AD5757 Analog Devices, AD5757 Datasheet - Page 13

• Manufacturer Part Number: AD5757
• Description: Quad Channel, 16-Bit, Serial Input, 4-20mA Output DAC, Dynamic Power Control, HART Connectivity
• Manufacturer: Analog Devices

Specifications of AD5757

• Resolution (bits): 16bit
• Dac Update Rate: 60kSPS
• Dac Settling Time: 15µs
• Max Pos Supply (v): +33V
• Single-supply: No
• Dac Type: Current Out
• Dac Input Format: SPI

Data Sheet
Pin No.
51
54
56
57
58
59
61
62
63
64
Mnemonic
CHARTC
I
V
COMP
IGATED
CHARTD
REFIN
REFOUT
R
R
EPAD
OUT_D
BOOST_D
SET_D
SET_C
DCDC_D
Description
HART Input Connection for DAC Channel C.
Current Output Pin for DAC Channel D.
Supply for Channel D Current Output Stage (see Figure 49). To use the dc-to-dc feature of the device, connect as
shown in Figure 56.
DC-to-DC Compensation Capacitor. Connect a 10 nF capacitor from this pin to ground. Used to regulate the
feedback loop of the Channel D 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 AI
information).
Optional Connection for External Pass Transistor. Should be left unconnected when using the dc-to-dc converter.
See the External PMOS Mode section for more information.
HART Input Connection for DAC Channel D.
External Reference Voltage Input.
Internal Reference Voltage Output. It is recommended to place a 0.1 μF capacitor between REFOUT and
REFGND.
An external, precision, low drift 15 kΩ current setting resistor can be connected to this pin to improve the I
temperature drift performance. See the Device Features section.
An external, precision, low drift 15 kΩ current setting resistor can be connected to this pin to improve the I
temperature drift performance. See the Device Features section.
Exposed Pad. This exposed pad should be connected to AGND, or, alternatively, it can be left electrically
unconnected. It is recommended that the pad be thermally connected to a copper plane for enhanced thermal
performance.
CC
Supply Requirements—Slewing sections in the Device Features section for more
Rev. B | Page 13 of 44
AD5757
OUT_D
OUT_C