Datasheet > MAX1248-MAX1249

MAX1248-MAX1249

更新时间： 2024-11-26 22:24:55

品牌	Logo	应用领域
美信 - MAXIM		/
页数	文件大小	规格书
24页	243K
描述
2x4-Channel, Simultaneous-Sampling 14-Bit DAS

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中文翻译

获取价格

数据手册

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MAX1248-MAX1249 数据手册

19-1072; Rev 2; 5/98

+2 .7 V t o +5 .2 5 V, Lo w -P o w e r, 4 -Ch a n n e l,

S e ria l 1 0 -Bit ADCs in QS OP -1 6

8/MAX1249

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

____________________________Fe a t u re s

The MAX1248/MAX1249 10-bit data-acquisition sys-

tems combine a 4-channel multiplexer, high-bandwidth

track/hold, and serial interface with high conversion

speed and low power consumption. They operate from

a s ing le +2.7V to +5.25V s up p ly, a nd the ir a na log

inputs are software configurable for unipolar/bipolar

and single-ended/differential operation.

♦ 4-Channel Single-Ended or 2-Channel

Differential Inputs

♦ Single +2.7V to +5.25V Operation

♦ Internal 2.5V Reference (MAX1248)

♦ 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-fa mily d ig ita l s ig na l p roc e s s ors . The

MAX1248/MAX1249 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 MAX1248 has an internal 2.5V reference, while the

MAX1249 requires an external reference. Both parts

have a reference-buffer amplifier with a ±1.5% voltage

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

conversion. Accessing the serial interface automatically

p owe rs up the MAX1248/MAX1249, a nd the q uic k

turn-on time allows them to be shut down between all

conversions. This technique can cut supply current to

under 60µA at reduced sampling rates.

INL

(LSB)

PART^†

TEMP. RANGE PIN-PACKAGE

MAX1248ACPE 0°C to +70°C

16 Plastic DIP

16 QSOP

±1/2

±1

MAX1248BCPE

MAX1248ACEE

MAX1248BCEE

0°C to +70°C

±1/2

±1

16 QSOP

The MAX1248/MAX1249 are available in a 16-pin DIP

and a very small QSOP that occupies the same board

area as an 8-pin SO.

Ordering Information continued at end of data sheet.

†

Contact factory for availability of alternate surface-mount

packages.

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

MAX148/MAX149 data sheet.

________________________Ap p lic a t io n s

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

Portable Data Logging

Medical Instruments

Pen Digitizers

Data Acquisition

+3V

Battery-Powered Instruments

System Supervision

CH0

0.1µF

0V TO

+2.5V

ANALOG

INPUTS

DGND

MAX1248

CH3

AGND

COM

CPU

I/O

Pin Configuration appears at end of data sheet.

SCLK

SCK (SK)

MOSI (SO)

MISO (SI)

VREF

DIN

4.7µF

DOUT

SSTRB

SHDN

REFADJ

0.01µF

SPI and QSPI are trademarks of Motorola, Inc.

MICROWIRE is a 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.

For small orders, phone 408-737-7600 ext. 3468.

12 3 4 5 6 7...24

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与MAX1248-MAX1249相关器件

型号	品牌	获取价格	描述	数据表
MAX1249	MAXIM	获取价格	+2.7V to +5.25V, Low-Power, 4-Channel, Serial 10-Bit ADCs in QSOP-16
MAX1249	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
MAX1249ACEE	MAXIM	获取价格	+2.7V to +5.25V, Low-Power, 4-Channel, Serial 10-Bit ADCs in QSOP-16
MAX1249ACEE+	MAXIM	获取价格	ADC, Successive Approximation, 10-Bit, 1 Func, 4 Channel, Serial Access, CMOS, PDSO16, 0.1
MAX1249ACEE+T	MAXIM	获取价格	ADC, Successive Approximation, 10-Bit, 1 Func, 4 Channel, Serial Access, CMOS, PDSO16, 0.1
MAX1249ACEE-T	MAXIM	获取价格	ADC, Successive Approximation, 10-Bit, 1 Func, 4 Channel, Serial Access, CMOS, PDSO16, 0.1
MAX1249ACPE	MAXIM	获取价格	+2.7V to +5.25V, Low-Power, 4-Channel, Serial 10-Bit ADCs in QSOP-16
MAX1249AEEE	MAXIM	获取价格	+2.7V to +5.25V, Low-Power, 4-Channel, Serial 10-Bit ADCs in QSOP-16
MAX1249AEEE+	MAXIM	获取价格	暂无描述
MAX1249AEEE-T	MAXIM	获取价格	ADC, Successive Approximation, 10-Bit, 1 Func, 4 Channel, Serial Access, CMOS, PDSO16, 0.1

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