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AD5343 データシート(PDF) 9 Page - Analog Devices

部品番号 AD5343
部品情報  2.5 V to 5.5 V, Parallel Interface Octal Voltage Output 8-/10-/12-Bit DACs
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メーカー  AD [Analog Devices]
ホームページ  http://www.analog.com
Logo AD - Analog Devices

AD5343 データシート(HTML) 9 Page - Analog Devices

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AD5346/AD5347/AD5348
Rev. 0 | Page 9 of 24
AD5348 PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS
TOP VIEW
(Not to Scale)
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
20
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
AD5348
LDAC
A1
A0
WR
CS
AGND
VOUTD
VREFCD
VREFEF
VREFGH
VOUTC
VOUTB
VOUTA
VREFAB
PD
VDD
DB4
DB5
DB6
CLR
GAIN
DB11
DB10
DB7
DB8
DB9
12-BIT
VOUTH
VOUTG
VOUTF
VOUTE
DGND
A2
RD
BUF
DB2
DB0
DB3
DB1
Figure 9. AD5348 Pin Configuration—TSSOP
11
12
13
14
15
16
17
18
19
20
1
2
3
4
5
6
7
8
9
10
30
29
28
27
26
25
24
23
22
21
40
39
38
37
36
35
34
33
32
31
CS
AGND
VOUTD
VOUTC
VOUTB
VOUTA
DB4
DB5
DB6
DB11
DB10
DB7
DB8
DB9
VOUTH
VOUTG
VOUTF
VOUTE
RD
AGND
TOP VIEW
(Not to Scale)
AD5348
12-BIT
Figure 10. AD5348 Pin Configuration—LFCSP
Table 7. AD5348 Pin Function Descriptions
Pin Number
TSSOP
LFCSP
Mnemonic
Function
1
35
VREFGH
Reference Input for DACs G and H.
2
36
VREFEF
Reference Input for DACs E and F.
3
37
VREFCD
Reference Input for DACs C and D.
4
38, 39
VDD
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 VDD pins on the LFCSP package must be at
the same potential.
5
40
VREFAB
Reference Input for DACs A and B.
6–9,
11–14
1–4,
7–10
VOUTX
Output of DAC X. Buffered output with rail-to-rail operation.
10
5, 6
AGND
Analog Ground. Ground reference for analog circuitry.
15
11
DGND
Digital Ground. Ground reference for digital circuitry.
16
12
BUF
Buffer Control Pin. Controls whether the reference input to the DAC is buffered or unbuffered.
17
13
LDAC
Active Low Control Input. Updates the DAC registers with the contents of the input registers, which allows
all DAC outputs to be simultaneously updated.
18
14
A0
LSB Address Pin. Selects which DAC is to be written to.
19
15
A1
Address Pin. Selects which DAC is to be written to.
20
16
A2
MSB Address Pin. Selects which DAC is to be written to.
21–32
17–28
DB0–DB11
Twelve Parallel Data Inputs. DB11 is the MSB of these 12 bits.
33
29
CS
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.
34
30
RD
Active Low Read Input. Used in conjunction with CS to read data back from the internal DACs.
35
31
WR
Active Low Write Input. Used in conjunction with CS to write data to the parallel interface.
36
32
GAIN
Gain Control Pin. Controls whether the output range from the DAC is 0 V to VREF or 0 V to 2 × VREF.
37
33
CLR
Asynchronous Active Low Control Input. Clears all input registers and DAC registers to zeros.
38
34
PD
Power-Down Pin. This active low control pin puts all DACs into power-down mode.


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