UDA1340M Просмотр технического описания (PDF) - Philips Electronics
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UDA1340M Datasheet PDF : 24 Pages
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Philips Semiconductors
Low-voltage low-power stereo audio
CODEC with DSP features
Preliminary specification
UDA1340
DC CHARACTERISTICS
VDDD = VDDA = VDDO = 3 V; Tamb = 25 °C; RL = 5 kΩ; note 1; all voltages referenced to ground (pins 1, 11, 22 and 27);
unless otherwise specified.
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX. UNIT
Supply
VDDA(ADC) ADC analog supply voltage
2.7
3.0
VDDA(DAC) DAC analog supply voltage
2.7
3.0
VDDO
operational amplifiers supply voltage
2.7
3.0
VDDD
digital supply voltage
2.7
3.0
IDDA(ADC)
ADC supply current
operation mode
−
4.5
ADC power-down −
200
IDDA(DAC)
DAC supply current
operation mode
−
3.5
DAC power-down −
15
IDDO
operational amplifier supply current operation mode
−
4
DAC power-down −
15
IDDD
digital supply current
operation mode
−
6
DAC power-down −
3
ADC power-down −
3
Digital input pins
VIH
HIGH level input voltage
VIL
LOW level input voltage
ILI
input leakage current
Ci
input capacitance
0.8VDDD −
−0.5
−
−
−
−
−
Digital output pins
VOH
HIGH level output voltage
VOL
LOW level output voltage
IOH = −2 mA
IOL = 2 mA
0.85VDDD −
−
−
Analog-to-digital converter
Vref
Ro(ref)
Ri
Ci
reference voltage
VrefA reference output resistance
input resistance
input capacitance
with respect to VSSA
pin 4
1 kHz
0.45VDDA
−
−
−
0.5VDDA
24
9.8
20
Digital-to-analog converter
Vref
Ro(ref)
Ro
Io(max)
RL
CL
reference voltage
VrefD reference output resistance
DAC output resistance
maximum output current
load resistance
load capacitance
with respect to VSSA
pin 28
(THD + N)/S < 0.1%
RL = 5 kΩ
note 2
0.45VDDA
−
−
−
0.5VDDA
28
0.13
0.22
3
−
−
−
3.6
V
3.6
V
3.6
V
3.6
V
−
mA
−
µA
−
mA
−
µA
−
mA
−
µA
−
mA
−
mA
−
mA
VDDD + 0.5 V
+0.2VDDD V
10
µA
10
pF
−
V
0.4
V
0.55VDDA V
−
kΩ
−
kΩ
−
pF
0.55VDDA V
−
kΩ
3.0
Ω
−
mA
−
kΩ
200
pF
Notes
1. All power supply pins (VDD and VSS) must be connected to the same external power supply unit.
2. When higher capacitive loads must be driven then a 100 Ω resistor must be connected in series with the DAC output
in order to prevent oscillations in the output operational amplifier.
1997 Jul 09
15
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