- 您现在的位置：买卖IC网 > PDF目录9712 > AD7877ACPZ-REEL (Analog Devices Inc)IC ADC 12BIT TOUCHSCREEN 32LFCSP PDF资料下载
参数资料
| 型号： | AD7877ACPZ-REEL |
| 厂商： | Analog Devices Inc |
| 文件页数： | 44/45页 |
| 文件大小： | 0K |
| 描述： | IC ADC 12BIT TOUCHSCREEN 32LFCSP |
| 标准包装： | 5,000 |
| 类型： | 电阻 |
| 触摸面板接口： | 4 线 |
| 输入数/键： | 1 TSC |
| 分辨率（位）： | 12 b |
| 评估套件： | 可供 |
| 数据接口： | 串行，SPI? |
| 数据速率/采样率 (SPS，BPS)： | 125k |
| 电压基准： | 外部，内部 |
| 电源电压： | 2.7 V ~ 5.25 V |
| 电流 - 电源： | 1µA |
| 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 |
| 包装： | 带卷 (TR) |
| 配用： | EVAL-AD7877EBZ-ND - BOARD EVALUATION FOR AD7877 |
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页第29页第30页第31页第32页第33页第34页第35页第36页第37页第38页第39页第40页第41页第42页第43页当前第44页第45页
Data Sheet
AD7877
Rev. D | Page 7 of 44
PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS
03796-
002
NC
1
BAT2
2
BAT1
3
AUX3/GPIO3
4
AUX2/GPIO2
5
AUX1/GPIO1
6
VCC 7
NC
8
NC
24
DAV
23
ALERT
22
GPIO4
21
STOPACQ
20
DIN
19
CS
18
PENIRQ
17
NC
V
RE
F
AO
UT
ARNG
V
DRI
V
E
DO
UT
DCL
K
NC
32
31
30
29
28
27
26
25
NC
X–
Y–
X+
Y+
AG
ND
DG
ND
NC
9
10
11
12
13
14
15
16
NOTES
1. NC = NO CONNECT
2. THE EXPOSED PAD IS NOT CONNECTED INTERNALLY. FOR
INCREASED RELIABILITY OF THE SOLDER JOINTS AND
MAXIMUM THERMAL CAPABILITY, IT IS RECOMMENDED
THAT THE PAD BE SOLDERED TO GROUND PLANE.
AD7877
TOP VIEW
(Not to Scale)
Figure 4. LFCSP Pin Configuration
AD7877 WLCSP
TOP VIEW
Not to Scale
03796-
051
DCLK
ALERT
STOP
ACQ
CS
DGND
DOUT
GPIO4
DIN
PENIRQ
Y+
VDRIVE
DAV
AUX2/
GPI02
AGND
X+
ARNG
VREF
BAT1
VCC
Y–
AOUT
BAT2
AUX3/
GPI03
AUX1/
GPI01
X–
PIN 1
Figure 5. WLCSP Pin Configuration
Table 4. Pin Function Descriptions
Pin No.
Mnemonic
Description
1, 8, 9, 16,
24, 25, 32
NC
No Connect.
2
BAT2
Battery Monitor Input. ADC Input Channel 7.
3
BAT1
Battery Monitor Input. ADC Input Channel 6.
4
AUX3/GPIO3
Auxiliary Analog Input. ADC Input Channel 5. Can be reconfigured as GPIO pin.
5
AUX2/GPIO2
Auxiliary Analog Input. ADC Input Channel 4. Can be reconfigured as GPIO pin.
6
AUX1/GPIO1
Auxiliary Analog Input. ADC Input Channel 3. Can be reconfigured as GPIO pin.
7
VCC
Power Supply Input. The VCC range for the AD7877 is from 2.2 V to 5.25 V.
10
X
Touch Screen Position Input.
11
Y
Touch Screen Position Input. ADC Input Channel 2.
12
X+
Touch Screen Position Input. ADC Input Channel 0.
13
Y+
Touch Screen Position Input. ADC Input Channel 1.
14
AGND
Analog Ground. Ground reference point for all analog circuitry on the AD7877. All analog input signals and any
external reference signal should be referred to this voltage.
15
DGND
Digital Ground. Ground reference for all digital circuitry on the AD7877. Refer all digital input signals to this
voltage.
