AK7740ET Datasheet, PDF (9/48 Pages) Asahi Kasei Microsystems – 24bit 2ch ADC + 24bit 4ch DAC with Audio DSP

[ASAHI KASEI]
[AK7740ET]
(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
24
µA
Note:
1. Pins with pull-down resistors and the XTI pin are not included
2. Pull-down pins are JX, SDIN and SDINA. The pull-down resistor value is 156kΩ
3. For input/output levels in this datasheet: 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 4 DAC channels with a 1kHz sine wave full-scale input to each of ADC analog input pin)
Power supply
Parameter
Power supply current
1) During operation
a) AVDD
Min
Typ
Max
Unit
34
mA
b) DVDD
c) Total (a+b)
2) INIT_RESET ="L"
Note 1)
Note 2)
31
mA
65
90
mA
5
mA
Power consumption
1)During operation
a) AVDD
b) DVDD
c) Total (a+b)
2) INIT_RESET ="L"
Note 1)
Note 2)
112
mW
102
mW
214
324
mW
17
mW
Note:
1) Varies slightly depending on sampling frequency and the content of the DSP program.
2) This is a reference value when using a crystal oscillator. Most of the supply current during the initial reset state
is in the oscillator section; the value varies slightly depending on the type of crystal oscillator and external
circuit.
<Pre-E-01>
-9-
2006/10