參數(shù)資料
型號(hào)： EVAL-AD7693CBZ
廠商： Analog Devices Inc
文件頁(yè)數(shù)： 15/24頁(yè)
文件大小： 0K
描述： BOARD EVALUATION FOR AD7693
標(biāo)準(zhǔn)包裝： 1
系列： PulSAR®
ADC 的數(shù)量： 1
位數(shù)： 16
采樣率（每秒）： 500k
數(shù)據(jù)接口： 串行
輸入范圍： ±VREF
在以下條件下的電源（標(biāo)準(zhǔn)）： 18mW @ 500kSPS
工作溫度： -40°C ~ 85°C
已用 IC / 零件： AD7693
已供物品： 板
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AD7693BRMZ-ND - IC ADC 16BIT 500KSPS 10-MSOP
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AD7693
Rev. A | Page 22 of 24
CHAIN MODE WITH BUSY INDICATOR
This mode can also be used to daisy-chain multiple AD7693s
on a 3-wire serial interface while providing a busy indicator.
This feature is useful for reducing component count and wiring
connections, for example, in isolated multiconverter applications
or for systems with a limited interfacing capacity. Data readback
is analogous to clocking a shift register.
A connection diagram example using three AD7693s is shown
in Figure 44, and the corresponding timing is given in Figure 45.
When SDI and CNV are low, SDO is driven low. With SCK
high, a rising edge on CNV initiates a conversion, selects the
chain mode, and enables the busy indicator feature. In this
mode, CNV is held high during the conversion phase and the
subsequent data readback. When all ADCs in the chain have
completed their conversions, the SDO pin of the ADC closest to
the digital host (see the AD7693 ADC labeled C in Figure 44) is
driven high. This transition on SDO can be used as a busy
indicator to trigger the data readback controlled by the digital
host. The AD7693 then enters the acquisition phase and powers
down. The data bits stored in the internal shift register are
clocked out, MSB first, by subsequent SCK falling edges. For
each ADC, SDI feeds the input of the internal shift register and
is clocked by the SCK falling edge. Each ADC in the chain
outputs its data MSB first, and 16 × N + 1 clocks are required to
readback the N ADCs. Although the rising edge can be used to
capture the data, a digital host using the SCK falling edge allows
a faster reading rate and consequently more AD7693s in the
chain, provided the digital host has an acceptable hold time.
CLK
CONVERT
DATA IN
IRQ
DIGITAL HOST
CNV
SCK
SDO
SDI
CNV
SCK
SDO
SDI
CNV
SCK
SDO
SDI AD7693
B
AD7693
C
AD7693
A
06
39
4-
04
3
Figure 44. Chain Mode with Busy Indicator Connection Diagram
SDOA = SDIB
DA15 DA14 DA13
SCK
12
3
35
47
48
tEN
CONVERSION
ACQUISITION
tCONV
tCYC
tACQ
ACQUISITION
CNV = SDIA
DA1
415
tSCK
tSCKH
tSCKL
DA0
17
34
16
SDOB = SDIC
DB15 DB14 DB13
DA1
DB1DB0DA15 DA14
49
tSSDISCK
tHSDISCK
tHSDO
tDSDO
SDOC
DC15 DC14 DC13
DA1DA0
DC1DC0DA14
19
31
32
18
33
DB1DB0DA15
DB15 DB14
tDSDOSDI
tSSCKCNV
tHSCKCNV
DA0
tDSDOSDI
063
94
-04
4
Figure 45. Chain Mode with Busy Indicator Serial Interface Timing
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參數(shù)描述
EVAL-AD7693SDZ 功能描述:數(shù)據(jù)轉(zhuǎn)換 IC 開發(fā)工具 EVAL BOARD 16-bit ADC 500kSPS RoHS:否 制造商:Texas Instruments 產(chǎn)品:Demonstration Kits 類型:ADC 工具用于評(píng)估:ADS130E08 接口類型:SPI 工作電源電壓:- 6 V to + 6 V
EVAL-AD7694CB 制造商:Analog Devices 功能描述:
EVAL-AD7694CB1 制造商:AD 制造商全稱:Analog Devices 功能描述:16-Bit, 250 kSPS PulSAR ADC in MSOP
EVAL-AD7694CBZ 功能描述:BOARD EVALUATION FOR AD7694 RoHS:是 類別:編程器，開發(fā)系統(tǒng) >> 評(píng)估板 - 模數(shù)轉(zhuǎn)換器 (ADC) 系列:PulSAR® 產(chǎn)品培訓(xùn)模塊:Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:1 系列:- ADC 的數(shù)量:1 位數(shù):12 采樣率（每秒）:94.4k 數(shù)據(jù)接口:USB 輸入范圍:±VREF/2 在以下條件下的電源（標(biāo)準(zhǔn)）:- 工作溫度:-40°C ~ 85°C 已用 IC / 零件:MAX11645 已供物品:板，軟件
EVAL-AD7694SDZ 功能描述:數(shù)據(jù)轉(zhuǎn)換 IC 開發(fā)工具 EVALUATION BOARD RoHS:否 制造商:Texas Instruments 產(chǎn)品:Demonstration Kits 類型:ADC 工具用于評(píng)估:ADS130E08 接口類型:SPI 工作電源電壓:- 6 V to + 6 V
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