參數(shù)資料
型號(hào)： AD7685CRMZRL7
廠商： Analog Devices Inc
文件頁(yè)數(shù)： 18/28頁(yè)
文件大小： 0K
描述： IC ADC 16BIT PSEUDO-DIFF 10MSOP
產(chǎn)品培訓(xùn)模塊： Power Line Monitoring
Motor Control
設(shè)計(jì)資源： Parametric Measurement Unit and Supporting Components for PAD Appls Using AD5522 and AD7685 (CN0104)
Integrated Device Power Supply for PAD with Output Voltage Range 0 V to 25 V (CN0130)
標(biāo)準(zhǔn)包裝： 1,000
系列： PulSAR®
位數(shù)： 16
采樣率（每秒）： 250k
數(shù)據(jù)接口： DSP，MICROWIRE?，QSPI?，串行，SPI?
轉(zhuǎn)換器數(shù)目： 1
功率耗散（最大）： 15mW
電壓電源： 模擬和數(shù)字
工作溫度： -40°C ~ 85°C
安裝類(lèi)型： 表面貼裝
封裝/外殼： 10-TFSOP，10-MSOP（0.118"，3.00mm 寬）
供應(yīng)商設(shè)備封裝： 10-MSOP
包裝： 帶卷 (TR)
輸入數(shù)目和類(lèi)型： 1 個(gè)偽差分，單極
配用： EVAL-AD7685CBZ-ND - BOARD EVAL FOR AD7685
AD7685
Rev. C | Page 25 of 28
TRUE 16-BIT ISOLATED APPLICATION EXAMPLE
In applications where high accuracy and isolation are required,
for example, power monitoring, motor control, and some
medical equipment, the circuit given in Figure 48, using the
AD7685 and the ADuM1402C digital isolator, provides a
compact and high performance solution.
Multiple AD7685s are daisy-chained to reduce the number of
signals to isolate. Note that the SCKOUT, which is a readback of
the AD7685’s clock, has a very short skew with the DATA
signal. This skew is the channel-to-channel matching
propagation delay of the digital isolator (tPSKCD). This allows
running the serial interface at the maximum speed of the digital
isolator (45 Mbps for the ADuM1402C), which would have
been otherwise limited by the cascade of the propagation delays
of the digital isolator.
The complete analog chain runs on a 5 V single supply using
the ADR391 low dropout reference voltage and the rail-to-rail
CMOS AD8618 amplifier while offering true bipolar input range.
IN– GND
REF VDD VIOSDO
VDD1, VE1
GND1
VDD2, VE2
GND2
SCK
CNV
SDI
AD7685
1/4 AD8618
5V
1k
2V REF
±10V INPUT
5V REF
5V
10F
100nF
IN– GND
REF VDD VIOSDO
SCK
CNV
SDI
AD7685
1/4 AD8618
5V
1k
2V REF
±10V INPUT
5V REF
5V
10F
100nF
IN– GND
REF VDD VIOSDO
SCK
CNV
SDI
AD7685
1/4 AD8618
5V
1k
2V REF
±10V INPUT
5V REF
5V
10F
100nF
IN–
IN+
GND
REF VDD VIOSDO
SCK
CNV
SDI
AD7685
1/4 AD8618
5V
1k
4k
2V REF
5V
1k
100nF
10F
5V REF
2V REF
4k
±10V INPUT
5V REF
5V
10F
100nF
VIA
VIB
VOC
VOD
VOA
VOB
VIC
VID
2.7V TO 5V
100nF
DATA
SCKOUT
SCKIN
CONVERT
ADuM1402C
OUT
GND
IN
ADR391
02
96
8-
0
46
Figure 48. A True 16-Bit Isolated Simultaneous Sampling Acquisition System
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參數(shù)描述
AD7685-C-U2 制造商:Analog Devices 功能描述:250 KSPS 16-BIT PULSAR? A/D CONVERTER IN ?SOIC - Bulk
AD7685-S-U2 制造商:Analog Devices 功能描述:250 KSPS 16-BIT PULSAR? A/D CONVERTER - Bulk
AD7685XRM-U3 制造商:Analog Devices 功能描述:A/D CONVERTER 250KSPS 16-BIT PULSAR - Bulk
AD7686 制造商:AD 制造商全稱(chēng):Analog Devices 功能描述:16-Bit, +/-0.65 LSB INL, 500 kSPS PulSAR Differential ADC in MSOP/QFN
AD76861 制造商:AD 制造商全稱(chēng):Analog Devices 功能描述:18-Bit, 2 MSPS PulSAR 15 mW ADC in LFCSP (QFN)
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