Rainbow Electronics MAX5735 - Manual (Page 24)

MAX5732–MAX5735
32-Channel, 16-Bit, Voltage-Output
DACs with Serial Interface
24 ______________________________________________________________________________________
Applications Information
MEMS Micromirror Control
The MAX5732/MAX5733 are the highest resolution 32-
channel DACs available in the smallest footprint, mak-
ing the devices ideal for optical MEMS mirror control
(Figure 10). A high-resolution DAC forms the core ana-
log block for controlling the X and Y position of the mir-
ror. As the density of the optical cross-connects
increases, the number of DAC channels also increases.
By offering the highest resolution and the greatest den-
sity, the MAX5732/MAX5733 improve performance and
reduce the board footprint.
Automatic Test Equipment (ATE)
Applications
The MAX5734 includes many features suited for ATE
applications. The device is the most compact level-set-
ting solution available for high-density pin electronics
boards. The MAX5734 provides a -2.5V to +7.5V output
voltage range (required by most ATE applications).
The offset DAC simultaneously adjusts the voltage
range of all 32 DACs, allowing optimization to the appli-
cation. The remote-sense feature allows the pin elec-
tronic voltages to be referenced to the ground potential
at the DUT site.
The B grade linearity error of ±2.44mV (max) is more than
sufficient for most ATE applications. The A grade device
cuts this error to ±1.22mV (max) for higher accuracy.
The pipelined register architecture allows all 32 DACs
to be updated simultaneously. This is valuable during
test setups, as all values in the tester can be set and
then updated in unison with a single command. This
feature can be accessed through the serial port or the
LDAC input.
The low output noise of the MAX5734 allows direct con-
nection to the pin electronics, eliminating the cost and
PC board area of external filtering.
Modern pin electronics integrated circuits (PEICs) are
typically fabricated on high-speed processes with low
ADC
MAX5732
MAX5733
DAC0
HVDRV0
HVDRV31
DAC31
14 TO 16 BITS
VOLTAGE
REFERENCE
VOLTAGE
REFERENCE
DSP
CONTROL
ALGORITHM
POSITION OR
OPTICAL
FEEDBACK
PGA OR
FIXED GAIN AMPS
MEMS MIRRORS WITH
X AND Y CONTROL
THIN-FILM FILTER OR
PLANAR LIGHT WAVE
SEPARATORS
WITH OPTICAL
LENSES
MEMS
MIRRORS WITH
X AND Y
CONTROL
DWDM
PIPE
OPTICAL LENSES
AND COLLIMATORS
14 TO 16 BITS
DWDM
PIPE
Figure 10. MEMS Mirror Control