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参数资料
| 型号： | AD7142ACPZ-500RL7 |
| 厂商： | Analog Devices Inc |
| 文件页数： | 27/73页 |
| 文件大小： | 0K |
| 描述： | IC CAP-TO-DGTL CONV PROG 32LFCSP |
| 标准包装： | 1 |
| 类型： | 电容数字转换器 |
| 分辨率（位）： | 16 b |
| 采样率（每秒）： | 250k |
| 数据接口： | 串行 |
| 电压电源： | 单电源 |
| 电源电压： | 2.6 V ~ 3.6 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 32-VFQFN 裸露焊盘，CSP |
| 供应商设备封装： | 32-LFCSP-VQ（5x5） |
| 包装： | 标准包装 |
| 其它名称： | AD7142ACPZ-500RL7DKR |
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AD7142
Rev. A | Page 32 of 72
SDI
CW
15
CW
14
CW
13
CW
8
CW
1
CW
0
D15
D14
SCLK
CW
12
NOTES
1. MULTIPLE SEQUENTIAL REGISTERS CAN BE LOADED CONTINUOUSLY.
2. THE FIRST (LOWEST ADDRESS) REGISTER ADDRESS IS WRITTEN, FOLLOWED BY MULTIPLE 16-BIT DATA-WORDS.
3. THE ADDRESS AUTOMATICALLY INCREMENTS WITH EACH 16-BIT DATA-WORD (ALL 16 BITS MUST BE WRITTEN).
4. CS IS HELD LOW UNTIL THE LAST DESIRED REGISTER HAS BEEN LOADED.
5. 16-BIT COMMAND WORD SETTINGS FOR SEQUENTIAL WRITE OPERATION:
CW[15:11] = 11100 (ENABLE WORD)
CW[10] = 0 (R/W)
CW[9:0] = [AD9, AD8, AD7, AD6, AD5, AD4, AD3, AD2, AD1, AD0] (STARTING MSB JUSTIFIED REGISTER ADDRESS)
D1
D0
D1
D0
D15
DATA FOR STARTING
REGISTER ADDRESS
DATA FOR NEXT
REGISTER ADDRESS
D15
D14
1
32
23
4
15
16
17
18
31
34
33
48
47
49
CS
CW
11
CW
10
CW
9
CW
7
CW
2
CW
6
CW
5
CW
4
CW
3
11
12
13
14
56
78
910
16-BIT COMMAND WORD
ENABLE WORD
R/W
STARTING REGISTER ADDRESS
05702-
034
Figure 47. Sequential Register Write SPI Timing
NOTES
1. SDI BITS ARE LATCHED ON SCLK RISING EDGES. SCLK CAN IDLE HIGH OR LOW BETWEEN WRITE OPERATIONS.
2. THE 16-BIT CONTROL WORD MUST BE WRITTEN ON SDI: 5 BITS FOR ENABLE WORD, 1 BIT FOR R/W, AND 10 BITS FOR REGISTER ADDRESS.
3. THE REGISTER DATA IS READ BACK ON THE SDO PIN.
4. X DENOTES DON’T CARE.
5. XXX DENOTES HIGH IMPEDANCE THREE-STATE OUTPUT.
6. CS IS HELD LOW UNTIL ALL REGISTER BITS HAVE BEEN READ BACK.
7. 16-BIT COMMAND WORD SETTINGS FOR SINGLE READBACK OPERATION:
CW[15:11] = 11100 (ENABLE WORD)
CW[10] = 1 (R/W)
CW[9:0] = [AD9, AD8, AD7, AD6, AD5, AD4, AD3, AD2, AD1, AD0] (10-BIT MSB JUSTIFIED REGISTER ADDRESS)
CW
11
CW
10
CW
13
CW
12
SDI
CW
15
CW
14
CW
9
CW
7
CW
6
CW
5
CW
4
CW
3
CW
2
CW
1
CW
0
XX
X
CW
8
t1
t4
16-BIT READBACK DATA
5
32
6
7
8
9
10
11
12
13
14
15
16
30
31
t8
t5
SCLK
12
34
XX
X
17
18
19
CS
XXX
SDO
XXX
D2
D1
D0
XXX
D15
D14
D13
t6
t7
XXX
16-BIT COMMAND WORD
ENABLE WORD
R/W
REGISTER ADDRESS
t2
t3
05702-
035
Figure 48. Single Register Readback SPI Timing
Reading Data
A read transaction begins when the master writes the command
word to the AD7142 with the read/write bit set to 1. The master
then supplies 16 clock pulses per data-word to be read, and the
AD7142 clocks out data from the addressed register on the SDO
line. The first data-word is clocked out on the first falling edge
of SCLK following the command word, as shown in Figure 48.
The AD7142 continues to clock out data on the SDO line
provided the master continues to supply the clock signal on
SCLK. The read transaction finishes when the master takes
CS high. If the AD7142 address pointer reaches its maximum
value, then the AD7142 repeatedly clocks out data from the
addressed register. The address pointer does not wrap around.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| AD7142ACPZ-500RL71 | 制造商:AD 制造商全称:Analog Devices 功能描述:Programmable Controller for Capacitance Touch Sensors |
| AD7142ACPZ-REEL | 功能描述:IC CAP-TO-DGTL CONV PROG 32LFCSP RoHS:是 类别:集成电路 (IC) >> 数据采集 - ADCs/DAC - 专用型 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:50 系列:- 类型:数据采集系统（DAS） 分辨率（位）:16 b 采样率（每秒）:21.94k 数据接口:MICROWIRE?，QSPI?，串行，SPI? 电压电源:模拟和数字 电源电压:1.8 V ~ 3.6 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:40-WFQFN 裸露焊盘 供应商设备封装:40-TQFN-EP（6x6） 包装:托盘 |
| AD7142ACPZ-REEL1 | 制造商:AD 制造商全称:Analog Devices 功能描述:Programmable Controller for Capacitance Touch Sensors |
| AD7143 | 制造商:AD 制造商全称:Analog Devices 功能描述:Programmable Controller for Capacitance Touch Sensors |
| AD7143ACPZ | 制造商:Analog Devices 功能描述:IC CDC 16BIT SMD LFCSP-16 7143 制造商:Analog Devices 功能描述:IC, CDC, 16BIT, SMD, LFCSP-16, 7143 |
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