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參數(shù)資料
| 型號(hào)： | AD5308 |
| 廠商： | Analog Devices, Inc. |
| 英文描述： | 2.5 V to 5.5 V Octal Voltage Output 8-/10-/12-Bit DACs in 16-Lead TSSOP |
| 中文描述： | 2.5 V至5.5 V電壓輸出8-/10-/12-Bit八路數(shù)模轉(zhuǎn)換器的16引腳TSSOP |
| 文件頁(yè)數(shù)： | 16/19頁(yè) |
| 文件大?。?/td> | 308K |
| 代理商： | AD5308 |
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REV. B
–16–
AD5308/AD5318/AD5328
1 F
V
REF
ABCD
V
DD
V
OUT
A
10 F
0.1 F
5V
AD820/
AD8519/
OP196
5V
5V
R1
10k
R2
10k
SCLK
SYNC
GND
SERIAL
INTERFACE
V
OUT
V
GND
REF192
–5V
V
OUT
B
V
OUT
C
V
OUT
H
+6V TO +16V
V
REF
EFGH
AD5308/AD5318/
AD5328
DIN
Figure 16. Bipolar Operation with the AD5308/
AD5318/AD5328
The output voltage for any input code can be calculated as
follows:
(
1
–
V
REFIN
D
R
R
)
R
REFIN
R
R
OUT
N
=
×
)
×
×
(
+
(
2
)
2
1
2
1
/
where
D
is the decimal equivalent of the code loaded to the DAC.
N
is the DAC resolution.
REFIN
is the reference voltage input.
with
REFIN
= 5 V,
R
1 =
R
2 = 10 k
:
(
Opto-Isolated Interface for Process Control Applications
The AD5308/AD5318/AD5328 have a versatile 3-wire serial
interface, making them ideal for generating accurate voltages in
process control and industrial applications. Due to noise, safety
requirements, or distance, it may be necessary to isolate the
AD5308/AD5318/AD5328 from the controller. This can easily
be achieved by using opto-isolators that will provide isolation in
excess of 3 kV. The actual data rate achieved may be limited by
the type of optocouplers chosen. The serial loading structure of
the AD5308/AD5318/AD5328 makes them ideally suited for use
in opto-isolated applications. Figure 17 shows an opto-isolated
interface to the AD5308/AD5318/AD5328 where DIN, SCLK,
and
SYNC
are driven from optocouplers. The power supply to
the part also needs to be isolated. This is done by using a trans-
former. On the DAC side of the transformer, a 5 V regulator
provides the 5 V supply required for the AD5308/AD5318/
AD5328.
V
D
V
OUT
N
=
×
)
10
2
5
/
–
V
DD
SCLK
10k
V
REF
ABCD
DIN
SYNC
V
DD
GND
V
OUT
A
0.1 F
10 F
V
REF
EFGH
V
OUT
B
SCLK
5V
REGULATOR
POWER
V
DD
SYNC
10k
V
DD
DIN
10k
V
OUT
C
V
OUT
D
AD5308/AD5318/
AD5328
V
OUT
E
V
OUT
F
V
OUT
G
V
OUT
H
Figure 17. AD5308/AD5318/AD5328 in an
Opto-Isolated Interface
Decoding Multiple AD5308/AD5318/AD5328s
The
SYNC
pin on the AD5308/AD5318/AD5328 can be used
in applications to decode a number of DACs. In this applica-
tion, the DACs in the system receive the same serial clock and
serial data but only the
SYNC
to one of the devices will be
active at any one time, allowing access to four channels in
this 16-channel system. The 74HC139 is used as a 2-to-4 line
decoder to address any of the DACs in the system. To prevent
timing errors from occurring, the enable input should be brought
to its inactive state while the coded-address inputs are changing
state. Figure 18 shows a diagram of a typical setup for decoding
multiple AD5308 devices in a system.
74HC139
V
CC
V
DD
ENABLE
CODED
ADDRESS
1G
1A
1B
DGND
1Y0
1Y1
1Y2
1Y3
SCLK
DIN
SYNC
DIN
SCLK
V
OUT
A
V
OUT
B
V
OUT
G
V
OUT
H
SYNC
DIN
SCLK
SYNC
DIN
SCLK
SYNC
DIN
SCLK
AD5308
V
OUT
A
V
OUT
B
V
OUT
G
V
OUT
H
V
OUT
A
V
OUT
B
V
OUT
G
V
OUT
H
V
OUT
A
V
OUT
B
V
OUT
G
V
OUT
H
AD5308
AD5308
AD5308
Figure 18. Decoding Multiple AD5308 Devices in a System
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| AD530D | Integtated Circuit Multiplier,Divider,Squarer,Square Rooster |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AD5308_1 | 制造商:AD 制造商全稱(chēng):Analog Devices 功能描述:2.5 V to 5.5 V Octal Voltage Output 8-/10-/12-Bit DACs in 16-Lead TSSOP |
| AD5308_11 | 制造商:AD 制造商全稱(chēng):Analog Devices 功能描述:2.5 V to 5.5 V Octal Voltage Output 8-/10-/12-Bit DACs in 16-Lead TSSOP |
| AD5308ARU | 功能描述:IC DAC 8BIT OCTAL W/BUFF 16TSSOP RoHS:否 類(lèi)別:集成電路 (IC) >> 數(shù)據(jù)采集 - 數(shù)模轉(zhuǎn)換器 系列:- 產(chǎn)品培訓(xùn)模塊:LTC263x 12-, 10-, and 8-Bit VOUT DAC Family 特色產(chǎn)品:LTC2636 - Octal 12-/10-/8-Bit SPI VOUT DACs with 10ppm/°C Reference 標(biāo)準(zhǔn)包裝:91 系列:- 設(shè)置時(shí)間:4µs 位數(shù):10 數(shù)據(jù)接口:MICROWIRE?，串行，SPI? 轉(zhuǎn)換器數(shù)目:8 電壓電源:單電源 功率耗散（最大）:2.7mW 工作溫度:-40°C ~ 85°C 安裝類(lèi)型:表面貼裝 封裝/外殼:14-WFDFN 裸露焊盤(pán) 供應(yīng)商設(shè)備封裝:14-DFN-EP（4x3） 包裝:管件 輸出數(shù)目和類(lèi)型:8 電壓，單極 采樣率（每秒）:* |
| AD5308ARU-REEL7 | 功能描述:IC DAC 8BIT OCTAL W/BUFF 16TSSOP RoHS:否 類(lèi)別:集成電路 (IC) >> 數(shù)據(jù)采集 - 數(shù)模轉(zhuǎn)換器 系列:- 產(chǎn)品培訓(xùn)模塊:LTC263x 12-, 10-, and 8-Bit VOUT DAC Family 特色產(chǎn)品:LTC2636 - Octal 12-/10-/8-Bit SPI VOUT DACs with 10ppm/°C Reference 標(biāo)準(zhǔn)包裝:91 系列:- 設(shè)置時(shí)間:4µs 位數(shù):10 數(shù)據(jù)接口:MICROWIRE?，串行，SPI? 轉(zhuǎn)換器數(shù)目:8 電壓電源:單電源 功率耗散（最大）:2.7mW 工作溫度:-40°C ~ 85°C 安裝類(lèi)型:表面貼裝 封裝/外殼:14-WFDFN 裸露焊盤(pán) 供應(yīng)商設(shè)備封裝:14-DFN-EP（4x3） 包裝:管件 輸出數(shù)目和類(lèi)型:8 電壓，單極 采樣率（每秒）:* |
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