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參數(shù)資料
| 型號(hào)： | MAX1108-MAX1109 |
| 廠商： | Maxim Integrated Products, Inc. |
| 英文描述： | Single-Supply, Low-Power, 2-Channel, Serial 8-Bit ADCs |
| 中文描述： | 單電源，低功耗，2通道，串行8位ADC |
| 文件頁數(shù)： | 14/20頁 |
| 文件大?。?/td> | 185K |
| 代理商： | MAX1108-MAX1109 |
M
S ingle-S upply, Low-Power,
2-Channel, S erial 8-Bit ADCs
14
______________________________________________________________________________________
initiated. The MSB successive-approximation bit deci-
sion is made on the rising edge of the seventh SCLK.
On the falling edge of the eighth SCLK, the MSB is
clocked out on the DOUT pin; on each of the next
seven SCLK falling edges, the remaining bits of conver-
sion are clocked out. Zeros are clocked out on DOUT
after the LSB has been clocked out, until
CS
is dis-
abled. Then DOUT becomes high impedance and the
part is ready for another conversion (Figure 6).
The conversion must complete in 1ms, or droop on the
sample-and-hold capacitors may degrade conversion
results. Use internal clock mode if the serial-clock fre-
quency is less than 50kHz, or if serial-clock interrup-
tions could cause the conversion interval to exceed
1ms.
Internal Clock
Internal clock mode frees the μP from the burden of
running the SAR conversion clock. This allows the con-
version results to be read back at the processor’s con-
venience, at any clock rate up to 2MHz.
An internal register stores data when the conversion is
in progress. On the falling edge of the fourth SCLK,
track mode is enabled, and on the falling edge of the
eighth SCLK, acquisition is complete and internal con-
version is initiated. The internal 400kHz clock com-
pletes the conversion in 20μs typically (35μs max), at
which time the MSB of the conversion is present at the
DOUT pin. The falling edge of SCLK clocks the remain-
ing data out of this register at any time after the conver-
sion is complete (Figure 8).
CS
SCLK
DIN
DOUT
1
4
8
12
16
20
START
SEL2
MSB
LSB
SEL1
SEL0
I/ECLK I/EREF
REF
SHDN
SHDN
D7
MSB
LSB
D6
D5
D4
D3
D2
D1
D0
IDLE
IDLE
t
CONV
t
ACQ
A/D STATE
Figure 6. Single Conversion Timing, External Clock Mode
CS
SCLK
DIN
DOUT
t
CSH
t
CSS
t
CL
t
DS
t
DH
t
DV
t
CH
t
DO
t
TR
t
CSH
Figure 7. Detailed Serial-Interface Timing
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MAX1108CUB | Single-Supply, Low-Power, 2-Channel, Serial 8-Bit ADCs |
| MAX1108 | Single-Supply, Low-Power, 2-Channel, Serial 8-Bit ADCs |
| MAX1108EUB | Single-Supply, Low-Power, 2-Channel, Serial 8-Bit ADCs |
| MAX1109CUB | Single-Supply, Low-Power, 2-Channel, Serial 8-Bit ADCs |
| MAX1109EUB | Single-Supply, Low-Power, 2-Channel, Serial 8-Bit ADCs |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX1109 | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:Evaluation Kit for the MAX4135/MAX4136/MAX4137/MAX4138[MAX4135EVKIT ] |
| MAX1109CUB | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結(jié)構(gòu):Sigma-Delta 轉(zhuǎn)換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類型:Differential 信噪比:107 dB 接口類型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32 |
| MAX1109CUB+ | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 2Ch Single-Supply Low-P Serial 8-Bit RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結(jié)構(gòu):Sigma-Delta 轉(zhuǎn)換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類型:Differential 信噪比:107 dB 接口類型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32 |
| MAX1109CUB+G07 | 制造商:Maxim Integrated Products 功能描述:10 PINS UMAX PKG - Tape and Reel |
| MAX1109CUB+T | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 2Ch Single-Supply Low-P Serial 8-Bit RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結(jié)構(gòu):Sigma-Delta 轉(zhuǎn)換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類型:Differential 信噪比:107 dB 接口類型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32 |
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