AD7305 Analog Devices, AD7305 Datasheet - Page 9

• Manufacturer Part Number: AD7305
• Description: +3V/+5V, Rail-to-Rail Quad, 8-Bit DAC Parallel-IN
• Manufacturer: Analog Devices

Specifications of AD7305

• Resolution (bits): 8bit
• Dac Update Rate: 1MSPS
• Dac Settling Time: 1µs
• Max Pos Supply (v): +5.5V
• Single-supply: Yes
• Dac Type: Voltage Out
• Dac Input Format: Par

Table 8. AD7305 Pin Function Description
Pin No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
Mnemonic
V
V
V
V
GND
LDAC
DB7
DB6
DB5
DB4
DB3
DB2
DB1
DB0
WR
A1
A0/SHDN
V
V
V
OUT
OUT
SS
REF
DD
OUT
OUT
B
A
D
C
Description
Channel B Rail-to-Rail Buffered DAC Voltage Output. Full-scale set by reference voltage applied to V
open circuit when SHDN is enabled.
Channel A Rail-to-Rail Buffered DAC Voltage Output. Full-scale set by reference voltage applied to V
open circuit when SHDN is enabled.
Negative Power Supply Input. Specified range of operation is 0 V to –5.5 V.
Channel B Reference Input. Establishes V
Common Analog and Digital Ground.
Load DAC Register Strobe, Active Low. Simultaneously transfers data from all four input registers into the
corresponding DAC registers. Asynchronous active low input. DAC register is transparent when LDAC = 0. See Table 6
for operation.
MSB Digital Input Data Bit.
Data Bit 6.
Data Bit 5.
Data Bit 4.
Data Bit 3.
Data Bit 2.
Data Bit 1.
LSB Digital Input Data Bit.
Write Data into Input Register Control Line, Active Low. See Table 6 for operation.
Address Bit 1.
Address Bit 0/Hardware Shutdown (SHDN) Control Input, Active When Pin Is Left Floating by a Three-State Logic
Driver. Does not effect DAC register contents as long as power is present on V
Positive Power Supply Input. Specified range of operation is 2.7 V to 5.5 V.
Channel D Rail-to-Rail Buffered DAC Voltage Output. Full-scale set by reference voltage applied to V
open circuit when SHDN is enabled.
Channel C Rail-to-Rail Buffered DAC Voltage Output. Full-scale set by reference voltage applied to V
open circuit when SHDN is enabled.
V
V
LDAC
OUT
OUT
V
GND
DB7
DB6
DB5
DB4
Figure 9. AD7305 Pin Configuration
V
REF
SS
B
A
10
1
2
3
4
5
6
7
8
9
Rev. C | Page 9 of 20
(Not to Scale)
AD7305
TOP VIEW
OUT
full-scale voltage. Specified range of operation is V
20
19
18
17
16
15
14
13
12
11
V
V
V
A0/SHDN
A1
WR
DB0
DB1
DB2
DB3
OUT
OUT
DD
C
D
DD
.
AD7304/AD7305
SS
< V
REF
REF
REF
REF
REF
B pin. Output is
A pin. Output is
C pin. Output is
D pin. Output is
< V
DD
.