AD7245A/AD7248A
AD7248A PIN FUNCTION DESCRIPTION
(ANY PACKAGE)
Pin
l
2
Mnemonic
V
SS
R
OFS
Description
Negative Supply Voltage (0 V for single
supply operation).
Bipolar Offset Resistor. This provides
access to the on-chip application resistors
and allows different output voltage ranges.
Reference Output. The on-chip reference
is provided at this pin and is used when
configuring the part for bipolar outputs.
Analog Ground.
Data Bit 7.
Data Bit 6.
Data Bit 5.
Data Bit 4.
Data Bit 3.
Digital Ground.
Data Bit 2/Data Bit 10.
Data Bit 1/Data Bit 9.
Data Bit 0 (LSB)/Data Bit 8.
Pin
14
Mnemonic
CSMSB
Description
Chip Select Input for MS Nibble. (Active
LOW). This selects the upper 4 bits of the
input latch. Input data is right justified.
Chip Select Input for LS byte. (Active
LOW). This selects the lower 8 bits of the
input latch.
Write Input. This is used in conjunction
with
CSMSB
and
CSLSB
to load data
into the input latch of the AD7248A.
Load DAC Input (Active LOW). This is
an asynchronous input which when active
transfers data from the input latch to the
DAC latch.
Positive Supply Voltage.
Feedback Resistor. This allows access to
the amplifier’s feedback loop.
Output Voltage. Three different output
voltage ranges can be chosen: 0 V to
+5
V,
0 V to +10 V or –5 V to +5 V.
15
CSLSB
3
REF OUT
16
WR
4
5
6
7
8
9
10
11
12
13
AGND
DB7
DB6
DB5
DB4
DB3
DGND
DB2
DB1
DB0
17
LDAC
18
19
20
V
DD
R
FB
V
OUT
AD7248A PIN CONFIGURATIONS
DIP and SOIC
LCCC
PLCC
–6–
REV. A
AD [ ANALOG DEVICES ]
