MAX5155BEEE Maxim Integrated, MAX5155BEEE Datasheet - Page 10

• Manufacturer Part Number: MAX5155BEEE
• Description: Digital to Analog Converters - DAC
• Manufacturer: Maxim Integrated

Specifications of MAX5155BEEE

• Number Of Converters: 2
• Number Of Dac Outputs: 2
• Resolution: 12 bit
• Interface Type: QSPI, SPI, Serial (3-Wire, Microwire)
• Settling Time: 15 us
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Package / Case: QSOP-16
• Minimum Operating Temperature: - 40 C
• Output Type: Voltage
• Supply Voltage - Max: 3.6 V
• Supply Voltage - Min: 2.7 V
• Voltage Reference: External

Table 1. Serial-Interface Programming Commands
Low-Power, Dual, 12-Bit Voltage-Output DACs
with Serial Interface
x = Don’t care
Note: D11, D10, D9, and D8 become control bits when A0, C1, and C0 = 0. S0 is a sub bit, always zero.
Figure 2. Connections for Microwire
10
A0
0
1
0
1
0
1
1
0
0
0
0
0
0
0
0
0
______________________________________________________________________________________
MAX5154
MAX5155
C1
0
0
1
1
1
0
1
0
0
0
0
0
0
0
0
0
C0
1
1
0
0
1
0
1
0
0
0
0
0
0
0
0
0
16-BIT SERIAL WORD
SCLK
DIN
CS
D11.......................D0
(MSB)
0 0 1 x xxxxxxxx
1 0 1 x xxxxxxxx
1 1 0 x xxxxxxxx
1 1 1 x xxxxxxxx
0 1 0 x xxxxxxxx
0 1 1 x xxxxxxxx
1 0 0 1 xxxxxxxx
1 0 0 0 xxxxxxxx
0 0 0 x xxxxxxxx
12-bit DAC data
12-bit DAC data
12-bit DAC data
12-bit DAC data
12-bit DAC data
xxxxxxxxxxxx
xxxxxxxxxxxx
SK
SO
I/O
(LSB)
MICROWIRE
PORT
S0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Load input register A; DAC registers are unchanged.
Load input register B; DAC registers are unchanged.
Load input register A; all DAC registers are updated.
Load input register B; all DAC registers are updated.
Load all DAC registers from the shift register
(start up both DACs with new data.).
Update both DAC registers from their respective input registers
(start up both DACs with data previously stored in the input registers).
Shut down both DACs (provided PDL = 1).
Update DAC register A from input register A
(start up DAC A with data previously stored in input register A).
Update DAC register B from input register B
(start up DAC B with data previously stored in input register B).
Shut down DAC A (provided PDL = 1).
Shut down DAC B (provided PDL = 1).
UPO goes low (default).
UPO goes high.
Mode 1, DOUT clocked out on SCLK’s rising edge.
Mode 0, DOUT clocked out on SCLK’s falling edge (default).
No operation (NOP).
saved, allowing the MAX5154/MAX5155 to recall the
output state prior to entering shutdown when returning
to normal mode. Exit shutdown by recalling the previ-
ous condition or by updating the DAC with new infor-
mation. When returning to normal operation (exiting
shutdown), wait 20µs for output stabilization.
The MAX5154/MAX5155 3-wire serial interface is com-
patible with both Microwire (Figure 2) and SPI/QSPI
(Figure 3) serial-interface standards. The 16-bit serial
input word consists of an address bit, two control bits,
12 bits of data (MSB to LSB), and one sub bit as shown
in Figure 4. The address and control bits determine the
MAX5154/ MAX5155’s response, as outlined in Table 1.
FUNCTION
Serial Interface