MAX146ACAP

更新时间： 2024-11-04 22:34:35

品牌	Logo	应用领域
美信 - MAXIM		/
页数	文件大小	规格书
24页	198K
描述
+2.7Low-Power, 8-Channel, Serial 12-Bit ADCs

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数据手册
替代型号

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MAX146ACAP 数据手册

19-0465; Rev 1; 6/97

+2 .7 V, Lo w -P o w e r, 8 -Ch a n n e l,

S e ria l 1 2 -Bit ADCs

6/MAX147

_______________Ge n e ra l De s c rip t io n

____________________________Fe a t u re s

The MAX146/MAX147 12-bit data-acquisition systems

c omb ine a n 8-c ha nne l multip le xe r, hig h-b a nd wid th

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.

♦ 8-Channel Single-Ended or 4-Channel

Differential Inputs

♦ Single-Supply Operation:

+2.7V to +3.6V (MAX146)

+2.7V to +5.25V (MAX147)

♦ Internal 2.5V Reference (MAX146)

♦ Low Power: 1.2mA (133ksps, 3V supply)

54µA (1ksps, 3V supply)

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.

1µA (power-down mode)

♦ SPI/QSPI/Microwire/TMS320-Compatible

4-Wire Serial Interface

♦ Software-Configurable Unipolar or Bipolar Inputs

♦ 20-Pin DIP/SSOP Packages

The MAX146 has an internal 2.5V reference, while the

MAX147 requires an external reference. Both parts have

a re fe re nc e -b uffe r a mp lifie r with a ± 1.5% volta g e -

adjustment range.

______________Ord e rin g In fo rm a t io n

INL

(LSB)

PART^†

TEMP. RANGE PIN-PACKAGE

These devices provide a hard-wired SHDN pin and a

s oftwa re -s e le c ta b le p owe r-d own, a nd c a n b e p ro-

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.

MAX146ACPP

MAX146BCPP

MAX146ACAP

MAX146BCAP

MAX146BC/D

0°C to +70°C

20 Plastic DIP

20 SSOP

±1/2

±1

±1/2

±1

20 SSOP

Dice*

±1

Ordering Information continued at end of data sheet.

Contact factory for availability of alternate surface-mount

packages.

†

The MAX146/MAX147 are available in 20-pin DIP and

SSOP packages.

*Dice are specified at T = +25°C, DC parameters only.

For 4-c ha nne l ve rs ions of the s e d e vic e s , s e e the

MAX1246/MAX1247 data sheet.

__________Typ ic a l Op e ra t in g Circ u it

________________________Ap p lic a t io n s

+3V

Portable Data Logging

Medical Instruments

Pen Digitizers

Data Acquisition

CH0

0.1µF

Battery-Powered Instruments

Process Control

0V TO

+2.5V

ANALOG

INPUTS

DGND

MAX146

AGND

COM

CPU

CH7

I/O

VREF

4.7µF

SCLK

SCK (SK)

MOSI (SO)

MISO (SI)

Pin Configuration appears at end of data sheet.

DIN

DOUT

REFADJ

0.047µF

SSTRB

SHDN

SPI and QSPI are registered trademarks of Motorola, Inc.

Microwire is a registered trademark of National Semiconductor Corp.

________________________________________________________________ Maxim Integrated Products

For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800

12 3 4 5 6 7...24

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MAX146ACAP 替代型号

型号	品牌	替代类型	描述	数据表
MAX146ACAP-T	MAXIM	完全替代	ADC, Successive Approximation, 12-Bit, 1 Func, 8 Channel, Serial Access, CMOS, PDSO20, SSO
MAX146AEAP+	MAXIM	类似代替	ADC, Successive Approximation, 12-Bit, 1 Func, 8 Channel, Serial Access, CMOS, PDSO20, SSO

与MAX146ACAP相关器件

型号	品牌	获取价格	描述	数据表
MAX146ACAP+T	MAXIM	获取价格	ADC, Successive Approximation, 12-Bit, 1 Func, 8 Channel, Serial Access, CMOS, PDSO20, SSO
MAX146ACAP-T	MAXIM	获取价格	ADC, Successive Approximation, 12-Bit, 1 Func, 8 Channel, Serial Access, CMOS, PDSO20, SSO
MAX146ACPP	MAXIM	获取价格	+2.7Low-Power, 8-Channel, Serial 12-Bit ADCs
MAX146ACPP+	MAXIM	获取价格	ADC, Successive Approximation, 12-Bit, 1 Func, 8 Channel, Serial Access, CMOS, PDIP20, 0.3
MAX146ACWP	MAXIM	获取价格	Converter IC
MAX146AEAP	MAXIM	获取价格	+2.7Low-Power, 8-Channel, Serial 12-Bit ADCs
MAX146AEAP+	MAXIM	获取价格	ADC, Successive Approximation, 12-Bit, 1 Func, 8 Channel, Serial Access, CMOS, PDSO20, SSO
MAX146AEAP+T	MAXIM	获取价格	暂无描述
MAX146AEAP-T	MAXIM	获取价格	ADC, Successive Approximation, 12-Bit, 1 Func, 8 Channel, Serial Access, CMOS, PDSO20, SSO
MAX146AEPP	MAXIM	获取价格	+2.7Low-Power, 8-Channel, Serial 12-Bit ADCs

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