参数资料
| 型号： | AD7873BRQZ |
| 厂商： | Analog Devices Inc |
| 文件页数： | 28/29页 |
| 文件大小： | 0K |
| 描述： | IC ADC 12BIT TOUCHSCREEN 16QSOP |
| 标准包装： | 98 |
| 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 |
| 数据速率/采样率 (SPS，BPS)： | 125k |
| 电压基准： | 外部，内部 |
| 电源电压： | 2.2 V ~ 5.25 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-SSOP（0.154"，3.90mm 宽） |
| 供应商设备封装： | 16-QSOP |
| 包装： | 管件 |
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Data Sheet
AD7873
Rev. F | Page 7 of 28
PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS
Figure 3. LFCSP Pin Configuration
Figure 4. QSOP/TSSOP Pin Configuration
Table 5. Pin Function Descriptions
Pin No.
Mnemonic
Description
LFCSP
QSOP/
TSSOP
3, 10
1, 10
+VCC
Power Supply Input. The +VCC range for the AD7873 is from 2.2 V to 5.25 V. Both +VCC pins should be
connected directly together.
11
2
X+
X+ Position Input. ADC Input Channel 1.
12
3
Y+
Y+ Position Input. ADC Input Channel 2.
13
4
X–
X– Position Input.
14
5
Y–
Y– Position Input. ADC Input Channel 3.
15
6
GND
Analog Ground. Ground reference point for all circuitry on the AD7873. All analog input signals
and any external reference signals should be referred to this GND voltage.
16
7
VBAT
Battery Monitor Input. ADC Input Channel 4.
1
8
AUX
Auxiliary Input. ADC Input Channel 5.
2
9
VREF
Reference Output for the AD7873. Alternatively, an external reference can be applied to this input.
The voltage range for the external reference is 1.0 V to +VCC. For specified performance, it is 2.5 V on
the AD7873. The internal 2.5 V reference is available on this pin for use external to the device. The
reference output must be buffered before it is applied elsewhere in a system. A 0.1 F capacitor is
recommended between this pin and GND to reduce system noise effects.
4
11
PENIRQ
Pen Interrupt. CMOS logic open-drain output (requires 10 kΩ to 100 kΩ pull-up resistor externally).
5
12
DOUT
Data Out. Logic output. The conversion result from the AD7873 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.
6
13
BUSY
BUSY Output. Logic output. This output is high impedance when CS is high.
7
14
DIN
Data In. Logic Input. Data to be written to the AD7873 control register is provided on this input and
is clocked into the register on the rising edge of DCLK (see the Control Register section).
8
15
CS
Chip Select Input. Active low logic input. This input provides the dual function of initiating
conversions on the AD7873 and enabling the serial input/output register.
9
16
DCLK
External Clock Input. Logic input. DCLK provides the serial clock for accessing data from the part.
This clock input is also used as the clock source for the AD7873 conversion process.
EPAD
Exposed Pad. 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 the ground
plane.
1
N/A = not applicable.
AUX
VREF
+VCC
PENIRQ
X+
Y+
+VCC
DCLK
DO
UT
BUS
Y
DI
N
CS
G
ND
V
BAT
Y–
X–
02164-
003
12
11
10
1
3
4
9
2
6
5
7
8
16
15
14
13
NOTES
1. 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.
AD7873
TOP VIEW
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
X+
Y+
X–
VBAT
GND
Y–
+VCC
CS
DIN
BUSY
+VCC
AUX
VREF
PENIRQ
DOUT
DCLK
AD7873
TOP VIEW
(Not to Scale)
02164-
004
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相关代理商/技术参数 |
参数描述 |
|---|---|
| AD7873BRQZ-REEL | 功能描述:IC ADC 12BIT TOUCHSCREEN 16QSOP 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) |
| AD7873BRQZ-REEL7 | 功能描述:IC ADC 12BIT TOUCHSCREEN 16QSOP 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) |
| AD7874 | 制造商:AD 制造商全称:Analog Devices 功能描述:LC2MOS 4-Channel, 12-Bit Simultaneous Sampling Data Acquisition System |
| AD7874AN | 功能描述:IC DAS 12BIT 4CH LC2MOS 28-DIP RoHS:否 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 |
| AD7874ANZ | 功能描述:IC DAS 12BIT 4CH LC2MOS 28-DIP 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:Data Converter Basics 标准包装:1 系列:- 类型:电机控制 分辨率（位）:12 b 采样率（每秒）:1M 数据接口:串行，并联 电压电源:单电源 电源电压:2.7 V ~ 3.6 V，4.5 V ~ 5.5 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:100-TQFP 供应商设备封装:100-TQFP（14x14） 包装:剪切带 (CT) 其它名称:296-18373-1 |
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