- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄9737 > AD7148ACPZ-1500RL7 (Analog Devices Inc)IC CAP-TO-DGTL CONV PROG 16LFCSP PDF資料下載
參數(shù)資料
| 型號(hào)： | AD7148ACPZ-1500RL7 |
| 廠商： | Analog Devices Inc |
| 文件頁數(shù)： | 10/57頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC CAP-TO-DGTL CONV PROG 16LFCSP |
| 標(biāo)準(zhǔn)包裝： | 1 |
| 類型： | 電容性 |
| 觸摸面板接口： | 2 線 |
| 輸入數(shù)/鍵： | 8 鍵 |
| 分辨率（位）： | 16 b |
| 數(shù)據(jù)接口： | I²C，串行 |
| 數(shù)據(jù)速率/采樣率 (SPS，BPS)： | 250k |
| 電壓基準(zhǔn)： | 內(nèi)部 |
| 電源電壓： | 2.6 V ~ 3.3 V |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 16-VQFN 裸露焊盤，CSP |
| 供應(yīng)商設(shè)備封裝： | 16-LFCSP |
| 包裝： | 標(biāo)準(zhǔn)包裝 |
| 產(chǎn)品目錄頁面： | 781 (CN2011-ZH PDF) |
| 其它名稱： | AD7148ACPZ-1500RL7DKR |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁當(dāng)前第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁第47頁第48頁第49頁第50頁第51頁第52頁第53頁第54頁第55頁第56頁第57頁
AD7148
Rev. A | Page 17 of 56
NONCONTACT PROXIMITY DETECTION
The AD7148 internal signal processing continuously monitors
all capacitance sensors for noncontact proximity detection. This
feature provides the ability to detect when a user is approaching
a sensor, at which time all internal calibration is immediately
disabled while the AD7148 is automatically configured to detect
a valid contact.
The proximity control register bits are described in Table 12. The
FP_PROXIMITY_CNT and LP_PROXIMITY_CNT register bits
(Address 0x002[11:4]) control the length of the calibration disable
period after the user leaves the sensor and proximity is no longer
active in full and low power modes.
The calibration is disabled during this time and is enabled
again at the end of this period, provided that the user is no longer
show examples of how these registers are used to set the full
and low power mode calibration disable periods.
The calibration disable period in full power mode is equal to
FP_PROXIMITY_CNT × 16 × time taken for one conversion
sequence in full power mode.
The calibration disable period in low power mode is equal to
LP_PROXIMITY_CNT × 4 × time taken for one conversion
sequence in low power mode.
Table 12. Proximity Control Registers (See Figure 30)
Bits
Length
Register Address
Description
FP_PROXIMITY_CNT
4 bits
0x002[7:4]
Calibration disable time in full power mode.
LP_PROXIMITY_CNT
4 bits
0x002[11:8]
Calibration disable time in low power mode.
FP_PROXIMITY_RECAL
10 bits
0x004[9:0]
Full power mode proximity recalibration time.
LP_PROXIMITY_RECAL
6 bits
0x004[15:10]
Low power mode proximity recalibration time.
PROXIMITY_RECAL_LVL
8 bits
0x003[7:0]
Proximity recalibration level. This value, multiplied by 16, controls the
sensitivity of Comparator 2 in Figure 30.
PROXIMITY_DETECTION_RATE
6 bits
0x003[13:8]
Proximity detection rate. This value, multiplied by 16, controls the
sensitivity of Comparator 1 in Figure 30.
