Rainbow Electronics MAX5812 - Manual (Page 12)

MAX5812
the digital input serially into the DAC. Schmitt-trigger
buffered inputs allow slow transition interfaces such as
optocouplers to interface directly to the device. The
digital inputs are compatible with CMOS logic levels.
Power-Supply Bypassing and
Ground Management
Careful PC board layout is important for optimal system
performance. Keep analog and digital signals separate
to reduce noise injection and digital feedthrough. Use a
ground plane to ensure that the ground return from
GND to the power supply ground is short and low
impedance. Bypass V
DD with a 0.1µF capacitor to
ground as close to the device as possible.
Chip Information
TRANSISTOR COUNT: 7172
PROCESS: BiCMOS
12-Bit Low-Power, 2-Wire, Serial
Voltage-Output DAC
12 ______________________________________________________________________________________
12-BIT
DAC
INPUT
REGISTER
MUX AND DAC
REGISTER
RESISTOR
NETWORK
POWER-DOWN
CIRCUITRY
SERIAL
INTERFACE
V
DD
SDA ADD SCL GND
OUT
MAX5812
Functional Diagram
PART ADDRESS
MAX5812LEUT 0010 00X
MAX5812MEUT 0010 01X
MAX5812NEUT 0110 10X
MAX5812PEUT 1010 10X
Selector Guide