MAX5250ACAP+ Maxim Integrated Products, MAX5250ACAP+ Datasheet - Page 11

• Manufacturer Part Number: MAX5250ACAP+
• Description: IC DAC 10BIT QUAD 5V LP 20-SSOP
• Manufacturer: Maxim Integrated Products

Specifications of MAX5250ACAP+

• Settling Time: 10µs
• Number Of Bits: 10
• Data Interface: Serial
• Number Of Converters: 4
• Voltage Supply Source: Single Supply
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 20-SSOP
• Number Of Dac Outputs: 4
• Resolution: 10 bit
• Interface Type: Serial (SPI)
• Supply Voltage (max): 5.5 V
• Supply Voltage (min): 4.5 V
• Maximum Operating Temperature: + 70 C
• Mounting Style: SMD/SMT
• Maximum Power Dissipation: 640 mW
• Minimum Operating Temperature: 0 C
• Supply Current: 850 uA
• Voltage Reference: External
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Power Dissipation (max): -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

Figure 5. Serial-Interface Timing Diagram
Figure 6. Detailed Serial-Interface Timing Diagram
The power-down lockout pin PDL disables software
shutdown when low. When in shutdown, transitioning
PDL from high to low wakes up the part with the output
set to the state prior to shutdown. PDL can also be
used to wake up the device asynchronously.
Any number of MAX5250s can be daisy chained by
connecting the DOUT pin of one device to the DIN pin
of the following device in the chain (Figure 7).
DOUT
SCLK
Low-Power, Quad, 10-Bit Voltage-Output DAC
DIN
CS
(MODE 0)
(MODE 1)
DOUT
SCLK
DOUT
DIN
CS
t
CSO
______________________________________________________________________________________
A1
A1
A1
t
CSS
Daisy Chaining Devices
1
t
MSB FROM
PREVIOUS WRITE
MSB FROM
PREVIOUS WRITE
DS
A0
t
A0
A0
DH
C1
Power-Down (PDL)
C1
C1
C0
C0
C0
D9
t
CL
D9
D9
D8
D8
D8
D7
t
CH
D7
D7
DATA PACKET (N-1)
DATA PACKET (N-1)
DATA PACKET (N)
D6
D6
D6
8
D5
D5
D5
9
Since the MAX5250’s DOUT pin has an internal active
pull-up, the DOUT sink/source capability determines
the time required to discharge/charge a capacitive
load. Refer to the serial-data-out V
cations in the Electrical Characteristics.
Figure 8 shows an alternate method of connecting sev-
eral MAX5250s. In this configuration, the data bus is
common to all devices; data is not shifted through a
daisy chain. More I/O lines are required in this configu-
ration because a dedicated chip-select input (CS) is
required for each IC.
D4
D4
D4
D3
with Serial Interface
D3
D3
t
DO1
D2
D2
D2
t
D1
CP
t
DO2
D1
D1
D0
D0
D0
S1
S1
S1
S0
S0
S0
t
CSH
16
A1
A1
DATA PACKET (N)
DATA PACKET (N)
COMMAND
EXECUTED
t
CS1
OH
t
CSW
and V
OL
specifi-
11