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參數(shù)資料
| 型號： | DC586A |
| 廠商： | Linear Technology |
| 文件頁數(shù)： | 2/40頁 |
| 文件大?。?/td> | 0K |
| 描述： | BOARD DELTA SIGMA ADC LTC2431 |
| 軟件下載： | QuikEval System |
| 設(shè)計資源： | DC586A Design File DC586A Schematic |
| 標(biāo)準(zhǔn)包裝： | 1 |
| 系列： | QuikEval™ |
| ADC 的數(shù)量： | 2 |
| 位數(shù)： | 20 |
| 采樣率（每秒）： | 7.5 |
| 數(shù)據(jù)接口： | MICROWIRE?，串行，SPI? |
| 工作溫度： | 0°C ~ 70°C |
| 已用 IC / 零件： | LTC2431 |
| 已供物品： | 板 |
| 相關(guān)產(chǎn)品： | DC590B-ND - BOARD DEMO USB SERIAL CONTROLLER LTC2431IMS#PBF-ND - IC ADC 20BIT DIFFINPUT/REF10MSOP LTC2431CMS#TRPBF-ND - IC ADC 20BIT DIFFINPUT/REF10MSOP LTC2431IMS#TRPBF-ND - IC ADC 20BIT DIFFINPUT/REF10MSOP LTC2431CMS#PBF-ND - IC ADC 20BIT DIFFINPUT/REF10MSOP LTC2431CMS-ND - IC ADC 20BIT DIFFINPUT/REF10MSOP LTC2431IMSTR-ND - IC ADC 20BIT DIFFINPUT/REF10MSOP LTC2431IMS-ND - IC ADC 20BIT DIFFINPUT/REF10MSOP LTC2431CMSTR-ND - IC ADC 20BIT DIFFINPUT/REF10MSOP |
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LTC2430/LTC2431
10
24301f
Figure 1
UU
W
FU CTIO AL BLOCK DIAGRA
AUTOCALIBRATION
AND CONTROL
DAC
DECIMATING FIR
INTERNAL
OSCILLATOR
SERIAL
INTERFACE
ADC
∑
∫
GND
VCC
IN+
IN–
SDO
SCK
REF+
REF –
CS
FO
(INT/EXT)
2431 FD
+
–
TEST CIRCUITS
1.69k
SDO
2431 TA03
Hi-Z TO VOH
VOL TO VOH
VOH TO Hi-Z
CLOAD = 20pF
1.69k
SDO
2431 TA04
Hi-Z TO VOL
VOH TO VOL
VOL TO Hi-Z
CLOAD = 20pF
VCC
SDO (Pin 8): Three-State Digital Output. During the Data
Output period, this pin is used as the serial data output.
When the chip select CS is HIGH (CS = VCC), the SDO pin
is in a high impedance state. During the Conversion and
Sleep periods, this pin is used as the conversion status
output. The conversion status can be observed by pulling
CS LOW.
SCK (Pin 9): Bidirectional Digital Clock Pin. In Internal
Serial Clock Operation mode, SCK is used as the digital
output for the internal serial interface clock during the Data
Output period. In External Serial Clock Operation mode,
SCK is used as the digital input for the external serial
interface clock during the Data Output period. A weak
internal pull-up is automatically activated in Internal Serial
Clock Operation mode. The Serial Clock Operation mode is
determined by the logic level applied to the SCK pin at
power up or during the most recent falling edge of CS.
FO (Pin 10): Frequency Control Pin. Digital input that
controls the ADC’s notch frequencies and conversion
time. When the FO pin is connected to VCC (FO = VCC), the
converter uses its internal oscillator and the digital filter
first null is located at 50Hz. When the FO pin is connected
to GND (FO = OV), the converter uses its internal oscillator
and the digital filter first null is located at 60Hz. When FO
is driven by an external clock signal with a frequency fEOSC,
the converter uses this signal as its system clock and the
digital filter first null is located at a frequency fEOSC/2560.
UU
U
PI FU CTIO S (LTC2431)
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