EVAL-AD7877EB開發(fā)板套件編程器的評估演示板及套件規(guī)格書PDF中文資料

EVAL-AD7877EB屬于開發(fā)板套件編程器的評估演示板及套件。由亞德諾半導體技術有限公司制造生產(chǎn)的EVAL-AD7877EB評估和演示板及套件該系列產(chǎn)品提供了一種方便的方法，在經(jīng)過驗證的實施環(huán)境中評估某些重點器件的性能或特性。評估方法通常有完善的文檔說明，并且視乎具體情況由評估軟件提供支持。產(chǎn)品通常由印刷電路板組成，板上已裝有重點器件以及必要或有用的支持元器件，另外也可能包括其他組件，例如電纜或電源。對于數(shù)量特別多或類別獨特的器件類別(如 ADC、DAC 和開關模式電源)，評估平臺可組合為一個單獨的產(chǎn)品系列。

GENERAL DESCRIPTION

The AD7877 is a 12-bit, successive approximation ADC with a synchronous serial interface and low on resistance switches for driving touch screens. The AD7877 operates from a single 2.7 V to 5.25 V power supply (functional operation to 2.2 V), and features throughput rates of 125 kSPS. The AD7877 features direct battery measurement on two inputs, temperature and touch-pressure measurement.

FEATURES

4-wire touch screen interface

LCD noise reduction feature (STOPACQ pin)

Automatic conversion sequencer and timer

User-programmable conversion parameters

On-chip temperature sensor: ?40°C to +85°C

On-chip 2.5 V reference

On-chip 8-bit DAC

3 auxiliary analog inputs

1 dedicated and 3 optional GPIOs

2 direct battery measurement channels (0.5 V to 5 V)

3 interrupt outputs

Touch-pressure measurement

Wake up on touch function

Specified throughput rate of 125 kSPS

Single supply, VCC of 2.7 V to 5.25 V

Separate VDRIVE level for serial interface

Shutdown mode: 1 μA maximum

32-lead, LFCSP, 5 mm × 5 mm package

25-ball,WLCSP, 2.5 mm × 2.8 mm package

Qualified for automotive applications

APPLICATIONS

Personal digital assistants

Smart hand-held devices

Touch screen monitors

Point-of-sale terminals

Medical devices

Cell phones

Pagers