AD5737 Analog Devices, AD5737 Datasheet - Page 11

• Manufacturer Part Number: AD5737
• Description: Quad Channel, 12-Bit, Serial Input, 4-20mA Output DAC with Dynamic Power Control and HART Connectivity
• Manufacturer: Analog Devices

Specifications of AD5737

• Resolution (bits): 12bit
• Dac Settling Time: 15µs
• Max Pos Supply (v): +33V
• Single-supply: No
• Dac Type: Current Out
• Dac Input Format: Ser,SPI

Data Sheet
Pin No.
14
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
47
48
ALERT
DGND
NC
CHARTA
NC
AGND
NC
CHARTB
NC
AGND
AGND
Mnemonic
CLEAR
FAULT
RESET
AV
IGATEA
COMP
V
I
IGATEB
COMP
I
V
SW
GNDSW
GNDSW
SW
SW
GNDSW
GNDSW
SW
AV
V
I
COMP
OUT_A
OUT_B
OUT_C
BOOST_A
BOOST_B
BOOST_C
DD
CC
B
A
D
C
DCDC_A
DCDC_B
DCDC_C
B
A
D
C
HART Input Connection for DAC Channel B. For more information, see the HART Connectivity section.
Description
Active High, Edge Sensitive Input. When this pin is asserted, the output current is set to the programmed
clear code bit setting. Only channels enabled to be cleared are cleared. For more information, see the
Asynchronous Clear section. When CLEAR is active, the DAC output register cannot be written to.
Active High Output. This pin is asserted when there is no SPI activity on the interface pins for a preset time.
For more information, see the Alert Output section.
Active Low, Open-Drain Output. This pin is asserted low when any of the following conditions is detected:
open circuit, PEC error, or an overtemperature condition (see the Fault Output section).
Digital Ground.
Hardware Reset, Active Low Input.
Positive Analog Supply Pin. The voltage range is from 9 V to 33 V.
No Connect. Do not connect to this pin.
HART Input Connection for DAC Channel A. For more information, see the HART Connectivity section.
Optional Connection for External Pass Transistor. Leave this pin unconnected when using the dc-to-dc
converter. For more information, see the External PMOS Mode section.
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. For more information, see the DC-to-DC
Converter Compensation Capacitors section and the AI
Supply for Channel A Current Output Stage (see Figure 48). To use the dc-to-dc converter, connect this pin
as shown in Figure 55.
No Connect. Do not connect to this pin.
Current Output Pin for DAC Channel A.
Ground Reference Point for Analog Circuitry. This pin must be connected to 0 V.
No Connect. Do not connect to this pin.
No Connect. Do not connect to this pin.
Optional Connection for External Pass Transistor. Leave this pin unconnected when using the dc-to-dc
converter. For more information, see the External PMOS Mode section.
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. For more information, see the DC-to-DC
Converter Compensation Capacitors section and the AI
Current Output Pin for DAC Channel B.
Supply for Channel B Current Output Stage (see Figure 48). To use the dc-to-dc converter, connect this pin
as shown in Figure 55.
Ground Reference Point for Analog Circuitry. This pin must be connected to 0 V.
Switching Output for Channel B DC-to-DC Circuitry. To use the dc-to-dc converter, connect this pin as
shown in Figure 55.
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 converter, connect this pin as
shown in Figure 55.
Ground Reference Point for Analog Circuitry. This pin must be connected to 0 V.
Switching Output for Channel D DC-to-DC Circuitry. To use the dc-to-dc converter, connect this pin as
shown in Figure 55.
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 C DC-to-DC Circuitry. To use the dc-to-dc converter, connect this pin as
shown in Figure 55.
Supply for DC-to-DC Circuitry. The voltage range is from 4.5 V to 5.5 V.
Supply for Channel C Current Output Stage (see Figure 48). To use the dc-to-dc converter, connect this pin
as shown in Figure 55.
Current Output Pin for DAC Channel C.
DC-to-DC Compensation Capacitor. Connect a 10 nF capacitor from this pin to ground. Used to regulate the
feedback loop of the Channel C dc-to-dc converter. Alternatively, if using an external compensation resistor,
place a resistor in series with a capacitor to ground from this pin. For more information, see the DC-to-DC
Converter Compensation Capacitors section and the AI
Rev. A | Page 11 of 44
CC
CC
CC
Supply Requirements—Slewing section.
Supply Requirements—Slewing section.
Supply Requirements—Slewing section.
AD5737