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AD5343 データシート(PDF) 8 Page - Analog Devices

部品番号 AD5343
部品情報  2.5 V to 5.5 V, 230 A, Parallel Interface Dual 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
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AD5343 データシート(HTML) 8 Page - Analog Devices

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REV. 0
AD5332/AD5333/AD5342/AD5343
–8–
AD5343 FUNCTIONAL BLOCK DIAGRAM
.
.
.
.
.
.
VOUTA
BUFFER
GND
AD5343
VOUTB
PD
LOW BYTE
REGISTER
VDD
VREF
HBEN
DB7
DB0
CS
WR
A0
CLR
LDAC
RESET
POWER-ON
RESET
HIGH BYTE
REGISTER
LOW BYTE
REGISTER
HIGH BYTE
REGISTER
POWER-DOWN
LOGIC
DAC
REGISTER
DAC
REGISTER
INTER-
FACE
LOGIC
BUFFER
12-BIT
DAC
12-BIT
DAC
AD5343 PIN FUNCTION DESCRIPTIONS
Pin
No.
Mnemonic
Function
1
HBEN
This pin is used when writing to the device to determine if data is written to the high byte register or the
low byte register.
2VREF
Unbuffered reference input for both DACs.
3VOUTA
Output of DAC A. Buffered output with rail-to-rail operation.
4VOUTB
Output of DAC B. Buffered output with rail-to-rail operation.
5
GND
Ground reference point for all circuitry on the part.
6
CS
Active Low Chip Select Input. This is used in conjunction with WR to write data to the parallel interface.
7
WR
Active Low Write Input. This is used in conjunction with CS to write data to the parallel interface.
8
A0
Address pin for selecting between DAC A and DAC B.
9
CLR
Asynchronous active low control input that clears all input registers and DAC registers to zeros.
10
LDAC
Active low control input that updates the DAC registers with the contents of the input registers. This allows
all DAC outputs to be simultaneously updated.
11
PD
Power-Down Pin. This active low control pin puts all DACs into power-down mode.
12
VDD
Power Supply Pin. These parts can operate from 2.5 V to 5.5 V and the supply should be decoupled with a
10 F capacitor in parallel with a 0.1 F capacitor to GND.
13–20
DB0–DB7
Eight Parallel Data Inputs. DB7 is the MSB of these eight bits.
AD5343 PIN CONFIGURATION
TOP VIEW
(Not to Scale)
20
19
18
17
16
15
14
13
12
11
1
2
3
4
5
6
7
8
9
10
AD5343
LDAC
A0
WR
CS
GND
VREF
VOUTB
VOUTA
PD
VDD
DB0
DB1
DB2
DB3
DB4
DB5
DB6
DB7
12-BIT
CLR
HBEN


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