Datasheet > MAX149BMAP/PR2+

MAX149BMAP/PR2+

更新时间： 2024-09-12 21:13:19

品牌	Logo	应用领域
美信 - MAXIM		光电二极管转换器
页数	文件大小	规格书
23页	1945K
描述
ADC, Successive Approximation, 10-Bit, 1 Func, 8 Channel, Serial Access, PDSO20, LEAD FREE, SSOP-20

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技术参数
数据手册

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MAX149BMAP/PR2+ 技术参数

是否Rohs认证：	符合	生命周期：	Active
零件包装代码：	SSOP	包装说明：	TSSOP,
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：	5.49	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-PDSO-G20
长度：	7.2 mm	最大线性误差 (EL)：	0.0977%
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：	PLASTIC/EPOXY	封装代码：	TSSOP
封装形状：	RECTANGULAR	封装形式：	SMALL OUTLINE, THIN PROFILE, SHRINK PITCH
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：	SAMPLE
筛选级别：	MIL-STD-883 Class B	座面最大高度：	1.99 mm
标称供电电压：	3 V	表面贴装：	YES
温度等级：	MILITARY	端子形式：	GULL WING
端子节距：	0.65 mm	端子位置：	DUAL
处于峰值回流温度下的最长时间：	NOT SPECIFIED	宽度：	5.29 mm
Base Number Matches：	1

MAX149BMAP/PR2+ 数据手册

19-0464; Rev 5; 1/12

+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 SPI/

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

20 PDIP

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

Ordering Information continued at end of data sheet.

†

Contact factory for availability of alternate surface-mount

package.

+Denotes a lead(Pb)-free/RoHS-compliant package.

The MAX148/MAX149 are available in 20-pin PDIP and

20-pin SSOP packages.

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

REF

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.

QSPI is a trademark of Motorola, Inc. MICROWIRE is a trademark of National Semiconductor Corp.

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MAX149BMAP/PR2+相关器件

型号	品牌	获取价格	描述	数据表
MAX149BMAP/PR3	MAXIM	获取价格	ADC, Successive Approximation, 10-Bit, 1 Func, 8 Channel, Serial Access, CMOS, PDSO20, SSO
MAX149BMAP/PR3+T	MAXIM	获取价格	ADC, Successive Approximation,
MAX149BMJP	MAXIM	获取价格	+2.7V to +5.25V, Low-Power, 8-Channel, Serial 10-Bit ADCs
MAX149BMJP+	MAXIM	获取价格	ADC, Successive Approximation, 10-Bit, 1 Func, 8 Channel, Serial Access, CDIP20, CERDIP-20
MAX149X1EVKIT	MAXIM	获取价格	Operates From a Single 3.3V Supply
MAX149X2EVKIT	MAXIM	获取价格	Terminal Block Connectors for Easy RS-485/ PROFIBUS Evaluation
MAX150	MAXIM	获取价格	CMOS High Speed 8Bit A/D Converter with Refrence and Track/Hold Function
MAX150	ADI	获取价格	CMOS、1.3μs、8位ADC，带有电压基准和采样/保持
MAX15000	MAXIM	获取价格	Current-Mode PWM Controllers with Programmable Switching Frequency
MAX15000	ADI	获取价格	电流模式PWM控制器，可调节开关频率

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