max5236eubt Maxim Integrated Products, Inc., max5236eubt Datasheet - Page 17

• Manufacturer Part Number: max5236eubt
• Description: Single-supply 3v/5v, Voltage-output, Dual, Precision 10-bit Dacs
• Manufacturer: Maxim Integrated Products, Inc.

Figure 11. Digital Control of Gain and Offset
Figure 12. Multiple MAX5236/MAX5237 Sharing a Common DIN Line
through a daisy-chain. The SCLK and DIN lines are
shared by all devices, but each IC needs its own dedi-
cated CS line.
On power-up, the input and DAC registers clear (set to
zero code). Bypass the power supply with a 4.7µF
capacitor in parallel with a 0.1µF capacitor to GND.
Minimize lead lengths to reduce lead inductance.
Digital and AC transient signals on GND can create
noise at the output. Connect GND to the highest quality
Grounding and Layout Considerations
V
V
REF
IN
Single-Supply 3V/5V, Voltage-Output, Dual,
SCLK
REFA
REFB
DIN
CS
SCLK
CS1
CS2
CS3
DIN
Power-Supply Considerations
______________________________________________________________________________________
REGISTER
SHIFT
MAX5236
MAX5237
INPUT
INPUT
REG A
REG B
V
CS
SCLK
DIN
DD
MAX5236
MAX5237
REG A
REG B
DAC
DAC
DAC A
DAC B
GND
SCLK
DIN
121kΩ
121kΩ
CS
MAX5236
MAX5237
ground available. Use proper grounding techniques,
such as a multilayer board with a low-inductance
ground plane or star connect all ground return paths
back to the MAX5236/MAX5237 GND. Carefully lay out
the traces between channels to reduce AC cross-cou-
pling and crosstalk. Wire-wrapped boards and sockets
are not recommended. If noise becomes an issue,
shielding may be required.
TRANSISTOR COUNT: 4184
PROCESS: BiCMOS
77.25kΩ
77.25kΩ
Precision 10-Bit DACs
OUTA
OUTB
VOUT = (GAIN) (OFFSET)
R1
R3
= V
NA IS THE NUMERIC VALUE OF THE INPUT CODE FOR DAC A.
NB IS THE NUMERIC VALUE OF THE INPUT CODE FOR DAC B.
IN
R2
1024
2NA
SCLK
DIN
CS
R1 + R2
R2
R4
MAX5236
MAX5237
1 + R4
R3
V
OUT
Chip Information
–
V
REF
1024
2NB
TO OTHER
SERIAL DEVICES
R4
R3
17