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参数资料
| 型号： | MAX1234EGI |
| 厂商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分类： | 消费家电 |
| 英文描述： | 【15kV ESD-Protected Touch-Screen Controllers Include DAC and Keypad Controller |
| 中文描述： | SPECIALTY CONSUMER CIRCUIT, QCC28 |
| 封装： | 5 X 5 MM, 0.80 MM HEIGHT, QFN-28 |
| 文件页数： | 1/44页 |
| 文件大小： | 706K |
| 代理商： | MAX1234EGI |
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General Description
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.
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.
Applications
Personal Digital Assistants
Pagers
Touch-Screen Monitors
Cellular Phones
MP3 Players
Portable Instruments
Point-of-Sale Terminals
Features
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
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
o
Automatic Detection of Screen Touch, Key Press,
and End of Conversion
o
Programmable 8-, 10-, 12-Bit Resolution
o
Programmable Conversion Rates
o
AutoShutdown
Between Conversions
o
Low Power
260μA at 50ksps
50μA at 10ksps
6μA at 1ksps
0.3μA Shutdown Current
o
28-Pin 5mm
×
5mm QFN Package
M
±15kV ESD-Protected Touch-Screen
Controllers Include DAC and Keypad Controller
________________________________________________________________
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.
1
2
2
2
2
2
2
2
S
C
D
D
P
8
9
1
1
1
1
1
*
*
*
*
R
D
R
15
16
17
18
19
20
21
R3
*PIN INCLUDES 8kV/15kV ESD PROTECTION.
R2
R1
C1
C2
C3
C4
7
6
5
4
3
2
1
GND
*Y-
*X-
*Y+
*X+
AV
DD
DV
DD
MAX1233
MAX1234
QFN
TOP VIEW
K
B
Pin Configuration
Ordering Information
19-2512; Rev 1; 9/03
EVALUATION KIT
AVAILABLE
PART
TEMP RANGE
-40
°
C to +85
°
C
-40
°
C to +85
°
C
PIN-PACKAGE
28 QFN (5mm
×
5mm)
28 QFN (5mm
×
5mm)
MAX1233
EGI
MAX1234
EGI
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.
相关PDF资料 |
PDF描述 |
|---|---|
| MAX1239 | 2.7V to 3.6V and 4.5V to 5.5V, Low-Power, 4-/12-Channel, 2-Wire Serial, 12-Bit ADCs |
| MAX1239LEEE | 2.7V to 3.6V and 4.5V to 5.5V, Low-Power, 4-/12-Channel, 2-Wire Serial, 12-Bit ADCs |
| MAX1239MEEE | Circular Connector; No. of Contacts:128; Series:D38999; Body Material:Metal; Connecting Termination:Crimp; Connector Shell Size:25; Circular Contact Gender:Pin; Circular Shell Style:Wall Mount Receptacle; Insert Arrangement:25-35 |
| MAX1238LEEE | DIODE ZENER DUAL COMMON-CATHODE 300mW 10Vz 5mA-Izt 0.06 0.1uA-Ir 7.5 SOT-23 3K/REEL |
| MAX1237KEUA | 2.7V to 3.6V and 4.5V to 5.5V, Low-Power, 4-/12-Channel, 2-Wire Serial, 12-Bit ADCs |
相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX1234EGI+ | 制造商:Maxim Integrated Products 功能描述:TOUCH SCREEN CONTROLLER 28-PIN QFN EP - Rail/Tube |
| MAX1234EGI-T | 功能描述:触摸屏转换器和控制器 RoHS:否 制造商:Microchip Technology 类型:Resistive Touch Controllers 输入类型:3 Key 数据速率:140 SPS 分辨率:10 bit 接口类型:4-Wire, 5-Wire, 8-Wire, I2C, SPI 电源电压:2.5 V to 5.25 V 电源电流:17 mA 工作温度:- 40 C to + 85 C 封装 / 箱体:SSOP-20 |
| MAX1234ETI+ | 功能描述:触摸屏转换器和控制器 4Ch uWire QSPI/SPI Touch Interface RoHS:否 制造商:Microchip Technology 类型:Resistive Touch Controllers 输入类型:3 Key 数据速率:140 SPS 分辨率:10 bit 接口类型:4-Wire, 5-Wire, 8-Wire, I2C, SPI 电源电压:2.5 V to 5.25 V 电源电流:17 mA 工作温度:- 40 C to + 85 C 封装 / 箱体:SSOP-20 |
| MAX1234ETI+T | 功能描述:触摸屏转换器和控制器 4Ch uWire QSPI/SPI Touch Interface RoHS:否 制造商:Microchip Technology 类型:Resistive Touch Controllers 输入类型:3 Key 数据速率:140 SPS 分辨率:10 bit 接口类型:4-Wire, 5-Wire, 8-Wire, I2C, SPI 电源电压:2.5 V to 5.25 V 电源电流:17 mA 工作温度:- 40 C to + 85 C 封装 / 箱体:SSOP-20 |
| MAX1234EVC16 | 功能描述:数据转换 IC 开发工具 MAX1233/34 Eval Kit RoHS:否 制造商:Texas Instruments 产品:Demonstration Kits 类型:ADC 工具用于评估:ADS130E08 接口类型:SPI 工作电源电压:- 6 V to + 6 V |
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