參數(shù)資料
型號(hào): EVAL-AD7877EB
廠商: Analog Devices, Inc.
英文描述: Touch Screen Controller
中文描述: 觸摸屏控制器
文件頁(yè)數(shù): 8/44頁(yè)
文件大小: 1002K
代理商: EVAL-AD7877EB
AD7877
Pin No.
29
30
31
Rev. A | Page 8 of 44
Mnemonic
ARNG
AOUT
V
REF
Description
When the DAC is in current output mode, a resistor from ARNG to GND sets the output range.
Analog Output Voltage or Current from DAC.
Reference output for the AD7877. The internal 2.5 V reference is available on this pin for use external to the
device. The reference output must be buffered before it is applied elsewhere in a system. A capacitor of 100nF
is strongly recommended between the V
REF
pin and GND to reduce system noise effects.
Alternatively, an external reference can be applied to this input. The voltage range for the external reference is
1.0 V to V
CC
. For the specified performance, it is 2.5 V on the AD7877.
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