參數(shù)資料
型號(hào)： AD5380BSTZ-3
廠商： Analog Devices Inc
文件頁數(shù)： 29/40頁
文件大?。?/td> 0K
描述： IC DAC 14BIT 40CHAN 3V 100LQFP
產(chǎn)品培訓(xùn)模塊： Data Converter Fundamentals
DAC Architectures
產(chǎn)品變化通告： Redesign Change 28/Oct/2011
設(shè)計(jì)資源： 40 Channels of Programmable Voltage with Excellent Temperature Drift Performance Using AD5380 (CN0007)
Output Channel Monitoring Using AD5380 (CN0008)
標(biāo)準(zhǔn)包裝： 1
設(shè)置時(shí)間： 6µs
位數(shù)： 14
數(shù)據(jù)接口： I²C，并聯(lián)，串行
轉(zhuǎn)換器數(shù)目： 40
電壓電源： 單電源
功率耗散（最大）： 125mW
工作溫度： -40°C ~ 85°C
安裝類型： 表面貼裝
封裝/外殼： 100-LQFP
供應(yīng)商設(shè)備封裝： 100-LQFP（14x14）
包裝： 托盤
輸出數(shù)目和類型： 40 電壓，單極
采樣率（每秒）： 125k
Data Sheet
AD5380
Rev. C | Page 35 of 40
THERMAL MONITOR FUNCTION
The AD5380 contains a temperature shutdown function to
protect the chip in case multiple outputs are shorted. The short-
circuit current of each output amplifier is typically 40 mA.
Operating the AD5380 at 5 V produces a power dissipation of
200 mW per shorted amplifier. With five channels shorted, this
gives an extra watt of power dissipation. For the 100-lead LQFP,
the θJA is typically 44°C/W.
The thermal monitor is enabled by the user via CR8 in the
control register. The output amplifiers on the AD5380 are
automatically powered down if the die temperature exceeds
approximately 130°C. After a thermal shutdown has occurred,
the user can re-enable the part by executing a soft power-up if
the temperature has dropped below 130°C or by turning off the
thermal monitor function via the control register.
AD5380 IN A MEMS BASED OPTICAL SWITCH
In their feed-forward control paths, MEMS based optical
switches require high resolution DACs that offer high channel
density with 14-bit monotonic behavior. The 40-channel, 14-bit
AD5380 DAC satisfies these requirements. In the circuit in
Figure 43, the 0 V to 5 V outputs of the AD5380 are amplified
to achieve an output range of 0 V to 200 V, which is used to
control actuators that determine the position of MEMS mirrors
in an optical switch. The exact position of each mirror is
measured using sensors. The sensor outputs are multiplexed
into a high resolution ADC in determining the mirror position.
The control loop is closed and driven by an ADSP-21065L, a
32-bit SHARC DSP with an SPI-compatible SPORT interface.
The ADSP-21065L writes data to the DAC, controls the
multiplexer, and reads data from the ADC via the serial
interface.
ACTUATORS
FOR MEMS
MIRROR
ARRAY
SENSOR
AND
MULTIPLEXER
8-CHANNEL ADC
(AD7856)
OR
SINGLE CHANNEL
ADC (AD7671)
AD5380
14-BIT DAC
REFOUT/REFIN
AVDD
VOUT1
VOUT39
G = 50
OUTPUT RANGE
0V TO 200V
ADSP-21065L
0.01
F
03731-043
+5V
Figure 43. AD5380 in a MEMS Based Optical Switch
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
AD5380BSTZ-5 功能描述:IC DAC 14BIT 12C 40CH 5V 100LQFP RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 數(shù)模轉(zhuǎn)換器 系列:- 標(biāo)準(zhǔn)包裝:1 系列:- 設(shè)置時(shí)間:4.5µs 位數(shù):12 數(shù)據(jù)接口:串行，SPI? 轉(zhuǎn)換器數(shù)目:1 電壓電源:單電源 功率耗散（最大）:- 工作溫度:-40°C ~ 125°C 安裝類型:表面貼裝 封裝/外殼:8-SOIC（0.154"，3.90mm 寬） 供應(yīng)商設(shè)備封裝:8-SOICN 包裝:剪切帶 (CT) 輸出數(shù)目和類型:1 電壓，單極；1 電壓，雙極 采樣率（每秒）:* 其它名稱:MCP4921T-E/SNCTMCP4921T-E/SNRCTMCP4921T-E/SNRCT-ND
ad5381bst-3 制造商:Rochester Electronics LLC 功能描述:32/40-CHANNEL 3V/5V SINGLE SUPPLY 12/14-BIT VOUT DAC - Bulk 制造商:Analog Devices 功能描述:
AD5381BST-3-REEL 制造商:Analog Devices 功能描述:DAC 40-CH Resistor-String 12-bit 100-Pin LQFP T/R
AD5381BST-5 制造商:Analog Devices 功能描述:DAC 40-CH Resistor-String 12-bit 100-Pin LQFP
AD5381BST-5-REEL 制造商:Analog Devices 功能描述:DAC 40-CH Resistor-String 12-bit 100-Pin LQFP T/R
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