AD5755-1x AD [Analog Devices], AD5755-1x Datasheet - Page 13

• Manufacturer Part Number: AD5755-1x
• Description: Quad Channel, 16-Bit, Serial Input, 4-20mA & Voltage Output DAC, Dynamic Power Control, HART Connectivity
• Manufacturer: AD [Analog Devices]

Preliminary Technical Data
Pin No.
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
Mnemonic
ALERT
FAULT
POC
RESET
AV
COMP
CHARTA
+V
COMP
V
V
I
AV
COMP
CHARTB
+V
V
COMP
I
V
AGND
SW
GNDSW
GNDSW
SW
AV
SW
GNDSW
GNDSW
SW
AV
V
OUT_A
OUT_B
BOOST_A
OUT_A
OUT_B
BOOST_B
BOOST_C
DD
SS
SS
CC
SENSE_A
SENSE_B
_B
_A
_D
_C
LV_A
DCDC_A
LV_B
DCDC_B
_B
_A
_D
_C
Description
more information. When CLEAR is active, the DAC register cannot be written to.
Active High Output. This pin is asserted when there has been no SPI activity on the interface pins for a
predetermined time. See features section for more information.
Active Low Output. This pin is asserted low when an open circuit in current mode is detected or a short
circuit in voltage mode is detected or a PEC error is detected or an over temperature is detected (see
Features section). Open Drain Output.
Power- On Condition. This pin determines the Power on Condition. If POC=’0’ , the device is powered up
with the voltage and current channels in Tri-State mode. If POC=’1’ , the device is powered up with a 30k Ω
pull down resistor to GND on the voltage output channel, and the current channels in Tri-State mode.
Hardware Reset. Active Low Input.
Positive Analog Supply Pin. Voltage ranges from 10.8 V to 33 V.
Optional compensation capacitor connection for V
between this pin and the V
the addition of this capacitor reduces the bandwidth of the output amplifier, increasing the settling time.
Hart Input Connection for DAC Channel A
Sense connection for the positive voltage output load connection for V
V of V
DC-DC Compensation Capacitor. Connect a 10 nF capacitor from this pin to ground. Used to regulate the
feedback loop of channel A’s DC-DC converter.
Supply for channel A’s current output stage (See Figure 15). To use the DC-DC feature of the device,
connect as shown in Figure 21.
Buffered Analog Output Voltage for DAC Channel A.
Current Output Pin for DAC Channel A.
Negative Analog Supply Pin. Voltage ranges from -10.8 V to -26.4 V. This pin can be connected to 0 V if the
output voltage range is unipolar,.
Optional compensation capacitor connection for V
between this pin and the V
the addition of this capacitor reduces the bandwidth of the output amplifier, increasing the settling time.
Hart Input Connection for DAC Channel B
Sense connection for the positive voltage output load connection for V
V of V
Buffered Analog Output Voltage for DAC Channel B.
DC-DC Compensation Capacitor. Connect a 10 nF capacitor from this pin to ground. Used to regulate the
feedback loop of channel B’s DC-DC converter.
Current Output Pin for DAC Channel B.
Supply for channel B’s current output stage (See Figure 15). To use the DC-DC feature of the device,
connect as shown in Figure 21.
Ground Reference Point for Analog Circuitry. This must be connected to 0 V.
Switching output for Channel B’s DC-DC circuitry. To use the DC-DC feature of the device, connect as
shown in Figure 21.
Ground connection for DC-DC switching circuit. This pin should always be connected to GND.
Ground connection for DC-DC switching circuit. This pin should always be connected to GND.
Switching output for Channel A’s DC-DC circuitry. To use the DC-DC feature of the device, connect as
shown in Figure 21.
Negative Analog Supply Pin. Voltage ranges from -10.8 V to -26.4 V.
Switching output for Channel D’s DC-DC circuitry. To use the DC-DC feature of the device, connect as
shown in Figure 21.
Ground connections for DC-DC switching circuit. This pin should always be connected to GND.
Ground connections for DC-DC switching circuit. This pin should always be connected to GND.
Switching output for Channel C’s DC-DC circuitry. To use the DC-DC feature of the device, connect as
shown in Figure 21.
Supply for DC-DC circuitry.
Supply for channel C’s current output stage (See Figure 15). To use the DC-DC feature of the device,
connect as shown in Figure 21.
OUT_A
OUT_B
for correct operation.
for correct operation.
OUT_A
OUT_B
Rev. PrD | Page 13 of 34
pin allows the voltage output to drive up to 1 µF. It should be noted that
pin allows the voltage output to drive up to1 µF. It should be noted that
OUT_A
OUT_B
‘s output buffer. Connecting a 220 pF capacitor
‘s output buffer. Connecting a 220 pF capacitor
OUT_A
OUT_B
. This pin must stay within ±3.0
. This pin must stay within ±3.0
AD5755-1