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参数资料
| 型号： | AD7994BRU-0REEL |
| 厂商： | Analog Devices Inc |
| 文件页数： | 10/32页 |
| 文件大小： | 0K |
| 描述： | IC ADC 12BIT 4CHAN I2C 16TSSOP |
| 标准包装： | 2,500 |
| 位数： | 12 |
| 采样率（每秒）： | 188k |
| 数据接口： | I²C，串行 |
| 转换器数目： | 1 |
| 功率耗散（最大）： | 2.2mW |
| 电压电源： | 单电源 |
| 工作温度： | -40°C ~ 125°C |
| 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) |
| 输入数目和类型： | 4 个单端，单极 |
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AD7993/AD7994
Rev. 0 | Page 18 of 32
INTERNAL REGISTER STRUCTURE
The AD7993/AD7994 contain 17 internal registers (see
Figure 25) that are used to store conversion results, high and
low conversion limits, and information to configure and control
the device. Sixteen are data registers and one is an address
pointer register.
Each data register has an address that the address pointer
register points to when communicating with it. The conversion
result register is the only data register that is read only.
CONFIGURATION
REGISTER
ADDRESS
POINTER
REGISTER
SERIAL BUS INTERFACE
SDA
SCL
D
A
T
A
DATALOW
REGISTER CH2
DATAHIGH
REGISTER CH2
DATALOW
REGISTER CH1
HYSTERESIS
REGISTER CH1
DATAHIGH
REGISTER CH1
CYCLE TIMER
REGISTER
ALERT STATUS
REGISTER
CONVERSION
RESULT REGISTER
HYSTERESIS
REGISTER CH2
DATAHIGH
REGISTER CH3
DATALOW
REGISTER CH3
HYSTERESIS
REGISTER CH3
DATAHIGH
REGISTER CH4
DATALOW
REGISTER CH4
HYSTERESIS
REGISTER CH4
03472-0-025
Figure 25. AD7993/AD7994 Register Structure
ADDRESS POINTER REGISTER
Because it is the register to which the first data byte of every
write operation is written automatically, the address pointer
register does not have and does not require an address. The
address pointer register is an 8-bit register in which the 4 LSBs
are used as pointer bits to store an address that points to one of
the AD7993/AD7994’s data registers. The 4 MSBs are used as
command bits when operating in Mode 2 (see the Modes of
Operation section). The first byte following each write address
is the address of one of the data registers, which is stored in the
address pointer register and selects the data register to which
subsequent data bytes are written. Only the 4 LSBs of this
register are used to select a data register. On power-up, the
address pointer register contains all 0s, pointing to the
conversion result register.
Table 7. Address Pointer Register
C4
C3
C2
C1
P3
P2
P1
P0
0
Register Select
Table 8. AD7993/AD7994 Register Addresses
P3
P2
P1
P0
Registers
0
Conversion Result Register (Read)
0
1
Alert Status Register (Read/Write)
0
1
0
Configuration Register (Read/Write)
0
1
Cycle Timer Register (Read/Write)
0
1
0
DATALOW Reg CH1 (Read/Write)
0
1
0
1
DATAHIGH Reg CH1 (Read/Write)
0
1
0
Hysteresis Reg CH1 (Read/Write)
0
1
DATALOW Reg CH2 (Read/Write)
1
0
DATAHIGH Reg CH2 (Read/Write)
1
0
1
Hysteresis Reg CH2 (Read/Write)
1
0
1
0
DATALOW Reg CH3 (Read/Write)
1
0
1
DATAHIGH Reg CH3 (Read/Write)
1
0
Hysteresis Reg CH3 (Read/Write)
1
0
1
DATALOW Reg CH4 (Read/Write)
1
0
DATAHIGH Reg CH4 (Read/Write)
1
Hysteresis Reg CH4 (Read/Write)
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相关代理商/技术参数 |
参数描述 |
|---|---|
| AD7994BRU-1 | 制造商:Analog Devices 功能描述:ADC Single SAR 188ksps 12-bit Serial 16-Pin TSSOP 制造商:Rochester Electronics LLC 功能描述: |
| AD7994BRU-1REEL | 制造商:Analog Devices 功能描述:ADC Single SAR 188ksps 12-bit Serial 16-Pin TSSOP T/R |
| AD7994BRUZ0 | 制造商:Rochester Electronics LLC 功能描述: 制造商:Analog Devices 功能描述: |
| AD7994BRUZ-0 | 功能描述:IC ADC 12BIT 4CHAN I2C 16TSSOP RoHS:是 类别:集成电路 (IC) >> 数据采集 - 模数转换器 系列:- 标准包装:1 系列:microPOWER™ 位数:8 采样率（每秒）:1M 数据接口:串行，SPI? 转换器数目:1 功率耗散（最大）:- 电压电源:模拟和数字 工作温度:-40°C ~ 125°C 安装类型:表面贴装 封装/外壳:24-VFQFN 裸露焊盘 供应商设备封装:24-VQFN 裸露焊盘（4x4） 包装:Digi-Reel® 输入数目和类型:8 个单端，单极 产品目录页面:892 (CN2011-ZH PDF) 其它名称:296-25851-6 |
| AD7994BRUZ-0REEL | 功能描述:IC ADC 12BIT 4CHAN I2C 16TSSOP RoHS:是 类别:集成电路 (IC) >> 数据采集 - 模数转换器 系列:- 标准包装:2,500 系列:- 位数:16 采样率（每秒）:15 数据接口:MICROWIRE?，串行，SPI? 转换器数目:1 功率耗散（最大）:480µW 电压电源:单电源 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:38-WFQFN 裸露焊盘 供应商设备封装:38-QFN（5x7） 包装:带卷 (TR) 输入数目和类型:16 个单端，双极；8 个差分，双极 配用:DC1011A-C-ND - BOARD DELTA SIGMA ADC LTC2494 |
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