PROXIMITY DETECTION
(INTERNAL)
CALIBRATION
(INTERNAL)
12 3 4 5
6 78 9 10 11 12 13 14 15 16
CDC CONVERSION SEQUENCE
(INTERNAL)
07155-
025
CALIBRATION ENABLED
CALIBRATION DISABLED
USER LEAVES SENSOR
AREA HERE
USER APPROACHES
SENSOR HERE
tCONV_FP
tCALDIS
Figure 26. Full Power Mode Proximity Detection Example with FP_PROXIMITY_CNT = 1
071
55-
3.
tCALDIS = (tCONV_LP × LP_PROXIMITY_CNT × 4)
026
NOTES
1. SEQUENCE CONVERSION TIME
tCONV_LP = tCONV_FP + LP_CONV_DELAY
2. PROXIMITY IS SET WHEN USER APPROACHES THE SENSOR AT WHICH TIME THE INTERNAL CALIBRATION IS DISABLED.
CALIBRATION ENABLED
CALIBRATION DISABLED
PROXIMITY DETECTION
(INTERNAL)
CALIBRATION
(INTERNAL)
tCALDIS
tCONV_LP
12 3 4 56 78 9 10 11 1213 14 15 16
CDC CONVERSION SEQUENCE
(INTERNAL)
USER LEAVES
SENSOR AREA HERE
USER APPROACHES
SENSOR HERE
1718 192021 2223 24
Figure 27. Low Power Mode Proximity Detection with LP_PROXIMITY_CNT = 4
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MS27467P9B98SA | CONN PLUG 3POS STRAIGHT W/SCKT |
| VE-J1J-MX-F1 | CONVERTER MOD DC/DC 36V 75W |
| MS27484T10B35PB | CONN PLUG 13POS STRAIGHT W/PINS |
| SY100E416JI | IC LINE RCVR QUINT DIFF 28-PLCC |
| MS27467T15F19PD | CONN PLUG 19POS STRAIGHT W/PINS |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AD7148ACPZ-1REEL | 功能描述:IC CAP-TO-DGTL CONV PROG 16LFCSP RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 觸摸屏控制器 系列:- 標(biāo)準(zhǔn)包裝:96 系列:- 類型:- 觸摸面板接口:- 輸入數(shù)/鍵:- 分辨率（位）:- 評(píng)估套件:* 數(shù)據(jù)接口:- 數(shù)據(jù)速率/采樣率 (SPS，BPS):- 電壓基準(zhǔn):- 電源電壓:- 電流 - 電源:- 工作溫度:- 安裝類型:表面貼裝 封裝/外殼:16-TSSOP（0.173"，4.40mm 寬） 供應(yīng)商設(shè)備封裝:16-TSSOP 包裝:帶卷 (TR) |
| AD7150 | 制造商:AD 制造商全稱:Analog Devices 功能描述:Ultra Low Power, 2 Channel, Capacitance Converter for Proximity Sensing |
| AD7150BRMZ | 功能描述:IC CAP CONV 2CH ULT LP 10MSOP RoHS:是 類別:集成電路 (IC) >> 接口 - 傳感器和探測(cè)器接口 系列:- 其它有關(guān)文件:Automotive Product Guide 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:74 系列:- 類型:觸控式傳感器 輸入類型:數(shù)字 輸出類型:數(shù)字 接口:JTAG，串行 電流 - 電源:100µA 安裝類型:表面貼裝 封裝/外殼:20-TSSOP（0.173"，4.40mm 寬） 供應(yīng)商設(shè)備封裝:20-TSSOP 包裝:管件 |
| AD7150BRMZ-REEL | 功能描述:IC CAP CONV 2CH ULT LP 10MSOP RoHS:是 類別:集成電路 (IC) >> 接口 - 傳感器和探測(cè)器接口 系列:- 其它有關(guān)文件:Automotive Product Guide 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:74 系列:- 類型:觸控式傳感器 輸入類型:數(shù)字 輸出類型:數(shù)字 接口:JTAG，串行 電流 - 電源:100µA 安裝類型:表面貼裝 封裝/外殼:20-TSSOP（0.173"，4.40mm 寬） 供應(yīng)商設(shè)備封裝:20-TSSOP 包裝:管件 |
| AD7151 | 制造商:AD 制造商全稱:Analog Devices 功能描述:Ultra-Low Power, 1-Channel, Capacitance Converter for Proximity Sensing |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。