AD5346 Analog Devices, AD5346 Datasheet - Page 7

• Manufacturer Part Number: AD5346
• Description: 2.5 V to 5.5 V, Parallel Interface Octal Voltage Output 8-Bit D/A Converter
• Manufacturer: Analog Devices

Specifications of AD5346

• Resolution (bits): 8bit
• Dac Update Rate: 167kSPS
• Dac Settling Time: 6µs
• Max Pos Supply (v): +5.5V
• Single-supply: Yes
• Dac Type: Voltage Out
• Dac Input Format: Par

AD5346 PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS
Table 5. AD5346 Pin Function Descriptions
TSSOP
1
2
3
4
5
6–9,
11–14
10
15,
21–24
16
17
18
19
20
25–32
33
34
35
36
37
38
Pin Number
LFCSP
35
36
37
38, 39
40
1–4,
7–10
5, 6
11,
17–20
12
13
14
15
16
21–28
29
30
31
32
33
34
Figure 5. AD5346 Pin Configuration—TSSOP
V
V
V
V
REF
V
V
V
V
V
V
REF
REF
V
AGND
DGND
V
REF
LDAC
OUT
OUT
OUT
OUT
OUT
OUT
OUT
OUT
BUF
V
GH
CD
AB
A0
A1
DD
EF
G
A
B
C
D
H
E
F
Mnemonic
V
V
V
V
V
V
AGND
DGND
BUF
LDAC
A0
A1
A2
DB
CS
RD
WR
GAIN
CLR
PD
REF
REF
REF
DD
REF
OUT
10
11
12
13
14
15
16
17
18
19
1
2
3
4
5
6
7
8
9
0
GH
EF
CD
AB
–DB
X
(Not to Scale)
AD5346
TOP VIEW
8-BIT
7
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
20
Function
Reference Input for DACs G and H.
Reference Input for DACs E and F.
Reference Input for DACs C and D.
Power Supply Pin(s). This part can operate from 2.5 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. Both V
package must be at the same potential.
Reference Input for DACs A and B.
Output of DAC X. Buffered output with rail-to-rail operation.
Analog Ground. Ground reference for analog circuitry.
Digital Ground. Ground reference for digital circuitry.
Buffer Control Pin. Controls whether the reference input to the DAC is buffered or unbuffered.
Active Low Control Input. Updates the DAC registers with the contents of the input registers, which
allows all DAC outputs to be simultaneously updated.
LSB Address Pin. Selects which DAC is to be written to.
Address Pin. Selects which DAC is to be written to.
MSB Address Pin. Selects which DAC is to be written to.
Eight Parallel Data Inputs. DB
Active Low Chip Select Input. Used in conjunction with WR to write data to the parallel interface, or
with RD to read back data from a DAC.
Active Low Read Input. Used in conjunction with CS to read data back from the internal DACs.
Active Low Write Input. Used in conjunction with CS to write data to the parallel interface.
Gain Control Pin. Controls whether the output range from the DAC is 0 V to V
Asynchronous Active Low Control Input. Clears all input registers and DAC registers to zeros.
Power-Down Pin. This active low control pin puts all DACs into power-down mode.
PD
CLR
GAIN
WR
RD
CS
DB
DB
DB
DB
DB
DB
DB
DB
DGND
DGND
DGND
DGND
A2
7
6
5
4
3
2
1
0
Rev. 0 | Page 7 of 24
7
is the MSB of these eight bits.
V
V
V
V
V
V
V
V
AGND
AGND
OUT
OUT
OUT
OUT
OUT
OUT
OUT
OUT
G
A
B
C
D
H
E
F
Figure 6. AD5346 Pin Configuration—LFCSP
10
1
2
3
4
5
6
7
8
9
40
11
12
39
13
38
AD5346/AD5347/AD5348
37
14
(Not to Scale)
AD5346
TOP VIEW
36
15
8-BIT
16
35
DD
34
17
pins on the LFCSP
18
33
REF
32
19
or 0 V to 2 × V
20
31
30
29
28
27
26
25
24
23
22
21
RD
CS
DB
DB
DB
DB
DB
DB
DB
DB
7
6
5
4
3
2
1
0
REF.