MAX9201MAX9202MAX9203(高速电压比较器).pdf

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MAX9201、MAX9202和MAX9203是一系列高速、低功耗电压比较器，它们提供了TTL逻辑输出和具有内部上拉电阻的功能。这些设备的快速传播延迟时间（典型为7纳秒，在5毫伏过驱时）使它们成为快速模数转换器（A/D转换器）、采样电路、线路接收器、电压/频率转换器（V/F转换器）以及许多其他数据判别、信号恢复应用的理想选择。 MAX9201、MAX9202和MAX9203均可从单独的模拟和数字电源供电，或者从单一的联合电源电压供电。模拟输入的共模范围包括负电源轨，使得当从单电源供电时可以进行地线感应。当从+5V电源供电时，每比较器仅消耗9毫瓦的功耗。MAX9202和MAX9203的特点是具有TTL兼容输入的输出锁存器。当锁存输入被驱动为低时，比较器输出状态被保持。MAX9201提供了与MAX9202/MAX9203相同的所有功能，除了锁存器。这三个比较器系列是MAX901/MAX902/MAX903的低功耗和低成本升级版，提供了50%的功耗节省和更小的封装。这些器件适用于多种应用，包括高速A/D转换器、高速V/F转换器、线路接收器、高速信号整形/恢复阈值检测器、输入触发电路、高速数据采样以及PWM电路。它们的特点包括： 1. 快速7纳秒传播延迟 2. 每个比较器的低功耗9毫瓦 3. 分离的模拟和数字供电 4. 灵活的模拟供电：+5V至+10V或±5V 5. 输入电压范围包括负电源轨 6. TTL兼容输出 7. TTL兼容锁存输入（MAX9202/MAX9203） 8. 提供节省空间的封装，包括8脚SOT23(MAX9203)、14脚TSSOP(MAX9202)、16脚TSSOP(MAX9201) 在订购信息中提供了不同封装和温度范围的器件的详细信息。例如： - MAX9201EU：工作温度范围为-40°C至+85°C，封装为16脚TSSOP - MAX9201ES：工作温度范围为-40°C至+85°C，封装为16脚窄SOP - MAX9202EU：工作温度范围为-40°C至+85°C，封装为14脚TSSOP - MAX9202ES：工作温度范围为-40°C至+85°C，封装为14脚窄SOP - MAX9203EK：工作温度范围为-40°C至+85°C，封装为8脚SOT23 - MAX9203ES：工作温度范围为-40°C至+85°C，封装为8脚窄SOP 在顶部视图中，器件的引脚排列为： 1. INA- 2. INA+ 3. GND 4. OUTA 5. OUTB 6. VEE 7. INB+ 8. INB- 了解这些知识点对于电子工程、数据采集系统设计以及对高速信号处理有要求的应用开发人员来说非常重要。它们能够提供选择和应用这些高速比较器所需的详细信息，确保系统设计的效率和性能。

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General Description

The MAX9201/MAX9202/MAX9203 high-speed, low-

power, quad/dual/single comparators feature TTL logic

outputs with active internal pullups. Fast propagation

delay (7ns typ at 5mV overdrive) makes these devices

ideal for fast A/D converters and sampling circuits, line

receivers, V/F converters, and many other data-discrim-

ination, signal restoration applications.

All comparators can be powered from separate analog

and digital power supplies or from a single combined

supply voltage. The analog input common-mode range

includes the negative rail, allowing ground sensing

when powered from a single supply. The MAX9201/

MAX9202/MAX9203 consume only 9mW per compara-

tor when powered from a +5V supply.

The MAX9202/MAX9203 feature output latches with TTL

compatible inputs. The comparator output states are

held when the latch inputs are driven low. The

MAX9201 provides all the same features as the

MAX9202/MAX9203 with the exception of the latches.

The MAX9201/MAX9202/MAX9203 are lower power and

lower cost upgrades to the MAX901/MAX902/MAX903

offering a 50% power savings and smaller packaging.

________________________Applications

____________________________Features

♦ Fast 7ns Propagation Delay

♦ Low 9mW/Comparator Power Consumption

♦ Separate Analog and Digital Supplies

♦ Flexible Analog Supply: +5V to +10V or ±5V

♦ Input Voltage Range Includes

Negative Supply Rail

♦ TTL-Compatible Outputs

♦ TTL-Compatible Latch Inputs

(MAX9202/MAX9203)

♦ Available in Space-Saving Packages

8-Pin SOT23 (MAX9203)

14-Pin TSSOP (MAX9202)

16-Pin TSSOP (MAX9201)

MAX9201/MAX9202/MAX9203

Low-Cost, 7ns, Low-Power

Voltage Comparators

________________________________________________________________ Maxim Integrated Products 1

TOP VIEW

N.C.

OUTB

LATCHBLATCHA

GND

INA+

INA-

MAX9202

INB+

INB-V

N.C.

