Datasheet > MAX1958/MAX1959EVKIT

MAX1958/MAX1959EVKIT

更新时间： 2024-10-02 23:45:55

品牌	Logo	应用领域
美信 - MAXIM		/
页数	文件大小	规格书
6页	144K
描述
Evaluation Kit for the MAX1958/MAX1959

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19-2775; Rev 0; 2/03

MAX1958/MAX1959 Evaluation Kit

General Description

Features

The MAX1958/MAX1959 evaluation (EV) kit demonstrates

an application circuit ideal for use with hetero-junction

bipolar transistor power amplifiers (HBT PA). The

MAX1958/MAX1959 application circuit features an

800mA DC-to-DC buck converter, an operational amplifier,

and a high-accuracy temperature sensor.

o Buck Converter

Dynamically Adjustable Output from 0.75V to

3.4V (MAX1958)

Dynamically Adjustable Output from 1V to

3.6V (MAX1959)

The high-efficiency, dynamically adjustable, pulse-width

modulated (PWM), DC-to-DC buck converter is opti-

mized to provide power to the HBT PA in N-CDMA and

W-CDMA cellular phones. The 1MHz PWM switching fre-

quency allows the use of small external components,

while skip mode reduces quiescent current to 190µA

with light loads. The buck regulator is dynamically con-

trolled to provide any fixed output voltage in the 0.75V to

3.4V (MAX1958) and 1V to 3.6V (MAX1959) ranges. The

DC-to-DC converter utilizes a low on-resistance internal

MOSFET switch and synchronous rectifier to maximize

efficiency and minimize external component count.

1MHz Fixed-Frequency PWM

800mA Guaranteed Output Current

130mV IC Dropout at 600mA Load

16% to 100% Duty-Cycle Operation

Low Quiescent Current

190µA (typ) in Skip Mode (MAX1958)

3mA (typ) in PWM Mode

0.01µA (typ) in Shutdown Mode

No External Schottky Diode Required

o Operational Amplifier

The built-in operational amplifier is used to provide full

bias control for the PA to maximize efficiency. The

Active Output Discharge in Shutdown Mode

800kHz Gain-Bandwidth Product

120dB Open-Loop Voltage Gain (R_L= 100kΩ)

5mA Rail-to-Rail Output

amplifier has Rail-to-Rail input/output capability,

800kHz gain-bandwidth product, and 120dB open-loop

voltage gain. An added feature of the amplifier is an

active output discharge in shutdown mode.

o Temperature Sensor

The precision temperature sensor measures tempera-

tures between -40°C and +125°C.

-40°C to +125°C Rated Temperature Range

Accurate Sensor, -11.64mV/°C Slope

This fully tested EV kit comes with the MAX1958 IC

installed. The MAX1959 has an identical pinout

arrangement and can be evaluated on this board. To

evaluate the MAX1959, request a free sample of the

MAX1959 when ordering this evaluation kit.

Ordering Information

PART

TEMP RANGE

IC PACKAGE

MAX1958EVKIT

-40°C to +85°C

20 Thin QFN

Component Suppliers

SUPPLIER

COMPONENT

Resistors

PHONE

WEBSITE

www.kamaya.com

www.murata.com

www.sumida.com

www.t-yuden.com

Kamaya

Murata

Sumida

260-489-1533

770-436-1300

81-03-3667-3381

408-573-4150

Capacitors

Inductors

Taiyo Yuden

Capacitors

Note: When contacting these component suppliers, please specify you are using the MAX1958/MAX1959.

Rail-to-Rail is a registered trademark of Nippon Motorola, Ltd.

________________________________________________________________ Maxim Integrated Products

For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at

1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.

12 3 4 5 6

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与MAX1958/MAX1959EVKIT相关器件

型号	品牌	获取价格	描述	数据表
MAX19586	MAXIM	获取价格	High-Dynamic-Range, 16-Bit, 80Msps ADC with -82dBFS Noise Floor
MAX19586ETN	MAXIM	获取价格	High-Dynamic-Range, 16-Bit, 80Msps ADC with -82dBFS Noise Floor
MAX19586ETN+	MAXIM	获取价格	ADC, Proprietary Method, 16-Bit, 1 Func, 1 Channel, Parallel, Word Access, CMOS, 8 X 8 MM,
MAX19586ETN+D	MAXIM	获取价格	ADC, Proprietary Method, 16-Bit, 1 Func, 1 Channel, Parallel, Word Access, CMOS, 8 X 8 MM,
MAX19586ETN+TD	MAXIM	获取价格	ADC, Proprietary Method, 16-Bit, 1 Func, 1 Channel, Parallel, Word Access, CMOS, 8 X 8 MM,
MAX19586ETN-D	MAXIM	获取价格	ADC, Proprietary Method, 16-Bit, 1 Func, 1 Channel, Parallel, Word Access, CMOS, 8 X 8 MM,
MAX19586ETN-T	MAXIM	获取价格	暂无描述
MAX19586ETN-TD	MAXIM	获取价格	ADC, Proprietary Method, 16-Bit, 1 Func, 1 Channel, Parallel, Word Access, CMOS, 8 X 8 MM,
MAX19588	MAXIM	获取价格	High-Dynamic-Range, 16-Bit, 100Msps ADC with -82dBFS Noise Floor
MAX19588	ADI	获取价格	高动态范围、16位、100Msps ADC，具有-82dBFS的噪声底

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