参数资料
型号: AD7294BCPZRL
厂商: Analog Devices Inc
文件页数: 21/49页
文件大小: 0K
描述: IC ADC 12BIT I2C/SRL 1M 56LFCSP
标准包装: 2,500
类型: ADC,DAC
分辨率(位): 12 b
采样率(每秒): 22.22k
数据接口: I²C,串行
电压电源: 模拟和数字
电源电压: 4.4 V ~ 5.5 V
工作温度: -40°C ~ 105°C
安装类型: 表面贴装
封装/外壳: 56-VFQFN 裸露焊盘,CSP
供应商设备封装: 56-LFCSP-VQ(8x8)
包装: 带卷 (TR)
Data Sheet
AD7294
Rev. H | Page 27 of 48
REGISTER SETTING
The AD7294 contains internal registers (see Figure 49) that
store conversion results, high and low conversion limits, and
information to configure and control the device.
ADDRESS
POINTER
REGISTER
SERIAL BUS INTERFACE
SDA
SCL
DAT
A
COMMAND
REGISTER
RESULT
REGISTER
DAC
REGISTERS
TSENSE RESULT
REGISTERS × 3
TSENSE OFFSET
REGISTERS × 2
ALERT
REGISTERS × 3
CONFIGURATION
REGISTER
POWER-DOWN
REGISTER
HYSTERESIS
REGISTER
DATAHIGH/
DATALOW
REGISTERS × 18
CHANNEL
SEQUENCE
REGISTER
05747-
039
Figure 49. AD7294 Register Structure
Each data register has an address to which the address pointer
register points when communicating with it. The command
register is the only register that is a write-only register; the rest
are read/write registers.
ADDRESS POINTER REGISTER
The address pointer register is an 8-bit register, in which the
6 LSBs are used as pointer bits to store an address that points
to one of the AD7294 data registers, see Table 9.
Table 9. AD7294 Register Address
Address in Hex
Registers (R is Read/W is Write)
00
Command Register (W)
01
Result Register (R)/DAC
A Value (W)
02
T
SENSE1 Result (R)/DACB Value (W)
03
T
SENSE2 Result (R)/DACC Value (W)
04
T
SENSEINT Result (R)/DACD Value (W)
05
Alert Register A (R/W)
06
Alert Register B (R/W)
07
Alert Register C (R/W)
08
Channel Sequence Register (R/W)
09
Configuration Register (R/W)
0A
Power-Down Register (R/W)
0B
DATA
LOW Register VIN0 (R/W)
0C
DATA
HIGH Register VIN0 (R/W)
0D
Hysteresis Register V
IN0 (R/W)
0E
DATA
LOW Register VIN1 (R/W)
0F
DATA
HIGH Register VIN1 (R/W)
10
Hysteresis Register V
IN1 (R/W)
11
DATA
LOW Register, VIN2 (R/W)
12
DATA
HIGH Register VIN2 (R/W)
13
Hysteresis Register V
IN2 (R/W)
14
DATA
LOW Register VIN3 (R/W)
15
DATA
HIGH Register VIN3 (R/W)
16
Hysteresis Register V
IN3 (R/W)
17
DATA
LOW Register ISENSE1 (R/W)
18
DATA
HIGH Register ISENSE1 (R/W)
19
Hysteresis Register I
SENSE1 (R/W)
1A
DATA
LOW Register ISENSE2 (R/W)
1B
DATA
HIGH Register ISENSE2 (R/W)
1C
Hysteresis Register I
SENSE2 (R/W)
1D
DATA
LOW Register TSENSE1 (R/W)
1E
DATA
HIGH Register TSENSE1 (R/W)
1F
Hysteresis Register T
SENSE1 (R/W)
20
DATA
LOW Register TSENSE2 (R/W)
21
DATA
HIGH Register TSENSE2 (R/W)
22
Hysteresis Register T
SENSE2 (R/W)
23
DATA
LOW Register TSENSEINT (R/W)
24
DATA
HIGH Register TSENSEINT (R/W)
25
Hysteresis Register T
SENSEINT (R/W)
26
T
SENSE1 Offset Register (R/W)
27
T
SENSE2 Offset Register (R/W)
40
Factory Test Mode
41
Factory Test Mode
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