參數(shù)資料
型號: MAX147AMJP
廠商: MAXIM INTEGRATED PRODUCTS INC
元件分類: ADC
英文描述: +2.7Low-Power, 8-Channel, Serial 12-Bit ADCs
中文描述: 8-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, CDIP20
封裝: CERAMIC, DIP-20
文件頁數(shù): 1/24頁
文件大?。?/td> 198K
代理商: MAX147AMJP
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800
_______________General Desc ription
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 external serial-interface
clock to perform successive-approximation 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
60μA 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.
________________________Applic ations
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)
54μA (1ksps, 3V supply)
1μA (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
M
+2.7V, Low-Power, 8-Channel,
S erial 12-Bit ADCs
________________________________________________________________ Maxim Integrated Products
1
V
DD
I/O
SCK (SK)
MOSI (SO)
MISO(SI)
V
SS
SHDN
SSTRB
DOUT
DIN
SCLK
CS
COM
AGND
DGND
V
DD
CH7
4.7
μ
F
0.1
μ
F
CH0
0V TO
+2.5V
ANALOG
INPUTS
MAX146
CPU
+3V
VREF
0.047
μ
F
REFADJ
__________Typic al Operating Circ uit
19-0465; Rev 1; 6/97
EVALUATION KIT
AVAILABLE
PART
MAX146
ACPP
MAX146BCPP
MAX146ACAP
MAX146BCAP
MAX146BC/D
0°C to +70°C
0°C to +70°C
0°C to +70°C
0°C to +70°C
0°C to +70°C
TEMP. RANGE
PIN-PACKAGE
20 Plastic DIP
20 Plastic DIP
20 SSOP
20 SSOP
Dice*
______________Ordering Information
Ordering Information continued at end of data sheet.
Contact factory for availability of alternate surface-mount
packages.
*Dice are specified at T
A
= +25°C, DC parameters only.
INL
(LSB)
±1/2
±1
±1/2
±1
±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.
相關(guān)PDF資料
PDF描述
MAX147BMJP +2.7Low-Power, 8-Channel, Serial 12-Bit ADCs
MAX147AEPP +2.7Low-Power, 8-Channel, Serial 12-Bit ADCs
MAX147BEPP +2.7Low-Power, 8-Channel, Serial 12-Bit ADCs
MAX147BCAP Flux Remover; Leaded Process Compatible:Yes; Peak Reflow Compatible (260 C):Yes RoHS Compliant: Yes
MAX147BEAP +2.7Low-Power, 8-Channel, Serial 12-Bit ADCs
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MAX147BC/D 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 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-32
MAX147BCAP 功能描述:模數(shù)轉(zhuǎn)換器 - ADC Integrated Circuits (ICs) 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 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-32
MAX147BCAP+ 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 12-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 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-32
MAX147BCAP+T 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 12-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 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-32
MAX147BCAP-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 安裝風格:SMD/SMT 封裝 / 箱體:VQFN-32