AD5755 Analog Devices, AD5755 Datasheet - Page 14

• Manufacturer Part Number: AD5755
• Description: Quad Channel, 16-Bit, Serial Input,
• Manufacturer: Analog Devices

Specifications of AD5755

• Resolution (bits): 16bit
• Dac Update Rate: 91kSPS
• Dac Settling Time: 11µs
• Max Pos Supply (v): +33V
• Single-supply: No
• Dac Type: I or V Out
• Dac Input Format: SPI

AD5755
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
Mnemonic
ALERT
FAULT
POC
RESET
AV
COMP
−V
+V
COMP
V
V
I
AV
COMP
−V
+V
V
COMP
I
V
AGND
SW
GNDSW
GNDSW
SW
AV
SW
GNDSW
GNDSW
OUT_A
OUT_B
BOOST_A
OUT_A
OUT_B
BOOST_B
DD
SENSE_A
SENSE_A
SS
SENSE_B
SENSE_B
SS
B
A
D
LV_A
DCDC_A
LV_B
DCDC_B
B
A
D
C
Description
Active High Output. This pin is asserted when there has been no SPI activity on the interface pins for a
predetermined time. See the Device Features section for more information.
Active Low Output. This pin is asserted low when an open circuit in current mode is detected, a short circuit in
voltage mode is detected, a PEC error is detected, or an overtemperature is detected (see the Device Features
section). Open-drain output.
Power-On Condition. This pin determines the power-on condition and is read during power-on or, alternatively,
after a device reset. If POC = 0, the device is powered up with the voltage and current channels in tristate mode.
If POC = 1, the device is powered up with a 30 kΩ pull-down resistor to ground on the voltage output channel,
and the current channel is in tristate mode.
Hardware Reset, Active Low Input.
Positive Analog Supply. The voltage range is from 9 V to 33 V.
Optional Compensation Capacitor Connection for V
this pin and the V
reduces the bandwidth of the output amplifier, increasing the settling time.
Sense Connection for the Negative Voltage Output Load Connection for V
of AGND for specified operation.
Sense Connection for the Positive Voltage Output Load Connection for V
DC-to-DC Compensation Capacitor. Connect a 10 nF capacitor from this pin to ground. Used to regulate the
feedback loop of the Channel A dc-to-dc converter. Alternatively, if using an external compensation resistor,
place a resistor in series with a capacitor to ground from this pin (see the DC-to-DC Converter Compensation
Capacitors and the AICC Supply Requirements—Slewing sections in the Device Features section for more
information).
Supply for Channel A Current Output Stage (see Figure 72). This is also the supply for the V
regulated to 15 V by the dc-to-dc converter. To use the dc-to-dc feature of the device, connect as shown in
Figure 78.
Buffered Analog Output Voltage for DAC Channel A.
Current Output Pin for DAC Channel A.
Negative Analog Supply Pin. Voltage range is from −10.8 V to −26.4 V.
Optional Compensation Capacitor Connection for V
this pin and the V
reduces the bandwidth of the output amplifier, increasing the settling time.
Sense Connection for the Negative Voltage Output Load Connection for V
of AGND for specified operation.
Sense Connection for the Positive Voltage Output Load Connection for V
Buffered Analog Output Voltage for DAC Channel B.
DC-to-DC Compensation Capacitor. Connect a 10 nF capacitor from this pin to ground. Used to regulate the
feedback loop of the Channel B dc-to-dc converter. Alternatively, if using an external compensation resistor,
place a resistor in series with a capacitor to ground from this pin (see the DC-to-DC Converter Compensation
Capacitors and the AICC Supply Requirements—Slewing sections in the Device Features section for more
information).
Current Output Pin for DAC Channel B.
Supply for Channel B Current Output Stage (see Figure 72). This is also the supply for the V
regulated to 15 V by the dc-to-dc converter. To use the dc-to-dc feature of the device, connect as shown in
Figure 78.
Ground Reference Point for Analog Circuitry. This must be connected to 0 V.
Switching Output for Channel B DC-to-DC Circuitry. To use the dc-to-dc feature of the device, connect as shown
in Figure 78.
Ground Connection for DC-to-DC Switching Circuit. This pin should always be connected to ground.
Ground Connection for DC-to-DC Switching Circuit. This pin should always be connected to ground.
Switching Output for Channel A DC-to-DC Circuitry. To use the dc-to-dc feature of the device, connect as shown
in Figure 78.
Negative Analog Supply Pin. The voltage range is from −10.8 V to −26.4 V.
Switching Output for Channel D DC-to-DC Circuitry. To use the dc-to-dc feature of the device, connect as shown
in Figure 78.
Ground Connections for DC-to-DC Switching Circuit. This pin should always be connected to ground.
Ground Connections for DC-to-DC Switching Circuit. This pin should always be connected to ground.
OUT_A
OUT_B
pin allows the voltage output to drive up to 2 μF. Note that the addition of this capacitor
pin allows the voltage output to drive up to 2 μF. Note that the addition of this capacitor
Rev. A | Page 14 of 52
OUT_A
OUT_B
Output Buffer. Connecting a 220 pF capacitor between
Output Buffer. Connecting a 220 pF capacitor between
OUT_A
OUT_B
OUT_A
OUT_B
.
.
. This pin must stay within ±3.0 V
. This pin must stay within ±3.0 V
OUT_x
OUT_x
stage, which is
stage, which is
Data Sheet