MAX5581BEUP+T Maxim Integrated Products, MAX5581BEUP+T Datasheet - Page 24

• Manufacturer Part Number: MAX5581BEUP+T
• Description: IC DAC 12BIT QUAD BUFF 20-TSSOP
• Manufacturer: Maxim Integrated Products

Specifications of MAX5581BEUP+T

• Settling Time: 3µs
• Number Of Bits: 12
• Data Interface: MICROWIRE™, QSPI™, Serial, SPI™
• Number Of Converters: 4
• Voltage Supply Source: Analog and Digital
• Power Dissipation (max): 1.74W
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 20-TSSOP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

DAC Programming Examples:
To load input register A from the shift register, leaving
DAC register A unchanged (DAC output unchanged),
use the command in Table 3.
The MAX5580–MAX5585 can load all the input registers
(A–D) simultaneously from the shift register, leaving the
DAC registers unchanged (DAC output unchanged), by
using the command in Table 4.
To load all the input registers (A–D) and all the DAC regis-
ters (A–D) simultaneously, use the command in Table 5.
For the 10-bit and 8-bit versions, set sub-bits = 0 for
best performance.
Buffered, Fast-Settling, Quad,
12-/10-/8-Bit, Voltage-Output DACs
Table 3. Load Input Register A from Shift Register
Table 4. Load Input Registers (A–D) from Shift Register
Table 5. Load Input Registers (A–D) and DAC Registers (A–D) from Shift Register
Table 6. Select Bits (M_)
X = Don’t care.
Table 7. Select Bits Programming Example
X = Don’t care.
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DATA
DATA
DATA
DATA
DATA
DIN
DIN
DIN
DIN
DIN
______________________________________________________________________________________
0
1
1
1
1
CONTROL BITS
CONTROL BITS
CONTROL BITS
0
1
1
1
1
0
0
1
1
0
CONTROL BITS
CONTROL BITS
0
0
0
0
1
D11
D11
D11
0
0
D10
D10
D10
0
0
D9
D9
D9
X
X
D8
D8
D8
X
X
The select bits allow synchronous updating of any com-
bination of channels. The select bits command the
loading of the DAC register from the input register of
each channel. Set the select bit M_ = 1 to load the DAC
register “_” with data from the input register “_”, where
“_” is replaced with A, B, C, or D, depending on the
selected channel. Setting the select bit M_ = 0 results
in no action for that channel (Table 6).
Select Bits Programming Example:
To load DAC register B from input register B while
keeping other channels (A, C, D) unchanged, set MB =
1 and M_ = 0 (Table 7).
D7
D7
D7
X
X
DATA BITS
DATA BITS
DATA BITS
D6
D6
D6
X
X
D5
D5
D5
X
X
Programming Commands
DATA BITS
DATA BITS
D4
D4
D4
X
X
D3/0
D3/0
D3/0
MD
0
Advanced-Feature
D2/0
D2/0
D2/0
MC
0
Select Bits (M_)
D1/0
D1/0
D1/0
MB
1
D0/0
D0/0
D0/0
MA
0