MAX5222EKA+T Maxim Integrated Products, MAX5222EKA+T Datasheet - Page 10

• Manufacturer Part Number: MAX5222EKA+T
• Description: IC DAC 8BIT DUAL BUFF SOT23-8
• Manufacturer: Maxim Integrated Products

Specifications of MAX5222EKA+T

• Settling Time: 10µs
• Number Of Bits: 8
• Data Interface: Serial
• Number Of Converters: 2
• Voltage Supply Source: Single Supply
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: SOT-23-8
• Resolution: 8 bit
• Interface Type: Serial (SPI)
• Supply Voltage (max): 5.5 V
• Supply Voltage (min): 2.7 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: - 40 C
• Voltage Reference: External
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Power Dissipation (max): -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: MAX5222EKA+T

The digital inputs are compatible with CMOS logic.
Supply current increases slightly when toggling the
logic inputs through the transition zone between
0.3
The MAX5222 serial interface is compatible with
MICROWIRE, SPI, and QSPI. For SPI, clear the CPOL
and CPHA bits (CPOL = 0 and CPHA = 0). CPOL = 0
sets the inactive clock state to zero, and CPHA = 0
changes data at the falling edge of SCLK. This setting
allows SPI to run at full clock speeds. If a serial port is
not available on your µP, 3 bits of a parallel port can be
used to emulate a serial port by bit manipulation.
Minimize digital feedthrough at the voltage outputs by
operating the serial clock only when necessary.
Dual, 8-Bit, Voltage-Output
Serial DAC in 8-Pin SOT23
Figure 3. Detailed Serial-Interface Timing Diagram
10
✕
______________________________________________________________________________________
V
DD
DIN
SCLK
CS
and 0.7
✕
V
DD
.
t
t
CSS
DS
Microprocessor Interfacing
t
DH
t
CH
Digital Inputs
t
CL
Table 4. Code Table
B7
1LSB
ANALOG OUTPUT
1
1
1
0
0
0
Note:
B6
1
0
0
1
0
0
DAC CONTENTS
=
B5
1
0
0
1
0
0
REF
B4
1
0
0
1
0
0
t
×
CSH
B3
1
0
0
1
0
0
2
−
B2
1
0
0
1
0
0
8
=
=
B1
1
0
0
1
0
0
REF
REF
B0
t
CSPWH
1
1
0
1
1
0
×
×



+
+
0V
+
+
+



256
REF
REF
REF
REF
REF
D
256
1



×
×
×
×
×



where D = decimal
value of digital input
ANALOG
OUTPUT















129
128
256
256
255
256
127
256
256
1




 = +










REF
2