max5742 Maxim Integrated Products, Inc., max5742 Datasheet - Page 12

• Manufacturer Part Number: max5742
• Description: Max5742 12-bit, Low-power, Quad, Voltage-output Dac With Serial Interface
• Manufacturer: Maxim Integrated Products, Inc.

12-Bit, Low-Power, Quad, Voltage-Output
DAC with Serial Interface
Table 2. Serial-Interface Programming Commands
X = Don’t care
Figure 3. Typical Operating Circuit, Unipolar Output
12
C3
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
______________________________________________________________________________________
IN
MAX6050
CONTROL
C2
GND
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
OUT
C1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
C0
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
DAC_
DATA BITS
REF
D11–D0
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
GND
+2.7V TO +5.5V
DAC
A–D
A–D
A–D
C
D
C
D
C
D
A
B
A
B
A
B
V
MAX5742
DD
Input register transparent, data shifted directly to DAC register, OUTA updated
Input register transparent, data shifted directly to DAC register, OUTB updated
Input register transparent, data shifted directly to DAC register, OUTC updated
Input register transparent, data shifted directly to DAC register, OUTD updated
Data shifted to input register, OUTA unchanged
Data shifted to input register, OUTB unchanged
Data shifted to input register, OUTC unchanged
Data shifted to input register, OUTD unchanged
Shift data from input register to DAC register, OUTA updated
Shift data from input register to DAC register, OUTB updated
Shift data from input register to DAC register, OUTC updated
Shift data from input register to DAC register, OUTD updated
Input registers transparent, data shifted directly to DAC registers, OUTA–OUTD
updated
Data shifted to input registers, OUTA–OUTD unchanged
Shift data from input registers to DAC registers, OUTA–OUTD updated
OUT_
Figure 4. Bipolar Output Circuit
DAC_
REF
FUNCTION
R1
+2.7V TO +5.5V
MAX5742
V
DD
OUT_
R1 = R2
V+
V-
R2
V
OUT