MAX5134EVKIT+ Maxim Integrated Products, MAX5134EVKIT+ Datasheet - Page 14

• Manufacturer Part Number: MAX5134EVKIT+
• Description: KIT EVAL FOR MAX5134
• Manufacturer: Maxim Integrated Products

Specifications of MAX5134EVKIT+

• Number Of Dac's: 4
• Number Of Bits: 16
• Outputs And Type: 1, Single Ended
• Data Interface: Serial
• Settling Time: 5µs
• Dac Type: Voltage
• Voltage Supply Source: Analog and Digital
• Operating Temperature: -40°C ~ 105°C
• Utilized Ic / Part: MAX5134, MAX5135, MAX5136, MAX5137
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Pin-/Software-Compatible,
16-/12-Bit, Voltage-Output DACs
Figure 7. Output Timing
On power-up, the input registers are set to zero, DAC
outputs power up to zero or midscale, depending on
the configuration of M/Z. Connect M/Z to GND to power
the outputs to GND. Connect M/Z to AVDD to power the
outputs to midscale.
To guarantee DAC linearity, wait until the supplies have
settled. Set the LIN bit in the DAC linearity register; wait
10ms, and clear the LIN bit.
The MAX5134–MAX5137 unipolar output voltage range
is 0 to V
2kΩ in parallel with 200pF.
Use the MAX5134–MAX5137 in bipolar applications with
additional external components (see the Typical
Operating Circuit ).
For best performance, use a separate supply for the
MAX5134–MAX5137. Bypass both DVDD and AVDD
with high-quality ceramic capacitors to a low-imped-
ance ground as close as possible to the device.
Minimize lead lengths to reduce lead inductance.
Connect both MAX5134–MAX5137 GND inputs to the
analog ground plane.
Table 2. MAX5134/MAX5136 Input Code
vs. Output Voltage
14
DAC LATCH CONTENTS
MSB
1111 1111 1111 1111
1000 0000 0000 0000
0000 0000 0000 0001
0000 0000 0000 0000
______________________________________________________________________________________
REFI
. The output buffers each drive a load of
Applications Information
LDAC
OUT_
LSB
Bypassing Considerations
V
V
V
0
REF
REF
REF
Power-On Reset (POR)
ANALOG OUTPUT, V
x (65,535/65,536)
x (32,768/65,536) = 1/2 V
x (1/65,536)
Power Supplies and
Unipolar Output
Bipolar Output
t
LDACPWL
OUT_
REF
t
S
Digital and AC transient signals on GND inputs can cre-
ate noise at the outputs. Connect both GND inputs to
form the star ground for the DAC system. Refer remote
DAC loads to this system ground for the best possible
performance. 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 MAX5134–MAX5137 GND. Carefully lay out the
traces between channels to reduce AC crosscoupling
and crosstalk. Do not use wire-wrapped boards and
sockets. Use shielding to improve noise immunity. Do
not run analog and digital signals parallel to one anoth-
er (especially clock signals) and avoid routing digital
lines underneath the MAX5134–MAX5137 package.
INL is the deviation of the measured transfer function
from a best fit straight line drawn between two codes.
For the MAX5134/MAX5136, this best fit line is a line
drawn between codes 3072 and 64,512 of the transfer
function, once offset and gain errors have been nullified.
For the MAX5135/MAX5137, this best fit line is a line
drawn between codes 192 and 4032 of the transfer func-
tion, once offset and gain errors have been nullified.
DNL is the difference between an actual step height
and the ideal value of 1 LSB. If the magnitude of the
DNL is greater than -1 LSB, the DAC guarantees no
missing codes and is monotonic.
Table 3. MAX5135/MAX5137 Input Code
vs. Output Voltage
MSB
1111
1000
0000
0000
DAC LATCH CONTENTS
1111
0000
0000
0000
1111
0000
0001
0000
Differential Nonlinearity (DNL)
XXXX
XXXX
XXXX
XXXX
LSB
±2 LSB
Integral Nonlinearity (INL)
Layout Considerations
V
V
V
0
REF
REF
REF
ANALOG OUTPUT, V
x (4095/4096)
x (2048/4096)
x (1/4096)
Definitions
OUT_