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參數(shù)資料
| 型號： | AD5543 |
| 廠商： | Analog Devices, Inc. |
| 元件分類： | 圓形連接器 |
| 英文描述： | Circular Connector; No. of Contacts:4; Series:D38999; Body Material:Metal; Connecting Termination:Crimp; Connector Shell Size:13; Circular Contact Gender:Socket; Circular Shell Style:Straight Plug; Insert Arrangement:13-4 |
| 中文描述： | 電流輸出/串行輸入，16-/14-Bit援 |
| 文件頁數(shù)： | 9/12頁 |
| 文件大?。?/td> | 259K |
| 代理商： | AD5543 |
REV. A
AD5543/AD5553
–9–
Programmable Current Source
Figure 10 shows a versatile V-I conversion circuit using an
improved Howland Current Pump. In addition to the precision
current conversion it provides, this circuit enables a bidirec-
tional current flow and high voltage compliance. This circuit
can be used in 4 to 20 mA current transmitters with up to 500
of load. In Figure 10, it can be shown that if the resistor network is
matched, the load current is:
(
×
3
R
3 in theory can be made small to achieve the current needed
within the U3 output current driving capability. This circuit is
versatile such that AD8510 can deliver
±
20 mA in both direc-
tions and the voltage compliance approaches 15 V, which is
limited mainly by the supply voltages of U3. However, users
must pay attention to the compensation. Without C1, it can be
shown that the output impedance becomes:
'
R
R R
R
R
R
+
1
2
3
1
'
'
–
'
I
R
R
R
R
V
D
L
REF
=
+
)
×
2
3
1
/
(5)
Z
R
O
=
+
)
)
+
(
)
1
2
2
3
(6)
If the resistors are perfectly matched,
Z
O
is infinite, which is
desirable, and behaves as an ideal current source. On the other
hand, if they are not matched,
Z
O
can be either positive or nega-
tive. Negative can cause oscillation. As a result, C1 is needed to
prevent the oscillation. For critical applications, C1 could be
found empirically, but typically falls in the range of few pF.
V
REF
V
DD
U2
U1
AD5543/AD5553
V
L
GND
I
OUT
R
FB
AD8628
AD8510
V–
V+
V
REF
LOAD
U3
V
DD
V
SS
R3
50
I
L
V
DD
C1
10pF
R3'
50
R2
15k
R1
150k
R2'
15k
R1'
150k
Figure 10. Programmable Current Source with Bidirec-
tional Current Control and High Voltage Compliance
Capabilities
相關PDF資料 |
PDF描述 |
|---|---|
| AD5543BR | Circular Connector; No. of Contacts:4; Series:D38999; Body Material:Metal; Connecting Termination:Crimp; Connector Shell Size:13; Circular Contact Gender:Socket; Circular Shell Style:Straight Plug; Insert Arrangement:13-4 |
| AD5543BRM | Circular Connector; MIL SPEC:MIL-DTL-38999 Series III; Body Material:Metal; Series:D38999 Series III; No. of Contacts:4; Connector Shell Size:13; Connecting Termination:Crimp; Circular Shell Style:Straight Plug; Body Style:Straight RoHS Compliant: No |
| AD5553 | Circular Connector; MIL SPEC:MIL-DTL-38999 Series III; Body Material:Metal; Series:D38999 Series III; No. of Contacts:4; Connector Shell Size:13; Connecting Termination:Crimp; Circular Shell Style:Straight Plug; Body Style:Straight RoHS Compliant: No |
| AD5553CRM | Circular Connector; No. of Contacts:4; Series:D38999; Body Material:Metal; Connecting Termination:Crimp; Connector Shell Size:13; Circular Contact Gender:Pin; Circular Shell Style:Straight Plug; Insert Arrangement:13-4 |
| AD5546 | Current Output, Parallel Input, 16-/14-Bit Multiplying DACs with 4-Quadrant Resistors |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| AD5543_12 | 制造商:AD 制造商全稱:Analog Devices 功能描述:Current Output/Serial Input, 16-/14-Bit DACs |
| AD5543BR | 功能描述:IC DAC 16BIT SRLIN/CUR OUT 8SOIC RoHS:否 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 數(shù)模轉(zhuǎn)換器 系列:- 產(chǎn)品培訓模塊:Data Converter Fundamentals DAC Architectures 標準包裝:750 系列:- 設置時間:7µs 位數(shù):16 數(shù)據(jù)接口:并聯(lián) 轉(zhuǎn)換器數(shù)目:1 電壓電源:雙 ± 功率耗散（最大）:100mW 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:28-LCC（J 形引線） 供應商設備封裝:28-PLCC（11.51x11.51） 包裝:帶卷 (TR) 輸出數(shù)目和類型:1 電壓，單極；1 電壓，雙極 采樣率（每秒）:143k |
| AD5543BRM | 功能描述:IC DAC 16BIT SRLIN/CUR OUT 8MSOP RoHS:否 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 數(shù)模轉(zhuǎn)換器 系列:- 產(chǎn)品培訓模塊:Data Converter Fundamentals DAC Architectures 標準包裝:750 系列:- 設置時間:7µs 位數(shù):16 數(shù)據(jù)接口:并聯(lián) 轉(zhuǎn)換器數(shù)目:1 電壓電源:雙 ± 功率耗散（最大）:100mW 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:28-LCC（J 形引線） 供應商設備封裝:28-PLCC（11.51x11.51） 包裝:帶卷 (TR) 輸出數(shù)目和類型:1 電壓，單極；1 電壓，雙極 采樣率（每秒）:143k |
| AD5543BRM-REEL7 | 功能描述:IC DAC 16BIT SERIAL-IN 8-MSOP RoHS:否 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 數(shù)模轉(zhuǎn)換器 系列:- 標準包裝:47 系列:- 設置時間:2µs 位數(shù):14 數(shù)據(jù)接口:并聯(lián) 轉(zhuǎn)換器數(shù)目:1 電壓電源:單電源 功率耗散（最大）:55µW 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:28-SSOP（0.209"，5.30mm 寬） 供應商設備封裝:28-SSOP 包裝:管件 輸出數(shù)目和類型:1 電流，單極；1 電流，雙極 采樣率（每秒）:* |
| AD5543BRMZ | 功能描述:IC DAC 16BIT SERIAL-IN 8-MSOP RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 數(shù)模轉(zhuǎn)換器 系列:- 產(chǎn)品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:50 系列:- 設置時間:4µs 位數(shù):12 數(shù)據(jù)接口:串行 轉(zhuǎn)換器數(shù)目:2 電壓電源:單電源 功率耗散（最大）:- 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:8-TSSOP，8-MSOP（0.118"，3.00mm 寬） 供應商設備封裝:8-uMAX 包裝:管件 輸出數(shù)目和類型:2 電壓，單極 采樣率（每秒）:* 產(chǎn)品目錄頁面:1398 (CN2011-ZH PDF) |
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