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MAX1234EGI-T

更新时间： 2024-11-23 20:00:19
品牌 Logo 应用领域
美信 - MAXIM 商用集成电路
页数 文件大小 规格书
44页 636K
描述
Consumer Circuit, 5 X 5 MM, 0.80 MM HEIGHT, QFN-28

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MAX1234EGI-T 技术参数

是否Rohs认证： 不符合生命周期：Obsolete
零件包装代码：QFN包装说明：5 X 5 MM, 0.80 MM HEIGHT, QFN-28
针数：28Reach Compliance Code：not_compliant
HTS代码：8542.39.00.01风险等级：5.74
商用集成电路类型：CONSUMER CIRCUITJESD-30 代码：S-XQCC-N28
JESD-609代码：e0长度：5 mm
湿度敏感等级：1功能数量：1
端子数量：28最高工作温度：85 °C
最低工作温度：-40 °C封装主体材料：UNSPECIFIED
封装代码：HVQCCN封装等效代码：LCC28,.2SQ,20
封装形状：SQUARE封装形式：CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE
峰值回流温度（摄氏度）：240电源：5 V
认证状态：Not Qualified座面最大高度：0.9 mm
子类别：Other Consumer ICs最大供电电压 (Vsup)：5.25 V
最小供电电压 (Vsup)：4.75 V表面贴装：YES
温度等级：INDUSTRIAL端子面层：Tin/Lead (Sn/Pb)
端子形式：NO LEAD端子节距：0.5 mm
端子位置：QUAD处于峰值回流温度下的最长时间：NOT SPECIFIED
宽度：5 mmBase Number Matches：1

MAX1234EGI-T 数据手册

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19-2512; Rev 0; 7/02  
1ꢀ5k ꢁEDꢂ-rotected TouchꢂEcreen  
Controllers Include DAC and Keypad Controller  
General Description  
Features  
The MAX1233/MAX1234 are complete PDA controllers in  
a 5mm × 5mm, 28-pin QFN package. They feature a  
12-bit analog-to-digital converter (ADC), low on-resis-  
tance 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.  
o ESD-Protected Analog Inputs  
15kV IEC 1000-4-2 Air-Gap Discharge  
8kV IEC 1000-4-2 Contact Discharge  
o Single-Supply Operation  
+2.7V to +3.6V (MAX1233)  
+4.75V to +5.25V (MAX1234)  
o 4-Wire Touch-Screen Interface  
o Internal +1.0V/+2.5V Reference or External  
Reference (+1.0V to AV  
)
DD  
o SPI™/QSPI™/MICROWIRE™-Compatible 10MHz  
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.  
Serial Interface  
o 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  
o 8-Bit DAC for LCD Bias Control  
o 4 × 4 Keypad Programmable Controller Offers Up  
to Eight GPIO Pins  
Applications  
o Automatic Detection of Screen Touch, Key Press,  
Personal Digital Assistants  
and End of Conversion  
Pagers  
o Programmable 8-, 10-, 12-Bit Resolution  
o Programmable Conversion Rates  
Touch-Screen Monitors  
Cellular Phones  
o AutoShutdown™ Between Conversions  
MP3 Players  
Portable Instruments  
Point-of-Sale Terminals  
o Low Power  
260µA at 50ksps  
50µA at 10ksps  
6µA at 1ksps  
-in Configuration  
0.3µA Shutdown Current  
TOP VIEW  
o 28-Pin 5mm × 5mm QFN Package  
Ordering Information  
DV  
AV  
1
2
3
4
5
6
7
21 C4  
20 C3  
19 C2  
18 C1  
17 R1  
16 R2  
15 R3  
DD  
DD  
PART  
TEMP RANGE  
-40°C to +85°C  
-40°C to +85°C  
PIN-PACKAGE  
*X+  
*Y+  
*X-  
MAX1233  
MAX1234  
MAX1233EGI  
MAX1234EGI  
28 QFN (5mm × 5mm)  
28 QFN (5mm × 5mm)  
*Y-  
GND  
TransZorb is a trademark of General Semiconductor Industries,  
Inc.  
SPI and QSPI are trademarks of Motorola, Inc.  
MICROWIRE is a trademark of National Semiconductor Corp.  
AutoShutdown is a trademark of Maxim Integrated Products, Inc.  
QFN  
*PIN INCLUDES 8kV/15kV ESD PROTECTION.  
________________________________________________________________ Maxim Integrated Products  
1
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.  
1234567...44

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