OUTA

SO/TSSOP

INA- IND-

IND+

OUTD

OUTC

INC+

INC-

MAX9201

SO/TSSOP

INA+

GND

OUTA

OUTB

INB+

INB-

IN-

LATCH

IN+OUT

GND

SOT23

MAX9203

GND

LATCHV

OUTIN+

IN-

MAX9203

Pin Configurations

For price, delivery, and to place orders, please contact Maxim Distribution at 1-888-629-4642,

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

PART TEMP RANGE PIN-PACKAGE

MAX9201EUE -40°C to +85°C 16 TSSOP

MAX9201ESE -40°C to +85°C 16 Narrow SO

MAX9202EUD -40°C to +85°C 14 TSSOP

MAX9202ESD -40°C to +85°C 14 Narrow SO

MAX9203EKA-T

-40°C to +85°C 8 SOT23-8

MAX9203ESA -40°C to +85°C 8 Narrow SO

Ordering Information

High-Speed A/D

Converters

High-Speed V/F

Converters

Line Receivers

High-Speed Signal

Squaring/Restoration

Threshold Detectors

Input Trigger Circuitry

High-Speed Data

Sampling

PWM Circuits

19-1936; Rev 1; 1/05

MAX9201/MAX9202/MAX9203

Low Cost, 7ns, Low-Power

Voltage Comparators

2 _______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

ELECTRICAL CHARACTERISTICS

= +5V, V

= -5V, V

= +5V, GND = 0, V

= 0, LATCH_ = logic high, T

= -40°C to +85°C. Typical values are at T

= +25°C,

unless otherwise noted.) (Note 1)

Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and function-

al operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure

to absolute maximum rating conditions for extended periods may affect device reliability.

Analog Supply Voltage (V

- V

) .....................................+12V

Digital Supply Voltage (V

) .................................................+7V

Differential Input Voltage..................(V

- 0.3V) to (V

+ 0.3V)

Common Mode Input Voltage ..........(V

- 0.3V) to (V

+ 0.3V)

Latch Input Voltage

(MAX9202/MAX9203 only) .....................-0.3V to (V

+ 0.3V)

Output Short-Circuit Duration

To GND ......................................................................Continuous

To V

..................................................................................1min

Continuous Power Dissipation (T

= +70°C)

8-Pin SOT23-8 (derate 9.1mW/°C above +70°C) ...727mW/°C

8-Pin SO (derate 5.9mW/°C above +70°C).............471mW/°C

14-Pin TSSOP (derate 9.1mW/°C above +70°C) ....727mW/°C

14-Pin SO (derate 8.3mW/°C above +70°C)...........667mW/°C

16-Pin TSSOP (derate 9.4mW/°C above +70°C) ....755mW/°C

16-Pin SO (derate 8.7mW/°C above +70°C)...........696mW/°C

Operating Temperature Range ...........................-45°C to +85°C

Junction Temperature......................................................+150°C

Storage Temperature Range ............................-65°C to +150°C

Lead Temperature (soldering, 10s) ................................+300°C

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

Analog Supply Voltage Range

- V

Referenced to V

4.75 10.5

Digital Supply Voltage Range V

Referenced to GND

4.75 5.25

= +25°C14

Input Offset Voltage V

= 0,

OUT

= 1.4V

= -40°C to +85°C 7.5

= +25°C

1.25

Input Bias Current I

IN+

or I

IN-

= -40°C to +85°C 7.0

µA

= +25°C50

250

Input Offset Current I

= 0,

OUT

= 1.4V

= -40°C to +85°C

450

Common-Mode Input Voltage

Range

Note 2

- 0.1

C C -

2.25

= +25°C50

150

Common-Mode Rejection

Ratio

CMRR

- 5.1V <

C M

< +2.75V

OU T

= 1.4V

= -40°C to +85°C

250

µV/V

= +25°C50

150

Power-Supply Rejection Ratio

PSRR Note 3

= -40°C to +85°C

250

µV/V

Output High Voltage V

IN+

- V

IN-

) > 250mV, I

SOURCE

= 1mA 3.0 3.5 V

Output Low Voltage V

IN+

- V

IN-

) < -250mV, I

SINK

= 8mA

0.25

0.4 V

Latch Input Threshold Voltage

High

Note 4 1.4 2 V

Latch Input Threshold Voltage

Low

Note 4 0.8 1.4 V

Latch Input Current High I

= 3.0V, Note 4 0.5 3 µA

Latch Input Current Low I

= 0.3V, Note 4 0.5 3 µA

Input Capacitance C

4pF

Differential Input Impedance R

IND

5MΩ

Common-Mode Input

Impedance

INCM

5.5 MΩ

MAX9201 4.7 7

MAX9202 2.5 4.0

Positive Analog Supply

Current

Note 5

MAX9203 1.3 2

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