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参数资料
| 型号： | MAX147AEAP+ |
| 厂商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分类： | ADC |
| 英文描述： | +2.7V, Low-Power, 8-Channel, Serial 12-Bit ADCs |
| 中文描述： | 8-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PDSO20 |
| 封装： | SSOP-20 |
| 文件页数： | 1/28页 |
| 文件大小： | 746K |
| 代理商： | MAX147AEAP+ |
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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.
General Description
The MAX146/MAX147 12-bit data-acquisition systems
combine an 8-channel multiplexer, high-bandwidth
track/hold, and serial interface with high conversion
speed and low power consumption. The MAX146 oper-
ates from a single +2.7V to +3.6V supply; the MAX147
operates from a single +2.7V to +5.25V supply. Both
devices’ analog inputs are software configurable for
unipolar/bipolar and single-ended/differential operation.
The 4-wire serial interface connects directly to SPI/
QSPI and MICROWIRE devices without external
logic. A serial strobe output allows direct connection to
TMS320-family
digital
signal
processors.
The
MAX146/MAX147 use either the internal clock or an exter-
nal serial-interface clock to perform successive-approxi-
mation analog-to-digital conversions.
The MAX146 has an internal 2.5V reference, while the
MAX147 requires an external reference. Both parts have
a reference-buffer amplifier with a ±1.5% voltage-
adjustment range.
These devices provide a hard-wired SHDN pin and a
software-selectable power-down, and can be pro-
grammed to automatically shut down at the end of a con-
version. Accessing the serial interface automatically
powers up the MAX146/MAX147, and the quick turn-on
time allows them to be shut down between all conver-
sions. This technique can cut supply current to under
60A at reduced sampling rates.
The MAX146/MAX147 are available in 20-pin DIP and
SSOP packages.
For 4-channel versions of these devices, see the
MAX1246/MAX1247 data sheet.
________________________Applications
Portable Data Logging
Data Acquisition
Medical Instruments
Battery-Powered Instruments
Pen Digitizers
Process Control
____________________________Features
o 8-Channel Single-Ended or 4-Channel
Differential Inputs
o Single-Supply Operation
+2.7V to +3.6V (MAX146)
+2.7V to +5.25V (MAX147)
o Internal 2.5V Reference (MAX146)
o Low Power
1.2mA (133ksps, 3V supply)
54A (1ksps, 3V supply)
1A (power-down mode)
o SPI/QSPI/MICROWIRE/TMS320-Compatible
4-Wire Serial Interface
o Software-Configurable Unipolar or Bipolar Inputs
o 20-Pin DIP/SSOP Packages
MAX146/MAX147
+2.7V, Low-Power, 8-Channel,
Serial 12-Bit ADCs
________________________________________________________________ Maxim Integrated Products
1
VDD
I/O
SCK (SK)
MOSI (SO)
MISO (SI)
VSS
SHDN
SSTRB
DOUT
DIN
SCLK
CS
COM
AGND
DGND
VDD
CH7
4.7
F
0.1
F
CH0
0V TO
+2.5V
ANALOG
INPUTS
MAX146
CPU
+3V
VREF
0.047
F
REFADJ
Typical Operating Circuit
19-0465; Rev 2; 10/01
PART
MAX146ACPP
MAX146BCPP
MAX146ACAP
0°C to +70°C
TEMP RANGE
PIN-PACKAGE
20 Plastic DIP
20 SSOP
EVALUATION
KIT
AVAILABLE
Ordering Information
Ordering Information continued at end of data sheet.
*Dice are specified at TA = +25°C, DC parameters only.
MAX146BCAP
0°C to +70°C
20 SSOP
INL
(LSB)
±1/2
±1
±1/2
±1
SPI and QSPI are registered trademarks of Motorola, Inc.
MICROWIRE is a registered trademark of National Semiconductor
Corp.
Pin Configuration appears at end of data sheet.
MAX146BC/D
0°C to +70°C
Dice*
±1
相关PDF资料 |
PDF描述 |
|---|---|
| MAX147ACAP+T | +2.7V, Low-Power, 8-Channel, Serial 12-Bit ADCs |
| MAX147ACAP+ | +2.7V, Low-Power, 8-Channel, Serial 12-Bit ADCs |
| MAX146BEPP+ | +2.7V, Low-Power, 8-Channel, Serial 12-Bit ADCs |
| MAX146BEAP+ | +2.7V, Low-Power, 8-Channel, Serial 12-Bit ADCs |
| MAX146BEAP+T | +2.7V, Low-Power, 8-Channel, Serial 12-Bit ADCs |
相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX147AEAP+ | 功能描述:模数转换器 - ADC 12-Bit 8Ch 133ksps 5.25V Precision ADC RoHS:否 制造商:Texas Instruments 通道数量:2 结构:Sigma-Delta 转换速率:125 SPs to 8 KSPs 分辨率:24 bit 输入类型:Differential 信噪比:107 dB 接口类型:SPI 工作电源电压:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-32 |
| MAX147AEAP+T | 功能描述:模数转换器 - ADC 12-Bit 8Ch 133ksps 5.25V Precision ADC RoHS:否 制造商:Texas Instruments 通道数量:2 结构:Sigma-Delta 转换速率:125 SPs to 8 KSPs 分辨率:24 bit 输入类型:Differential 信噪比:107 dB 接口类型:SPI 工作电源电压:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-32 |
| MAX147AEAP-T | 功能描述:模数转换器 - ADC RoHS:否 制造商:Texas Instruments 通道数量:2 结构:Sigma-Delta 转换速率:125 SPs to 8 KSPs 分辨率:24 bit 输入类型:Differential 信噪比:107 dB 接口类型:SPI 工作电源电压:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-32 |
| MAX147AEPP | 功能描述:模数转换器 - ADC RoHS:否 制造商:Texas Instruments 通道数量:2 结构:Sigma-Delta 转换速率:125 SPs to 8 KSPs 分辨率:24 bit 输入类型:Differential 信噪比:107 dB 接口类型:SPI 工作电源电压:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-32 |
| MAX147AEPP+ | 功能描述:模数转换器 - ADC 12-Bit 8Ch 133ksps 5.25V Precision ADC RoHS:否 制造商:Texas Instruments 通道数量:2 结构:Sigma-Delta 转换速率:125 SPs to 8 KSPs 分辨率:24 bit 输入类型:Differential 信噪比:107 dB 接口类型:SPI 工作电源电压:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-32 |
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