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參數(shù)資料
| 型號： | EVAL-AD7983SDZ |
| 廠商： | Analog Devices Inc |
| 文件頁數(shù)： | 22/24頁 |
| 文件大?。?/td> | 0K |
| 描述： | BOARD EVAL FOR AD7983 |
| 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）： | 1.33M |
| 數(shù)據(jù)接口： | DSP，MICROWIRE?，QSPI?，串行，SPI? |
| 輸入范圍： | 0 ~ VREF |
| 在以下條件下的電源（標(biāo)準(zhǔn)）： | 10.5mW @ 1.33MSPS |
| 工作溫度： | -40°C ~ 85°C |
| 已用 IC / 零件： | AD7983 |
| 已供物品： | 板 |
AD7983
Rev. A | Page 7 of 24
PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS
REF 1
VDD 2
IN+ 3
IN– 4
VIO
10
SDI
9
SCK
8
SDO
7
GND 5
CNV
6
06
97
4
-00
4
AD7983
TOP VIEW
(Not to Scale)
Figure 4. 10-Lead MSOP Pin Configuration
REF 1
10 VIO
VDD 2
9 SDI
IN+ 3
8 SCK
IN– 4
7 SDO
6 CNV
AD7983
TOP VIEW
(Not to Scale)
06
97
4-
00
5
GND 5
Figure 5. 10-Lead QFN (LFCSP) Pin Configuration
Table 6. Pin Function Descriptions
Pin No.
Mnemonic
Description
1
REF
AI
Reference Input Voltage. The REF range is from 2.9 V to 5.1 V. It is referred to the GND pin. This pin should
be decoupled closely to the pin with a 10 μF capacitor.
2
VDD
P
Power Supply.
3
IN+
AI
Analog Input. It is referred to IN. The voltage range, for example, the difference between IN+ and IN, is
0 V to VREF.
4
IN
AI
Analog Input Ground Sense. To be connected to the analog ground plane or to a remote sense ground.
5
GND
P
Power Supply Ground.
6
CNV
DI
Convert Input. This input has multiple functions. On its risng edge, it initiates the conversions and
selects the interface mode of the part: chain or CS mode. In CS mode, it enables the SDO pin when low.
In chain mode, the data should be read when CNV is high.
7
SDO
DO
Serial Data Output. The conversion result is output on this pin. It is synchronized to SCK.
8
SCK
DI
Serial Data Clock Input. When the part is selected, the conversion result is shifted out by this clock.
9
SDI
DI
Serial Data Input. This input provides multiple features. It selects the interface mode of the ADC as
follows:
Chain mode is selected if SDI is low during the CNV rising edge. In this mode, SDI is used as a data
input to daisy-chain the conversion results of two or more ADCs onto a single SDO line. The digital
data level on SDI is output on SDO with a delay of 16 SCK cycles.
CS mode is selected if SDI is high during the CNV rising edge. In this mode, either SDI or CNV can
enable the serial output signals when low; if SDI or CNV is low when the conversion is complete,
the busy indicator feature is enabled.
10
VIO
P
Input/Output Interface Digital Power. Nominally at the same supply as the host interface (1.8 V, 2.5 V,
3 V, or 5 V).
1 AI = analog input, DI = digital input, DO = digital output, and P = power.
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