(AD5372 / AD5373) Voltage-Output DACs - Analog Devices
Description
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Preliminary Technical Data
FEATURES
32-channel DAC in 56-LFCSP and 64-LQFP AD5372 Guaranteed monotonic to 16 bits AD5373 Guaranteed monotonic to 14 bits Maximum output voltage span of 4 × VREF (20 V) Nominal output voltage range of -4 V to +8 V Multiple, independent output spans available System calibration function allowing user-programmable offset and gain Channel grouping and addressing features Thermal Monitoring Function DSP/microcontroller-compatible serial interface 2.
5 V to 5.
5 V JEDEC-compliant digital levels
DVCC VDD VSS
32-Channel, 16/14, Serial Input, Voltage-Output DACs AD5372/AD5373
Power-on reset Digital reset (RESET) Clear function to user-defined SIGGND (CLR pin) Simultaneous update of DAC outputs (LDAC pin)
APPLICATIONS
Level setting in automatic test equipment (ATE) Variable optical attenuators (VOA) Optical switches Industrial control systems Instrumentation
FUNCTIONAL BLOCK DIAGRAM
AGND DNGD LDAC VREF0 14 TO MUX 2's n A/B MUX X2A REGISTER X2B REGISTER MUX n 2 n OFS0 REGISTER n DAC 0 REGISTER OFFSET DAC 0 BUFFER DAC 0 OUTPUT BUFFER AND POWER DOWN CONTROL BUFFER GROUP 0
CONTROL REGISTER
n 8 n n n
n = 16 FOR AD5372 n = 14 FOR AD5373 A/B SELECT REGISTER X1 REGISTER n M REGISTER C REGISTER n 8 n
VOUT0 VOUT1 VOUT2 VOUT3 VOUT4 VOUT5 VOUT6 VOUT7
SIGGND0
· · · · · ·
SYNC SDI SCLK SDO BUSY
SERIAL INTERFACE
n n n
n n
· · · · · ·
n
· · · · · ·
n
· · · · · ·
A/B MUX
· · · · · ·
X2A REGISTER X2B REGISTER
X1 REGISTER M REGISTER C REGISTER
MUX n 2
· · · · · ·
· · · · · ·
DAC 7 REGISTER
· · · · · ·
n DAC 7
· · · · · ·
OUTPUT BUFFER AND POWER DOWN CONTROL
GROUP 1 14 n OFS1 REGISTER n DAC 0 REGISTER OFFSET DAC 1 BUFFER X2A REGISTER X2B REGISTER MUX n 2 DAC 0 OUTPUT BUFFER AND POWER DOWN CONTROL
VREF1
8 RESET CLR STATE MACHINE n n n n
A/B SELECT REGISTER X1 REGISTER
8 n n
TO MUX 2's n A/B MUX n
VOUT8 VOUT9 VOUT10 VOUT11 VOUT12 VOUT13 VOUT14 VOUT15 SIGGND1
M REGISTER C REGISTER
· · · · · ·
POWER-ON RESET
n n n
n...
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