AD5780ACPZ AD [Analog Devices], AD5780ACPZ Datasheet - Page 9

• Manufacturer Part Number: AD5780ACPZ
• Manufacturer: AD [Analog Devices]

Data Sheet
PIN CONFIGURATION AND FUNCTION DESCRIPTIONS
Table 5. Pin Function Descriptions
Pin No.
1
2
3, 5
4
6
7
8
9
10, 21,
22, 23
11
12
13
14
15
16
17, 18
19
20
24
EPAD
Mnemonic
V
V
V
RESET
CLR
LDAC
V
IOV
DNC
SDO
SDIN
SCLK
SYNC
DGND
V
V
AGND
R
INV
V
FB
OUT
REFP
DD
CC
REFN
SS
SS
CC
Description
Analog Output Voltage.
Positive Reference Voltage Input. A voltage in the range of 5 V to V
Positive Analog Supply Connection. A voltage in the range of 7.5 V to 16.5 V can be connected to this pin. V
decoupled to AGND.
Active Low Reset. Asserting this pin returns the
Active Low Input. Asserting this pin sets the DAC register to a user defined value (see
output. The output value depends on the DAC register coding that is being used, either binary or twos complement.
Active Low Load DAC Logic Input. This pin is used to update the DAC register and, consequently, the analog output.
When tied permanently low, the output is updated on the rising edge of SYNC. If LDAC is held high during the write cycle,
the input register is updated, but the output update is held off until the falling edge of LDAC. Do not leave the LDAC pin
unconnected.
Digital Supply. Voltage range is from 2.7 V to 5.5 V. V
Digital Interface Supply. Digital threshold levels are referenced to the voltage applied to this pin. Voltage range is from
1.71 V to 5.5 V.
Do Not Connect. Do not connect to these pins.
Serial Data Output.
Serial Data Input. This device has a 24-bit input shift register. Data is clocked into the register on the falling edge of the
serial clock input.
Serial Clock Input. Data is clocked into the input shift register on the falling edge of the serial clock input. Data can be
transferred at rates of up to 35 MHz.
Level Triggered Control Input (Active Low). This is the frame synchronization signal for the input data. When SYNC goes
low, it enables the input shift register, and data is then transferred in on the falling edges of the following clocks. The DAC
is updated on the rising edge of SYNC.
Ground Reference Pin for Digital Circuitry.
Negative Reference Voltage Input.
Negative Analog Supply Connection. A voltage in the range of −16.5 V to −2.5 V can be connected to this pin.
V
Ground Reference Pin for Analog Circuitry.
Feedback Connection for External Amplifier. See the
Inverting Input Connection for External Amplifier. See the
Negative Analog Supply Connection (V
must be decoupled to AGND. The paddle can be left electrically unconnected provided that a supply connection is made
at the V
performance.
SS
must be decoupled to AGND.
SS
pins. It is recommended that the paddle be thermally connected to a copper plane for enhanced thermal
Figure 5. Pin Configuration
(Not to Scale)
SS
Rev. C | Page 9 of 28
AD5780
TOP VIEW
). A voltage in the range of −16.5 V to −2.5 V can be connected to this pin. V
AD5780
CC
AD5780
should be decoupled to DGND.
to its power-on status.
AD5780
Features
DD
Features
− 2.5 V can be connected to this pin.
section for further details.
section for further details.
Table 12
) and updates the DAC
DD
AD5780
must be
SS