Datasheet
Data Sheet AD5624R/AD5644R/AD5664R
Rev. C | Page 9 of 28
PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS
Figure 3. 10-Lead LFCSP and 10-Lead MSOP Pin Configuration
Figure 4. 12-Ball WLCSP Pin Configuration
Table 7. Pin Function Descriptions
Pin No.
LFCSP MSOP WLCSP Mnemonic Description
1 1 A3 V
OUT
A Analog Output Voltage from DAC A. The output amplifier has rail-to-rail operation.
2
2
B3
V
OUT
B
Analog Output Voltage from DAC B. The output amplifier has rail-to-rail operation.
3 3 A2, B2,
C2
GND Ground Reference Point for all Circuitry on the Part.
4 4 C3 V
OUT
C Analog Output Voltage from DAC C. The output amplifier has rail-to-rail operation.
5 5 D3 V
OUT
D Analog Output Voltage from DAC D. The output amplifier has rail-to-rail operation.
6 6 D2
SYNC
Active Low Control Input. This is the frame synchronization signal for the input data.
When
SYNC
goes low, it powers on the SCLK and DIN buffers and enables the input shift
register. Data is transferred in on the falling edges of the next 24 clocks. If
SYNC
is taken high
before the 24
th
falling edge, the rising edge of
SYNC
acts as an interrupt and the write
sequence is ignored by the device.
7 7 D1 SCLK 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 up to 50 MHz.
8 8 C1 DIN Serial Data Input. This device has a 24-bit shift register. Data is clocked into the register on the
falling edge of the serial clock input.
9 9 B1 V
DD
Power Supply Input. These parts can be operated from 2.7 V to 5.5 V, and the supply should be
decoupled with a 10 µF capacitor in parallel with a 0.1 µF capacitor to GND.
10 10 A1 V
REFIN
/V
REFOUT
The AD5624R/AD5644R/AD5664R have a common pin for reference input and reference
output. When using the internal reference, this is the reference output pin. When using an
external reference, this is the reference input pin. The default for this pin is as a reference input.
N/A N/A EPAD Exposed Pad. The exposed pad must be tied to GND on the LFCSP package.
1
V
OUT
A
10
V
REFIN
/V
REFOUT
2
V
OUT
B
9
V
DD
3
GND
8
DIN
4
V
OUT
C
7
SCLK
5
V
OUT
D
6
SYNC
AD5624R/
AD5644R/
AD5664R
TOP VIEW
(Not to Scale)
05856-003
EXPOSED
PAD TIED
T
O
GND ON LFCS
P P
ACKAGE
TOP VIEW
(BALL SIDE DOWN)
Not to Scale
GND
V
OUT
A
V
DD
GND
V
OUT
B
DIN GND V
OUT
C
SCLK SYNC V
OUT
D
1
A
B
C
D
2 3
BALL A1
INDICATOR
05856-104
V
REFIN
/
V
REFOUT