參數(shù)資料
型號： AD7877ACPZ-REEL7
廠商： ANALOG DEVICES INC
元件分類： 消費家電
英文描述： 16-Bit, Pseudo Bipolar, Fully Diff Input, 250kSPS Serial Out, 2.7V to 5.5V Micro Power Sampling ADC 8-MSOP -40 to 85
中文描述： SPECIALTY CONSUMER CIRCUIT, QCC32
封裝： 5 X 5 MM, ROHS COMPLIANT, MO-220VHHD-2, LFCSP-32
文件頁數(shù)： 39/44頁
文件大?。?/td> 1002K
代理商： AD7877ACPZ-REEL7
AD7877
Register Name: DAC Register
Write Address: 1110; Read Address: 01110; Default Value: 0x000.
Table 21.
Read/
Write
Description
0
RANGE
R/W
Output range of the DAC in voltage mode
0 = 0 to V
CC
/2
1 = 0 to V
CC
1
Not Used
R/W
This bit is not used.
2
V/I
R/W
Voltage output and current output
0 = Voltage
1 = Current
3
PD
R/W
DAC power-down
0 = DAC on
1 = DAC powered down
4
DAC0
LSB of DAC data
5
DAC1
Bit 1 of DAC data
6
DAC2
Bit 2 of DAC data
7
DAC3
Bit 3 of DAC data
8
DAC4
Bit 4 of DAC data
9
DAC5
Bit 5 of DAC data
10
DAC6
Bit 6 of DAC data
11
DAC7
MSB of DAC data
Rev. A | Page 39 of 44
Bit
Name
Register Name: Y Position
Write Address: N/A; Read Address: 10000; Default Value: 0x000; Type: Read Only.
This register contains the 12-bit result of the measurement at the X+ input with Y layer excited (Y position measurement).
Register Name: X Position
Write Address: N/A; Read Address: 10001; Default Value: 0x000; Type: Read Only.
This register contains the 12-bit result of the measurement at the Y+ input with X layer excited (X position measurement).
Register Name: Z2
Write Address: N/A; Read Address: 10010; Default Value: 0x000; Type: Read Only.
This register contains the 12-bit result of the measurement at the Y input with excitation voltage applied to Y+ and X (used for touch-
pressure calculation).
Register Name: AUX1
Write Address: N/A; Read Address: 10011; Default Value: 0x000; Type: Read Only.
This register continues the 12-bit result of the measurement at Auxiliary Input 1.
Register Name: AUX2
Write Address: N/A; Read Address: 10100; Default Value: 0x000; Type: Read Only.
This register continues the 12-bit result of the measurement at Auxiliary Input 2.
Register Name: AUX3
Write Address: N/A; Read Address: 10101; Default Value: 0x000; Type: Read Only.
This register continues the 12-bit result of the measurement at Auxiliary Input 3.
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