參數資料
| 型號： | MAX1271AENG+ |
| 廠商： | Maxim Integrated Products |
| 文件頁數： | 1/20頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC ADC 12BIT 8CH 24-DIP |
| 產品培訓模塊： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 標準包裝： | 15 |
| 類型： | 數據采集系統（DAS），ADC |
| 分辨率（位）： | 12 b |
| 采樣率（每秒）： | 110k |
| 數據接口： | 串行 |
| 電壓電源： | 單電源 |
| 電源電壓： | 4.75 V ~ 5.25 V |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 通孔 |
| 封裝/外殼： | 24-DIP（0.300"，7.62mm） |
| 供應商設備封裝： | 24-PDIP |
| 包裝： | 管件 |
General Description
The MAX1270/MAX1271 are multirange, 12-bit data-
acquisition systems (DAS) that require only a single
+5V supply for operation, yet accept signals at their
analog inputs that can span above the power-supply
rail and below ground. These systems provide eight
analog input channels that are independently software
programmable for a variety of ranges: ±10V, ±5V, 0 to
+10V, 0 to +5V for the MAX1270; ±VREF, ±VREF/2, 0 to
VREF, 0 to VREF/2 for the MAX1271. This range switch-
ing increases the effective dynamic range to 14 bits and
provides the flexibility to interface 4–20mA, ±12V, and
±15V powered sensors directly to a single +5V system.
In addition, these converters are fault protected to
±16.5V; a fault condition on any channel will not affect
the conversion result of the selected channel. Other fea-
tures include a 5MHz bandwidth track/hold, software-
selectable internal/external clock, 110ksps throughput
rate, and internal 4.096V or external reference operation.
The MAX1270/MAX1271 serial interface directly
connects to SPI/QSPI and MICROWIRE devices
without external logic.
A hardware shutdown input (SHDN) and two software-
programmable power-down modes, standby (STBYPD)
or full power-down (FULLPD), are provided for low-cur-
rent shutdown between conversions. In standby mode,
the reference buffer remains active, eliminating startup
delays.
The MAX1270/MAX1271 are available in 24-pin narrow
PDIP or space-saving 28-pin SSOP packages.
Applications
Features
12-Bit Resolution, 0.5 LSB Linearity
+5V Single-Supply Operation
SPI/QSPI and MICROWIRE-Compatible
3-Wire Interface
Four Software-Selectable Input Ranges
MAX1270: 0 to +10V, 0 to +5V, ±10V, ±5V
MAX1271: 0 to VREF, 0 to VREF/2, ±VREF,
±VREF/2
Eight Analog Input Channels
110ksps Sampling Rate
±16.5V Overvoltage-Tolerant Input Multiplexer
Internal 4.096V or External Reference
Two Power-Down Modes
Internal or External Clock
24-Pin Narrow PDIP or 28-Pin SSOP Packages
MAX1270/MAX1271
Multirange, +5V, 8-Channel,
Serial 12-Bit ADCs
________________________________________________________________ Maxim Integrated Products
1
VDD
CH0
CH1
CH2
CH3
CH4
CH5
CH6
CH7
DGND
4.7F
0.1F
0.01F
SHDN
MAX1270
MAX1271
+5V
ANALOG
INPUTS
CS
SCLK
DIN
DOUT
SSTRB
I/O
SCK
MOSI
MISO
REF
REFADJ
AGND
MC68HCXX
Typical Operating Circuit
PART
TEMP RANGE
PIN-PACKAGE
INL
(LSB)
MAX1270ACNG
0°C to +70°C
24 Narrow PDIP
±0.5
MAX1270BCNG
0°C to +70°C
24 Narrow PDIP
±1
MAX1270ACAI
0°C to +70°C
28 SSOP
±0.5
MAX1270BCAI
0°C to +70°C
28 SSOP
±1
Ordering Information
19-4782; Rev 2; 9/04
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
Pin Configurations appear at end of data sheet.
SPI and QSPI are trademarks of Motorola, Inc.
MICROWIRE is a trademark of National Semiconductor Corp.
Ordering Information continued at end of data sheet.
EVALUATION
KIT
AVAILABLE
Industrial Control Systems
Data-Acquisition Systems
Battery-Powered
Instruments
Automatic Testing
Robotics
Medical Instruments
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相關代理商/技術參數 |
參數描述 |
|---|---|
| MAX1271AENG+ | 功能描述:模數轉換器 - ADC 12-Bit 8Ch 110ksps 4.18V Precision ADC RoHS:否 制造商:Texas Instruments 通道數量:2 結構:Sigma-Delta 轉換速率: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 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-32 |
| MAX1271BCAI | 功能描述:模數轉換器 - ADC Integrated Circuits (ICs) RoHS:否 制造商:Texas Instruments 通道數量:2 結構:Sigma-Delta 轉換速率: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 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-32 |
| MAX1271BCAI+ | 功能描述:模數轉換器 - ADC 12-Bit 8Ch 110ksps 4.18V Precision ADC RoHS:否 制造商:Texas Instruments 通道數量:2 結構:Sigma-Delta 轉換速率: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 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-32 |
| MAX1271BCAI+T | 功能描述:模數轉換器 - ADC 12-Bit 8Ch 110ksps 4.18V Precision ADC RoHS:否 制造商:Texas Instruments 通道數量:2 結構:Sigma-Delta 轉換速率: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 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-32 |
| MAX1271BCAI-T | 功能描述:模數轉換器 - ADC RoHS:否 制造商:Texas Instruments 通道數量:2 結構:Sigma-Delta 轉換速率: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 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-32 |
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