17
PENIRQ
Pen Interrupt. Digital active low output (has a 50 k internal pull-up resistor).
18
CS
Chip Select Input. Active low logic input. This input provides the dual function of initiating conversions on the
AD7877 and enabling the serial input/output register.
19
DIN
SPI Serial Data Input. Data to be written to the AD7877 registers are provided on this input and clocked into
the register on the rising edge of DCLK.
20
STOPACQ
Stop Acquisition Pin. A signal applied to this pin can be monitored by the AD7877, so that acquisition of new
data by the ADC is halted while the signal is active. Used to reduce the effect of noise from an LCD screen on
the touch screen measurements.
21
GPIO4
Dedicated General-Purpose Logic Input/Output Pin.
22
ALERT
Digital Active Low Output. Interrupt output that goes low if a GPIO data bit is set, or if the AUX1, TEMP1, BAT1,
or BAT2 measurements are out of range.
23
DAV
Data Available Output. Active low logic output. Asserts low when new data is available in the AD7877 results
registers.
26
DCLK
External Clock Input. Logic input. DCLK provides the serial clock for accessing data from the part.
27
DOUT
Serial Data Output. Logic output. The conversion result from the AD7877 is provided on this output as a serial
data stream. The bits are clocked out on the falling edge of the DCLK input. This output is high impedance
when CS is high.
相关PDF资料 |
PDF描述 |
|---|---|
| MS3106R32-17PX | CONN PLUG 4POS STRAIGHT W/PINS |
| MS3122E14-5SW | CONN RCPT 5POS BOX MNT W/SCKT |
| MS3126F20-41PY | CONN PLUG 41POS STRAIGHT W/PINS |
| M83723/82W803N | CONN RCPT 3POS WALL MT W/SCKT |
| MS3126F20-41PX | CONN PLUG 41POS STRAIGHT W/PINS |
相关代理商/技术参数 |
参数描述 |
|---|---|
| AD7877ACPZ-REEL7 | 功能描述:IC ADC 12BIT TOUCHSCREEN 32LFCSP RoHS:是 类别:集成电路 (IC) >> 数据采集 - 触摸屏控制器 系列:- 标准包装:96 系列:- 类型:- 触摸面板接口:- 输入数/键:- 分辨率（位）:- 评估套件:* 数据接口:- 数据速率/采样率 (SPS，BPS):- 电压基准:- 电源电压:- 电流 - 电源:- 工作温度:- 安装类型:表面贴装 封装/外壳:16-TSSOP（0.173"，4.40mm 宽） 供应商设备封装:16-TSSOP 包装:带卷 (TR) |
| AD7877WACPZ-REEL7 | 功能描述:IC CTRLR TOUCH SCREEN 32LFCSP RoHS:是 类别:集成电路 (IC) >> 数据采集 - 触摸屏控制器 系列:- 标准包装:96 系列:- 类型:- 触摸面板接口:- 输入数/键:- 分辨率（位）:- 评估套件:* 数据接口:- 数据速率/采样率 (SPS，BPS):- 电压基准:- 电源电压:- 电流 - 电源:- 工作温度:- 安装类型:表面贴装 封装/外壳:16-TSSOP（0.173"，4.40mm 宽） 供应商设备封装:16-TSSOP 包装:带卷 (TR) |
| AD7878 | 制造商:AD 制造商全称:Analog Devices 功能描述:LC2MOS Complete 12-Bit 100 kHz Sampling ADC with DSP Interface |
| AD7878AQ | 制造商:Rochester Electronics LLC 功能描述:COMPLETE 12 BIT ADC IC - Bulk |
| AD7878BQ | 功能描述:IC ADC 12BIT W/DSP INT 28-CDIP RoHS:否 类别:集成电路 (IC) >> 数据采集 - 模数转换器 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:250 系列:- 位数:12 采样率（每秒）:1.8M 数据接口:并联 转换器数目:1 功率耗散（最大）:1.82W 电压电源:模拟和数字 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:48-LQFP 供应商设备封装:48-LQFP（7x7） 包装:管件 输入数目和类型:2 个单端，单极 |
发布紧急采购，3分钟左右您将得到回复。