
LOW-level output voltage I
OL
=2mA −−0.4 V
Reference voltage
V
ref
reference voltage with respect to V
SSA(ADC)
;
note 2
0.45V
DDA
0.5V
DDA
0.55V
DDA
V
R
o(Vref)
output resistance on pin V
ref
− 5 − kΩ
Analog-to-digital converter
V
ADCP
positive reference voltage of
the ADC
− V
DDA(ADC)
− V
V
ADCN
negative reference voltage
of the ADC
− 0.0 − V
R
i
input resistance − 10 − kΩ
C
i
input capacitance − 24 − pF
Digital-to-analog converter
I
o(max)
maximum output current (THD + N)/S < 0.1% − 1.6 − mA
R
L
load resistance 3 −−kΩ
C
L
load capacitance note 3 −−50 pF
SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT
