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參數(shù)資料
| 型號： | AD420ARZ-32-REEL |
| 廠商： | Analog Devices Inc |
| 文件頁數(shù)： | 6/16頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC DAC SERIAL INPUT 16BIT 24SOIC |
| 產(chǎn)品培訓(xùn)模塊： | Data Converter Fundamentals DAC Architectures |
| 標(biāo)準(zhǔn)包裝： | 1,000 |
| 設(shè)置時間： | 2.5µs |
| 位數(shù)： | 16 |
| 數(shù)據(jù)接口： | 串行 |
| 轉(zhuǎn)換器數(shù)目： | 1 |
| 電壓電源： | 單電源 |
| 功率耗散（最大）： | 176mW |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 24-SOIC（0.295"，7.50mm 寬） |
| 供應(yīng)商設(shè)備封裝： | 24-SOIC W |
| 包裝： | 帶卷 (TR) |
| 輸出數(shù)目和類型： | 2 電流，雙極 |
| 采樣率（每秒）： | 400 |
AD420
Rev. H | Page 14 of 16
AD420 PROTECTION
TRANSIENT VOLTAGE PROTECTION
The AD420 contains ESD protection diodes, which prevent
damage from normal handling. The industrial control envir-
onment can, however, subject I/O circuits to much higher
transients. To protect the AD420 from excessively high voltage
transients, such as those specified in IEC 801, external power
diodes and a surge current limiting resistor may be required, as
shown in Figure 15. The constraint on the resistor is that during
normal operation the output voltage level at IOUT must remain
within its voltage compliance limit
(IOUT × (Rp + RLOAD) ≤ VCC 2.75 V)
and the two protection diodes and resistor must have
appropriate power ratings.
00
49
4-
0
15
AD420 I
OUT
VCC
RLOAD
RP
GND
Figure 15. Output Transient Voltage Protection
BOARD LAYOUT AND GROUNDING
The AD420 ground pin, designated GND, is the high quality
ground reference point for the device. Any external loads on the
REF OUT and VOUT pins of the AD420 should be returned to
this reference point. Analog and digital ground currents should
not share a common path. Each signal should have an appropriate
analog or digital signal return routed close to it. Using this
approach, signal loops enclose a small area, minimizing the
inductive coupling of noise. Wide PC tracks, large gauge wire,
and ground planes are highly recommended to provide low
impedance signal paths.
POWER SUPPLIES AND DECOUPLING
The AD420 supply pins, VCC (Pin 23) and VLL (Pin 2), should be
decoupled to GND with 0.1 μF capacitors to eliminate high
frequency noise that may otherwise get coupled into the analog
system. High frequency ceramic capacitors are recommended.
The decoupling capacitors should be located in close proximity
to the pins and the ground line to have maximum effect. Further
reductions in noise, and improvements in performance, may be
achieved by using a larger value capacitor on the VLL pin.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AD421 | 制造商:AD 制造商全稱:Analog Devices 功能描述:Loop-Powered 4 mA to 20 mA DAC |
| AD421-00E | 功能描述:SENSOR MAG SW 20G CROS AX 8-MSOP 制造商:nve corp/sensor products 系列:AD 包裝:管件 零件狀態(tài):有效 功能:全極開關(guān) 技術(shù):霍爾效應(yīng) 極化:任意一種 感應(yīng)范圍:±2.5mT 跳閘，±1.1mT 釋放 測試條件:-40°C ~ 125°C 電壓 - 電源:4.5 V ~ 30 V 電流 - 電源（最大值）:4.5mA 電流 - 輸出（最大值）:20mA 輸出類型:開路集電極 特性:- 工作溫度:-40°C ~ 125°C（TA） 封裝/外殼:8-TSSOP，8-MSOP（0.118"，3.00mm 寬） 供應(yīng)商器件封裝:8-MSOP 標(biāo)準(zhǔn)包裝:1,000 |
| AD421-02E | 功能描述:SENSOR MAG SW 20G CROS AXS 8SOIC 制造商:nve corp/sensor products 系列:AD 包裝:管件 零件狀態(tài):有效 功能:全極開關(guān) 技術(shù):霍爾效應(yīng) 極化:任意一種 感應(yīng)范圍:±2.5mT 跳閘，±1.1mT 釋放 測試條件:-40°C ~ 125°C 電壓 - 電源:4.5 V ~ 30 V 電流 - 電源（最大值）:4.5mA 電流 - 輸出（最大值）:20mA 輸出類型:開路集電極 特性:- 工作溫度:-40°C ~ 125°C（TA） 封裝/外殼:8-SOIC（0.154"，3.90mm 寬） 供應(yīng)商器件封裝:8-SOIC 標(biāo)準(zhǔn)包裝:1,000 |
| AD42124 | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| AD42125 | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
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