MAX5250BEAP+ Maxim Integrated Products, MAX5250BEAP+ Datasheet - Page 15

• Manufacturer Part Number: MAX5250BEAP+
• Description: IC DAC 10BIT QUAD 5V LP 20-SSOP
• Manufacturer: Maxim Integrated Products

Specifications of MAX5250BEAP+

• Settling Time: 10µs
• Number Of Bits: 10
• Data Interface: Serial
• Number Of Converters: 4
• Voltage Supply Source: Single Supply
• Operating Temperature: -40°C ~ 85°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: + 85 C
• Mounting Style: SMD/SMT
• Maximum Power Dissipation: 640 mW
• Minimum Operating Temperature: - 40 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

On power-up, all input and DAC registers are cleared
(set to zero code) and DOUT is in Mode 0 (serial data
is shifted out of DOUT on the clock’s falling edge).
For rated MAX5250 performance, limit REFAB/REFCD
to less than 1.4V below V
capacitor in parallel with a 0.1µF capacitor to AGND.
Use short lead lengths and place the bypass capaci-
tors as close to the supply pins as possible.
Digital or AC transient signals between AGND and
DGND can create noise at the analog outputs. Tie
AGND and DGND together at the DAC, then tie this
point to the highest-quality ground available.
Good printed circuit board ground layout minimizes
crosstalk between DAC outputs, reference inputs, and
digital inputs. Reduce crosstalk by keeping analog
lines away from digital lines. Wire-wrapped boards are
not recommended.
Figure 13. Digitally Programmable Current Source
Low-Power, Quad, 10-Bit Voltage-Output DAC
Grounding and Layout Considerations
REF_
DAC_
Power-Supply Considerations
______________________________________________________________________________________
MAX5250
DD
. Bypass V
OUT_
FB_
DD
2N3904
V
L
R
with a 4.7µF
I
OUT
__________________Pin Configuration
with Serial Interface
TOP VIEW
REFAB
AGND
OUTA
OUTB
SCLK
FBA
FBB
DIN
CS
CL
10
1
2
3
4
5
6
7
8
9
DIP/SSOP
MAX5250
20
19
18
17
16
14
13
12
15
11
V
FBD
OUTD
OUTC
FBC
REFCD
PDL
UPO
DOUT
DGND
DD
15