MAX1247BEEE

更新时间： 2024-11-08 22:22:31

品牌	Logo	应用领域
美信 - MAXIM		/
页数	文件大小	规格书
24页	224K
描述
+2.7V, Low-Power, 4-Channel, Serial 12-Bit ADCs in QSOP-16

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MAX1247BEEE 数据手册

19-1071; Rev 1; 3/97

+2 .7 V, Lo w -P o w e r, 4 -Ch a n n e l,

S e ria l 1 2 -Bit ADCs in QS OP -1 6

6/MAX1247

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

____________________________Fe a t u re s

The MAX1246/MAX1247 12-bit data-acquisition systems

c omb ine a 4-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 MAX1246 oper-

ates from a single +2.7V to +3.6V supply; the MAX1247

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.

♦ 4-Channel Single-Ended or 2-Channel

Differential Inputs

♦ Single-Supply Operation:

+2.7V to +3.6V (MAX1246)

+2.7V to +5.25V (MAX1247)

♦ Internal 2.5V Reference (MAX1246)

♦ 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 MAX1246/MAX1247

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

♦ 16-Pin QSOP Package (same area as 8-pin SO)

The MAX1246 has an internal 2.5V reference, while the

MAX1247 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

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 MAX1246/MAX1247, 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.

INL

(LSB)

PART^†

TEMP. RANGE PIN-PACKAGE

MAX1246ACPE 0°C to +70°C

16 Plastic DIP

16 QSOP

±1/2

±1

MAX1246BCPE

MAX1246ACEE

MAX1246BCEE

0°C to +70°C

±1/2

±1

16 QSOP

Ordering Information continued at end of data sheet.

Contact factory for availability of alternate surface-mount

packages.

The MAX1246/MAX1247 are available in a 16-pin DIP and

a small QSOP that occupies the same board area as an

8-pin SO.

†

For 8-c ha nne l ve rs ions of the s e d e vic e s , s e e the

MAX146/MAX147 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

MAX1246

CH3

AGND

COM

CPU

I/O

VREF

4.7µF

SCLK

SCK (SK)

MOSI (SO)

MISO (SI)

DIN

DOUT

REFADJ

0.047µF

SSTRB

SHDN

Pin Configuration appears at end of data sheet.

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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MAX1247BEEE 替代型号

型号	品牌	替代类型	描述	数据表
MAX1247BCEE+	MAXIM	类似代替	ADC, Successive Approximation, 12-Bit, 1 Func, 4 Channel, Serial Access, CMOS, PDSO16, 0.1

与MAX1247BEEE相关器件

型号	品牌	获取价格	描述	数据表
MAX1247BEPE	MAXIM	获取价格	+2.7V, Low-Power, 4-Channel, Serial 12-Bit ADCs in QSOP-16
MAX1247BMJE	MAXIM	获取价格	+2.7V, Low-Power, 4-Channel, Serial 12-Bit ADCs in QSOP-16
MAX1247CCEE	MAXIM	获取价格	+2.7V, Low-Power, 4-Channel, Serial 12-Bit ADCs in QSOP-16
MAX1247CEEE	MAXIM	获取价格	+2.7V, Low-Power, 4-Channel, Serial 12-Bit ADCs in QSOP-16
MAX1247EVKIT	MAXIM	获取价格	Evaluation Kit for the MAX1246/MAX1247
MAX1247EVKIT-QSOP	MAXIM	获取价格	Convenient On-Board Test Points
MAX1247EVL11-QSOP	MAXIM	获取价格	Convenient On-Board Test Points
MAX1248	MAXIM	获取价格	2x4-Channel, Simultaneous-Sampling 14-Bit DAS
MAX1248	ADI	获取价格	+2.7V至+5.25V、低功耗、4通道、串行、10位ADC，QSOP-16封装
MAX1248ACEE	MAXIM	获取价格	+2.7V to +5.25V, Low-Power, 4-Channel, Serial 10-Bit ADCs in QSOP-16

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