AK7744VT Datasheet, PDF (10/50 Pages) Asahi Kasei Microsystems – 24bit 3ch ADC + 24bit 4ch DAC with Audio DSP

[ASAHI KASEI]
[AK7744]
(2) DC characteristics
(VDD=AVDD=DVDD=3.0~3.6V,Ta=25°C)
Parameter
Symbol
min
typ
max
Unit
High level input voltage
VIH 80%VDD
V
Low level input voltage
VIL
20%VDD
V
High level output voltage Iout=-100µA
VOH VDD-0.5
V
Low level output voltage Iout=100µA
VOL
0.5
V
Input leak current
Note 1)
Iin
±10
µA
Input leak current (pull-down) Note 2)
Iid
22
µA
Input leak current (XTI pin)
Iix
26
µA
Note:
1. The pull-down and XTI pins are not included.
2. The pull-down pins are JX, SDIN, SDINA1 and SDINA2. The pull-down resistor value is 150kΩ.
3. Regarding the input/output levels in the text, the low level will be represented as "L" or 0, and the high level as
"H" or 1. In principle, "0" and "1" will be used to represent the bus (serial/parallel) such as registers.
(3) Current consumption
(AVDD=DVDD=3.0V~3.6V, Ta=25°C; master clock (XTI)=24.576MHz=512fs[fs=48kHz];
When operating the DAC four channels with 1kHz sinusoidal waves and –1dBFS-scale input to each of ADC 2ch
analog input pins)
Power supply
Parameter
Power supply current
a) AVDD
min
typ
max
Unit
60
mA
b) DVDD
c) Total(a+b)
2) INIT_RESET ="L"
Note 1)
Note 2)
40
mA
100
135
mA
6.0
mA
Power consumption
1) During operation
a) AVDD
b) DVDD
c) Total(a+b)
Note 1)
198
mW
132
mW
330
486
mW
2) INIT_RESET ="L"
Note 2)
19.8
mW
Note:
1) Varies slightly according to the frequency used and contents of the DSP program.
2) This is a reference value when using a crystal oscillator. Since most of the power current during a reset is pulled
from the oscillator section, the value changes slightly depending on the crystal oscillators type and external
circuits used. Therefore this is “reference value”.
<MS0167-E-00>
- 10 -
2002/10