參數(shù)資料
型號(hào): MAX147EVC32-DIP
廠商: Maxim Integrated Products
文件頁(yè)數(shù): 5/24頁(yè)
文件大小: 0K
描述: EVAL KIT FOR MAX147
產(chǎn)品培訓(xùn)模塊: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
標(biāo)準(zhǔn)包裝: 1
ADC 的數(shù)量: 1
位數(shù): 12
采樣率(每秒): 133k
數(shù)據(jù)接口: 串行
輸入范圍: ±VREF/2
在以下條件下的電源(標(biāo)準(zhǔn)): 2.7mW @ 133kSPS
工作溫度: 0°C ~ 70°C
已用 IC / 零件: MAX147
已供物品: 2 板,樣品,CD
MAX146/MAX147
+2.7V, Low-Power, 8-Channel,
Serial 12-Bit ADCs
______________________________________________________________________________________
13
tSDV
tSSTRB
PD0 CLOCKED IN
tSTR
SSTRB
SCLK
CS
tSSTRB
Figure 8. External Clock Mode SSTRB Detailed Timing
External Clock
In external clock mode, the external clock not only shifts
data in and out, but it also drives the analog-to-digital
conversion steps. SSTRB pulses high for one clock
period after the last bit of the control byte. Succes-
sive-approximation bit decisions are made and appear
at DOUT on each of the next 12 SCLK falling edges
(Figure 6). SSTRB and DOUT go into a high-impedance
state when CS goes high; after the next CS falling edge,
SSTRB outputs a logic low. Figure 8 shows the SSTRB
timing in external clock mode.
The conversion must complete in some minimum time,
or droop on the sample-and-hold capacitors may
degrade conversion results. Use internal clock mode if
the serial clock frequency is less than 100kHz, or if
serial clock interruptions could cause the conversion
interval to exceed 120s.
Internal Clock
In internal clock mode, the MAX146/MAX147 generate
their own conversion clocks internally. This frees the P
from the burden of running the SAR conversion clock
and allows the conversion results to be read back at the
CS
SCLK
DIN
DOUT
tCSH
tCSS
tCL
tDS
tDH
tDV
tCH
tDO
tTR
tCSH
Figure 7. Detailed Serial-Interface Timing
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MAX147EVC16-DIP EVAL KIT FOR MAX147
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