參數(shù)資料
型號(hào)： MAX1273CPA
廠商： MAXIM INTEGRATED PRODUCTS INC
元件分類(lèi)： ADC
英文描述： Fault-Protected, 12-Bit ADCs with Software-Selectable Input Range
中文描述： 1-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDIP8
封裝： 0.300 INCH, PLASTIC, MO-058, DIP-8
文件頁(yè)數(shù)： 9/20頁(yè)
文件大小： 850K
代理商： MAX1273CPA
Input Range and Protection
The MAX1272/MAX1273 provide software-selectable
analog input voltage ranges. Program the analog input
to one of four ranges by setting the appropriate control
bits (RNG, BIP) in the control byte (Table 1). The
MAX1272 has selectable input voltage ranges extend-
ing to ±10V (±V
REF
2.4414), while the MAX1273 has
selectable input voltage ranges extending to ±V
REF
.
Figure 3 shows the equivalent input circuit.
Overvoltage circuitry at the analog input provides ±12V
fault protection for the MAX1272. This circuit limits the
current going into or out of the device to less than 2mA,
providing an added layer of protection from momentary
over/undervoltages at the analog input. The overvoltage
protection activates when the device enters power-
down mode or if V
DD
= 0.
M
Fault-Protected, 12-Bit ADCs
with Software-Selectable Input Range
_______________________________________________________________________________________
9
DIN
DOUT
SCLK
AIN
REF
V
DD
GND
SERIAL INTERFACE
LOGIC
SIGNAL
CONDITIONING
4.096V
REFERENCE
T/H
12-BIT
SAR ADC
CS
REF
IN
OUT
CLK
MAX1272
MAX1273
Figure 2. Simplified Block Diagram
BIT 7
(MSB)
BIT 6
BIT 5
BIT 4
Bit 3
BIT 2
BIT 1
BIT 0
(LSB)
START
RNG
BIP
PD
MODE1
MODE0
RESERVED
REF
BIT
NAME
START
RNG
BIP
PD
MODE1
MODE0
RESERVED
REF
DESCRIPTION
7 (MSB)
6
5
4
3
2
1
0 (LSB)
Write a logic 1 (see the
Input Data Format
section)
Selects the full-scale input voltage range (Tables 2, 3)
Selects unipolar or bipolar conversion mode (Tables 2, 3)
Selects normal operation (
PD
= 1) or power-down (
PD
= 0) mode
Selects standby power-down (STBYPD) or full power-down (FULLPD) mode (Table 4)
Selects delayed or immediate power-down mode (Table 4)
Write a logic 0
Selects external (REF = 0, default) or internal (REF = 1) reference mode
Table 1. Control-Byte Format
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MAX1273CPA+ 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 12-Bit 487ksps 4.18V 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(lèi)型:Differential 信噪比:107 dB 接口類(lèi)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
MAX1273CUA 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(lèi)型:Differential 信噪比:107 dB 接口類(lèi)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
MAX1273CUA+ 功能描述:模數(shù)轉(zhuǎn)換器 - ADC FAULT-PROTECTED 12-BIT 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(lèi)型:Differential 信噪比:107 dB 接口類(lèi)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
MAX1273CUA+T 功能描述:模數(shù)轉(zhuǎn)換器 - ADC FAULT-PROTECTED 12-BIT 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(lèi)型:Differential 信噪比:107 dB 接口類(lèi)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
MAX1273EPA 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(lèi)型:Differential 信噪比:107 dB 接口類(lèi)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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