AL1401A 查看數據表（PDF） - Allegro MicroSystems
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AL1401A Datasheet PDF : 8 Pages
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Table 1. Electrical Characteristics and Operating Conditions
Symbol Description
Min Typ Max Units
Electrical Characteristics and Operating Conditions
VDD
Supply Voltage
IDD
Supply Current
GND
Ground
Fs
Sample rate
Temp
Temperature
Outputs (OPDIGOUT)
4.5
5.0
5.5
V
-
1.5
-
mA
-
0.0
-
V
30
48
55
kHz
0
25
70
°C
VOH
Logical “1” output
voltage
0.9 VDD
-
-
VDD
VOL
Logical “0” output
voltage
-
-
0.1 VDD VDD
IOH
Logical “1” output
current
-
-
-8
mA
IOL
Logical “0” output
current
-
-
8
mA
Inputs (WDCLK, WDCLKNEG, FMT, IN, USER, RESET)
VIH
Logical “1” input
voltage
0.75 VDD
-
-
VDD
VIL
Logical “0” input
voltage
-
-
0.25 VDD VDD
IIH
Logical “1” input
current
-
-
1
uA
IIL
Logical “0” input
current
-
-
1
uA
CIN
Logic Input
Capacitance
-
5
-
pF
Table 2. Pin Descriptions
Pin #
Name
Pin Type
1
GND
Power
2
N/C
-
3
N/C
-
4
WDCLK
Input
5
RESET
Input
6
WDCLKNEG
Input
7
FMT0
Input
8
FMT1
Input
9
FMT2
Input
10
FMT3
Input
11
IN 1/2
Input
12
IN 3/4
Input
13
IN 5/6
Input
14
IN 7/8
Input
15
USER0
Input
16
USER1
Input
17
USER2
Input
18
USER3
Input
19
OPDIGOUT
Output
20
VDD
Power
Description
Ground pin
No connection
No connection
Word clock. Equal to sample frequency (Fs)
Active low reset
Sets phase of word clock
Format0, Sets data format
Format1. Sets data format
Format2. Sets data format
Format3. Sets data format
Channels 1 and 2 data input
Channels 3 and 4 data input
Channels 5 and 6 data input
Channels 7 and 8 data input
User 0 data bit input. Used to transmit timecode.
User 1 data bit input. Used to transmit MIDI data.
User 2 data bit input. Reserved, tie low.
User 3 data bit input. Reserved, tie low.
Output to optical driver
+5V power pin
Alesis Semiconductor
DS1401A-0702
12555 Jefferson Blvd., Suite285
Los Angeles, CA 90066
Phone (310) 301-0780 Fax (310) 306-1551 www.alesis-semi.com
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