MAX5259EEE-T Maxim Integrated, MAX5259EEE-T Datasheet - Page 17

• Manufacturer Part Number: MAX5259EEE-T
• Description: Digital to Analog Converters - DAC 8-Bit 8Ch Precision DAC
• Manufacturer: Maxim Integrated

Specifications of MAX5259EEE-T

• Number Of Converters: 8
• Number Of Dac Outputs: 8
• Resolution: 8 bit
• Interface Type: QSPI, SPI, Serial (3-Wire, 4-Wire, Microwire)
• Settling Time: 7 us
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Package / Case: QSOP-16
• Minimum Operating Temperature: - 40 C
• Output Type: Voltage
• Supply Voltage - Max: 3.6 V
• Supply Voltage - Min: 2.7 V
• Voltage Reference: External

Figure 8. DAC Simplified Circuit Diagram
Figure 10. Suggested PC Board Layout for Minimizing
Crosstalk (Bottom View)
The voltage applied to REF should not exceed V
any time. If proper power sequencing is not possible,
connect an external Schottky diode between REF and
V
DD
D7
D6
D5
D4
OUTB
OUTA
LDAC
GND
to ensure compliance with the absolute maximum
V
REF
DD
DAC A
REF
______________________________________________________________________________________
R0
SYSTEM GND
D3
+3V/+5V, Low-Power, 8-Bit Octal DAC
R1
D2
LSB DECODER
Power Sequencing
D1
D0
with Rail-to-Rail Output Buffers
R255
R15
R16
OUTC
OUTD
DOUT
DIN
DD
at
ratings. Do not apply signals to the digital inputs before
the device is fully powered-up.
Bypass V
V
minimizes crosstalk among DAC outputs and digital
inputs. Figure 10 shows suggested circuit board layout
to minimize crosstalk.
In unipolar operation, the output voltages and the refer-
ence input are the same polarity. Figure 11 shows the
MAX5258/MAX5259 unipolar configuration, and Table 2
shows the unipolar code.
Figure 9. Effect of Negative Offset (Single Supply)
DD
and GND as possible. Careful PC board layout
NEGATIVE
OFFSET
DD
VOLTAGE
OUTPUT
with a 0.1µF capacitor, located as close to
O
Unipolar-Output, Two-Quadrant
Power-Supply Bypassing and
DAC CODE
Ground Management
Multiplication
17