參數(shù)資料
型號: AD7148ACPZ-1REEL
廠商: Analog Devices Inc
文件頁數(shù): 56/57頁
文件大小: 0K
描述: IC CAP-TO-DGTL CONV PROG 16LFCSP
標(biāo)準(zhǔn)包裝: 5,000
類型: 電容性
觸摸面板接口: 2 線
輸入數(shù)/鍵: 8
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: 帶卷 (TR)
AD7148
Rev. A | Page 7 of 56
071
55-004
AND MAXIMUM THERMAL CAPABILITY, IT IS RECOMMENDED
THAT THE PAD BE SOLDERED TO THE GROUND PLANE.
PIN CONFIGURATION AND FUNCTION DESCRIPTIONS
NOTES
1. THE EXPOSED PAD IS NOT CONNECTED INTERNALLY.
FOR INCREASED RELIABILITY OF THE SOLDER JOINT
1
CIN4
2
CIN5
3
CIN6
4
CIN7
11 SCLK
12 INT
10 SDA
9
5
6
B
IA
S
7
G
N
D
8
15
C
IN
2
16
C
IN
3
14
C
IN
1
13
C
IN
0
AD7148
AC
SH
IE
LD
V
CC
TOP VIEW
(Not to Scale)
PIN 1
INDICATOR
VDRIVE
Figure 4. Pin Configuration
Table 6. Pin Function Descriptions
Pin No.
Mnemonic
Description
1
CIN4
Capacitance Sensor Input.
2
CIN5
Capacitance Sensor Input.
3
CIN6
Capacitance Sensor Input.
4
CIN7
Capacitance Sensor Input.
5
ACSHIELD
CDC Active Shield Output. Connect to external shield.
6
BIAS
Bias Node for Internal Circuitry. Requires 100 nF capacitor to ground.
7
GND
Ground Reference Point for All Circuitry.
8
VCC
Supply Voltage.
9
VDRIVE
Serial Interface Operating Voltage Supply.
10
SDA
I2C Serial Data Input/Output. SDA requires pull-up resistor.
11
SCLK
Clock Input for Serial Interface.
12
INT
General-Purpose Open-Drain Interrupt Output. Programmable polarity; requires pull-up resistor.
13
CIN0
Capacitance Sensor Input.
14
CIN1
Capacitance Sensor Input.
15
CIN2
Capacitance Sensor Input.
16
CIN3
Capacitance Sensor Input.
17
EPAD
The exposed pad is not connected internally. For increased reliability of the solder joint and maximum
thermal capability, it is recommended that the pad be soldered to the ground plane.
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