ICmic
IC MICROSYSTEMS
ICM7377B/7357B/7337B
Quad 12/10/8-Bit Voltage Output DACs
with Serial Interface and Adjustable Output Gain
CONTENTS OF INPUT SHIFT REGISTER
ICM7377B (12-Bit DAC)
MSB
C3
C2
C1
C0
D11
D10
D9
D8
D7
D6
D5
D4
D3
D2
D1
LSB
D0
CONTROL WORD
DATA WORD
Figure 3.
Contents of ICM7377B Input Shift Register
ICM7357B (10-Bit DAC)
MSB
C3
C2
C1
C0
D9
D8
D7
D6
D5
D4
D3
D2
D1
D0
X
X
LSB
X
X
CONTROL WORD
DATA WORD
Figure 4.
Contents of ICM7357B Input Shift Register
ICM7337B (8-Bit DAC)
MSB
C3
C2
C1
C0
D7
D6
D5
D4
D3
D2
D1
D0
X
X
X
X
X
X
LSB
X
X
CONTROL WORD
DATA WORD
Figure 5.
Contents of ICM7337B Input Shift Register
C3
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
C2
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
C1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
C0
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
DATA (D0 - D11)
Data
Data
Data
Data
Data
Data
Data
Data
Data
Data
Data
Data
Data
Data
Data
X
FUNCTION
Load Input Latch DAC A
Update DAC A
Load Input Latch and Update DAC A
Load Input Latch DAC B
Update DAC B
Load Input Latch and Update DAC B
Load Input Latch DAC C
Update DAC C
Load Input Latch and Update DAC C
Load Input Latch DAC D
Update DAC D
Load Input Latch and Update DAC D
Load Input Latch All DACs
Update All DACs
Load Input Latch and Update All DACs
No Operation
Table 1.
Serial Interface Input Word
Rev. A8
ICmic reserves the right to change the specifications without prior notice.
7
ICMIC [ IC MICROSYSTEMS ]
