MAX1233ETI

更新时间： 2024-11-23 03:54:19

品牌	Logo	应用领域
美信 - MAXIM		控制器
页数	文件大小	规格书
45页	1103K
描述
【15kV ESD-Protected Touch-Screen Controllers Include DAC and Keypad Controller

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数据手册

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MAX1233ETI 数据手册

19-2512; Rev 3; 8/05

1ꢀ5k ꢁEDꢂ-rotected TouchꢂEcreen

Controllers Include DAC and Keypad Controller

General Description

Features

The MAX1233/MAX1234 are complete PDA controllers in

5mm × 5mm, 28-pin QFN and TQFN packages. They fea-

ture a 12-bit analog-to-digital converter (ADC), low on-

resistance switches for driving resistive touch screens, an

internal +1.0V/+2.5V or external reference, 2°C accu-

rate, on-chip temperature sensor, direct +6V battery mon-

itor, keypad controller, 8-bit digital-to-analog converter

(DAC), and a synchronous serial interface. Each of the

keypad controllers’ eight row and column inputs can be

reconfigured as general-purpose parallel I/O pins (GPIO).

All analog inputs are fully ESD protected, eliminating the

need for external TransZorb^™devices.

♦ ESD-Protected Analog Inputs

15kV IEC 1000-4-2 Air-Gap Discharge

8kV IEC 1000-4-2 Contact Discharge

♦ Single-Supply Operation

+2.7V to +3.6V (MAX1233)

+4.75V to +5.25V (MAX1234)

♦ 4-Wire Touch-Screen Interface

♦ Internal +1.0V/+2.5V Reference or External

Reference (+1.0V to AV

)

♦ SPI^™/QSPI^™/MICROWIRE^™-Compatible 10MHz

Serial Interface

The MAX1233/MAX1234 offer programmable resolution

and sampling rates. Interrupts from the devices alert the

host processor when data is ready, when the screen is

touched, or a key press is detected. Software-

configurable scan control and internal timers give the user

flexibility without burdening the host processor. These

devices consume only 260µA at the maximum sampling

rate of 50ksps. Supply current falls to below 50µA for

sampling rates of 10ksps. The MAX1233/MAX1234 are

guaranteed over the -40°C to +85°C temperature range.

♦ 12-Bit, 50ksps ADC Measures

Resistive Touch-Screen Position and Pressure

Two Auxiliary Analog Inputs

Two Battery Voltages (0.5V to 6V)

On-Chip Temperature

♦ 8-Bit DAC for LCD Bias Control

♦ 4 × 4 Keypad Programmable Controller Offers Up

to Eight GPIO Pins

♦ Automatic Detection of Screen Touch, Key Press,

Applications

and End of Conversion

Personal Digital Assistants

♦ Programmable 8-, 10-, 12-Bit Resolution

♦ Programmable Conversion Rates

♦ AutoShutdown^™Between Conversions

Pagers

Touch-Screen Monitors

Cellular Phones

♦ Low Power

MP3 Players

260µA at 50ksps

50µA at 10ksps

6µA at 1ksps

Portable Instruments

Point-of-Sale Terminals

0.3µA Shutdown Current

-in Configuration

♦ 28-Pin 5mm × 5mm QFN and TQFN Packages

TOP VIEW

Ordering Information

PART

TEMP RANGE

PIN-PACKAGE

21 C4

20 C3

19 C2

18 C1

17 R1

16 R2

15 R3

MAX1233EGI

MAX1233ETI

MAX1234EGI

MAX1234ETI

-40°C to +85°C 28 QFN (5mm x 5mm)

-40°C to +85°C 28 TQFN (5mm x 5mm)

-40°C to +85°C 28 QFN (5mm x 5mm)

-40°C to +85°C 28 TQFN (5mm x 5mm)

*X+

*Y+

*X-

MAX1233

MAX1234

*Y-

GND

TransZorb is a trademark of General Semiconductor Industries, Inc.

SPI and QSPI are trademarks of Motorola, Inc.

QFN/TQFN

MICROWIRE is a trademark of National Semiconductor Corp.

AutoShutdown is a trademark of Maxim Integrated Products, Inc.

*PIN INCLUDES 8kV/15kV ESD PROTECTION.

________________________________________________________________ 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 7...45

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与MAX1233ETI相关器件

型号	品牌	获取价格	描述	数据表
MAX1233-MAX1234	MAXIM	获取价格	【15kV ESD-Protected Touch-Screen Controllers
MAX1234	MAXIM	获取价格	±.15kV ESD-Protected Touch-Screen Controllers Include DAC and Keypad Controller
MAX1234EGI	MAXIM	获取价格	【15kV ESD-Protected Touch-Screen Controllers
MAX1234EGI+	MAXIM	获取价格	Consumer Circuit, 5 X 5 MM, ROHS COMPLIANT, QFN-28
MAX1234EGI-T	MAXIM	获取价格	Consumer Circuit, 5 X 5 MM, 0.80 MM HEIGHT, QFN-28
MAX1234ETI	MAXIM	获取价格	【15kV ESD-Protected Touch-Screen Controllers
MAX1234EVKIT	MAXIM	获取价格	Evaluation System/Evaluation Kit for the MAX1233/MAX1234
MAX1234EVKIT\|MAX1234EVC16	MAXIM	获取价格	Evaluation System/Evaluation Kit for the MAX1233/MAX1234
MAX1234EVSYS	MAXIM	获取价格	Evaluation System/Evaluation Kit for the MAX1233/MAX1234
MAX1236	MAXIM	获取价格	2.7V to 3.6V and 4.5V to 5.5V, Low-Power, 4-/12-Channel, 2-Wire Serial, 12-Bit ADCs

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