AD5372_15 Datasheet, PDF (1/29 Pages) Analog Devices – 32-Channel, 16-/14-Bit, Serial Input, Voltage Output DAC

32-Channel, 16-/14-Bit,
Serial Input, Voltage Output DAC
AD5372/AD5373
FEATURES
32-channel DAC in a 64-lead LQFP and 64-lead LFCSP
AD5372/AD5373¹ guaranteed monotonic to 16/14 bits
Maximum output voltage span of 4 × VREF (20 V)
Nominal output voltage range of −4 V to +8 V
Multiple, independent output voltage spans available
System calibration function allowing user-programmable
offset and gain
Channel grouping and addressing features
Thermal shutdown function
DSP/microcontroller-compatible serial interface
SPI serial interface
2.5 V to 5.5 V JEDEC-compliant digital levels
Digital reset (RESET)
Clear function to user-defined SIGGNDx
Simultaneous update of DAC outputs
APPLICATIONS
Level setting in automatic test equipment (ATE)
Variable optical attenuators (VOA)
Optical switches
Industrial control systems
Instrumentation
DV_CC V_DD V_{SS AGND DGND}
FUNCTIONAL BLOCK DIAGRAM
LDAC
CONTROL
REGISTER
n
8
n
n
n
n = 16 FOR AD5372
n = 14 FOR AD5373
A/B SELECT ⁸
REGISTER
n
X1 REGISTER
n
M REGISTER
n
C REGISTER
TO
MUX 2s
n
X2A REGISTER
X2B REGISTER
14
OFS0
n
OFFSET
REGISTER
DAC 0
BUFFER
BUFFER
GROUP 0
n
DAC 0
n
REGISTER
DAC 0
OUTPUT BUFFER
AND POWER-
DOWN CONTROL
SYNC
SDI
SCLK
SDO
BUSY
RESET
CLR
SERIAL
INTERFACE
STATE
MACHINE
n
n
n
X1 REGISTER
n
n
M REGISTER
n
n
C REGISTER
8
A/B SELECT ⁸
REGISTER
n
n
X1 REGISTER
n
n
M REGISTER
n
n
C REGISTER
TO
MUX 2s
n
X2A REGISTER
X2B REGISTER
n
DAC 7
n
REGISTER
DAC 7
OUTPUT BUFFER
AND POWER-
DOWN CONTROL
X2A REGISTER
X2B REGISTER
14
OFS1
n
OFFSET
REGISTER
DAC 1
BUFFER
GROUP 1
BUFFER
n
DAC 0
n
REGISTER
DAC 0
OUTPUT BUFFER
AND POWER-
DOWN CONTROL
AD5372/
AD5373
n
n
X1 REGISTER
n
n
M REGISTER
n
n
C REGISTER
n
X2A REGISTER
X2B REGISTER
n
DAC 7
n
REGISTER
DAC 7
OUTPUT BUFFER
AND POWER-
DOWN CONTROL
GROUP 2 TO GROUP 3
ARE IDENTICAL TO GROUP 1
VREF1 SUPPLIES
GROUP 1 TO GROUP 3
VREF0
VOUT0
VOUT1
VOUT2
VOUT3
VOUT4
VOUT5
VOUT6
VOUT7
SIGGND0
VREF1
VOUT8
VOUT9
VOUT10
VOUT11
VOUT12
VOUT13
VOUT14
VOUT15
SIGGND1
VOUT16
TO
VOUT31
1 _{Protected by U.S. Patent No. 5,969,657.}
Figure 1.
SIGGND2
SIGGND3
Rev. C
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