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參數(shù)資料
| 型號： | DC1082A-B |
| 廠商： | Linear Technology |
| 文件頁數(shù)： | 23/24頁 |
| 文件大小： | 0K |
| 描述： | BOARD SAR ADC LTC1407A |
| 軟件下載： | QuikEval II System |
| 設(shè)計資源： | DC1082A Design File DC1082A Schematic |
| 標準包裝： | 1 |
| 系列： | QuikEval-II™ |
| ADC 的數(shù)量： | 1 |
| 位數(shù)： | 14 |
| 采樣率（每秒）： | 3M |
| 數(shù)據(jù)接口： | 串行，SPI? |
| 輸入范圍： | 0 ~ 2.5 V |
| 已用 IC / 零件： | LTC1407 |
| 已供物品： | 板 |
| 相關(guān)產(chǎn)品： | LTC1407HMSE#PBF-ND - IC ADC 12BIT 3MSPS 10-MSOP LTC1407HMSE#TRPBF-ND - IC ADC 12BIT 3MSPS 10-MSOP LTC1407AHMSE#TRPBF-ND - IC ADC 14BIT 3MSPS 10-MSOP LTC1407AHMSE#PBF-ND - IC ADC 14BIT 3MSPS 10-MSOP LTC1407AIMSE#PBF-ND - IC ADC 14BIT 3MSPS 10-MSOP LTC1407AIMSE-1#PBF-ND - IC ADC 14BIT 3MSPS 10-MSOP LTC1407CMSE-1#PBF-ND - IC ADC 12BIT 3MSPS 10-MSOP LTC1407CMSE#PBF-ND - IC ADC 12BIT 3MSPS 10-MSOP LTC1407ACMSE#PBF-ND - IC ADC 14BIT 3MSPS 10-MSOP LTC1407ACMSE-1#PBF-ND - IC ADC 14BIT 3MSPS 10-MSOP 更多... |
LTC1407/LTC1407A
8
1407fb
CH0+ (Pin 1): Noninverting Channel 0. CH0+ operates
fully differentially with respect to CH0– with a 0V to 2.5V
differential swing and a 0 to VDD absolute input range.
CH0– (Pin 2):
Inverting Channel 0. CH0– operates fully
differentially with respect to CH0+ with a –2.5V to 0V dif-
ferential swing and a 0 to VDD absolute input range.
VREF (Pin 3): 2.5V Internal Reference. Bypass to GND and
a solid analog ground plane with a 10μF ceramic capacitor
(or 10μF tantalum in parallel with 0.1μF ceramic). Can be
overdriven by an external reference voltage ≥ 2.55V and
≤VDD.
CH1+ (Pin 4):
Noninverting Channel 1. CH1+ operates
fully differentially with respect to CH1– with a 0V to 2.5V
differential swing and a 0 to VDD absolute input range.
CH1– (Pin 5):
Inverting Channel 1. CH1– operates fully
differentially with respect to CH1+ with a –2.5V to 0V dif-
ferential swing and a 0 to VDD absolute input range.
GND (Pins 6, 11): Ground and Exposed Pad. This single
ground pin and the Exposed Pad must be tied directly to
the solid ground plane under the part. Keep in mind that
analog signal currents and digital output signal currents
ow through these connections.
VDD (Pin 7): 3V Positive Supply. This single power pin
supplies 3V to the entire chip. Bypass to GND pin and
solid analog ground plane with a 10μF ceramic capacitor
(or 10μF tantalum) in parallel with 0.1μF ceramic. Keep in
mind that internal analog currents and digital output signal
currents ow through this pin. Care should be taken to
place the 0.1μF bypass capacitor as close to Pins 6 and 7
as possible.
SDO (Pin 8): Three-State Serial Data Output. Each pair of
output data words represent the two analog input channels
at the start of the previous conversion.
SCK (Pin 9): External Clock Input. Advances the conver-
sion process and sequences the output data on the rising
edge. One or more pulses wake from sleep.
CONV (Pin 10): Convert Start. Holds the two analog input
signals and starts the conversion on the rising edge. Two
pulses with SCK in xed high or xed low state starts Nap
mode. Four or more pulses with SCK in xed high or xed
low state starts Sleep mode.
PIN FUNCTIONS
BLOCK DIAGRAM
–
+
1
2
7
3
6
S AND H
–
+
4
5
S AND H
GND
11
EXPOSED PAD
VREF
10μF
CH0–
CH0+
CH1–
CH1+
3V
10μF
LTC1407A
8
10
9
THREE-
STATE
SERIAL
OUTPUT
PORT
MUX
2.5V
REFERENCE
TIMING
LOGIC
VDD
SDO
CONV
SCK
1407A BD
3Msps
14-BIT ADC
14-BIT
LA
TCH
14-BIT
LA
TCH
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