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参数资料
| 型号： | AD7693BCPZRL7 |
| 厂商： | Analog Devices Inc |
| 文件页数： | 15/24页 |
| 文件大小： | 0K |
| 描述： | IC ADC 16BIT 500KSPS 10-LFCSP |
| 标准包装： | 1 |
| 系列： | PulSAR® |
| 位数： | 16 |
| 采样率（每秒）： | 500k |
| 数据接口： | DSP，MICROWIRE?，QSPI?，串行，SPI? |
| 转换器数目： | 1 |
| 功率耗散（最大）： | 21.5mW |
| 电压电源： | 模拟和数字 |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 10-WFDFN 裸露焊盘，CSP |
| 供应商设备封装： | 10-LFCSP-WD（3x3） |
| 包装： | 标准包装 |
| 输入数目和类型： | 1 个差分，双极 |
| 其它名称： | AD7693BCPZRL7DKR |
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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| AD7693BRMZ | 功能描述:IC ADC 16BIT 500KSPS 10-MSOP RoHS:是 类别:集成电路 (IC) >> 数据采集 - 模数转换器 系列:PulSAR® 标准包装:1 系列:microPOWER™ 位数:8 采样率（每秒）:1M 数据接口:串行，SPI? 转换器数目:1 功率耗散（最大）:- 电压电源:模拟和数字 工作温度:-40°C ~ 125°C 安装类型:表面贴装 封装/外壳:24-VFQFN 裸露焊盘 供应商设备封装:24-VQFN 裸露焊盘（4x4） 包装:Digi-Reel® 输入数目和类型:8 个单端，单极 产品目录页面:892 (CN2011-ZH PDF) 其它名称:296-25851-6 |
| AD7693BRMZRL7 | 功能描述:IC ADC 16BIT 500KSPS 10-MSOP RoHS:是 类别:集成电路 (IC) >> 数据采集 - 模数转换器 系列:PulSAR® 标准包装:1 系列:- 位数:14 采样率（每秒）:83k 数据接口:串行，并联 转换器数目:1 功率耗散（最大）:95mW 电压电源:双 ± 工作温度:0°C ~ 70°C 安装类型:通孔 封装/外壳:28-DIP（0.600"，15.24mm） 供应商设备封装:28-PDIP 包装:管件 输入数目和类型:1 个单端，双极 |
| AD7694 | 制造商:AD 制造商全称:Analog Devices 功能描述:16-Bit Lower Power |
| AD7694_05 | 制造商:AD 制造商全称:Analog Devices 功能描述:16-Bit, 250 kSPS PulSAR ADC in MSOP |
| AD7694ARM | 制造商:Rochester Electronics LLC 功能描述: 制造商:Analog Devices 功能描述: |
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