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AD5535
Rev. A | Page 8 of 16
Table 5. Pin Function Descriptions
Mnemonic
Description
AGND
Analog GND Pins.
AVCC
Analog Supply Pins. Voltage range from 4.75 V to 5.25 V.
VPP
Output Amplifier High Voltage Supply. Voltage range from (REF_IN × 50) + 10 V to 225 V.
V+
V+ Amplifier Supply Pins. Voltage range from 4.75 V to 5.25 V.
V–
V– Amplifier Supply Pins. Voltage range from 4.75 V to 5.25 V.
PGND
Output Amplifier Ground Reference Pins.
DGND
Digital GND Pins.
DVCC
Digital Supply Pins. Voltage range from 2.7 V to 5.25 V.
DAC_GND
Reference GND Supply for All DACs.
REF_IN
Reference Voltage for Channel 0 to Channel 31. Reference input range is 1 V to 4 V and can be used to program the full-
scale output voltage from 50 V to 200 V.
VOUT0 to VOUT31
Analog Output Voltages from the 32 Channels.
ANODE
Anode of Internal Diode for Diode Temperature Measurement.
CATHODE
Cathode of Internal Diode for Diode Temperature Measurement.
SYNC
Active Low Input. This is the frame synchronization signal for the serial interface. While SYNC is low, data is transferred in
upon the falling edge of SCLK.
Serial Clock Input. Data is clocked into the shift register upon the falling edge of SCLK. This operates at clock speeds of up
to 30 MHz.
Serial Data Input. Data must be valid upon the falling edge of SCLK.
TEST
Allows the same data to be simultaneously loaded to all channels of the AD5535. This pin is used for calibration purposes
when loading zero scale and full scale to all channels. To invoke this feature, bring the TEST pin high. In normal operation,
TEST should be tied low.
Active Low Input. This pin can also be used to reset the complete device to its power-on reset conditions. Zero code is
loaded to the DACs.
NC
No connect pins. The user should not connect any signals to these pins.
1 Internal pull-up device on logic input; therefore, it can be left floating and defaults to a logic high condition.