參數(shù)資料
型號(hào)： MAX148AMJP
廠商： MAXIM INTEGRATED PRODUCTS INC
元件分類： ADC
英文描述： +2.7V to +5.25V, Low-Power, 8-Channel, Serial 10-Bit ADCs
中文描述： 8-CH 10-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, CDIP20
封裝： CERDIP-20
文件頁(yè)數(shù)： 7/24頁(yè)
文件大小： 221K
代理商： MAX148AMJP
M
+2.7V to +5.25V, Low-Power, 8-Channel,
S erial 10-Bit ADCs
_______________________________________________________________________________________
7
______________________________________________________________Pin Desc ription
V
DD
6k
DGND
DOUT
C
LOAD
50pF
C
LOAD
50pF
DGND
6k
DOUT
a)
High-Z to V
OH
and V
OL
to V
OH
b)
High-Z to V
OL
and V
OH
to V
OL
V
DD
6k
DGND
DOUT
C
LOAD
50pF
C
LOAD
50pF
DGND
6k
DOUT
a)
V
OH
to High-Z
b)
V
OL
to High-Z
Figure 1. Load Circuits for Enable Time
Figure 2. Load Circuits for Disable Time
Input to the Reference-Buffer Amplifier. To disable the reference-buffer amplifier, tie REFADJ to V
DD
.
REFADJ
12
Serial-Strobe Output. In internal clock mode, SSTRB goes low when the MAX148/MAX149 begin the
A/D conversion, and goes high when the conversion is finished. In external clock mode, SSTRB pulses
high for one clock period before the MSB decision. High impedance when
CS
is high (external clock
mode).
SSTRB
16
Serial-Data Input. Data is clocked in at SCLK’s rising edge.
DIN
17
Active-Low Chip Select. Data will not be clocked into DIN unless
CS
is low. When
CS
is high, DOUT is
high impedance.
CS
18
Serial-Clock Input. Clocks data in and out of serial interface. In external clock mode, SCLK also sets
the conversion speed. (Duty cycle must be 40% to 60%.)
SCLK
19
Reference-Buffer Output/ADC Reference Input. Reference voltage for analog-to-digital conversion.
In internal reference mode (MAX149 only), the reference buffer provides a 2.500V nominal output,
externally adjustable at REFADJ . In external reference mode, disable the internal buffer by pulling
REFADJ to V
DD
.
VREF
11
Analog Ground
AGND
13
Digital Ground
DGND
14
Serial-Data Output. Data is clocked out at SCLK’s falling edge. High impedance when
CS
is high.
DOUT
15
Three-Level Shutdown Input. Pulling
SHDN
low shuts the MAX148/MAX149 down; otherwise, they are
fully operational. Pulling
SHDN
high puts the reference-buffer amplifier in internal compensation mode.
Letting
SHDN
float puts the reference-buffer amplifier in external compensation mode.
SHDN
10
Ground reference for analog inputs. COM sets zero-code voltage in single-ended mode. Must be
stable to ±0.5LSB.
COM
9
PIN
Sampling Analog Inputs
CH0–CH7
1–8
FUNCTION
NAME
Positive Supply Voltage
V
DD
20
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MAX148BC/D 功能描述:模數(shù)轉(zhuǎn)換器 - ADC +2.7V to +5.25V Low-Power 8-Channel Serial 10-Bit ADCs 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
MAX148BCAP 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
MAX148BCAP+ 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 10-Bit 8Ch 133ksps 5.25V Precision 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
MAX148BCAP+T 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 10-Bit 8Ch 133ksps 5.25V Precision 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
MAX148BCAP-T 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
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