Datasheet > MAX149AMJP+

MAX149AMJP+

更新时间： 2023-01-02 17:13:11

品牌	Logo	应用领域
美信 - MAXIM		转换器
页数	文件大小	规格书
23页	1922K
描述
ADC, Successive Approximation, 10-Bit, 1 Func, 8 Channel, Serial Access, CDIP20, CERDIP-20

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技术参数
数据手册

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MAX149AMJP+ 技术参数

是否Rohs认证：	符合	生命周期：	Obsolete
零件包装代码：	DIP	包装说明：	CERDIP-20
针数：	20	Reach Compliance Code：	compliant
ECCN代码：	3A001.A.2.C	HTS代码：	8542.39.00.01
风险等级：	5.71	最大模拟输入电压：	1.25 V
最小模拟输入电压：	-1.25 V	最长转换时间：	65 µs
转换器类型：	ADC, SUCCESSIVE APPROXIMATION	JESD-30 代码：	R-GDIP-T20
最大线性误差 (EL)：	0.0488%	模拟输入通道数量：	8
位数：	10	功能数量：	1
端子数量：	20	最高工作温度：	125 °C
最低工作温度：	-55 °C	输出位码：	BINARY, 2'S COMPLEMENT BINARY
输出格式：	SERIAL	封装主体材料：	CERAMIC, GLASS-SEALED
封装代码：	DIP	封装形状：	RECTANGULAR
封装形式：	IN-LINE	峰值回流温度（摄氏度）：	NOT SPECIFIED
认证状态：	Not Qualified	采样速率：	0.133 MHz
采样并保持/跟踪并保持：	TRACK	座面最大高度：	5.08 mm
标称供电电压：	3 V	表面贴装：	NO
温度等级：	MILITARY	端子形式：	THROUGH-HOLE
端子节距：	2.54 mm	端子位置：	DUAL
处于峰值回流温度下的最长时间：	NOT SPECIFIED	宽度：	7.62 mm

MAX149AMJP+ 数据手册

19-0464; Rev 3; 5/09

+2.7V to +5.25V, Low-Power, 8-Channel,

Serial 10-Bit ADCs

General Description

Features

S 8-Channel Single-Ended or 4-Channel Differential

The MAX148/MAX149 10-bit data-acquisition systems

combine an 8-channel multiplexer, high-bandwidth

track/hold, and serial interface with high conversion

speed and low power consumption. They operate from a

single +2.7V to +5.25V supply, and sample to 133ksps.

Both devices’ analog inputs are software configurable for

unipolar/bipolar and single-ended/differential operation.

Inputs

S Single-Supply Operation: +2.7V to +5.25V

S Internal 2.5V Reference (MAX149)

S Low Power: 1.2mA (133ksps, 3V Supply)

54µA (1ksps, 3V Supply)

The 4-wire serial interface connects directly to SPIK/

QSPIK and MICROWIREK devices without external

logic. A serial-strobe output allows direct connection to

TMS320-family digital signal processors. The MAX148/

MAX149 use either the internal clock or an external seri-

al-interface clock to perform successive-approximation

analog-to-digital conversions.

1µA (Power-Down Mode)

S SPI/QSPI/MICROWIRE/TMS320-Compatible 4-Wire

Serial Interface

S Software-Configurable Unipolar or Bipolar Inputs

S 20-Pin DIP/SSOP Packages

The MAX149 has an internal 2.5V reference, while the

MAX148 requires an external reference. Both parts

have a reference-buffer amplifier with a Q1.5% voltage-

adjustment range.

Ordering Information

PIN-

INL

PART†

TEMP RANGE

PACKAGE

(LSB)

MAX148ACPP

MAX148BCPP

MAX148ACAP

MAX148BCAP

0°C to +70°C

20PlasticDIP

20 SSOP

1/2

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

conversion. Accessing the serial interface automatically

powers up the MAX148/MAX149, and the quick turn-on

time allows them to be shut down between all conver-

sions. This technique can cut supply current to under

60FA at reduced sampling rates.

1/2

20 SSOP

Ordering Information continued at end of data sheet.

†

Contact factory for availability of alternate surface-mount

package. Specify lead-free by placing + by the part number

when ordering.

The MAX148/MAX149 are available in a 20-pin DIP and

a 20-pin SSOP.

*Contact factory for availability of CERDIP package, and for

processing to MIL-STD-883B. Not available in lead-free.

For 4-channel versions of these devices, see the

MAX1248/MAX1249 data sheet.

Typical Operating Circuit

+3V

Applications

Portable Data Logging

Data Acquisition

CH0

0.1FF

O TO

+2.5V

ANALOG

INPUTS

DGND

MAX149

Medical Instruments

AGND

COM

CH7

Battery-Powered Instruments

Pen Digitizers

CPU

VREF

4.7FF

SCLK

DIN

I/O

Process Control

SCK (SK)

MOSI (SO)

MISO (SI)

READJ

DOUT

0.01FF

SSTRB

SHDN

Pin Configuration appears at end of data sheet.

SPI and QSPI are trademarks of Motorola, Inc. MICROWIRE is a trademark of National Semiconductor Corp.

_______________________________________________________________ Maxim Integrated Products

For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,

or visit Maxim’s website at www.maxim-ic.com.

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与MAX149AMJP+相关器件

型号	品牌	获取价格	描述	数据表
MAX149BCAP	MAXIM	获取价格	+2.7V to +5.25V, Low-Power, 8-Channel, Serial 10-Bit ADCs
MAX149BCAP+T	MAXIM	获取价格	暂无描述
MAX149BCPP	MAXIM	获取价格	+2.7V to +5.25V, Low-Power, 8-Channel, Serial 10-Bit ADCs
MAX149BCWP	MAXIM	获取价格	Converter IC
MAX149BEAP	MAXIM	获取价格	+2.7V to +5.25V, Low-Power, 8-Channel, Serial 10-Bit ADCs
MAX149BEAP+	MAXIM	获取价格	ADC, Successive Approximation, 10-Bit, 1 Func, 8 Channel, Serial Access, CMOS, PDSO20, LEA
MAX149BEAP+T	MAXIM	获取价格	ADC, Successive Approximation, 10-Bit, 1 Func, 8 Channel, Serial Access, CMOS, PDSO20, 0.2
MAX149BEAP-G071	MAXIM	获取价格	D/A Converter, 10-Bit, 1 Func, 8 Channel, Serial Access, CMOS, PDSO20, SSOP-20
MAX149BEAP-T	MAXIM	获取价格	ADC, Successive Approximation, 10-Bit, 1 Func, 8 Channel, Serial Access, CMOS, PDSO20, SSO
MAX149BEAP-TG071	MAXIM	获取价格	D/A Converter, 10-Bit, 1 Func, 8 Channel, Serial Access, CMOS, PDSO20, SSOP-20

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